GET https://dev.normadoc.fr/products/ieee-399-1997-ieee00000613-240177

Response
200 OK
IP
216.73.216.9
Profiled on
Token
19776e

Components

3 Twig Components
11 Render Count
9 ms Render Time
100.0 MiB Memory Usage

Components

Name Metadata Render Count Render Time
ProductState 
"App\Twig\Components\ProductState"
components/ProductState.html.twig 		5 3.29ms
ProductMostRecent 
"App\Twig\Components\ProductMostRecent"
components/ProductMostRecent.html.twig 		5 5.39ms
ProductType 
"App\Twig\Components\ProductType"
components/ProductType.html.twig 		1 0.82ms

Render calls

ProductState App\Twig\Components\ProductState 94.0 MiB 2.28 ms
Input props 
[
  "product" => App\Entity\Product\Product {#7481
    #id: 8525
    #code: "IEEE00000613"
    #attributes: Doctrine\ORM\PersistentCollection {#8208 …}
    #variants: Doctrine\ORM\PersistentCollection {#4694 …}
    #options: Doctrine\ORM\PersistentCollection {#8519 …}
    #associations: Doctrine\ORM\PersistentCollection {#8476 …}
    #createdAt: DateTime @1751037490 {#7536
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#7535
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#8518 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#8503
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#7481}
        #id: 29109
        #name: "IEEE 399:1997"
        #slug: "ieee-399-1997-ieee00000613-240177"
        #description: """
          Revision Standard - Inactive-Reserved.<br />\n
          This IEEE Standards product is part of the Color Books family. Today’s intensely competitive business environment forces plant and building management to be very aware of the total owning cost of power distribution systems. Furthermore, these managers demand assurance of maximum return on capital investments in the power system. Power system studies are used to ensure that this maximum return is achieved, and the IEEE Brown Book is a valuable source of information about the purposes of, and techniques involved in, power system studies. The IEEE Brown Book ties together the essential fundamentals of power system studies; the most common studies for design or operation of a power system; and basic computational methods, including key information on the various types of computer systems and their requirements. By combining field experience in power system engineering with computer systems, engineers can perform detailed studies on both existing and proposed power systems. The planning, design, and operation of industrial and commercial power systems require several studies to assist in the evaluation of initial and future system performance, system reliability, safety, and the ability to grow with production and/or operating requirements. The power system analyses discussed in the IEEE Brown Book can help answer many questions about an existing system, such as the impact of expansion, the stability of the system, and the load distribution of the system. Chapters are devoted to different types of studies, and also include guidance on the preparation for these studies. Some of the studies discussed are: load flow studies, short-circuit studies, stability studies, motor starting studies, harmonic analysis studies, switching transient studies, reliability studies, cable ampacity studies, ground mat studies, coordination studies, and dc auxiliary power system analyses. As a result of focusing on computer studies, the IEEE Brown Book, in conjunction with other IEEE Color<br />\n
          \t\t\t\t<br />\n
          Analytical Principle and Recommended Techniques most often employed in the Design, Operation and Trouble-Shooting of Electric Power Systems for Industrial Facilities and Commerical Buildings. Covers Basic Principles and Specific Techniques for Short-Circuit, Load Flow, Transient Stability, Coordination and other Types of Analysis.<br />\n
          Basic Tutorial Guide and Reference Source on Power System Analysis for Electrical Engineers who Design and Operate Industrial Plant and Commercial Building Power Systems.
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis (Brown Book)"
        -notes: "Inactive-Reserved"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#7949 …}
    #channels: Doctrine\ORM\PersistentCollection {#8105 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#8067 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#8119 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7747 …}
    -apiLastModifiedAt: DateTime @1754517600 {#7530
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1618437600 {#7524
      date: 2021-04-15 00:00:00.0 Europe/Paris (+02:00)
    }
    -author: ""
    -publishedAt: DateTime @904514400 {#7531
      date: 1998-08-31 00:00:00.0 Europe/Paris (+02:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: DateTime @1616626800 {#7480
      date: 2021-03-25 00:00:00.0 Europe/Paris (+01:00)
    }
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 488
    -documents: Doctrine\ORM\PersistentCollection {#7859 …}
    -favorites: Doctrine\ORM\PersistentCollection {#7929 …}
  }
  "showFullLabel" => "true"
]
Attributes 
[
  "showFullLabel" => "true"
]
Component 
App\Twig\Components\ProductState {#94934
  +product: App\Entity\Product\Product {#7481
    #id: 8525
    #code: "IEEE00000613"
    #attributes: Doctrine\ORM\PersistentCollection {#8208 …}
    #variants: Doctrine\ORM\PersistentCollection {#4694 …}
    #options: Doctrine\ORM\PersistentCollection {#8519 …}
    #associations: Doctrine\ORM\PersistentCollection {#8476 …}
    #createdAt: DateTime @1751037490 {#7536
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#7535
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#8518 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#8503
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#7481}
        #id: 29109
        #name: "IEEE 399:1997"
        #slug: "ieee-399-1997-ieee00000613-240177"
        #description: """
          Revision Standard - Inactive-Reserved.<br />\n
          This IEEE Standards product is part of the Color Books family. Today’s intensely competitive business environment forces plant and building management to be very aware of the total owning cost of power distribution systems. Furthermore, these managers demand assurance of maximum return on capital investments in the power system. Power system studies are used to ensure that this maximum return is achieved, and the IEEE Brown Book is a valuable source of information about the purposes of, and techniques involved in, power system studies. The IEEE Brown Book ties together the essential fundamentals of power system studies; the most common studies for design or operation of a power system; and basic computational methods, including key information on the various types of computer systems and their requirements. By combining field experience in power system engineering with computer systems, engineers can perform detailed studies on both existing and proposed power systems. The planning, design, and operation of industrial and commercial power systems require several studies to assist in the evaluation of initial and future system performance, system reliability, safety, and the ability to grow with production and/or operating requirements. The power system analyses discussed in the IEEE Brown Book can help answer many questions about an existing system, such as the impact of expansion, the stability of the system, and the load distribution of the system. Chapters are devoted to different types of studies, and also include guidance on the preparation for these studies. Some of the studies discussed are: load flow studies, short-circuit studies, stability studies, motor starting studies, harmonic analysis studies, switching transient studies, reliability studies, cable ampacity studies, ground mat studies, coordination studies, and dc auxiliary power system analyses. As a result of focusing on computer studies, the IEEE Brown Book, in conjunction with other IEEE Color<br />\n
          \t\t\t\t<br />\n
          Analytical Principle and Recommended Techniques most often employed in the Design, Operation and Trouble-Shooting of Electric Power Systems for Industrial Facilities and Commerical Buildings. Covers Basic Principles and Specific Techniques for Short-Circuit, Load Flow, Transient Stability, Coordination and other Types of Analysis.<br />\n
          Basic Tutorial Guide and Reference Source on Power System Analysis for Electrical Engineers who Design and Operate Industrial Plant and Commercial Building Power Systems.
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis (Brown Book)"
        -notes: "Inactive-Reserved"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#7949 …}
    #channels: Doctrine\ORM\PersistentCollection {#8105 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#8067 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#8119 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7747 …}
    -apiLastModifiedAt: DateTime @1754517600 {#7530
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1618437600 {#7524
      date: 2021-04-15 00:00:00.0 Europe/Paris (+02:00)
    }
    -author: ""
    -publishedAt: DateTime @904514400 {#7531
      date: 1998-08-31 00:00:00.0 Europe/Paris (+02:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: DateTime @1616626800 {#7480
      date: 2021-03-25 00:00:00.0 Europe/Paris (+01:00)
    }
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 488
    -documents: Doctrine\ORM\PersistentCollection {#7859 …}
    -favorites: Doctrine\ORM\PersistentCollection {#7929 …}
  }
  +appearance: "state-withdrawn"
  +labels: [
    "Withdrawn"
  ]
  -stateAttributeCode: "state"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}
ProductType App\Twig\Components\ProductType 94.0 MiB 0.82 ms
Input props 
[
  "product" => App\Entity\Product\Product {#7481
    #id: 8525
    #code: "IEEE00000613"
    #attributes: Doctrine\ORM\PersistentCollection {#8208 …}
    #variants: Doctrine\ORM\PersistentCollection {#4694 …}
    #options: Doctrine\ORM\PersistentCollection {#8519 …}
    #associations: Doctrine\ORM\PersistentCollection {#8476 …}
    #createdAt: DateTime @1751037490 {#7536
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#7535
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#8518 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#8503
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#7481}
        #id: 29109
        #name: "IEEE 399:1997"
        #slug: "ieee-399-1997-ieee00000613-240177"
        #description: """
          Revision Standard - Inactive-Reserved.<br />\n
          This IEEE Standards product is part of the Color Books family. Today’s intensely competitive business environment forces plant and building management to be very aware of the total owning cost of power distribution systems. Furthermore, these managers demand assurance of maximum return on capital investments in the power system. Power system studies are used to ensure that this maximum return is achieved, and the IEEE Brown Book is a valuable source of information about the purposes of, and techniques involved in, power system studies. The IEEE Brown Book ties together the essential fundamentals of power system studies; the most common studies for design or operation of a power system; and basic computational methods, including key information on the various types of computer systems and their requirements. By combining field experience in power system engineering with computer systems, engineers can perform detailed studies on both existing and proposed power systems. The planning, design, and operation of industrial and commercial power systems require several studies to assist in the evaluation of initial and future system performance, system reliability, safety, and the ability to grow with production and/or operating requirements. The power system analyses discussed in the IEEE Brown Book can help answer many questions about an existing system, such as the impact of expansion, the stability of the system, and the load distribution of the system. Chapters are devoted to different types of studies, and also include guidance on the preparation for these studies. Some of the studies discussed are: load flow studies, short-circuit studies, stability studies, motor starting studies, harmonic analysis studies, switching transient studies, reliability studies, cable ampacity studies, ground mat studies, coordination studies, and dc auxiliary power system analyses. As a result of focusing on computer studies, the IEEE Brown Book, in conjunction with other IEEE Color<br />\n
          \t\t\t\t<br />\n
          Analytical Principle and Recommended Techniques most often employed in the Design, Operation and Trouble-Shooting of Electric Power Systems for Industrial Facilities and Commerical Buildings. Covers Basic Principles and Specific Techniques for Short-Circuit, Load Flow, Transient Stability, Coordination and other Types of Analysis.<br />\n
          Basic Tutorial Guide and Reference Source on Power System Analysis for Electrical Engineers who Design and Operate Industrial Plant and Commercial Building Power Systems.
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis (Brown Book)"
        -notes: "Inactive-Reserved"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#7949 …}
    #channels: Doctrine\ORM\PersistentCollection {#8105 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#8067 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#8119 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7747 …}
    -apiLastModifiedAt: DateTime @1754517600 {#7530
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1618437600 {#7524
      date: 2021-04-15 00:00:00.0 Europe/Paris (+02:00)
    }
    -author: ""
    -publishedAt: DateTime @904514400 {#7531
      date: 1998-08-31 00:00:00.0 Europe/Paris (+02:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: DateTime @1616626800 {#7480
      date: 2021-03-25 00:00:00.0 Europe/Paris (+01:00)
    }
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 488
    -documents: Doctrine\ORM\PersistentCollection {#7859 …}
    -favorites: Doctrine\ORM\PersistentCollection {#7929 …}
  }
]
Attributes 
[]
Component 
App\Twig\Components\ProductType {#95103
  +product: App\Entity\Product\Product {#7481
    #id: 8525
    #code: "IEEE00000613"
    #attributes: Doctrine\ORM\PersistentCollection {#8208 …}
    #variants: Doctrine\ORM\PersistentCollection {#4694 …}
    #options: Doctrine\ORM\PersistentCollection {#8519 …}
    #associations: Doctrine\ORM\PersistentCollection {#8476 …}
    #createdAt: DateTime @1751037490 {#7536
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#7535
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#8518 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#8503
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#7481}
        #id: 29109
        #name: "IEEE 399:1997"
        #slug: "ieee-399-1997-ieee00000613-240177"
        #description: """
          Revision Standard - Inactive-Reserved.<br />\n
          This IEEE Standards product is part of the Color Books family. Today’s intensely competitive business environment forces plant and building management to be very aware of the total owning cost of power distribution systems. Furthermore, these managers demand assurance of maximum return on capital investments in the power system. Power system studies are used to ensure that this maximum return is achieved, and the IEEE Brown Book is a valuable source of information about the purposes of, and techniques involved in, power system studies. The IEEE Brown Book ties together the essential fundamentals of power system studies; the most common studies for design or operation of a power system; and basic computational methods, including key information on the various types of computer systems and their requirements. By combining field experience in power system engineering with computer systems, engineers can perform detailed studies on both existing and proposed power systems. The planning, design, and operation of industrial and commercial power systems require several studies to assist in the evaluation of initial and future system performance, system reliability, safety, and the ability to grow with production and/or operating requirements. The power system analyses discussed in the IEEE Brown Book can help answer many questions about an existing system, such as the impact of expansion, the stability of the system, and the load distribution of the system. Chapters are devoted to different types of studies, and also include guidance on the preparation for these studies. Some of the studies discussed are: load flow studies, short-circuit studies, stability studies, motor starting studies, harmonic analysis studies, switching transient studies, reliability studies, cable ampacity studies, ground mat studies, coordination studies, and dc auxiliary power system analyses. As a result of focusing on computer studies, the IEEE Brown Book, in conjunction with other IEEE Color<br />\n
          \t\t\t\t<br />\n
          Analytical Principle and Recommended Techniques most often employed in the Design, Operation and Trouble-Shooting of Electric Power Systems for Industrial Facilities and Commerical Buildings. Covers Basic Principles and Specific Techniques for Short-Circuit, Load Flow, Transient Stability, Coordination and other Types of Analysis.<br />\n
          Basic Tutorial Guide and Reference Source on Power System Analysis for Electrical Engineers who Design and Operate Industrial Plant and Commercial Building Power Systems.
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis (Brown Book)"
        -notes: "Inactive-Reserved"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#7949 …}
    #channels: Doctrine\ORM\PersistentCollection {#8105 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#8067 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#8119 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7747 …}
    -apiLastModifiedAt: DateTime @1754517600 {#7530
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1618437600 {#7524
      date: 2021-04-15 00:00:00.0 Europe/Paris (+02:00)
    }
    -author: ""
    -publishedAt: DateTime @904514400 {#7531
      date: 1998-08-31 00:00:00.0 Europe/Paris (+02:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: DateTime @1616626800 {#7480
      date: 2021-03-25 00:00:00.0 Europe/Paris (+01:00)
    }
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 488
    -documents: Doctrine\ORM\PersistentCollection {#7859 …}
    -favorites: Doctrine\ORM\PersistentCollection {#7929 …}
  }
  +label: "Standard"
  -typeAttributeCode: "type"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}
ProductMostRecent App\Twig\Components\ProductMostRecent 94.0 MiB 1.39 ms
Input props 
[
  "product" => App\Entity\Product\Product {#7481
    #id: 8525
    #code: "IEEE00000613"
    #attributes: Doctrine\ORM\PersistentCollection {#8208 …}
    #variants: Doctrine\ORM\PersistentCollection {#4694 …}
    #options: Doctrine\ORM\PersistentCollection {#8519 …}
    #associations: Doctrine\ORM\PersistentCollection {#8476 …}
    #createdAt: DateTime @1751037490 {#7536
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#7535
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#8518 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#8503
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#7481}
        #id: 29109
        #name: "IEEE 399:1997"
        #slug: "ieee-399-1997-ieee00000613-240177"
        #description: """
          Revision Standard - Inactive-Reserved.<br />\n
          This IEEE Standards product is part of the Color Books family. Today’s intensely competitive business environment forces plant and building management to be very aware of the total owning cost of power distribution systems. Furthermore, these managers demand assurance of maximum return on capital investments in the power system. Power system studies are used to ensure that this maximum return is achieved, and the IEEE Brown Book is a valuable source of information about the purposes of, and techniques involved in, power system studies. The IEEE Brown Book ties together the essential fundamentals of power system studies; the most common studies for design or operation of a power system; and basic computational methods, including key information on the various types of computer systems and their requirements. By combining field experience in power system engineering with computer systems, engineers can perform detailed studies on both existing and proposed power systems. The planning, design, and operation of industrial and commercial power systems require several studies to assist in the evaluation of initial and future system performance, system reliability, safety, and the ability to grow with production and/or operating requirements. The power system analyses discussed in the IEEE Brown Book can help answer many questions about an existing system, such as the impact of expansion, the stability of the system, and the load distribution of the system. Chapters are devoted to different types of studies, and also include guidance on the preparation for these studies. Some of the studies discussed are: load flow studies, short-circuit studies, stability studies, motor starting studies, harmonic analysis studies, switching transient studies, reliability studies, cable ampacity studies, ground mat studies, coordination studies, and dc auxiliary power system analyses. As a result of focusing on computer studies, the IEEE Brown Book, in conjunction with other IEEE Color<br />\n
          \t\t\t\t<br />\n
          Analytical Principle and Recommended Techniques most often employed in the Design, Operation and Trouble-Shooting of Electric Power Systems for Industrial Facilities and Commerical Buildings. Covers Basic Principles and Specific Techniques for Short-Circuit, Load Flow, Transient Stability, Coordination and other Types of Analysis.<br />\n
          Basic Tutorial Guide and Reference Source on Power System Analysis for Electrical Engineers who Design and Operate Industrial Plant and Commercial Building Power Systems.
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis (Brown Book)"
        -notes: "Inactive-Reserved"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#7949 …}
    #channels: Doctrine\ORM\PersistentCollection {#8105 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#8067 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#8119 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7747 …}
    -apiLastModifiedAt: DateTime @1754517600 {#7530
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1618437600 {#7524
      date: 2021-04-15 00:00:00.0 Europe/Paris (+02:00)
    }
    -author: ""
    -publishedAt: DateTime @904514400 {#7531
      date: 1998-08-31 00:00:00.0 Europe/Paris (+02:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: DateTime @1616626800 {#7480
      date: 2021-03-25 00:00:00.0 Europe/Paris (+01:00)
    }
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 488
    -documents: Doctrine\ORM\PersistentCollection {#7859 …}
    -favorites: Doctrine\ORM\PersistentCollection {#7929 …}
  }
]
Attributes 
[]
Component 
App\Twig\Components\ProductMostRecent {#95170
  +product: App\Entity\Product\Product {#7481
    #id: 8525
    #code: "IEEE00000613"
    #attributes: Doctrine\ORM\PersistentCollection {#8208 …}
    #variants: Doctrine\ORM\PersistentCollection {#4694 …}
    #options: Doctrine\ORM\PersistentCollection {#8519 …}
    #associations: Doctrine\ORM\PersistentCollection {#8476 …}
    #createdAt: DateTime @1751037490 {#7536
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#7535
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#8518 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#8503
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#7481}
        #id: 29109
        #name: "IEEE 399:1997"
        #slug: "ieee-399-1997-ieee00000613-240177"
        #description: """
          Revision Standard - Inactive-Reserved.<br />\n
          This IEEE Standards product is part of the Color Books family. Today’s intensely competitive business environment forces plant and building management to be very aware of the total owning cost of power distribution systems. Furthermore, these managers demand assurance of maximum return on capital investments in the power system. Power system studies are used to ensure that this maximum return is achieved, and the IEEE Brown Book is a valuable source of information about the purposes of, and techniques involved in, power system studies. The IEEE Brown Book ties together the essential fundamentals of power system studies; the most common studies for design or operation of a power system; and basic computational methods, including key information on the various types of computer systems and their requirements. By combining field experience in power system engineering with computer systems, engineers can perform detailed studies on both existing and proposed power systems. The planning, design, and operation of industrial and commercial power systems require several studies to assist in the evaluation of initial and future system performance, system reliability, safety, and the ability to grow with production and/or operating requirements. The power system analyses discussed in the IEEE Brown Book can help answer many questions about an existing system, such as the impact of expansion, the stability of the system, and the load distribution of the system. Chapters are devoted to different types of studies, and also include guidance on the preparation for these studies. Some of the studies discussed are: load flow studies, short-circuit studies, stability studies, motor starting studies, harmonic analysis studies, switching transient studies, reliability studies, cable ampacity studies, ground mat studies, coordination studies, and dc auxiliary power system analyses. As a result of focusing on computer studies, the IEEE Brown Book, in conjunction with other IEEE Color<br />\n
          \t\t\t\t<br />\n
          Analytical Principle and Recommended Techniques most often employed in the Design, Operation and Trouble-Shooting of Electric Power Systems for Industrial Facilities and Commerical Buildings. Covers Basic Principles and Specific Techniques for Short-Circuit, Load Flow, Transient Stability, Coordination and other Types of Analysis.<br />\n
          Basic Tutorial Guide and Reference Source on Power System Analysis for Electrical Engineers who Design and Operate Industrial Plant and Commercial Building Power Systems.
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis (Brown Book)"
        -notes: "Inactive-Reserved"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#7949 …}
    #channels: Doctrine\ORM\PersistentCollection {#8105 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#8067 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#8119 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7747 …}
    -apiLastModifiedAt: DateTime @1754517600 {#7530
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1618437600 {#7524
      date: 2021-04-15 00:00:00.0 Europe/Paris (+02:00)
    }
    -author: ""
    -publishedAt: DateTime @904514400 {#7531
      date: 1998-08-31 00:00:00.0 Europe/Paris (+02:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: DateTime @1616626800 {#7480
      date: 2021-03-25 00:00:00.0 Europe/Paris (+01:00)
    }
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 488
    -documents: Doctrine\ORM\PersistentCollection {#7859 …}
    -favorites: Doctrine\ORM\PersistentCollection {#7929 …}
  }
  +label: "Most Recent"
  +icon: "check-xs"
  -mostRecentAttributeCode: "most_recent"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}
ProductState App\Twig\Components\ProductState 94.0 MiB 0.24 ms
Input props 
[
  "product" => App\Entity\Product\Product {#102138
    #id: 8524
    #code: "IEEE00000612"
    #attributes: Doctrine\ORM\PersistentCollection {#102121 …}
    #variants: Doctrine\ORM\PersistentCollection {#102118 …}
    #options: Doctrine\ORM\PersistentCollection {#102114 …}
    #associations: Doctrine\ORM\PersistentCollection {#102116 …}
    #createdAt: DateTime @1751037490 {#102146
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#102119
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#102132 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#102156
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#102138}
        #id: 29105
        #name: "IEEE 399:1990"
        #slug: "ieee-399-1990-ieee00000612-240176"
        #description: """
          Revision Standard - Superseded.<br />\n
          Superseded by 399-1997. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power System Analysis"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#102129 …}
    #channels: Doctrine\ORM\PersistentCollection {#102123 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#102127 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#102125 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#102139 …}
    -apiLastModifiedAt: DateTime @1754517600 {#102106
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#102145
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @661215600 {#102144
      date: 1990-12-15 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 384
    -documents: Doctrine\ORM\PersistentCollection {#102136 …}
    -favorites: Doctrine\ORM\PersistentCollection {#102134 …}
  }
  "showFullLabel" => "true"
]
Attributes 
[
  "showFullLabel" => "true"
]
Component 
App\Twig\Components\ProductState {#102192
  +product: App\Entity\Product\Product {#102138
    #id: 8524
    #code: "IEEE00000612"
    #attributes: Doctrine\ORM\PersistentCollection {#102121 …}
    #variants: Doctrine\ORM\PersistentCollection {#102118 …}
    #options: Doctrine\ORM\PersistentCollection {#102114 …}
    #associations: Doctrine\ORM\PersistentCollection {#102116 …}
    #createdAt: DateTime @1751037490 {#102146
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#102119
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#102132 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#102156
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#102138}
        #id: 29105
        #name: "IEEE 399:1990"
        #slug: "ieee-399-1990-ieee00000612-240176"
        #description: """
          Revision Standard - Superseded.<br />\n
          Superseded by 399-1997. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power System Analysis"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#102129 …}
    #channels: Doctrine\ORM\PersistentCollection {#102123 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#102127 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#102125 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#102139 …}
    -apiLastModifiedAt: DateTime @1754517600 {#102106
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#102145
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @661215600 {#102144
      date: 1990-12-15 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 384
    -documents: Doctrine\ORM\PersistentCollection {#102136 …}
    -favorites: Doctrine\ORM\PersistentCollection {#102134 …}
  }
  +appearance: "state-suspended"
  +labels: [
    "Superseded"
  ]
  -stateAttributeCode: "state"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}
ProductMostRecent App\Twig\Components\ProductMostRecent 94.0 MiB 0.97 ms
Input props 
[
  "product" => App\Entity\Product\Product {#102138
    #id: 8524
    #code: "IEEE00000612"
    #attributes: Doctrine\ORM\PersistentCollection {#102121 …}
    #variants: Doctrine\ORM\PersistentCollection {#102118 …}
    #options: Doctrine\ORM\PersistentCollection {#102114 …}
    #associations: Doctrine\ORM\PersistentCollection {#102116 …}
    #createdAt: DateTime @1751037490 {#102146
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#102119
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#102132 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#102156
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#102138}
        #id: 29105
        #name: "IEEE 399:1990"
        #slug: "ieee-399-1990-ieee00000612-240176"
        #description: """
          Revision Standard - Superseded.<br />\n
          Superseded by 399-1997. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power System Analysis"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#102129 …}
    #channels: Doctrine\ORM\PersistentCollection {#102123 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#102127 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#102125 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#102139 …}
    -apiLastModifiedAt: DateTime @1754517600 {#102106
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#102145
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @661215600 {#102144
      date: 1990-12-15 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 384
    -documents: Doctrine\ORM\PersistentCollection {#102136 …}
    -favorites: Doctrine\ORM\PersistentCollection {#102134 …}
  }
]
Attributes 
[]
Component 
App\Twig\Components\ProductMostRecent {#102260
  +product: App\Entity\Product\Product {#102138
    #id: 8524
    #code: "IEEE00000612"
    #attributes: Doctrine\ORM\PersistentCollection {#102121 …}
    #variants: Doctrine\ORM\PersistentCollection {#102118 …}
    #options: Doctrine\ORM\PersistentCollection {#102114 …}
    #associations: Doctrine\ORM\PersistentCollection {#102116 …}
    #createdAt: DateTime @1751037490 {#102146
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#102119
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#102132 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#102156
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#102138}
        #id: 29105
        #name: "IEEE 399:1990"
        #slug: "ieee-399-1990-ieee00000612-240176"
        #description: """
          Revision Standard - Superseded.<br />\n
          Superseded by 399-1997. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power System Analysis"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#102129 …}
    #channels: Doctrine\ORM\PersistentCollection {#102123 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#102127 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#102125 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#102139 …}
    -apiLastModifiedAt: DateTime @1754517600 {#102106
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#102145
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @661215600 {#102144
      date: 1990-12-15 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 384
    -documents: Doctrine\ORM\PersistentCollection {#102136 …}
    -favorites: Doctrine\ORM\PersistentCollection {#102134 …}
  }
  +label: "Historical"
  +icon: "historical"
  -mostRecentAttributeCode: "most_recent"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}
ProductState App\Twig\Components\ProductState 100.0 MiB 0.29 ms
Input props 
[
  "product" => App\Entity\Product\Product {#7481
    #id: 8525
    #code: "IEEE00000613"
    #attributes: Doctrine\ORM\PersistentCollection {#8208 …}
    #variants: Doctrine\ORM\PersistentCollection {#4694 …}
    #options: Doctrine\ORM\PersistentCollection {#8519 …}
    #associations: Doctrine\ORM\PersistentCollection {#8476 …}
    #createdAt: DateTime @1751037490 {#7536
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#7535
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#8518 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#8503
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#7481}
        #id: 29109
        #name: "IEEE 399:1997"
        #slug: "ieee-399-1997-ieee00000613-240177"
        #description: """
          Revision Standard - Inactive-Reserved.<br />\n
          This IEEE Standards product is part of the Color Books family. Today’s intensely competitive business environment forces plant and building management to be very aware of the total owning cost of power distribution systems. Furthermore, these managers demand assurance of maximum return on capital investments in the power system. Power system studies are used to ensure that this maximum return is achieved, and the IEEE Brown Book is a valuable source of information about the purposes of, and techniques involved in, power system studies. The IEEE Brown Book ties together the essential fundamentals of power system studies; the most common studies for design or operation of a power system; and basic computational methods, including key information on the various types of computer systems and their requirements. By combining field experience in power system engineering with computer systems, engineers can perform detailed studies on both existing and proposed power systems. The planning, design, and operation of industrial and commercial power systems require several studies to assist in the evaluation of initial and future system performance, system reliability, safety, and the ability to grow with production and/or operating requirements. The power system analyses discussed in the IEEE Brown Book can help answer many questions about an existing system, such as the impact of expansion, the stability of the system, and the load distribution of the system. Chapters are devoted to different types of studies, and also include guidance on the preparation for these studies. Some of the studies discussed are: load flow studies, short-circuit studies, stability studies, motor starting studies, harmonic analysis studies, switching transient studies, reliability studies, cable ampacity studies, ground mat studies, coordination studies, and dc auxiliary power system analyses. As a result of focusing on computer studies, the IEEE Brown Book, in conjunction with other IEEE Color<br />\n
          \t\t\t\t<br />\n
          Analytical Principle and Recommended Techniques most often employed in the Design, Operation and Trouble-Shooting of Electric Power Systems for Industrial Facilities and Commerical Buildings. Covers Basic Principles and Specific Techniques for Short-Circuit, Load Flow, Transient Stability, Coordination and other Types of Analysis.<br />\n
          Basic Tutorial Guide and Reference Source on Power System Analysis for Electrical Engineers who Design and Operate Industrial Plant and Commercial Building Power Systems.
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis (Brown Book)"
        -notes: "Inactive-Reserved"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#7949 …}
    #channels: Doctrine\ORM\PersistentCollection {#8105 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#8067 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#8119 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7747 …}
    -apiLastModifiedAt: DateTime @1754517600 {#7530
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1618437600 {#7524
      date: 2021-04-15 00:00:00.0 Europe/Paris (+02:00)
    }
    -author: ""
    -publishedAt: DateTime @904514400 {#7531
      date: 1998-08-31 00:00:00.0 Europe/Paris (+02:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: DateTime @1616626800 {#7480
      date: 2021-03-25 00:00:00.0 Europe/Paris (+01:00)
    }
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 488
    -documents: Doctrine\ORM\PersistentCollection {#7859 …}
    -favorites: Doctrine\ORM\PersistentCollection {#7929 …}
  }
  "showFullLabel" => "true"
]
Attributes 
[
  "showFullLabel" => "true"
]
Component 
App\Twig\Components\ProductState {#108874
  +product: App\Entity\Product\Product {#7481
    #id: 8525
    #code: "IEEE00000613"
    #attributes: Doctrine\ORM\PersistentCollection {#8208 …}
    #variants: Doctrine\ORM\PersistentCollection {#4694 …}
    #options: Doctrine\ORM\PersistentCollection {#8519 …}
    #associations: Doctrine\ORM\PersistentCollection {#8476 …}
    #createdAt: DateTime @1751037490 {#7536
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#7535
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#8518 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#8503
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#7481}
        #id: 29109
        #name: "IEEE 399:1997"
        #slug: "ieee-399-1997-ieee00000613-240177"
        #description: """
          Revision Standard - Inactive-Reserved.<br />\n
          This IEEE Standards product is part of the Color Books family. Today’s intensely competitive business environment forces plant and building management to be very aware of the total owning cost of power distribution systems. Furthermore, these managers demand assurance of maximum return on capital investments in the power system. Power system studies are used to ensure that this maximum return is achieved, and the IEEE Brown Book is a valuable source of information about the purposes of, and techniques involved in, power system studies. The IEEE Brown Book ties together the essential fundamentals of power system studies; the most common studies for design or operation of a power system; and basic computational methods, including key information on the various types of computer systems and their requirements. By combining field experience in power system engineering with computer systems, engineers can perform detailed studies on both existing and proposed power systems. The planning, design, and operation of industrial and commercial power systems require several studies to assist in the evaluation of initial and future system performance, system reliability, safety, and the ability to grow with production and/or operating requirements. The power system analyses discussed in the IEEE Brown Book can help answer many questions about an existing system, such as the impact of expansion, the stability of the system, and the load distribution of the system. Chapters are devoted to different types of studies, and also include guidance on the preparation for these studies. Some of the studies discussed are: load flow studies, short-circuit studies, stability studies, motor starting studies, harmonic analysis studies, switching transient studies, reliability studies, cable ampacity studies, ground mat studies, coordination studies, and dc auxiliary power system analyses. As a result of focusing on computer studies, the IEEE Brown Book, in conjunction with other IEEE Color<br />\n
          \t\t\t\t<br />\n
          Analytical Principle and Recommended Techniques most often employed in the Design, Operation and Trouble-Shooting of Electric Power Systems for Industrial Facilities and Commerical Buildings. Covers Basic Principles and Specific Techniques for Short-Circuit, Load Flow, Transient Stability, Coordination and other Types of Analysis.<br />\n
          Basic Tutorial Guide and Reference Source on Power System Analysis for Electrical Engineers who Design and Operate Industrial Plant and Commercial Building Power Systems.
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis (Brown Book)"
        -notes: "Inactive-Reserved"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#7949 …}
    #channels: Doctrine\ORM\PersistentCollection {#8105 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#8067 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#8119 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7747 …}
    -apiLastModifiedAt: DateTime @1754517600 {#7530
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1618437600 {#7524
      date: 2021-04-15 00:00:00.0 Europe/Paris (+02:00)
    }
    -author: ""
    -publishedAt: DateTime @904514400 {#7531
      date: 1998-08-31 00:00:00.0 Europe/Paris (+02:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: DateTime @1616626800 {#7480
      date: 2021-03-25 00:00:00.0 Europe/Paris (+01:00)
    }
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 488
    -documents: Doctrine\ORM\PersistentCollection {#7859 …}
    -favorites: Doctrine\ORM\PersistentCollection {#7929 …}
  }
  +appearance: "state-withdrawn"
  +labels: [
    "Withdrawn"
  ]
  -stateAttributeCode: "state"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}
ProductMostRecent App\Twig\Components\ProductMostRecent 100.0 MiB 1.07 ms
Input props 
[
  "product" => App\Entity\Product\Product {#7481
    #id: 8525
    #code: "IEEE00000613"
    #attributes: Doctrine\ORM\PersistentCollection {#8208 …}
    #variants: Doctrine\ORM\PersistentCollection {#4694 …}
    #options: Doctrine\ORM\PersistentCollection {#8519 …}
    #associations: Doctrine\ORM\PersistentCollection {#8476 …}
    #createdAt: DateTime @1751037490 {#7536
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#7535
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#8518 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#8503
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#7481}
        #id: 29109
        #name: "IEEE 399:1997"
        #slug: "ieee-399-1997-ieee00000613-240177"
        #description: """
          Revision Standard - Inactive-Reserved.<br />\n
          This IEEE Standards product is part of the Color Books family. Today’s intensely competitive business environment forces plant and building management to be very aware of the total owning cost of power distribution systems. Furthermore, these managers demand assurance of maximum return on capital investments in the power system. Power system studies are used to ensure that this maximum return is achieved, and the IEEE Brown Book is a valuable source of information about the purposes of, and techniques involved in, power system studies. The IEEE Brown Book ties together the essential fundamentals of power system studies; the most common studies for design or operation of a power system; and basic computational methods, including key information on the various types of computer systems and their requirements. By combining field experience in power system engineering with computer systems, engineers can perform detailed studies on both existing and proposed power systems. The planning, design, and operation of industrial and commercial power systems require several studies to assist in the evaluation of initial and future system performance, system reliability, safety, and the ability to grow with production and/or operating requirements. The power system analyses discussed in the IEEE Brown Book can help answer many questions about an existing system, such as the impact of expansion, the stability of the system, and the load distribution of the system. Chapters are devoted to different types of studies, and also include guidance on the preparation for these studies. Some of the studies discussed are: load flow studies, short-circuit studies, stability studies, motor starting studies, harmonic analysis studies, switching transient studies, reliability studies, cable ampacity studies, ground mat studies, coordination studies, and dc auxiliary power system analyses. As a result of focusing on computer studies, the IEEE Brown Book, in conjunction with other IEEE Color<br />\n
          \t\t\t\t<br />\n
          Analytical Principle and Recommended Techniques most often employed in the Design, Operation and Trouble-Shooting of Electric Power Systems for Industrial Facilities and Commerical Buildings. Covers Basic Principles and Specific Techniques for Short-Circuit, Load Flow, Transient Stability, Coordination and other Types of Analysis.<br />\n
          Basic Tutorial Guide and Reference Source on Power System Analysis for Electrical Engineers who Design and Operate Industrial Plant and Commercial Building Power Systems.
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis (Brown Book)"
        -notes: "Inactive-Reserved"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#7949 …}
    #channels: Doctrine\ORM\PersistentCollection {#8105 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#8067 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#8119 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7747 …}
    -apiLastModifiedAt: DateTime @1754517600 {#7530
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1618437600 {#7524
      date: 2021-04-15 00:00:00.0 Europe/Paris (+02:00)
    }
    -author: ""
    -publishedAt: DateTime @904514400 {#7531
      date: 1998-08-31 00:00:00.0 Europe/Paris (+02:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: DateTime @1616626800 {#7480
      date: 2021-03-25 00:00:00.0 Europe/Paris (+01:00)
    }
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 488
    -documents: Doctrine\ORM\PersistentCollection {#7859 …}
    -favorites: Doctrine\ORM\PersistentCollection {#7929 …}
  }
]
Attributes 
[]
Component 
App\Twig\Components\ProductMostRecent {#108916
  +product: App\Entity\Product\Product {#7481
    #id: 8525
    #code: "IEEE00000613"
    #attributes: Doctrine\ORM\PersistentCollection {#8208 …}
    #variants: Doctrine\ORM\PersistentCollection {#4694 …}
    #options: Doctrine\ORM\PersistentCollection {#8519 …}
    #associations: Doctrine\ORM\PersistentCollection {#8476 …}
    #createdAt: DateTime @1751037490 {#7536
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#7535
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#8518 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#8503
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#7481}
        #id: 29109
        #name: "IEEE 399:1997"
        #slug: "ieee-399-1997-ieee00000613-240177"
        #description: """
          Revision Standard - Inactive-Reserved.<br />\n
          This IEEE Standards product is part of the Color Books family. Today’s intensely competitive business environment forces plant and building management to be very aware of the total owning cost of power distribution systems. Furthermore, these managers demand assurance of maximum return on capital investments in the power system. Power system studies are used to ensure that this maximum return is achieved, and the IEEE Brown Book is a valuable source of information about the purposes of, and techniques involved in, power system studies. The IEEE Brown Book ties together the essential fundamentals of power system studies; the most common studies for design or operation of a power system; and basic computational methods, including key information on the various types of computer systems and their requirements. By combining field experience in power system engineering with computer systems, engineers can perform detailed studies on both existing and proposed power systems. The planning, design, and operation of industrial and commercial power systems require several studies to assist in the evaluation of initial and future system performance, system reliability, safety, and the ability to grow with production and/or operating requirements. The power system analyses discussed in the IEEE Brown Book can help answer many questions about an existing system, such as the impact of expansion, the stability of the system, and the load distribution of the system. Chapters are devoted to different types of studies, and also include guidance on the preparation for these studies. Some of the studies discussed are: load flow studies, short-circuit studies, stability studies, motor starting studies, harmonic analysis studies, switching transient studies, reliability studies, cable ampacity studies, ground mat studies, coordination studies, and dc auxiliary power system analyses. As a result of focusing on computer studies, the IEEE Brown Book, in conjunction with other IEEE Color<br />\n
          \t\t\t\t<br />\n
          Analytical Principle and Recommended Techniques most often employed in the Design, Operation and Trouble-Shooting of Electric Power Systems for Industrial Facilities and Commerical Buildings. Covers Basic Principles and Specific Techniques for Short-Circuit, Load Flow, Transient Stability, Coordination and other Types of Analysis.<br />\n
          Basic Tutorial Guide and Reference Source on Power System Analysis for Electrical Engineers who Design and Operate Industrial Plant and Commercial Building Power Systems.
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis (Brown Book)"
        -notes: "Inactive-Reserved"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#7949 …}
    #channels: Doctrine\ORM\PersistentCollection {#8105 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#8067 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#8119 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#7747 …}
    -apiLastModifiedAt: DateTime @1754517600 {#7530
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1618437600 {#7524
      date: 2021-04-15 00:00:00.0 Europe/Paris (+02:00)
    }
    -author: ""
    -publishedAt: DateTime @904514400 {#7531
      date: 1998-08-31 00:00:00.0 Europe/Paris (+02:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: DateTime @1616626800 {#7480
      date: 2021-03-25 00:00:00.0 Europe/Paris (+01:00)
    }
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 488
    -documents: Doctrine\ORM\PersistentCollection {#7859 …}
    -favorites: Doctrine\ORM\PersistentCollection {#7929 …}
  }
  +label: "Most Recent"
  +icon: "check-xs"
  -mostRecentAttributeCode: "most_recent"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}
ProductState App\Twig\Components\ProductState 100.0 MiB 0.24 ms
Input props 
[
  "product" => App\Entity\Product\Product {#102138
    #id: 8524
    #code: "IEEE00000612"
    #attributes: Doctrine\ORM\PersistentCollection {#102121 …}
    #variants: Doctrine\ORM\PersistentCollection {#102118 …}
    #options: Doctrine\ORM\PersistentCollection {#102114 …}
    #associations: Doctrine\ORM\PersistentCollection {#102116 …}
    #createdAt: DateTime @1751037490 {#102146
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#102119
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#102132 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#102156
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#102138}
        #id: 29105
        #name: "IEEE 399:1990"
        #slug: "ieee-399-1990-ieee00000612-240176"
        #description: """
          Revision Standard - Superseded.<br />\n
          Superseded by 399-1997. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power System Analysis"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#102129 …}
    #channels: Doctrine\ORM\PersistentCollection {#102123 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#102127 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#102125 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#102139 …}
    -apiLastModifiedAt: DateTime @1754517600 {#102106
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#102145
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @661215600 {#102144
      date: 1990-12-15 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 384
    -documents: Doctrine\ORM\PersistentCollection {#102136 …}
    -favorites: Doctrine\ORM\PersistentCollection {#102134 …}
  }
  "showFullLabel" => "true"
]
Attributes 
[
  "showFullLabel" => "true"
]
Component 
App\Twig\Components\ProductState {#108981
  +product: App\Entity\Product\Product {#102138
    #id: 8524
    #code: "IEEE00000612"
    #attributes: Doctrine\ORM\PersistentCollection {#102121 …}
    #variants: Doctrine\ORM\PersistentCollection {#102118 …}
    #options: Doctrine\ORM\PersistentCollection {#102114 …}
    #associations: Doctrine\ORM\PersistentCollection {#102116 …}
    #createdAt: DateTime @1751037490 {#102146
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#102119
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#102132 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#102156
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#102138}
        #id: 29105
        #name: "IEEE 399:1990"
        #slug: "ieee-399-1990-ieee00000612-240176"
        #description: """
          Revision Standard - Superseded.<br />\n
          Superseded by 399-1997. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power System Analysis"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#102129 …}
    #channels: Doctrine\ORM\PersistentCollection {#102123 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#102127 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#102125 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#102139 …}
    -apiLastModifiedAt: DateTime @1754517600 {#102106
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#102145
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @661215600 {#102144
      date: 1990-12-15 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 384
    -documents: Doctrine\ORM\PersistentCollection {#102136 …}
    -favorites: Doctrine\ORM\PersistentCollection {#102134 …}
  }
  +appearance: "state-suspended"
  +labels: [
    "Superseded"
  ]
  -stateAttributeCode: "state"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}
ProductMostRecent App\Twig\Components\ProductMostRecent 100.0 MiB 0.96 ms
Input props 
[
  "product" => App\Entity\Product\Product {#102138
    #id: 8524
    #code: "IEEE00000612"
    #attributes: Doctrine\ORM\PersistentCollection {#102121 …}
    #variants: Doctrine\ORM\PersistentCollection {#102118 …}
    #options: Doctrine\ORM\PersistentCollection {#102114 …}
    #associations: Doctrine\ORM\PersistentCollection {#102116 …}
    #createdAt: DateTime @1751037490 {#102146
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#102119
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#102132 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#102156
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#102138}
        #id: 29105
        #name: "IEEE 399:1990"
        #slug: "ieee-399-1990-ieee00000612-240176"
        #description: """
          Revision Standard - Superseded.<br />\n
          Superseded by 399-1997. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power System Analysis"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#102129 …}
    #channels: Doctrine\ORM\PersistentCollection {#102123 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#102127 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#102125 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#102139 …}
    -apiLastModifiedAt: DateTime @1754517600 {#102106
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#102145
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @661215600 {#102144
      date: 1990-12-15 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 384
    -documents: Doctrine\ORM\PersistentCollection {#102136 …}
    -favorites: Doctrine\ORM\PersistentCollection {#102134 …}
  }
]
Attributes 
[]
Component 
App\Twig\Components\ProductMostRecent {#109008
  +product: App\Entity\Product\Product {#102138
    #id: 8524
    #code: "IEEE00000612"
    #attributes: Doctrine\ORM\PersistentCollection {#102121 …}
    #variants: Doctrine\ORM\PersistentCollection {#102118 …}
    #options: Doctrine\ORM\PersistentCollection {#102114 …}
    #associations: Doctrine\ORM\PersistentCollection {#102116 …}
    #createdAt: DateTime @1751037490 {#102146
      date: 2025-06-27 17:18:10.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#102119
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#102132 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#102156
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#102138}
        #id: 29105
        #name: "IEEE 399:1990"
        #slug: "ieee-399-1990-ieee00000612-240176"
        #description: """
          Revision Standard - Superseded.<br />\n
          Superseded by 399-1997. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Industrial and Commercial Power System Analysis"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#102129 …}
    #channels: Doctrine\ORM\PersistentCollection {#102123 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#102127 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#102125 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#102139 …}
    -apiLastModifiedAt: DateTime @1754517600 {#102106
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#102145
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @661215600 {#102144
      date: 1990-12-15 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 384
    -documents: Doctrine\ORM\PersistentCollection {#102136 …}
    -favorites: Doctrine\ORM\PersistentCollection {#102134 …}
  }
  +label: "Historical"
  +icon: "historical"
  -mostRecentAttributeCode: "most_recent"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}
ProductState App\Twig\Components\ProductState 100.0 MiB 0.24 ms
Input props 
[
  "product" => App\Entity\Product\Product {#108809
    #id: 8523
    #code: "IEEE00000611"
    #attributes: Doctrine\ORM\PersistentCollection {#108843 …}
    #variants: Doctrine\ORM\PersistentCollection {#108845 …}
    #options: Doctrine\ORM\PersistentCollection {#108849 …}
    #associations: Doctrine\ORM\PersistentCollection {#108847 …}
    #createdAt: DateTime @1751037489 {#108816
      date: 2025-06-27 17:18:09.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#108818
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#108833 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#109074
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#108809}
        #id: 29101
        #name: "IEEE 399:1980"
        #slug: "ieee-399-1980-ieee00000611-240175"
        #description: """
          New IEEE Standard - Superseded.<br />\n
          Superseded by 399-1990. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Power System Analysis (IEEE Brown Book)"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#108835 …}
    #channels: Doctrine\ORM\PersistentCollection {#108841 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#108837 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#108839 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#108826 …}
    -apiLastModifiedAt: DateTime @1754517600 {#108820
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#108821
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @343868400 {#108827
      date: 1980-11-24 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 223
    -documents: Doctrine\ORM\PersistentCollection {#108829 …}
    -favorites: Doctrine\ORM\PersistentCollection {#108831 …}
  }
  "showFullLabel" => "true"
]
Attributes 
[
  "showFullLabel" => "true"
]
Component 
App\Twig\Components\ProductState {#109089
  +product: App\Entity\Product\Product {#108809
    #id: 8523
    #code: "IEEE00000611"
    #attributes: Doctrine\ORM\PersistentCollection {#108843 …}
    #variants: Doctrine\ORM\PersistentCollection {#108845 …}
    #options: Doctrine\ORM\PersistentCollection {#108849 …}
    #associations: Doctrine\ORM\PersistentCollection {#108847 …}
    #createdAt: DateTime @1751037489 {#108816
      date: 2025-06-27 17:18:09.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#108818
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#108833 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#109074
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#108809}
        #id: 29101
        #name: "IEEE 399:1980"
        #slug: "ieee-399-1980-ieee00000611-240175"
        #description: """
          New IEEE Standard - Superseded.<br />\n
          Superseded by 399-1990. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Power System Analysis (IEEE Brown Book)"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#108835 …}
    #channels: Doctrine\ORM\PersistentCollection {#108841 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#108837 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#108839 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#108826 …}
    -apiLastModifiedAt: DateTime @1754517600 {#108820
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#108821
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @343868400 {#108827
      date: 1980-11-24 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 223
    -documents: Doctrine\ORM\PersistentCollection {#108829 …}
    -favorites: Doctrine\ORM\PersistentCollection {#108831 …}
  }
  +appearance: "state-suspended"
  +labels: [
    "Superseded"
  ]
  -stateAttributeCode: "state"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}
ProductMostRecent App\Twig\Components\ProductMostRecent 100.0 MiB 1.00 ms
Input props 
[
  "product" => App\Entity\Product\Product {#108809
    #id: 8523
    #code: "IEEE00000611"
    #attributes: Doctrine\ORM\PersistentCollection {#108843 …}
    #variants: Doctrine\ORM\PersistentCollection {#108845 …}
    #options: Doctrine\ORM\PersistentCollection {#108849 …}
    #associations: Doctrine\ORM\PersistentCollection {#108847 …}
    #createdAt: DateTime @1751037489 {#108816
      date: 2025-06-27 17:18:09.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#108818
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#108833 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#109074
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#108809}
        #id: 29101
        #name: "IEEE 399:1980"
        #slug: "ieee-399-1980-ieee00000611-240175"
        #description: """
          New IEEE Standard - Superseded.<br />\n
          Superseded by 399-1990. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Power System Analysis (IEEE Brown Book)"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#108835 …}
    #channels: Doctrine\ORM\PersistentCollection {#108841 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#108837 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#108839 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#108826 …}
    -apiLastModifiedAt: DateTime @1754517600 {#108820
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#108821
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @343868400 {#108827
      date: 1980-11-24 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 223
    -documents: Doctrine\ORM\PersistentCollection {#108829 …}
    -favorites: Doctrine\ORM\PersistentCollection {#108831 …}
  }
]
Attributes 
[]
Component 
App\Twig\Components\ProductMostRecent {#109141
  +product: App\Entity\Product\Product {#108809
    #id: 8523
    #code: "IEEE00000611"
    #attributes: Doctrine\ORM\PersistentCollection {#108843 …}
    #variants: Doctrine\ORM\PersistentCollection {#108845 …}
    #options: Doctrine\ORM\PersistentCollection {#108849 …}
    #associations: Doctrine\ORM\PersistentCollection {#108847 …}
    #createdAt: DateTime @1751037489 {#108816
      date: 2025-06-27 17:18:09.0 Europe/Paris (+02:00)
    }
    #updatedAt: DateTime @1754606304 {#108818
      date: 2025-08-08 00:38:24.0 Europe/Paris (+02:00)
    }
    #enabled: true
    #translations: Doctrine\ORM\PersistentCollection {#108833 …}
    #translationsCache: [
      "en_US" => App\Entity\Product\ProductTranslation {#109074
        #locale: "en_US"
        #translatable: App\Entity\Product\Product {#108809}
        #id: 29101
        #name: "IEEE 399:1980"
        #slug: "ieee-399-1980-ieee00000611-240175"
        #description: """
          New IEEE Standard - Superseded.<br />\n
          Superseded by 399-1990. This recommended practice is a reference source for engineers involved in industrial and commercial power systems analysis. It contains a thorough analysis of the power system data required, and the techniques most commonly used in computer-aided analysis, in order to perform specific power system studies of the following: short-circuit, load flow, motorstarting, cable ampacity, stability, harmonic analysis, switching transient, reliability, ground mat, protective coordination, DC auxiliary power system, and power system modeling.<br />\n
          \t\t\t\t
          """
        #metaKeywords: null
        #metaDescription: null
        #shortDescription: "IEEE Recommended Practice for Power System Analysis (IEEE Brown Book)"
        -notes: "Superseded"
      }
    ]
    #currentLocale: "en_US"
    #currentTranslation: null
    #fallbackLocale: "en_US"
    #variantSelectionMethod: "match"
    #productTaxons: Doctrine\ORM\PersistentCollection {#108835 …}
    #channels: Doctrine\ORM\PersistentCollection {#108841 …}
    #mainTaxon: Proxies\__CG__\App\Entity\Taxonomy\Taxon {#7482 …}
    #reviews: Doctrine\ORM\PersistentCollection {#108837 …}
    #averageRating: 0.0
    #images: Doctrine\ORM\PersistentCollection {#108839 …}
    -supplier: Proxies\__CG__\App\Entity\Supplier\Supplier {#7676 …}
    -subscriptionCollections: Doctrine\ORM\PersistentCollection {#108826 …}
    -apiLastModifiedAt: DateTime @1754517600 {#108820
      date: 2025-08-07 00:00:00.0 Europe/Paris (+02:00)
    }
    -lastUpdatedAt: DateTime @1578006000 {#108821
      date: 2020-01-03 00:00:00.0 Europe/Paris (+01:00)
    }
    -author: ""
    -publishedAt: DateTime @343868400 {#108827
      date: 1980-11-24 00:00:00.0 Europe/Paris (+01:00)
    }
    -releasedAt: null
    -confirmedAt: null
    -canceledAt: null
    -edition: null
    -coreDocument: "399"
    -bookCollection: ""
    -pageCount: 223
    -documents: Doctrine\ORM\PersistentCollection {#108829 …}
    -favorites: Doctrine\ORM\PersistentCollection {#108831 …}
  }
  +label: "Historical"
  +icon: "historical"
  -mostRecentAttributeCode: "most_recent"
  -localeContext: Sylius\Component\Locale\Context\CompositeLocaleContext {#1833 …}
}