IEEE C62.37.1:2000

New IEEE Standard - Superseded.
Applications information on fixed voltage and gated thyristor surge protective devices(SPDs) are provided. Key device parameters and their sensitivities are explained. Several workedtelecommunication circuit design examples are given.

This Guide is intended to complement the IEEE Standard Test Specification for Thyristor Diode Surge Protective Devices (ANSI/IEEE C62.37-1996) The definitions used are the same. This publication contains information on basic function and component description, general terms and definitions, electrical environment, comparative SPD technologies, parameter interpretation and application, example designs.
This application guide applies to Thyristor Surge Protective Devices components used in systems with voltages up to 1000Vrms or 1200Vdc. These components are designed to limit overvoltages and divert surge currents by limiting the voltage and switching to a low impedance actions. Although telecommunication circuits are the main application of Thyristor SPDs, this guide will also provide useful information for other protection applications. When properly applied it protects telecommunication circuits from failure and damage.