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          This standard provides background information on supply voltage fluctuations caused by variations in power demands of installations. This standard presents the manifestation of these supply voltage fluctuations as lamp flicker. The standard presents a flicker measurement method using a meter that is described in IEC 61000-4-15.6 This standard defines the short-term (Pst) and long-term (Plt) indices used for the quantification of lamp flicker. For different system voltages, this standard defines planning levels for flicker that the utilities need their system to be limited to in order to reduce customer complaints. This standard defines the procedure for determining emission limits for individual installations at the point of common coupling (PCC) so that the planning levels can be achieved in practice. Then, an assessment procedure for evaluating flicker compliance against emission limits is described. This standard also presents methodologies to analyze background flicker to identify the flicker contribution of individual sources.<br />\n
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          This standard provides background information on supply voltage fluctuations caused by variations in power demands of installations. This standard presents the manifestation of these supply voltage fluctuations as lamp flicker. The standard presents a flicker measurement method using a meter that is described in IEC 61000-4-15.6 This standard defines the short-term (Pst) and long-term (Plt) indices used for the quantification of lamp flicker. For different system voltages, this standard defines planning levels for flicker that the utilities need their system to be limited to in order to reduce customer complaints. This standard defines the procedure for determining emission limits for individual installations at the point of common coupling (PCC) so that the planning levels can be achieved in practice. Then, an assessment procedure for evaluating flicker compliance against emission limits is described. This standard also presents methodologies to analyze background flicker to identify the flicker contribution of individual sources.<br />\n
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          This standard provides background information on supply voltage fluctuations caused by variations in power demands of installations. This standard presents the manifestation of these supply voltage fluctuations as lamp flicker. The standard presents a flicker measurement method using a meter that is described in IEC 61000-4-15.6 This standard defines the short-term (Pst) and long-term (Plt) indices used for the quantification of lamp flicker. For different system voltages, this standard defines planning levels for flicker that the utilities need their system to be limited to in order to reduce customer complaints. This standard defines the procedure for determining emission limits for individual installations at the point of common coupling (PCC) so that the planning levels can be achieved in practice. Then, an assessment procedure for evaluating flicker compliance against emission limits is described. This standard also presents methodologies to analyze background flicker to identify the flicker contribution of individual sources.<br />\n
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          The flickermeter specifications in this part of IEC 61000 relate only to measurements of 120 V and 230 V, 50 Hz and 60 Hz inputs. Characteristics of some incandescent lamps for other voltages are sufficiently similar to the values in Table 1 and Table 2, that the use of a correction factor can be applied for those other voltages. Some of these correction factors are provided in the Annex B. Detailed specifications for voltages and frequencies other than those given above, remain under consideration.<br />\n
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