PC37.09-2018/Cor 1 - Draft Standard Test Procedures for AC High-Voltage Circuit Breakers with Rated Maximum Voltage above 1000V - Corrigendum 1
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a. Clause 4.10.4 the ratio of zero and positive sequence currents in single phase capacitive switching procedure should be less than 3.0 rather than greater than 3.0. b. Errors in clause and regarding the procedure for separate making tests. c. change in punctuation for clarity d. Throughout document unify terms for rated voltage, including in equations to use "Ur" rather than "V" e. Clause 5.9 and 5.9.1 have identical text, modify to make clear. f. Clause 4.1.2 i) is missing some words required for clear meaning. g. Correct references and terms used by both C37.04 and C37.09 so they are identical
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PAR Approval
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Historical Base Standard
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