In interpreting 46 CFR, Subchapter J (Electrical Engineering), what are the acceptable variations of steady state voltage and frequency for electrical equipment rated for values of 460 VAC and 60 Hz?

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Accepted Answer

voltage between 414.0 and 487.6 VAC frequency between 57 and 63 Hz

Answer

voltage between 432.4 and 506.0 VAC frequency between 57 and 63 Hz

Answer

voltage between 437.0 and 483.0 VAC frequency between 54 and 63.6 Hz

Answer

voltage between 437.0 and 483.0 VAC frequency between 56.4 and 66 Hz

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