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l. Frequency 0,99 to 1,01 of nominal frequency continuously;0,98 to 1,02 short time.
m. Harmonics Harmonic distortion not exceeding 10 % of the total r.m.s. voltage between live conductors
for the sum of the 2
nd
through to the 5
th
harmonic.
n. Voltage interruption Supply interrupted or at zero voltage for not more than 3 ms at any random time
in the supply cycle with more than 1 s between successive interruptions.
o. Voltage dips Voltage dips not exceeding 20 % of the peak voltage of the supply for more than one cycle
with more than 1 s between successive dips.
p. Grounding cables must be parallel as follows:
Requirement of power supply at the userās end:
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