Single Phase Watt-hour Meter - OB91 Series
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Technical Data

Voltage Rating (Vn): 100V, 110V, 120V, 127V, 200V, 220V, 230V, 240V
Frequency (Fn): 50Hz, 60Hz
Starting load as % of basic current: 0.5%
No creep on voltage variation of: -20% ~ +10%
AC voltage test 50/60Hz, 1 minute: 2 kV
Impulse voltage test with surge wave: 6 kV