Single phase static watt-hour meter is designed for measurement of electric energy flowing in one or two directions in households and at commercial customers in single phase 2 wire networks.

Class Index                                       Class 1
Operating voltage range                 From 0.7 to 1.2Un
Reference voltage Un                     220 V
Reference current Ib(Imax)           10(40) A
Meter constant                                 1600 imp/kWh
Reference frequency                      50 Hz
Power consumption                       Voltage circuit ≤1W and 3VA 
                                                           Current circuit ≤0.5VA 
Display                                 By Counter or LCD
Operating Temperature Range    -10℃ to 55℃
Limit range of operation                -20℃ to 60℃
Storage Temperature Range       -25℃ to 70℃
Relative humidity                            Annual mean <75%
Overall dimension                         188mm × 110mm × 65mm
Weight                                             0.72kg

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