Panasonic KW8M User Manual

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Contents

KW8M Eco-POWER METER709.2 Input Specifications9.2.1 Electric power inputPhase and wire systemSingle-phase two-wire systemSingle-phase three-wire systemThree-phase three-wire systemThree-phase four-wire system(common)MeasuredinputvoltageRatingSingle-phase two-wire : 0-440V AC (Line voltage)Single-phase three-wire : 0-220V AC (Phase voltage)Three-phase three-wire : 0-440V AC (Line voltage)Three-phase four-wire : 0-254V AC (Phase voltage)Allowable measurementvoltageUp to 120% of rated input voltageSingle-phase two-wire : 0-528V AC (Line voltage)Single-phase three-wire : 0-264V AC (Phase voltage)Three-phase three-wire : 0-528V AC (Line voltage)Three-phase four-wire : 0-300V AC (Phase voltage)VT ratio1.00 to 99.99 (Set with setting mode)*Voltage transformer (VT) is required when you measure a loadwith voltage over 440V system.*Secondary voltage rating of VT is 110V.Inputcurrent Primary side rating・5A/50A/100A/250A/400A/600A (In case using dedicated CT)(Select with setting mode)・1 to 4000A (Set with setting mode)*Use a CT with secondary side current of 5A when measure 600Aor more.SpecialfunctionsCut-off current 1.0 to 50.0%F.S (Set with setting mode)Current threshold forhour meter 1.0 to 100.0％F.S.Accuracy(without errorin CT and VT)Instantaneous electric power(active/reactive/apparent)Integral electric power(active/reactive/apparent)Electricity chargeWithin ± (2.0 % F.S. + 1 digit)In case of 5 A CT mode, within ± (2.5 % F.S. + 1 digit)(at 20 °C, rated input, rated frequency, power factor 1)*Accuracy coverage: 5 to 100 % of rated currentCurrentWithin ± (1.0 % F.S. + 1 digit)(at 20 °C 68 °F rated input, rated frequency, power factor 1)*Accuracy coverage: 5 to 100 % of rated currentVoltage Within ± (1.0 % F.S. + 1 digit)(at 20 °C 68 °F rated input, rated frequency, power factor 1)Hour meter±(0.01％+1digit) (at 20℃)In case power on start or current energizing±(0.01％+1s+1 digit)TemperaturecharacteristicsWithin ± (1.0 % F.S. + 1 digit)In case of 5 A CT mode, within ± (1.5 % F.S. + 1 digit)(Range of -10 to 50 °C, rated input, power factor 1)FrequencycharacteristicsWithin ± (1.0 % F.S. + 1 digit)In case of 5 A CT mode, within ± (1.5 % F.S. + 1 digit)(Frequency change ± 5 % based on rated frequency,rated input, power factor 1)9.2.2 Pulse inputInput mode Addition (Fixed)Max. counting speed 2kHz /30Hz (Select with setting mode)Pulse inputMin. input signal width:0.25ms (When 2kHz selected) /16.7ms (When 30Hz selected)ON:OFF ratio = 1 : 1Input signalContact / No contact (open collector)・Impedance when shorted: 1kΩ・Residual voltage when shorted: Max. 2V・Impedance when open: 100kΩOutput mode HOLD (Over count)Number of Digit 8-digit (0 to 99999999)