MiCOM P921/P922/P923 - Schneider - error

P92x/EN TD/H42Page 34/42Technical GuideTechnical DataMiCOM P921/P922/P92312. ACCURACYIf no range is specified for the validity of the accuracy, then the specified accuracyshall be valid over the full setting range.12.1 Reference conditionsQuantity Reference conditions Test toleranceGeneralAmbient temperature 20 °C ±2°CAtmospheric pressure 86kPa to 106kPa -Relative humidity 45 to 75 % -Input energising quantityVoltage Vn ±5%Frequency 50 or 60Hz ±0.5%Auxiliary supplyDC 48V or 110V ±5%AC 63.5V or 110V12.2 Measurements accuracyQuantity Range AccuracyVoltage Vn ±2%Frequency 40 - 70Hz ±10mHz12.3 Protection AccuracyFunctions Range Operate Reset Timer AccuracyUndervoltage protection(V>)Residual voltageprotection(V 0 >, V 0 >> andV 0 >>>)5-130V (range 1)20-480V (range 2)5-260V (range 1)20-960V (range 2)0.5-130V (range 1)2-480V (range 2)DT: Vs ±2%IDMT: V operate = 0.95Vs ±2%DT: Vs ±2%IDMT: V operate = 1.1Vs ±2%DT: Vs ±2%IDMT: V operate = 1.1Vs ±2%(if direct measurement)(1.02-1.05) V operate ±2% Greater of 2% or 20msGreater of 5% or 40ms(0.95-0.98) V operate ±2% Greater of 2% or 20msGreater of 5% or 40ms0.95 V operate ±2% Greater of 2% or 20msGreater of 5% or 40msUnder/Over frequency 40 – 70Hz DT: fs ±10mHz fs ±50mHz Greater of 2% or 20msNOTE:For residual voltage protection:– 0.5V → 4V (range 1): hysteresis = V operate – 0.2V– 2V → 16V (range 2): hysteresis = V operate – 0.8VThe instantaneous operating time for under/over frequency is50 ms (minimum).The instantaneous operating time for under/over voltage is≤30 ms.