ABB Relion 670 series REC670

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Differential protection

Table 27. 1Ph High impedance differential protection HZPDIF

Function Range or value Accuracy

Operate voltage (20-400) V

I=U/R

± 1.0% of I

Reset ratio >95% -

Maximum continuous power

U>Trip

/SeriesResistor ≤200 W

Operate time 10 ms typically at 0 to 10 x U

Reset time 105 ms typically at 10 to 0 x U

Critical impulse time 2 ms typically at 0 to 10 x U

Bay control REC670

1MRK511232-BEN E

Pre-configured

Product version: 1.2

38 ABB

ABB Relion 670 series REC670 - Page 38