GE P645

5 PERFORMANCE OF VOLTAGE PROTECTION FUNCTIONS
5.1 UNDERVOLTAGE PROTECTION (P643/5)
Pick-up (IDMT and DT) Setting +/- 5%
Drop-off (IDMT and DT) 1.02 x Setting +/-5%
Operate (IDMT and DT) +/- 2% or 50 ms, whichever is greater
Reset < 50 ms
Repeatability < 1%
5.2 OVERVOLTAGE PROTECTION
Pick-up (IDMT and DT) Setting +/- 5%
Drop-off (IDMT and DT) 0.98 x Setting +/-5%
Operate (IDMT and DT) +/- 2% or 50 ms, whichever is greater
Reset < 50 ms
Repeatability < 1%
5.3 RESIDUAL OVERVOLTAGE PROTECTION (P643/5)
Pick-up (IDMT and DT) Setting +/- 5% or 50 mV, whichever is greater
Drop-off (IDMT and DT) 0.95 x Setting +/-5%
IDMT operate +/- 2% or 55 ms, whichever is greater
DT operate +/- 2% or 70 ms or whichever is greater
Reset time < 50 ms
Disengagement time < 35 ms
Pick-up and drop-off repeatability <1%
Timer repeatability < 10 ms
5.4 NEGATIVE SEQUENCE VOLTAGE PROTECTION
DT Pick-up Setting +/- 5%
DT Drop-off 0.95 x Setting +/-5%
DT operate
+/- 2% or 50 ms, whichever is greater (accelerated mode)
+/- 2% or 60
ms, whichever is greater (normal mode)
Disengagement time <35 ms
Operating time Repeatability < 5 ms
Operating threshold repeatability < 1%
Chapter 21 - Technical Specifications P64x
464 P64x-TM-EN-1.3