Performance Of Voltage Protection Functions; Undervoltage Protection (P643/5); Overvoltage Protection; Residual Overvoltage Protection (P643/5) - GE P642 Technical Manual

Chapter 21 - Technical Specifications
5

PERFORMANCE OF VOLTAGE PROTECTION FUNCTIONS

5.1

UNDERVOLTAGE PROTECTION (P643/5)

Pick-up (IDMT and DT)
Drop-off (IDMT and DT)
Operate (IDMT and DT)
Reset
Repeatability
5.2

OVERVOLTAGE PROTECTION

Pick-up (IDMT and DT)
Drop-off (IDMT and DT)
Operate (IDMT and DT)
Reset
Repeatability
5.3

RESIDUAL OVERVOLTAGE PROTECTION (P643/5)

Pick-up (IDMT and DT)
Drop-off (IDMT and DT)
IDMT operate
DT operate
Reset time
Disengagement time
Pick-up and drop-off repeatability
Timer repeatability
5.4

NEGATIVE SEQUENCE VOLTAGE PROTECTION

DT Pick-up
DT Drop-off
DT operate
Disengagement time
Operating time Repeatability
Operating threshold repeatability
464
Setting +/- 5%
1.02 x Setting +/-5%
+/- 2% or 50 ms, whichever is greater
< 50 ms
< 1%
Setting +/- 5%
0.98 x Setting +/-5%
+/- 2% or 50 ms, whichever is greater
< 50 ms
< 1%
Setting +/- 5% or 50 mV, whichever is greater
0.95 x Setting +/-5%
+/- 2% or 55 ms, whichever is greater
+/- 2% or 70 ms or whichever is greater
< 50 ms
< 35 ms
<1%
< 10 ms
Setting +/- 5%
0.95 x Setting +/-5%
+/- 2% or 50 ms, whichever is greater (accelerated mode)
+/- 2% or 60 ms, whichever is greater (normal mode)
<35 ms
< 5 ms
< 1%
P64x
P64x-TM-EN-1.3