Circuit Breaker Fail And Undercurrent Protection; Broken Conductor Protection; Thermal Overload Protection; Cold Load Pickup Protection - GE MiCOM P40 Agile Technical Manual

P14D
Directional boundary hysteresis
IDMT operate
IDMT reset
DT operate
DT reset
3.6

CIRCUIT BREAKER FAIL AND UNDERCURRENT PROTECTION

I< Pick-up
I< Drop-off
Timers
Reset time
3.7

BROKEN CONDUCTOR PROTECTION

Pick-up
Drop-off
DT operate
3.8

THERMAL OVERLOAD PROTECTION

Thermal alarm pick-up
Thermal overload pick-up
Cooling time accuracy
Repeatability
Note:
Operating time measured with applied current of 20% above thermal setting.
3.9

COLD LOAD PICKUP PROTECTION

I> Pick-up
IN> Pick-up
I> Drop-off
IN> Drop-off
DT operate
Repeatability
P14D-TM-EN-8
Chapter 22 - Technical Specifications
< 1°
+/- 5% or 70 ms, whichever is greater (1.05 – <2) Is
+/- 5% or 50 ms, whichever is greater (2 – 20) Is
< 40 ms
+/- 2% or 80 ms, whichever is greater (1.05 – <2) Is
+/- 2% or 60 ms, whichever is greater (2 – 20) Is
Setting +/- 5%
Setting +/- 5% or 20 mA, whichever is greater
100% of setting +/- 5% or 20 mA, whichever is greater
+/- 2% or 50 ms, whichever is greater
< 35 ms
Setting +/- 2.5%
0.95 x Setting +/- 2.5%
+/- 2% or 55 ms, whichever is greater
Calculated trip time +/- 10%
Calculated trip time +/- 10%
+/- 15% of theoretical
<5%
Setting +/- 1.5%
Setting +/- 1.5%
0.95 x Setting +/- 1.5%
0.95 x Setting +/- 1.5%
+/- 0.5% or 50 ms, whichever is greater
+/- 1%
475