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Model Number
Phase-segregated Differential Current Protection DIF (87)
Phase Overcurrent OC (50P/51P)
Earth Fault EF (50N/51N)
Sensitive Earth Fault SEF (50N/51N)
Thermal Overload THM (49)
Phase Undercurrent UC (37P)
Broken Conductor BCD (BC)
Circuit Breaker Fail CBF (50BF)
Cold Load Protection
Trip circuit supervision
Self supervision
CB State Monitoring
Trip Counter Alarm
∑I
Alarm
y
CB Operate Time Alarm
Metering
Fault records
Event records
Disturbance records
Table 2.1.2
Series Members and Functions
GRL150 -
100
⎯ 9 ⎯
110
120
400
6 F 2 S 0 8 2 8
410
420
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