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Model Number
Non-directional overcurrent OC (IDMT, DT, INST)
Non-directional earth fault EF (IDMT, DT, INST)
Non-directional sensitive earth fault SEF (IDMT, DT, INST)
Directional overcurrent DOC (IDMT, DT, INST)
Directional earth fault DEF (IDMT, DT, INST)
Directional sensitive earth fault DSEF (IDMT, DT, INST)
Undercurrent UC
Thermal over load THM
Non-directional negative phase overcurrent NOC (IDMT, DT, INST)
Directional negative phase overcurrent DNOC (IDMT, DT, INST)
Broken conductor detection BCD
Circuit breaker failure protection CBF
Cold load pick-up feature
Overvoltage OV (IDMT, DT, INST)
Undervoltage UV (IDMT, DT, INST)
Zero phase sequence overvoltage ZOV (IDMT, DT, INST)
Negative phase sequence overvoltage NOV (IDMT, DT, INST)
Frequency FRQ, DFRQ
Autoreclose function
Fault locator
Indication of the status of switching devices
Open and close commands for switching devices
Synchronism check function
MIMIC configuration picture
PLC function
CT supervision
VT supervision
Trip circuit supervision
Self supervision
CB state monitoring
Trip counter alarm
∑Iy alarm
CB operate time alarm
Multiple settings groups
Metering
Fault records
Alarm records
Event records
Disturbance records
Communication
IDMT: inverse definite minimum time
DT: definite time
INST: instantaneous
Table 1.1.1
Series Members and Functions
GRD150-
100 series
⎯
⎯
11
6 F 2 S 0 8 4 2
200 series
300 series
400 series
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