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Model Number
Directional Phase Fault O/C OC1 – OC4 (67/50P, 67/51P)
Directional Earth Fault O/C EF1 – EF4 (67/50N, 67/51N)
Directional Sensitive Earth Fault SEF1 – SEF4(67/50N, 67/51N)
Phase Undercurrent UC1, UC2 (37P)
Thermal Overload THM (49)
Directional Negative Phase Sequence Overcurrent NOC1, NOC2 (67/46)
Phase Overvoltage OV1, OV2 (59)
Phase Undervoltage UV1, UV2 (27)
Zero Phase Sequence Overvoltage ZOV1, ZOV2 (59N)
Negative Phase Sequence Overvoltage NOV1, NOV2 (47)
Under/Overfrequency FRQ1 – FRQ4 (81U/81O)
Broken Conductor BCD
Circuit Breaker Fail CBF (50BF)
Cold Load Protection
Auto-reclose (79)
Fault Locator
CT Supervision
VT Supervision
Trip circuit supervision
Self supervision
CB State Monitoring
Trip Counter Alarm
∑I
Alarm
y
CB Operate Time Alarm
Four settings groups
Metering
Fault records
Event records
Disturbance records
IEC60870-5-103 Communication
Available functions above are depends on the scheme switch [APPL] setting in models 400 and
420.
CAUTION:
Do not change the APPL setting under service condition of the relay.
Table 1.1.1 Series Members and Functions
⎯
⎯
9
6 F 2 S 0 7 5 8
GRD140 -
110
400
420
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