Name
(number of
stages)
IEC
ANSI
Description
HOC (4)
Ih>
Ih>>
Ih>>>
Ih>>>>
50H/51H/68H
Harmonic overcurrent protection
CBFP (1)
CBFP
50BF/52BF
Circuit breaker failure protection
PQS (4)
P, Q, S>/<
P, Q, S>>/<<
P, Q, S>>>/<<<
P, Q, S>>>>/<<<<
32
Power protection
DIF (1)
Idb>/Idi>/I0dHV>/I0dLV> 87T/87N/87G
Generator/transformer differential protection
TOLM (1)
TM>
49M
Machine thermal overload protection
SEF (1)
U03rd>
64S
100 % stator earth fault protection
UEX (1)
Q<
40
Underexcitation protection
UIM (2)
Z<
Z<<
21U
Underimpedance protection
VOC (1)
Iv>
51V
Voltage-restrained overcurrent protection
IAE (1)
I>U<IAE
50/27
Inadvertent energizing protection
OOS (1)
Pslip
78
Pole slip protection
VHZ (1)
V/Hz>
24
Volts-per-hertz overexcitation protection
UPF (1)
PF<
55
Power factor protection
VMEM (1)
-
-
Voltage memory
PGS (1)
PGx>/<
99
Programmable stage
ARC (1)
IArc>/I0Arc>
50Arc/50NArc
Arc fault protection (optional)
Table. 5.1 - 5. Control functions of AQ-G257.
Name
IEC
ANSI
Description
SGS
-
-
Setting group selection
OBJ
-
-
Object control and monitoring
(10 objects available)
CIN
-
-
Indicator object monitoring
(10 indicators available)
VJP
∆
φ
78
Vector jump
SYN
ΔV/Δa/Δf
25
Synchrocheck
GSYN
ΔV/Δa/Δf
25
Synchronizer (optional)
Table. 5.1 - 6. Monitoring functions of AQ-G257.
Name
IEC
ANSI
Description
CTS (2)
-
-
Current transformer supervision
VTS
-
60
Voltage transformer supervision
DR
-
-
Disturbance recorder
THD
-
-
Total harmonic distortion
CBW
-
-
Circuit breaker wear monitor
Genera
Generattor Commander
or Commander
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
IM00001
19
Summary of Contents for Generator Commander
Page 1: ...Generator Commander Instruction manual...
Page 2: ......