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5 Functions
5.1 Functions included in AQ-C213
The AQ-C213 capacitor bank protection IED includes the following functions as well as the number of
stages for those functions.
Table. 5.1 - 4. Protection functions of AQ-C213.
Name
(number of
stages)
IEC
ANSI
Description
NOC (4)
I>
I>>
I>>>
I>>>>
50/51
Non-directional overcurrent protection
UCP (1)
Iuc>
46C
Capacitor bank unbalance protection
NEF (4)
I0>
I0>>
I0>>>
I0>>>>
50N/51N
Non-directional earth fault protection
OV (4)
U>
U>>
U>>>
U>>>>
59
Overvoltage protection
UV (4)
U<
U<<
U<<<
U<<<<
27
Undervoltage protection
NOV (4)
U0>
U0>>
U0>>>
U0>>>>
59N
Neutral overvoltage protection
CUB (4)
I2>
I2>>
I2>>>
I2>>>>
46/46R/46L
Negative sequence overcurrent/
phase current reversal/
current unbalance protection
VUB (4)
U1/U2>/<
U1/U2>>/<<
U1/U2>>>/<<<
U1/U2>>>>/<<<<
47/27P/59PN
Sequence voltage protection
HOC (4)
Ih>
Ih>>
Ih>>>
Ih>>>>
50H/51H/68H
Harmonic overcurrent protection
TOLF (1)
TF>
49F
Line thermal overload protection
VMEM
-
-
Voltage memory
PGS (1…10) PGx>/<
99
Programmable stage
ARC (1)
IArc>/I0Arc>
50Arc/50NArc
Arc fault protection (optional)
Table. 5.1 - 5. Control functions of AQ-C213.
Name
IEC
ANSI
Description
SGS
-
-
Setting group selection
A
AQ
Q-C213
-C213
Instruction manual
Version: 2.04
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