5 Functions
5.1 Functions included in AQ-M210
The AQ-M210 motor protection relay includes the following functions as well as the number of stages
for those functions.
Table. 5.1 - 4. Protection functions of AQ-M210.
Name (number
of stages)
IEC
ANSI
Description
NOC (4)
I>
I>>
I>>>
I>>>>
50/51
Non-directional overcurrent protection
NEF (4)
I0>
I0>>
I0>>>
I0>>>>
50N/51N
Non-directional earth fault protection
CUB (4)
I2>
I2>>
I2>>>
I2>>>>
46/46R/46L
Negative sequence overcurrent/
phase current reversal/
current unbalance protection
HOC (4)
Ih>
Ih>>
Ih>>>
Ih>>>>
50H/51H/68H
Harmonic overcurrent protection
CBFP (1)
CBFP
50BF/52BF
Circuit breaker failure protection
REF (1)
I0d>
87N
Low-impedance or high-impedance restricted earth fault/
cable end differential protection
MST
-
-
Motor status monitoring
TOLM (1)
TM>
49M
Machine thermal overload protection
LCR (1)
Ist>
48/14
Motor start/locked rotor monitoring
FSP (1)
N>
66
Frequent start protection
NUC (1)
I<
37
Non-directional undercurrent protection
MJP (1)
Im>
51M
Mechanical jam protection
RTD (1)
-
-
Resistance temperature detectors
PGS (1)
PGx>/<
99
Programmable stage
ARC (1)
IArc>/I0Arc>
50Arc/50NArc
Arc fault protection (optional)
Table. 5.1 - 5. Control functions of AQ-M210.
Name
IEC
ANSI
Description
SGS
-
-
Setting group selection
OBJ
-
-
Object control and monitoring
(5 objects available)
CIN
-
-
Indicator object monitoring
(5 indicators available)
A
AQ
Q-M210
-M210
Instruction manual
Version: 2.04
50