ABB REM615 ANSI - 3. Protection functions

ABB 6
1MAC251744 -PG Rev. A
Issued: 03.01.2010
Motor Protection
REM615 ANSI
Product Version 2.0
3. Protection functions
 e REM615 relay o ers all the functionality needed
to manage motor starts and normal drive operations
also including protection and fault clearance in
abnormal situations.  e main features of this motor
relay include thermal overload protection, motor
start-up time supervision, locked rotor protection
and protection against too frequent motor starts.
Furthermore, the relay o ers negative phase sequence
current unbalance protection, motor running stall
protection, loss-of-load supervision, phase-reversal
protection and a provision to perform a forced
emergency start.
Figure 2. Protection function overview for standard con guration
C with analog inputs “CA”
3
REM615 V2.0 ANSI
M
37
66/
51LRS
51LR
51P 50P
46R49M 46M-1
87
2 or 3
Υor Δ
59G
3
27
27PS
67/
51N
46M-2
50
BF
50N
BF
52
51G
1
Available with Arc Flash Detection (AFD) option
3
AFD-
3
1
AFD-
1
1
AFD-
2
1
6047
Figure 1. Protection function overview for standard con guration
A with analog inputs “AA”
3
REM615 V2.0 ANSI
M
37
66/
51LRS
51LR
51P 50P
46R49M 46M-1
87
46M-2
50
BF
50N
BF
52
51G
1
Available with Arc Flash Detection (AFD) option
3
AFD-
3
1
AFD-
1
1
AFD-
2
1
 e REM615 also incorporates non-directional and
directional earth-fault protection, backup overcurrent
protection, three phase undervoltage protection, and
negative phase sequence overvoltage and positive sequence
undervoltage protection. {New paragraph} Enhanced with
optional hardware and so ware, the relay also features three
light detection channels for arc fault protection of the circuit
breaker, busbar and cable compartment of metal-enclosed
indoor switchgear.
 e arc-fault protection sensor interface is available on the
optional communication module. Fast tripping increases
personal safety and limits material damage within the
switchgear in an arc fault situation. Figures 1 through 2
show the protection functions available for the two standard
con gurations and their available analog inputs for each
con guration. See section 23. Selection and ordering data
for details on the available analog inputs for each standard
con guration.