ABB REM615 ANSI 5.0 FP1 Product Manual page 11

quired, be sent to other devices using analog
horizontal GOOSE messaging. Temperature values
can also be received from other devices over the
station bus, thus increasing the extent of relevant
information.
The standard configuration D includes one conven-
tional residual current (Io) input and three com-
bi-sensor inputs for phase currents and phase volt-
ages. The connection of the three combi-sensors is
made with RJ-45 type of connectors.
—
Figure 5. Motor
protection and control of
circuit breaker controlled
motors using standard
configurations A,B, and E
3
52
M
Figure 5 illustrates an example of motor
protection and control of circuit breaker
controlled motors using standard configurations
A, B, and E. To prevent possible power system
instability due to busbar voltage collapse, the
REM615 Conf A
51P/50P
50BF
49M
51LR/66
52
37M
RTD
AFD
M
250HP
Sensors offer certain benefits compared to conven-
tional current and voltage instrument transform-
ers, for example, current sensors do not saturate at
high currents, they consume less energy and they
weigh less. In voltage sensors the risk of ferro-reso-
nance is eliminated. The sensor inputs also enable
the use of the relay in compact medium voltage
switchgears, such as ABB's ReliaGear® ND Digital,
Advance Digital and SafeGear Digital, with limited
space for conventional measuring transformers,
thus requiring the use of sensor technology. Fur-
ther, the adapters also enable the use of sensors
with Twin-BNC connectors.
Y
REF615 Conf D
51P/50P
3
50BF
51G/50G
AFD
52
REM615 Conf B
3 3
51P/50P
50BF
49M
51LR/66
52
27/27PS
59
RTD
AFD
M
500HP 1500HP
3
simultaneous starting of several motors can be
inhibited with the "restart inhibit" input of
REM615. The optional RTD/mA inputs are utilized
for motor winding and bearing temperature
supervision.
Υ or
3
REM615 Conf E
3
51P/50P
50BF
49M
51LR/66
52
27/27PS
59
32U
87M (Restrained Diff)
RTD
AFD
3
M
1000HP
11
REM615 Conf E
51P/50P
50BF
49M
51LR/66
27/27PS
59
32U
87M (Self-bal. Diff)
RTD
AFD