Rockwell Automation 865 Differential Protection Relay - Manual (Page 159)

Applications 8-17
865-UM001A-EN-P – July 2009
CB
CLOSE COIL
OPEN COIL
-V
AUX
-V
AUX
Delay
Alarm relay
for trip
circuit failure
close control
trip circuit
failure alarm
R1
+V
AUX
865
Digital input
Trip relay
relay compartment
circuit breaker compartment
+
K1
1
DI
+48 V
A snap in relay module K1:
Phoenix Contact EMG 17-REL/KSR-120/21 Au
Coil: 96 .. 127 V, 24 kohm
Contact material: 5 mm Au (AgPd60)
Width: 17.5 mm
Assembly: DIN EN 50022 mounting rail
TripCircuitSup200OpenP os
Figure 8.11 – Typical Trip Circuit Supervision when Circuit-breaker is Open
(Supervised circuitry in this CB position is double-lined.)