7.2 Industrial feeder protection
7 Application
Technical description
186
VAMP 24h support phone +358 (0)20 753 3264
VM50.EN004
7.2.
Industrial feeder protection
3
3
v
amp50app
3
+
VAMP 5
0
Overcurrent and Earth/fault Relay
Power
Error
Alarm
Trip
VAMP 5
0
Overcurrent and Earth/fault Relay
Power
Error
Alarm
Trip
M
Figure 7.2-1 VAMP 52 feeder/motor protection relay used in cable protection
of an industry plant network
VAMP 52 support directional earth fault protection and three-
phase overcurrent protection which is required in a cable
feeder. Furthermore, the thermal stage can be used to protect
the cable against overloading. All necessary motor protection
functions are supported when using motor application mode.
This example also includes fast arc protection.