Wiring; Typical Wiring - Deif SGC 121 User Manual

Terminal Text
40 CT1 S2
41 CT1 S1
42 SENSOR COMM
2.5

Wiring

2.5.1

Typical wiring

NOTE The wiring diagram is only an example. Use the wiring diagram for the specific application during installation.
Fuses:
• F4, F5: 2 A AC max. time-delay fuse/MCB, c-curve
Relays
• Protect the breaker relays against 4 kV surges as described in the IEC 61000-4-5 standard.
• Protect relay cards used with the controller against reverse battery voltages.
Digital outputs
If a digital output is connected to a relay, the relay must include freewheeling diodes.
Communication ports
Communication ports for RS-485 (terminals 15 and 16) have built-in 120 Ω resistors.
User manual 4189341354A EN
Description
CT input 1 from generator phase L1
Sensor common point
MPU input
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