Breakers; Breaker Types; Breaker Spring Load Timer - Deif SGC 420 User Manual

Text
Nominal load current
Nominal 4th CT current
Nominal speed
Nominal power (kW)
5.3

Breakers

5.3.1

Breaker types

There are 2 breaker type settings.
Pulse
This setting is for breakers that have 2 separate coils for opening and closing the breaker.
The controller uses these outputs:
• To close the circuit breaker, the Close Gen breaker output is activated. The output is active until the Breaker Close Pulse
timer expires. You can configure a digital input as Breaker Close Feedback and a Breaker Feedback timer. If the
controller does not receive feedback before the Breaker feedback timer expires, a Close Failure alarm is shown. If
Breaker Close Feedback is not configured, then an alarm is not shown.
• To open the circuit breaker, the Open Gen breaker output is activated. The output is active until the Breaker Open Pulse
timer expires. You can configure a digital input as Breaker Open Feedback and a Breaker Feedback timer. If the controller
does not receive feedback before the Breaker feedback timer expires, an Open Failure alarm is shown. If Breaker Open
Feedback is not configured, then an alarm is not shown.
Continuous
This setting is for breakers that have a single coil for opening and closing the breaker.
The controller uses these outputs:
• To close the circuit breaker, the Close Gen Output is activated. You can configure a digital input as Breaker Close
Feedback and a Breaker Feedback timer. If the controller does not receive feedback before the Breaker feedback timer
expires, a Close Failure alarm is shown. If Breaker Close Feedback is not configured, then an alarm is not shown.
• To open the circuit breaker, the Open Gen Output is activated. You can configure a digital input as Breaker Open
Feedback and a Breaker Feedback timer. If the controller does not receive feedback before the Breaker feedback timer
expires, an Open Failure alarm is shown. If Breaker Open Feedback is not configured, then an alarm is not shown.
Timers > General
Parameter
Breaker feedback Timer
5.3.2

Breaker spring load timer

To avoid breaker close failures in situations where the breaker close command is given before the breaker spring has been
loaded, the spring load timer can be adjusted. You can do this with the Breaker Close Delay timer.
User manual 4189341341B EN
Range
0 to 8000 A
0 to 8000 A
100 to 4000 RPM
10 to 2000 kW
Range
1 to 10 s
Default Note
Check the minimum and maximum values the SGC
350 A can read and display. Remember to include the
CT.
Check the minimum and maximum values the SGC
800 A can read and display. Remember to include the
CT.
Check the minimum and maximum values the SGC
1800 RPM
can read and display.
Check the minimum and maximum values the SGC
200 kW can read and display. Remember to include the
PT.
Default
2 s
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