Deif AGC-4 Mk II Designers Handbook

Relay
Relay selected
Two relays used
Relay not selected
One relay used
Not used
Synchronising:
The breaker ON relay and the sync. relay activate at the same time
when synchronising is OK.
Blackout closing:
The breaker ON relay and the sync. relay activate at the same time
when the voltage and frequency are OK.
Synchronising:
The breaker ON relay activates when
synchronising is OK.
Blackout closing:
The breaker ON relay activates when the
voltage and frequency are OK.
DEFAULT selection
Low
Synchronising:
Not possible.
Blackout closing:
The breaker ON relay and the sync. relay activate at the same time
when the voltage and frequency are OK.
Synchronising:
Not possible.
Blackout closing:
The breaker ON relay activates when the
voltage and frequency are OK.
High
Synchronising:
The relays will activate in two steps when the synchronising is
selected:
1. Breaker ON relay activates.
2. When synchronised the sync. relay activates.
See note below!
Blackout closing:
The breaker ON relay and the sync. relay activate at the same time
when the voltage and frequency are OK.
Synchronising:
Not possible.
Blackout closing:
The breaker ON relay activates when the
voltage and frequency are OK.
WARNING
When two relays are used together with the separate sync. input, then please notice that the breaker ON relay will be
activated as soon as the GB ON/synchronising sequence is activated. Care must be taken that the GB ON relay cannot
close the breaker, before the sync. signal is issued by the sync. relay.
INFO
The selected relay for this function must have the "limit" function. This is adjusted in the I/O setup.
5.6 Inhibit conditions before synchronising mains breaker
This function is used to inhibit the synchronising of the mains breaker after blackout. After blackout, the timer in menu 2291 ("Delay
activate recovery 2") will start to run, and if the mains voltage and frequency are inside the limits (2281/2282/2283/2284) before the
timer runs out, the short interruption timer (menu 2292 "Recovery del. 1") will be started. When the timer has run out, the
synchronising of the MB will start.
DESIGNER'S HANDBOOK 4189341275A EN Page 97 of 196

Deif AGC-4 Mk II Specifications

General

Brand	Deif
Model	AGC-4 Mk II
Category	Controller
Language	English