Examples:
6191 Std at-
tempts
6192 Dbl at-
tempts
1st attempt 2nd attempt 3rd attempt 4th attempt 5th attempt
3 1 Standard Double Standard Alarm -
5 1 Standard Double Standard Double Standard
5 2 Standard Standard Double Double Standard
4 5 Standard Standard Standard Standard Alarm
6.2 Mains voltage unbalance detection
6.2.1 Mains voltage unbalance detection
The formula for mains voltage unbalance is: (Most deviating line-to-line voltage - average voltage)*100/aver-
age voltage (nominal value in %)
6.3 Phase sequence error
6.3.1 Description of phase sequence error
Prior to closing a breaker, the unit checks that the phase sequence is correct, depending on the chosen
phase direction in parameter 2154: "phase rotation". If it is incorrect (reversed), an alarm will be issued, and
the breaker in question will not be closed.
6.4 Breaker types and feedback
6.4.1 Breaker types
There are five possible selections for the setting of breaker type for both mains breaker and generator break-
er. The breaker type is selected in the application configuration.
Continuous NE and Continuous ND
This type of signal is most often used combined with a contactor. When using this type of signal, the AGC will
only use the close breaker(e.g. GB On) relays. The relay will be closed for closing of the contactor and will be
opened for opening of the contactor. Continuous NE is a normally energised signal, and continuous ND is a
normally deenergised signal.
Pulse
This type of signal is most often used combined with circuit breaker. With the setting pulse, the AGC will use
the close command(e.g. GB On) and the open command relay (e.g. GB Off). The close breaker relay will
close for a short time for closing of the circuit breaker. The open breaker relay will close for a short time for
opening of the breaker.
External/ATS no control (only applies to AGC 145/146 as mains breaker)
This type of signal is used to indicate the position of the breaker, but the breaker is not controlled by the AGC.
Compact
This type of signal will most often be used combined with a compact breaker, a direct controlled motor-driven
breaker. With the setting compact, the AGC will need to use both a close command(e.g. GB On) and a open
command relay(e.g. GB Off). The close breaker relay will close for a short time for the compact breaker to
AGC 100 Designer's Reference Handbook
4189340766 UK
Additional functions
DEIF A/S Page 51 of 152
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