AGC Designer’s Reference Handbook
DEIF A/S Page 92 of 168
Battery test
This function gives the possibility to test the condition of the battery. The battery test initiates
with a digital input and is available when the gen-set is in semi-auto mode.
If a mains failure occurs during the battery test sequence, the test will automatically be
interrupted, and the automatic mains failure start up sequence will be activated.
During the test the battery voltage will decrease, and an alarm will occur if it drops to the
setpoint.
The drawing shows that test #1 is carried out without a large voltage drop of the battery voltage,
whereas test #2 reaches the alarm setpoint.
As there is no reason to wear the battery down even more, the test stops when the battery test
alarm occurs.
The test is typically used at periodical intervals, e.g. once every week. The engine must be at a
standstill when the test is started. Otherwise, the test command will be ignored.
The stop relay will act depending on the coil type selection in
6210 Stop
:
Stop coil:
The stop relay activates during the test.
Run coil:
The stop relay stays deactivated during the test.
t
BAT TEST
t
BAT TEST
Cancel test
U
BATTER
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