Planning
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Mounting and Installation, Technical Description, T 811 065 en
5.5
Battery current measurement with a connected battery pair
After the system has been successfully commissioned, it is necessary to perform a battery current measurement (mains fault
under full load, dropped holding magnet, display lighting off, service PC cable disconnected from the SCP) in order to guaran-
tee that the battery capacity meets the requirements.
If the results of the battery current measurement (example with a 7.2 Ah battery pair) are not in line with the power require-
ment calculation (±5%), notify your Securiton Support point immediately.
Observe the following procedure precisely:
• During normal operation, interrupt the battery cable at an appropriate point and loop the measuring instrument (multimeter,
voltmeter) in the battery cable. There must be no pending alarms or disablements; the batteries must be connected and
charged.
• Switch on measuring instrument and set to “direct current line”. The expected measurement value is approx. 60–500 mA
DC.
• Interrupt the mains voltage during normal operation.
• Mains fault is displayed (after a delay time): The batteries now supply power to the SCP without exception.
• Read the measurement value on the measuring instrument and note (= quiescent current).
• Trigger armed alarm for all (if possible) activated fire incident controls supplied by the SCP.
• Read the measurement value (= alarm current) on the measuring instrument and note.
Bayonet fuses
BATTERY
12V - 7Ah
8A
BATTERY
12V - 7Ah
Bat
- +
N L PE
B7-CPB11
0,325
V
A
DC
AC
~
V
A 10mA
Ω
AC
~
V
A
DC
Fig. 38 Battery current measurement
