Ascotel IntelliGate 2025/2045/2065
870 Function check Part 6
•Event message:
On the system terminals configured for this, the event message "PBX Power
Supply: Battery" must be displayed after the predefined time.
• Current measurement:
Depending on the PBX type and level of expansion, the current in the battery
cable (current direction reversed relative to mains operation) is between 2 and
15 A.
• Mains failure bridging time:
The ratio of the battery capacity to the measured current gives an indication of
the expected bridging time in the event of mains failure. Example:
If the battery capacity is 20 Ah and the measured battery current is 5 A, the cal-
culated bridging time is theoretically 20 Ah / 5 A = 4 hours. In practice the
actual time is about 75% of this value, i.e. approx. 3 hours.
3.1.2 Testing the 48VDC module
Testing 230 V mains operation (if this operating mode is available)
The current in the DC power supply cable should be less than 0.1 A. This checks
that no power is drawn from the DC source when there is a mains power supply.
Test in DC operation
If no mains operation is provided, the following tests is irrelevant except for cur-
rent measurement.
•Function test:
The system must continue to function uninterrupted after disconnection from
the 230 V mains. This can be verified by establishing connection.
•Event message:
On the system terminals configured for this, the event message "PBX Power
Supply: Battery" must be displayed after the predefined time.
• Current measurement:
Depending on the PBX type and level of expansion, the current in the DC
power supply cable is between 0.5 and 4 A. If the PBX is the only power con-
sumer, the ratio of the battery capacity to the measured current gives an indi-
cation of the expected mains failure bridging time.
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