In order to measure the load or current of a fire alarm circuit we must place the multi meter test leads in series with the circuit to be read.
Fire alarm panel battery load test.
The equipment load test is done by removing the ac panel power and placing a dvm across the connected battery using the existing alarm system as a load.
A connected 12v battery should read around 13 5v before ac is removed.
Load test the battery based on the manufacturer s specifications for a discharge rate of 3 hours or more by applying the current indicated for the selected hourly discharge rate continuously until the terminal voltage decreases to the end voltage specified by the manufacturer.
Record the alarm current reading on your test report.
Silence the alarm and trouble signals.
Also note that you will need to move the positive test lead to the amp test lead port as shown in the pictures below.
Initiate an alarm on the fire alarm system by triggering a device or zone.
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Replace the battery or conduct a load test of the battery.
Restore power to the heat trace controllers.
This is very important as it is impossible to do otherwise.
Using a well designed accurate and reliable battery tester makes all the difference in knowing exactly how well the battery and your fire alarm system is working.
Battery test analyze 6 12 volt fire alarm batteries sla vrla gel agm batteries 3 ahr to 140 ahr.
Record the reading on your test report.
Nfpa 72 electronic fire alarm control panel battery load test simplexgrinnell philadelphia duration.
In testing the charge of a battery the battery must be fully charged and then tested with a voltmeter.
Turn off the max min setting on your meter.