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7.
Test & Adjustment Procedure
This Procedure outlines the steps to functionally test the IMP/IMD-425AP~2000AP models. The
functional test is broken down into several sections to test each different function of the UPS.
7.1 Charger Voltage Test
* Plug the UPS into an AC power source and turn the UPS on.
* Disconnect positive (red) battery wire.
* Using a multi-meter, verify the B+ to B- voltage is at 13.4V~14.0V(IMP/IMD-425~1000AP) or
26.8V~27.8V(IMP/IMD-1025~2000AP). If not, adjust VR1.
7.2 Over Load Test
* Set the AC power source to the rating voltage.
* Plug the UPS into an AC power source and turn the UPS on.
* Connect a true RMS power meter to the output of the UPS.
* Connect the SPS load to the output.
* Add the SPS load slowly till the UPS over load alarm.
* Use the following chart to verify' the power handling capabilities of the UPS.
Load
Product Name
Overload Alarm
(AC Mode)
IMP/IMD-425AP
425VA~510VA
IMP/IMD-525AP
525VA~630VA
IMP/IMD-625AP
625VA~750VA
IMP/IMD-825AP
825VA~990VA
IMP/IMD-1000AP
1000VA~1200VA
IMP/IMD-1025AP
1025VA~1230VA
IMP/IMD-1200AP
1200VA~1440VA
IMP/IMD-1500AP
1500VA~1800VA
SPS
IMP/IMD-2000AP
2000VA~2400VA
