AQD5 12v/24v Series Power Supply continued
AQD5 Series Instructions: Doc.#500-33005 Rev.A
Page 3 of 4
Maintenance
The power supply and stand by battery(s) should be tested at least once a year as follows:
1. Check LED’s for normal state. AC ON Green, Trouble Normal ON Green, DC ON Red.
2. Check output voltage with normal load. For 12v setting, voltage should read between 13.60 and 13.80vdc and
27.1 and 27.6vdc on the 24v setting. This assures proper voltage to float charge batteries.
3. Disconnect AC input. AC LED should be off, all other LED’s should remain normal.
4. Check DC Output to be above 12.0vdc for 12v setting and 24.0vdc for 24v setting. This checks standby
batteries to be operational. Sealed lead acid batteries have a typical life of 3 to 5 years.
5. Re Apply AC and verify AC LED ON.
Battery Selection
The table below shows typical standby time in hours for various loads and batteries. The table works for either 12vdc
or 24vdc. The AQD5 was evaluated at UL with a 7AH sealed lead acid battery with a 1 hour stand by.
Approximate Battery Standby Time Table with a reserve of 3 Amps for 5 minutes for Alarm
Total Output
Amps
4Ah Battery
Standby
7Ah Battery
Standby
12Ah Battery
Standby
24Ah
Standby
40Ah
Standby
.5A
5.5 Hrs
12 Hrs
20 Hrs
40 Hrs
65 Hrs
1A
2.5 Hrs
5 Hrs
9 Hrs
19 Hrs
32 Hrs
1.3A
2 Hrs
4 Hrs
7.2 Hrs
15.5 Hrs
24 Hrs
2A
1 Hrs
2 Hrs
5 Hrs
10 Hrs
15 Hrs
3A
.5 Hrs
1 Hrs
3 Hrs
6 Hrs
9.5 Hrs
4A
.5 Hrs
.8 Hrs
2 Hrs
4 Hrs
8 Hrs
5A
NA
.6 Hrs
1.4 Hrs
3 Hrs
7 Hrs
6A
NA
.4 Hrs
1 Hrs
2 Hrs
4 Hrs
The recharge table below gives approximate recharge times for different loads and battery sizes. The table is based on
batteries depleted to battery cut-off and recharged back to approximately 90% capacity.
