Securitron AQD5 User Manual

Page 3

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

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

1 Hrs

2 Hrs

5 Hrs

10 Hrs

15 Hrs

.5 Hrs

1 Hrs

3 Hrs

6 Hrs

9.5 Hrs

.5 Hrs

.8 Hrs

2 Hrs

4 Hrs

8 Hrs

.6 Hrs

1.4 Hrs

3 Hrs

7 Hrs

.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.