Securitron AQD6 - Manual (Page 3)

AQD6 12v/24v Series Power Supply continued
AQD6 Series Instructions: Doc.# 500-33520 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 12.0 and 13.0vdc and
24.5 and 25.5vdc 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 AQD6 was evaluated at UL with a 75Ah sealed lead acid battery.
Approximate Battery Standby Time Table with a reserve of 6 Amps for 5 minutes for Alarm
Total
Output
Amps
4Ah
Battery
Standby
7Ah
Battery
Standby
12Ah
Battery
Standby
24Ah
Battery
Standby
40Ah
Battery
Standby
75Ah
Battery
Standby
0.06 53 101 180 371 625 1180
0.125 25 48 86 178 300 566
0.25 13 24 43 89 150 283
0.50 6.4 12.1 21.6 44.5 74.9 142
1 3.2 6.0 10.8 22.2 37.5 71
2 1.6 3.0 5.4 11.1 18.7 35
3 1.1 2.0 3.6 7.4 12.5 24
4 0.8 1.5 2.7 5.6 9.4 18
5 0.6 1.2 2.2 4.4 7.5 14
6 0.5 1.0 1.8 3.7 6.2 12