Installation guide

EN | 57
D9124 | Operation & Installation Guide |
Bosch Security Systems | 11/03 | 39352E
Appendix A: Determining Battery Requirements
Appendix A: Determining Battery Requirements
A.1 Auxiliary Current and Standby Battery Requirements
A.1.1 12 VDC Device Calculations
Table 24: Determining Battery Requirements for 12 VDC Devices
AC Power ON AC Power OFF In Alarm
Model
Number
Quantity
Used
Normal Current
(each unit)
A
Total
Minimum Current
(each unit)
B
Total
Maximum Current
(each unit)
C
Total
All D9124
Devices
1
1 410 x 1 = 410 412 x 1 = 412 874 x 1 = 874
D125B 20 x Quantity 19 x Quantity 123 x Quantity
D129 25 x Quantity 25 x Quantity 26 x Quantity
D192C 20 x Quantity 20 x Quantity 55 x Quantity
D192G 35 x Quantity 35 x Quantity 100 x Quantity
D928 18 x Quantity 18 x Quantity 100 x Quantity
D1255 104 x Quantity 106 x Quantity 206 x Quantity
D1256 104 x Quantity 106 x Quantity 206 x Quantity
D1257 104 x Quantity 106 x Quantity 206 x Quantity
D8125 48 x Quantity 47 x Quantity 48 x Quantity
D8127 3 x Quantity 3 x Quantity 4 x Quantity
D8129 20 x Quantity 20 x Quantity
20 x Quantity + 25 x
the number of relays
D8130 5 x Quantity 5 x Quantity 54 x Quantity
D9131A 24 x Quantity 22 x Quantity 36 x Quantity
Ratings of other 12 V devices (bells, horns, strobes, smoke, and/or heat detectors) in the system not listed above.
x Quantity = x Quantity = x Quantity =
x Quantity = x Quantity = x Quantity =
x Quantity = x Quantity = x Quantity =
x Quantity = x Quantity = x Quantity =
A Total = B Total =
C Total
2
=
All currents are in millamperes (1 A = 1000 mA).
1
D9124 current draw includes one D9412GLTB Control Panel, one D1256 Fire Command Center, one D928 Dual Phone Line
Switcher, one D8125 POPEX Module, and two D192C or D192G Bell Circuit Supervision Modules.
2
If C Total exceeds 1900 mA, you can use a UL Listed external power supply to provide additional current. The devices requiring
the additional current must be connected directly to the additional power supply that shares common with the D9124.