Specifications

Total A = ______ Total B = ______ Total C = ______
1
The In Alarm calculation for the B308 is: 20 x Qty + (16.25 x number of relays).
2
Currents listed are for the B450 only. Include plug-in device currents in calculations.
3
If using the proximity reader, add 100 mA to columns A, B, and C before calculating.
4
38 mA for each active relay.
5
Value = Minutes of alarm operation/60
Table 18.1: Current rating chart for standby battery calculations
Total B
1
Hours Total C
1
Alarm Operation
2
Contingency Total Ah
3
( ________ x 24 ) + ( ________ x 0.083) + 15% = _________
1
Refer to previous table.
2
Value = Minutes of alarm operation/60
3
Total Ah requirements must not exceed the Ah capacity of batteries:
–
One D126 Battery = 7 Ah
– Two D126 Batteries = 14 Ah
– One D1218 Battery = 18 Ah
Table 18.2: General ampere-hour (Ah) calculation formula
Application Minimum Required
Standby Time (hr)
Minimum Alarm Time (min)
Residential Burglary 4 4
Proprietary Burglary 4 N/A
Central Station (Bank) 72 N/A
Central Station (Mercantile) 4 N/A
Police Station Connected (Bank) 72 30 (CUL)/15 (UL)
Police Station Connected (Mercantile) 24 30 (CUL)/15 (UL)
Local Burglary (Bank) 72 30 (CUL)/15 (UL)
Local Burglary (Mercantile) 24 30 (CUL)/15 (UL)
Holdup 8 N/A
Residential Fire 24 5 (CUL)/4 (UL)
Table 18.3: Minimum standby and alarm times
Type Required capacity Calculations
Household Burglary and
Commercial Burglary
4 h
Bank Safe and Vault 72 h (UL 365). Auxiliary power current for all devices, including
keypads, must be limited to 80 mA or less to meet this
requirement.
Table 18.4: Standby battery requirements
100 en | Approved applications Control Panel
2014.05 | 11 | F.01U.287.180 Installation and System Reference Guide Bosch Security Systems, Inc.