B520 Power Supply - Bosch D9412GV4 Installation And System Reference Manual

D9412GV4/D7412GV4 v2.03 | Installation and System Reference Guide | 16.0 Specifications
.

16.2 B520 Power Supply

Table 32: B520 Specifications
Voltage Input Primary:
(Power
Secondary:
Supply)
Current Refer to the B520 Auxiliary Power Supply Module Battery Standby Chart section in the B520 Auxiliary Power
Supply Module Installation and Operation Guide (P/N: F01U265445) for the current draw requirements of
Requirements
other system components.
Power
All external connections are power-limited except battery terminals.
*
Outputs
Continuous
Power
Outputs
Fire and
Fire/Burglary
Systems
*For UL 864 applications, refer to the Compatible Accessories section for compatible devices.
Minimum 10.2 VDC
Operating
Voltage
SDI2 Bus SDI2 Bus A:
SDI2 Bus B:
Battery Discharge
Cycle
Discharge/
Recharge
Schedule
Recharge
Cycle
Temperature:
Environmental
Relative
Humidity:
Compatible D8103 Universal Enclosure, D8004 Transformer Enclosure, B10 Medium Control Panel Enclosure, D2203
Standard Enclosure, BATB-40 Enclosure, BATB-80 Enclosure, AE1 and AE2 Enclosures.
Enclosures
Bosch Security Systems, Inc. | 7/16 | F01U265457-09
18 VAC 18.0 VAC 50 VA class 2 plug-in transformer (TR1850)
Batt 1, Batt 2 The B520 Auxiliary Power Supply Module supports the connection of two
terminals independently monitored sealed lead-acid rechargeable batteries (12.0
VDC, 7 Ah through 12.0 VDC, 36 Ah).
SDI2 Out, 2.0 A maximum at 12.0 VDC nominal (continuous supply) total for all
AUX PWR devices and outputs supplied.
terminals
To comply with UL 985 and 864 listing standards for fire alarm systems, the total
combined continuous and alarm current draw for the system during alarm conditions must
be limited to 2.0A provided by the primary power supply (rectified AC). If current draw for
the system exceeds 2.0 A, remove connected devices until the current draw falls below 2.0
A. Then, connect the removed devices to an additional B520 Auxiliary Power Supply
Module or to an external power supply.
8 VDC – 2000 ft (610 m) maximum
8 VDC – 2000 ft (610 m) maximum
13.2 VDC Charging float level.
12.0 VDC Low Battery and AC Fail Reports if programmed. Low Battery LED on.
10.2 VDC Minimum operational voltage
9.8 VDC Battery load shed (operation continue if AC is present).
AC ON Load shed relay resets, battery charging begins, Battery Trouble and AC
Restoral Reports sent.
12.6 VDC Battery Restoral Report sent, Low Battery LED off.
+32°F to +120°F (0°C to +49°C)
Maximum 93% non-condensing
85