Overview
This series of power supply units is designed for use with compliant fire alarm systems that require additional power for auxiliary equipment. The range provides a regulated 27.6VDC output and is available in 1A, 2A, and 5A versions, with two enclosure sizes to support different battery capacity requirements.
In the event of a mains supply failure, the PSU automatically switches to battery operation, ensuring a continuous and uninterrupted power supply. The units are housed in robust metal enclosures with space for two batteries. Maintenance-free sealed lead-acid batteries are used to provide standby backup during mains power loss.
Features
- Compliant with EN54-4:1997 +A1 +A2
- 27.6VDC uninterrupted power supply for compliant fire alarm systems
- 1A, 2A, and 5A models available in compact metal enclosures for 7Ah batteries
- 2A and 5A models available in larger metal enclosures for 18Ah batteries
- Green LED indication for mains power status (see Fault Outputs & Diagnostics table)
- Yellow LED indication for fault conditions (see Fault Outputs & Diagnostics table)
- Amber LED indication for engineer diagnostics (see Fault Outputs & Diagnostics table)
- GEN and EPS outputs for fault monitoring and reporting (see Fault Outputs & Diagnostics table)
- Integrated overload and short-circuit protection to safeguard the PCB
- Battery charging current between 500mA and 800mA depending on the model (see Specification Chart)
- Deep discharge protection disconnects batteries below 21VDC to prevent battery damage
- Battery monitoring for low voltage, incorrect connection, and short-circuit conditions