Honeywell Fire-Lite CHG-75 Battery Charger

Honeywell Fire-Lite CHG-75 Battery Charger

General

The CHG-75 battery charger is designed to charge leadacid batteries that provide emergency standby power for a Fire Alarm Control Panel (FACP) and related equipment. Two 12-volt batteries are used in series to supply a nominal 24 VDC.The battery charger is compatible with any FACP that uses lead-acid batteries with a rating of 25 AH (amp-hours) to 75AH. The FACP must have a feature that allows the disabling of the control panel battery charger.

Construction and Operation 

The CHG-75 consists of a PC board and mounting chassis. See Installation section for compatible backboxes. Charging current is provided automatically when the battery voltage falls below the charger's output voltage. While charging the batteries, the CHGING (charging) LED will turn on. When batteries are fully charged, the charger maintains a float charge of 27.6 VDC. The SLC LED and AC LED are the only other LEDs that should be on during normal operation if SLC communication is programmed at the FACP and the SLC enable switch is On.

Features 

• 120 VAC or 220/240 VAC operation. 

• Rated for batteries 25 to 75 AH. 

• Charger can connect to the Signaling Line Circuit (SLC) of a Fire

•Lite addressable intelligent control panel for trouble monitoring. 

• Mounts in a BB-26 or BB-55F enclosure. 

• Screw terminal connections for battery, battery backup to other equipment and SLC loop. 

• 6.25 A fuse (F1) for AC overload protection. 

• 15.0 A replaceable fuse (F2) provides battery with currentlimiting, short circuit, and overload protection. 

• 15.0 A replaceable fuse (F3) provides battery with currentlimiting and overload protection for output to connected equipment. 

• Form-C trouble relay rated for 2.0 A @ 30 VDC (resistive). 

• Ground fault detection circuit (can be disabled). 

• Battery, charger, and AC voltage supervision. 

• AC loss reporting delay option for 8- or 16-hour delay. 

• Connectors for trouble input and output — direct CHG-75 troubles to FACP and allow daisy-chaining of external troubles through the charger without affecting charger operation. 

• Master trouble input allows monitoring of another device or zone. 

• Diagnostic LEDs for monitoring: Primary AC On, Charger. 

• Trouble, Ground Fault, Charging, SLC Communication, 

• Low Batter

Electrical Specifications 

• Primary AC power in (TB1): 120 VAC, 60 Hz, 2.0 A; or 220/240 VAC, 50 Hz, 1.0 A. Wire size: minimum 14 AWG (2.0 mm²) with 600-volt insulation. 

• Form-C relay (TB4): 2.0 A at 30 VDC (resistive). 

• Float charge voltage: 27.6 VDC. 

• Maximum charging current: 4.5 A (peak). 

• Battery sizes: 25 AH to 75 AH

Compliance with Codes and Standards 

The CHG-75 complies with the following standards: 

• NFPA 72 National Fire Alarm Code. 

• UL 864 Standard for Control Units for Fire Alarm Systems. 

• UL 1481 Power Supplies for Fire Alarm Systems.

Agency Listings and Approvals 

The listings and approvals below apply to the basic CHG-75. In some cases, certain modules may not be listed by certain approval agencies, or listing may be in process. Consult factory for latest listing status. 

• UL: S1287. 

• CSFM: 7315-0075:0201. 

• MEA: 297-01-E