Owner's manual

Features
Product Description
CHG-75 PN 51315:A 08/01/01 7
SECTION 1
Product Description
The CHG-75 battery charger is designed to charge lead-acid batteries that provide
emergency standby power for an FACP (Fire Alarm Control Panel) and related
equipment. Two 12 volt batteries are used in series to supply a nominal 24VDC. The
battery charger is compatible with any FACP that uses lead-acid batteries with a rating
of 25 AH (Amp Hours) to 75 AH. The FACP must have a feature that allows the
disabling of the control panel battery charger.
The CHG-75 can be configured for 120 VAC operation or 220/240 VAC operation via
jumper selection.
1.1 Features
• 120 VAC or 220/240 VAC operation via JP1 jumper selection
• Charger capacity of 25 AH to 75 AH
• Mounts in a BB-26, BB-55F, MS-9600 and MS-9200 enclosure
• Screw terminal connection for battery
• F2, 15 amp replaceable fuse provides battery current-limiting, short circuit and
overload protection
• Screw terminal connection for battery backup to other equipment
• F3, 15 amp replaceable fuse provides current-limiting and overload protection
for output to connected equipment
• Fail-safe Form-C trouble relay rated for 2 amps @ 30 VDC (resistive)
• Ground fault detection circuit which can be disabled by cutting jumper JP2
• Battery and charger voltage supervision
• AC voltage supervision
• AC loss reporting delay option, jumper selectable for 8 or 16 hour delay
• Connectors for trouble input and trouble output which direct CHG-75 troubles to
FACP and allows daisy-chaining of external troubles through the charger without
affecting charger operation
• Master trouble input allows monitoring of another device or zone
• Connectors for optional AM-1 ammeter and VM-1 voltmeter
• LEDs for monitoring charger condition
• Screw terminal connection for SLC loop
• Direct SLC interface for charger trouble and/or AC loss reporting to the FACP