HAES 3A EN54 Power Supply (Takes 2 x 7Ah Batteries) (PSU-1002)

The HAES PSU-1002 is a 3A EN54-4 approved power supply and battery charger for fire alarm applications where mandatory EN54 part 4 approval is required. It provides a 28V supply with space for 2 x 7Ah standby batteries.

Typical uses include powering detection devices not supplied directly by the fire alarm panel, such as beam, aspirating and flame detectors, as well as sounder circuit controllers and expanders, repeater panels, remote communicators and other critical fire system loads. It is designed and manufactured in the UK.

Key features

• 3A EN54-4 approved power supply
• Dual supply outputs as standard
• Failsafe fault relay output (normally energised changeover contacts)
• Temperature compensated battery charging
• Houses 2 x 7Ah batteries
• Robust steel enclosure with front access door
• Supply healthy (green) and fault condition (yellow) LED indicators

Technical specifications

• Enclosure: steel, IP30, epoxy powder coated Interpon Radon, silver grey
• Dimensions (W x H x D): 311 x 240 x 76mm
• Mains supply: 47-63Hz, 1.2A @ 230V AC
• Mains supply fuse: 3A (T4A 250V), 100W unit, internal to the switch mode power unit
• Internal power supply rating: 3A total including battery charging; maximum load shared between outputs 2.5A
• Power supply output voltage: 19-29V DC
• Maximum ripple: 150mV p-p; supply and charger fault monitored
• Battery charging voltage: 27.3V DC nominal at 20°C, temperature compensated
• Battery charging current limit: 400mA or 700mA
• Max current drawn from batteries: 2.5A with mains disconnected
• Battery type: Yuasa NP7-12 (12V 7.0Ah), fire retardant
• Battery fuse: 5A (5 x 20mm glass, quick blow)
• Fault relay: changeover, unfused, max 3A at 30V DC
• Battery temperature sensor input: thermistor TTC5103, 10,000Ω at 25°C
• Terminal capacity: 0.5mm² to 2.5mm² solid or stranded
• Cabling: fire resistant screened cable, minimum 1mm², max length 1km (20Ω)
• Operating temperature: -5°C to +40°C, max 95% relative humidity