Elmdene 24V DC 1A PSU, EN54, Max. 2 x 7Ah Batteries

The STX2401-x is an EN54-4:1997 +A1 +A2 approved power supply ideal for use in Fire & Smoke and ventilation control Systems. Its regulated 27.6V dc output will supply up to 1.2 Amps continuous current into the load, in addition to providing up to 300mA for charging the standby battery capacities f 1.2Ah (STX2401-T) or 7Ah (STX2401-C). The power supply output features electronic short circuit protection under both mains and standby battery operation.

Key Features :

• Certified by UL to EN54-4:1997 +A1 +A2.
• Up to 1.2A current to load at 27.6V dc nominal regulated output.
• Charging capability to support 1.2 or 7Ah batteries.
• Electronic overload protection shuts down output until overload or short circuit is removed.
• Battery Monitor detects battery missing, low battery, short-circuit or reverse connection or circuit impedance (Ri) in excess of 500m?, caused by connector or wiring problem/corrosion, within 4 hours.
• Battery charging circuit is energised only when a battery is correctly connected and the battery voltage
• is greater than 14 V.
• No loss of output during automatic connection of battery to load on loss of mains.
• Deep discharge protection disconnects battery from load when battery voltage falls below 21 V.
• Diagnostic indicator LED (Orange) (Internal).
• Fault indicator LED (Yellow) flashes on detection of output fault, battery fault, charger fault and mains
• failure.
• Mains indicator LED (Green) showing mains present Indicators check at start-up.
• Optional RS232 serial interface for fault reporting and diagnostics