The 300 series range of Power Supply Units will provide 27.6Vdc at the nominated current.

Batteries are monitored continuously to ensure and communicate an adequate state of charge. A fault condition is given via the volt free contacts.

Note that batteries with a supply voltage greater than 18V are needed to activate the charging circuit. The units are factory adjusted to provide a 27.6Vdc output. When fitted, a lead acid rechargeable battery can be charged and then trickle charged to maintain optimum condition.

The mains present indicator is a green LED and the amber LED pulses in fault conditions. During mains failure the load will be supplied from the rechargeable battery; the battery must be connected correctly to prevent damage. An automatic disconnect circuit will operate if the battery voltage becomes too low.

Volt free relay contacts are available at the terminal bock. The relay changes state to indicate any of the following faults; mains failure, output fuse failure or load short circuit, battery low, missing or short-circuit.

The 300 series power supply is supplied within a sturdy metal enclosure with a hinged lid and have been designed for rapid installation.