Power supplies ensure continuous operation with battery charging and back-up

The PSF series ac/dc power supplies target applications that demand 100% uptime. Available in 75 W, 100 W and 155 W configurations, they are designed with built-in battery charging and back-up functionality. Under normal operating conditions, the units are able to charge the stand-by battery and also supply direct power to the load. In the event of ac-electrical power failure, the supplies automatically switch to dc-power from the battery source.

The power supplies accommodate a universal input voltage of 90 to 264 Vac and is available in dual output version features of 13.8 V and 27.6 V. One output powers the load, and the other charges the battery. The triple output models include an additional 5-V, 3-A regulated output.  The supply series provides built-in protections for brownout, battery low cut-off, and battery polarity by resettable fuse. These features are in addition to over-load, output over-voltage, constant current limit, and short circuit protections.