PIP ELSAP04:2015 Download

The PIP ELSAP04:2015 standard outlines the requirements for a complete on-line, continuous duty, uninterruptible power supply system. The standard, in conjunction with the purchaser's data sheet (PIP ELSAP04D), defines the minimum criteria for the design, fabrication, inspection, testing, shipment, and documentation of the UPS system.

The standard covers two types of UPS systems: pulse width modulated (PWM) and ferroresonant. A PWM-type UPS system consists of a rectifier/charger, inverter, static bypass switch, manual bypass switches, transformers, and accessories. On the other hand, a ferroresonant-type UPS system includes a rectifier/charger, inverter, constant voltage or ferroresonant transformer, static bypass switch, manual bypass switches, transformers, and accessories.