scope:

Gives guidance on writing the technical specification for the procurement of static a.c. uninterruptible power supplies (UPS's) for use in electricity generating stations (power stations). Covers UPS's consisting of rectifiers, batteries, inverters, transfer switches and bypass switches. Indicates to potential purchasers how their specification should be prepared so that: - the equipment type and capacity interfaces correctly with other elements of the systems; - predicted performance is achieved; - ancillary equipment is properly sized; - reliability, availability and safety requirements are achieved; - proper consideration is given to the evaluation process and the quality measures to be applied.