Diesel UPS 1000kVA+ : system schematics

SINGLE MODULE - DUAL OUTPUT

Single module Rotabloc Diesel UPS system with both 'critical' and 'essential' output capability. The Rotabloc element is sized for the critical load and will provide conditioned power under all conditions. During Mains failure periods the Rotabloc provides the ride-through required to allow the diesel element to start, then take up load. Some seconds later the essential loads are connected via a secondary circuit breaker.

MULTI-MODULE DUAL OUTPUT

Any two Rotabloc elements are sized to supply the critical load and provide conditioned power in all eventualities. During Mains failure periods the Rotabloc element provides the ride-through required to supply the critical loads and allow the diesel element to start.

Any two diesels are sized to provide both 'critical' and 'essential' loads. During Mains failure periods the diesels first provides the critical power via the Rotabloc system then, some seconds later the essential loads are connected via secondary circuit breakers.