Critical Electric Load Study

 

Businesses and institutions depend on emergency power systems (EPS) to provide backup in the event of power failure. Without EPS, outages can jeopardize patient care in hospitals, disrupt research in universities, and impact day to day operations for commercial businesses. Having an EPS, however, is not enough. It is essential for businesses and institutions to know what their critical loads are and that system designed to support those loads is sufficient. 

 

Case Study: Large Public Hospital

A large public hospital was about to add a new chiller to an existing EPS. The engineers were confident that the generating capacity available was adequate, but were looking to understand the existing unmetered loads on the EPS. FAI installed meters at the normal feeds for the Automatic Transfer Switches that fed these unmetered loads, recorded loads and collected data at 15 minute intervals for each phase (average kW, average kVA, average Volts, and average Amps). This information confirmed that the EPS had the capacity to power the new chiller during emergencies.

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