Fluke - When the Lights Go Out, Will the Generator Come On?

Our thanks to Fluke for allowing us to reprint the following article.
By Jack Smith

During a utility power outage, what would happen if the emergency standby generator at a mission-critical facility failed to start? Mission-critical facilities include hospitals, data centers, military bases, and emergency response systems.


Most mission-critical facilities have an uninterruptible power supply (UPS) system that provides ride-through power to accommodate critical loads until the standby generator starts and stabilizes. When the generator is ready to accept loading, the automatic transfer switch (ATS) connects the generator to the facility's electrical infrastructure.


We take our utilities and power grid for granted-until that outage, which usually happens at the most inconvenient time. For many customers, such as typical residential users, resetting digital clocks on microwave ovens and alarm clocks can be annoying. But the stakes are much higher for hospital patients on life support and to surgeons in operating rooms. There must be power. Period...


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