A facility that is down for even 5 min can suffer a significant loss of productivity or data that may…

A more sophisticated power-control system is shown in Figure 1, where a dual feeder supply is coupled with a motor-generator…

Engine-generator sets are available for power levels ranging from less than 1 kVA to several thousand kVA or more. Machines…

Generators for standby power applications can be induction or synchronous machines. Most engine-generator systems in use today are of the…

An uninterruptible power system is an elegant solution to power outage concerns. The output of the UPS inverter can be…

Noise produced by backup power systems can be a serious problem if not addressed properly. Standby generators, motor-generator sets, and…

The lead-acid battery is a commonly used chemistry. The flooded version is found in automobiles and large UPS battery banks.…

Out of sight, out of mind does not or, at least, should not apply to a facility ground system. Grounding is…

All too often, ac power switchgear is installed at a facility and forgotten until a problem occurs. A careless approach…

Maintenance of the facility electrical system is a key part of any serious energy-management effort. Perform the following steps on…