Electronic AC load California Instruments

The 3091LD is designed to provide precisely controlled non-linear loads for testing AC power generation equipment such as UPS’s, AC sources, electrical switches and circuit breakers. The ability to simulate high crest factor and variable power factor AC load conditions provides an effective method of testing these and other AC products against real-world conditions and can significantly increase product reliability.

Traditionally, many of these products are tested using resistive load banks. This approach does not simulate real-world conditions such as switching AC inputs found in many AC powered products. This type of conventional testing does not fully exercise the equipment under test (EUT) against worst case operating conditions. High peak currents and low power factor loads can significantly impact the operating characteristics of a UPS or AC power product. Unless properly exercised, product defects may go undetected until a unit is used at a customer site, resulting in costly field returns.

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