Programmable AC Load supports advanced system testing

San Diego, January 23, 2008:  In addition to the broad range of AC and DC power sources, California Instruments offers a 3 kW advanced programmable AC load unit; the 3091LD.

This load can be paralleled to 12 kW total for single phase applications, and can also operate at 36kW in 3 phase mode. The AC load allows the user to simulate rapid changing load patterns, including resistive loads with unity power factor, as well as highly non-linear loads with current crest factors up to 4. Phase angle control permits the user to set a DPF (displacement power factor) from almost +1.000 to – 1.000. This is especially useful to test the stability of cogeneration units, verify proper operation of UPS and other power systems, etc.

The 3091LD can be operated from the front panel, or can be computer controlled, with support libraries for LabView and other test languages. The 3091LD can be used in power systems with frequencies from 45 – 440 Hz, and voltages up to 350 V-rms.