Inductive load banks
Inductive (or inductive reactive) load banks are used in conjunction with resistive load banks for testing AC supplies at non unity power factors. Most generating sets are rated at 0.8 power factor (or CosØ), so to test at rated conditions requires both resistive and inductive load.
Inductive load banks can be customised for a particular application, or they can be combined into one unit with resistive load banks.
Reactive load inductors
Three phase inductors are used that also allow single-phase operation. Inductors are iron cored and continuously rated for both 50 & 60 Hz operation at the maximum voltages specified. Froment inductors can also cope with generators that produce harmonics. Thermal trips on the individual windings of each inductor provide an extremely reliable system.
Access and control
A comprehensive system of guards and interlocks ensures safe and reliable operation, and the Sigma control system provides easy-to-use manual or automatic test programs. Control is either from an intelligent hand terminal, or from a PC running the Sigma PC system software.
