Combined load banks
Both resistive and inductive load are required for testing AC supplies at non unity power factors. Since most generating sets are rated at 0.8 power factor (or CosØ), testing at rated conditions is conveniently done with a combined load bank.
Various configurations are possible and larger load banks, typically above 1200kVA, are based on an ISO container construction.
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.
