Regulating system employing an RMS composite controller

Regulator circuit

Retrofittable energy saving device

Sag generator with switch-mode impedance

Saturable reactor apparatus for automatic control of power facto

Secondary arc extinction device

Series capacitor equipment

Series compensator

Single conversion power factor correction using septic converter

Single or isolated operation detecting apparatus for a distribut

Single-phase active power filter for multiple nonlinear loads an

Soft-start circuit for power converters

Soft-switching three-phase power factor correction converter

Static and dynamic mains voltage support by a static power facto

Static reactive compensator

Static reactive power compensating equipment

Static reactive power compensator

Static reactive-power compensation apparatus

Static var compensator apparatus

Static var compensator with thyristor control