No special permitting required The above graphs show the PQ VR responding to a three phase sag of 0.2 p.u.
Incoming voltage is shown in blue, the red line is the restored voltage.
The PQ VR 's primary advantage over other series connected devices is that the unit does not actually come between the utility grid and the load. PQ VR injects power into a series transformer, rebuilding the sag using stored energy from its superconducting magnet. The PQ VR cannot cause a plant shut down. Another advantage over other industrial power quality systems is the reliability of the PQ VR 's energy storage system. Our experienced team of application engineers will assist you in designing the lowest cost system to meet your needs.