74149180
Mar 15, 1991
Nov 23, 1993
reactors namely current limiting reactors, filter reactors, shunt reactors, VAR reactors (VAR meaning a thyristor controlled shunt compensating reactor), capacitor switching reactors, high voltage series reactors, smoothing reactors, neutral grounding reactors, commutation reactors, reactor enclosures, line traps, arc suppresion coils, transient suppresion coils, current transformers, capacitive voltage transformers, coupling capacitors, line tuners, and capacitor protection relay
Electrical and Scientific Apparatus