Patent ID: 6631075
Filing Date: 2003-10-07
Classification: H02B

Abstract:
A switchgear installed in a main circuit from a power generator to a transformer and structured in a phase-separation configuration, comprising:three containers arranged together; a circuit breaker having a breaker part disconnecting said main circuit electrically and insulated by an insulating gas, said breaker part arranged in each of said three containers, and a manipulator for making contact to and leaving from a contact maker of said breaker part; a plurality of instrumentation transformers for measuring a voltage of said main circuit; a switching part of a disconnecting switch and an earthing switch connected electrically to said main circuit and arranged in each of said three containers; an arrester; said plurality of instrumentation transformers being installed in a container located in a midst among said three containers; an instrumentation transformer measuring a circuit voltage operating the switching part of said disconnecting switch on a side of said switching part of said disconnecting switch, and an arrester restricting an excessive voltage propagating to the circuit being provided in parallel along an alignment direction of said three containers; and said instrumentation transformer and said arrester being supported in a manner suspended from a ceiling plate provided in an upper portion of said container.