Off excitation tap changer 400A 10KV 7 tap 

Henan New Electric Power Co., Ltd deals in the R&D, manufacturing and sales of various medium, high and low voltage transformer and transformer accessories. The transformer accessories mainly include Buchholz relay, tap changer, oil level gauge, butterfly valve, moisture absorber, pressure reducing valve, cross flow cooling fan, bimetal thermometer, epoxy resin insulator, etc. The structure of off circuit tap changer consists of drum, cage, strip, disc and wedge. 1. The drum structure off circuit tap changer is usually a single-phase structure switch. The static contact column is cylindrical, and the moving contact is circular. A disk spring is installed in the circular moving contact. When the switch is changed, the moving contact is allowed to have displacement relative to the central axis. The contact pressure is determined by the displacement of the moving contact relative to the central axis. After the exchange, the moving contact is in a stable position. Drum…

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