Rotary Range

The Ferranti Rotary Type Tapchanger (tap changer) employs the continuous rated bridging reactor method of operation, in which duplicate tapping selector switches and series switches are used in conjunction with continuous rated reactors. The tapping selecter and series switches are each mounted in their own separate oil filled and isolated compartment on the side or on the end of the main transformer tank. The selector switch compartment is separated from the main tank by an oil-tight insulated panel which carries terminals for the tapping connections. The series switches are also housed in a separate compartment with a drop down tank which can be lowered for inspection by means of hand-operated winding gear. read more....

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