Horizontal Vacuum On Load Tap Changer for transformer

Stepper motor is adopted to drive the eccentric block and lead screw on the spindle to rotate at the same time. According to the principle of progressive preselection of gear position under no load condition, the energy storage spring of gun mechanism is compressed. When the preselection is completed, the energy storage spring is compressed to the limit position, the spring is released, and the vacuum switch tube is turned on and off through the transmission mechanism to achieve the purpose of arc extinguishing and gear conversion.

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