Analysis Of The Structural Composition Of High-voltage Disconnect Switches

The hv isolator switch device consists of three single-pole units, each switching one phase of the circuit. These three single poles are integrated to form a complete three-phase disconnecting device. The three-phase disconnecting switch uses independent support insulators to support the conductive components, and the three single poles are connected into a single assembly via mechanical linkages, ensuring synchronized operation of the three phases.

The single-stage high voltage electrical isolator body includes components such as static contacts, moving contacts, post insulators, and operating mechanisms. The static contact is fixed to the insulated support, while the moving contact is driven by the operating mechanism, rotating or swinging between open and closed states to connect and disconnect. The three single poles are arranged in phase sequence to form a isolator high voltage unit that is adapted to a three-phase AC system.