GAS-INSULATED METAL ENCLOSED NEUTRAL POINT COMPLETE-SET DEVICE

The present invention relates to a complete set of gas-insulated and metal-enclosed neutral point device. In the complete set of device, the arrester and the isolating switch are both closed structures arranged vertically; one of the arrester and the isolating switch is provided with a wire inlet cylinder at the top, the other is provided with an adaptive cylinder; an intermediate cylinder is provided between the wire inlet cylinder and the adaptive cylinder, and an intermediate conductor is provided in the intermediate cylinder; an adaptive conductor is provided in the adaptive cylinder; the intermediate conductor is connected to the arrester under the adaptive cylinder or to a top conductive terminal on the isolation switch through the adaptive conductor; the neutral point connection side of the discharge gap is fixed on a top of the wire inlet cylinder, the ground side of the discharge gap is electrically connected to the adaptive cylinder or is provided with a ground connection end, and a branch conductive structure is provided in the wire inlet cylinder. The above solution solves the problems that the existing complete set of closed neutral point equipment needs to be equipped with more gas chambers and thus the structure is relatively complicated and the cost is high.