Bus fixed contact grounding device for KYN28 type switch cabinet

Abstract

The invention belongs to the field of electrical equipment auxiliary tools and particularly relates to a bus fixed contact grounding device for a KYN28 type switch cabinet. The bus fixed contact grounding device comprises an insulating operation rod, an insulating operation rod sleeve, a metal base, an ejector rod, three metal claw pieces, a lead and stringing devices. The head of a cylindrical operation rod is provided with a lead screw. Through holes are formed in the base from top to bottom, and the inner wall is provided with threads. The upper portion of the base is provided with three claw bases. The lead screw is matched with the threads in the base. The operation rod sleeve is installed outside the operation rod in a sleeved mode. The top of the operation rod sleeve is connected with an outer wall of the base. The bottom of the operation rod extends out of the bottom of the operation rod sleeve. The claw bases are movably connected with the claw pieces. The inner walls of the claw pieces are provided with the stringing devices and used for pulling the claw pieces to the axis of the base. The uppermost end of the lead screw protrudes out of the upper top face of the base. The top end of the lead screw is provided with the ejector rod. The head of the ejector rod makes contact with the claw pieces to eject the claw pieces open. The base is provided with the lead. The device is stable in clamping, large in area making contact with a fixed contact, and fast and safe to assemble and disassemble.

Description

technical field [0001] The invention belongs to the field of auxiliary tools for electric equipment, and in particular relates to a grounding device for a static contact of a bus applied to a KYN28 switch cabinet. Background technique [0002] The KNY28 switchgear is a high-voltage switchgear, which is widely used in the power system. Electric workers must regularly perform power-off maintenance for the switchgear. During the equipment power-off maintenance, in order to ensure the personal safety of the maintenance personnel, commonly used grounding devices As a security measure, perform the following operations: [0003] 1. Use a 10kV electroscope to verify that the equipment is out of power; [0004] 2. Connect the grounding terminal of the grounding device to the grounding body to ensure its firmness and reliability; [0005] 3. The operator clamps (clamps) the grounding wire to the conductor of the power-off equipment through the insulating operating rod and ensures th...

AI Technical Summary

Problems solved by technology

[0007] Commonly used grounding clamps are divided into crimping type and hooking type. When these types of grounding clamps clamp the conductor, the clamp can only be clamped firmly when it is perpendicular to the conductor, and cannot easily enter the static contact insulation box, even if it can Entering the static contact insulation box, the wire clip is only placed in the static contact insulation box, and it has a certain contact area with the bus static contact, which is difficult to clamp, easy to slip, and the ground wire is caused by pressing the static contact. If the clamp falls off, the safety of the busbar power failure cannot be guaranteed, and there is a personal safety hazard for the personnel working on the power failure equipment, and when there is a ground current, due to poor contact and small contact surface, the temperature at the installation point of the ground device will rise sharply High, causing serious damage to equipment

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