The method to ensure the reliable grounding of the closed jet fuse in the overhaul state

Abstract

The invention relates to a method for ensuring reliably grounding of an enclosed type jetting-type fuse protector under an overhauling state, which belongs to the field of a safety appliance. The method provided by the invention comprises: cutting off a single fuse carrier pipe body and keeping a partial pipe body connected with a load side; drawing out a copper wire at the tail end of the kept fuse carrier pipe body to be used as a grounding connection component of a grounding wire and the fuse protector; and performing short circuit on the copper wires of the three grounding connection components to form a group of three grounding connection assemblies with public grounding wires. When the enclosed type jetting-type fuse protector is required to perform grounding operation, the group of three grounding connection assemblies is sequentially and correspondingly inserted into a main body of a three-phase fuse protector, and the public grounding wires of the grounding connection assemblies are safely connected with a grounding body. In the invention, a new grounding method for the special structure of the enclosed type fuse protector is provided, which has strong pertinence, is easy to implement and facilitates simplifying on-site work processes and steps to improve the work efficiency under the precondition of ensuring operative safety and grounding effect.

Description

technical field [0001] The invention belongs to the field of safety appliances, and in particular relates to a method for reliably grounding an enclosed spray type power fuse. Background technique [0002] The maintenance status of power distribution equipment refers to a certain power distribution equipment exiting the operating state, and an obvious and visible disconnection point has been formed between the equipment and the power supply. If power is sent to the maintenance equipment, causing equipment or personnel hazards, the three-phase short circuit and effective grounding on the power outage side are called the power distribution equipment is in the maintenance state. [0003] The power company where the inventor works at the present stage uses the most high-voltage fuses and is the PRW-10 / 100-6.3 jet fuse. The fuse is composed of a base and an arc suppression device. There is a rotatable torsion spring at the lower end of the arc suppression tube. After the fuse el...

AI Technical Summary

Problems solved by technology

[0012] In the actual operation of the fuse tool, due to the limitations of the elevated vehicle and the surrounding environment, the operating rod with a length of about 3000mm can meet the requirements of the safety distance in the operation of most fuse tools, but the EC-10 insulation closed type with a length of 1200mm is used It is difficult to ensure the requirement of safe operating distance for the special operating rod for jet fuses

[0013] Therefore, in many workplaces, due to the limitation of operating space and safety distance, the on-site operators can only abandon the original operation mode of "people performing grounding operations in the elevated vehicle" and implement manual operation to carry out various corresponding operations. security operations

[0014] On the other hand, in the process of equipment maintenance, after the EC-10 type insulation-enclosed spray fuse is stopped, the grounding operation is performed. However, using the existing grounding rod, the grounding will inevitably bring a certain burden to the operator. At the same time, the length of the existing grounding rod is about 1800mm. When using this kind of grounding rod to carry out the operation and grounding of the EC-10 insulated and enclosed jet fuse, it is inevitable to re-adjust the working position of the climbing personnel again, which is more convenient for the on-site operators. Personal safety poses certain safety hazards

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