CN205693210U - For spark gap charged for replacement leakage current table special complete instrument - Google Patents

Abstract

A complete set of special tools for replacing the leakage current meter of the lightning arrester, including a tool box. The tool box includes an upper cover and a box body. Both the upper cover and the box body are made of insulating materials. There are screw holes on the upper cover and the box body. The positions of the screw holes and the screw holes on the box body correspond to each other. There is an insulating post connected between the screw hole on the upper cover and the screw hole on the box body. The insulating post is a porcelain insulator or a composite insulator. Screws are provided at both ends of the insulating post; The utility model tool ensures that the replacement of the leakage current meter of the arrester can be carried out in a live state, avoiding the need for power failure; the special tools are placed in a set, the wiring is simple and reliable, easy to carry and install, saves time and effort, and can greatly improve work efficiency; The combined insulation bracket better guarantees the safety of personnel during operation.

Description

A special set of tools for replacing the leakage current meter of the lightning arrester

technical field

The utility model relates to a maintenance device for replacing a leakage current meter with electricity on a lightning arrester.

Background technique

Surge arrester is one of the important protection devices to ensure the safe operation of the power system. It is mainly used to limit the overvoltage of the system. The leakage current is a very important reference index for evaluating the quality of the arrester. If the leakage current meter fails, it may cause leakage current error. Therefore, it is very important to keep the leakage current meter of the arrester in good condition at all times. At present, most operation and maintenance personnel replace the leakage current meter by first applying for a power outage through dispatching, and then complete the replacement of the faulty leakage current meter when the equipment is not charged. The maintenance cycle is long and the reliability of the system power supply is reduced.

Utility model content

The purpose of this utility model is to provide a special set of tools for replacing the leakage current meter of the lightning arrester when the arrester is live, which can realize the replacement of the leakage current meter of the lightning arrester failure under live conditions, avoiding application for dispatching power outages, saving time, and improving the reliability of the system power supply.

The technical scheme of the utility model is:

A complete set of special tools for replacing the leakage current meter of the lightning arrester, including a tool box. The tool box includes an upper cover and a box body. Both the upper cover and the box body are made of insulating materials. There are screw holes on the upper cover and the box body. The positions of the screw holes and the screw holes on the box body correspond to each other. There is an insulating post connected between the screw hole on the upper cover and the screw hole on the box body. Inside the body are placed a grounding downconductor continuity tester, a multimeter and a short-connected copper strip with fixing bolts.

Both the upper cover and the box body are made of epoxy resin.

The screw holes are located at the four corners of the loam cake and the four corners of the box body.

There are two short copper strips.

The cross-section of the short-connected copper strip is 60mm*10mm, and the length is 0.8m.

The tool of the utility model ensures that the replacement of the leakage current meter of the lightning arrester can be carried out in a charged state, avoiding the need for power failure; the special tools are placed in a set, the wiring is simple and reliable, easy to carry and install, saves time and effort, and can greatly improve work efficiency. ;Combined insulation bracket, better guarantee the safety of personnel during operation.

After confirming that there is no abnormality in the arrester body, the operator can use the special set of tools to replace the leakage current meter. Under the condition of ensuring the reliable grounding of the arrester, the operator wears insulating boots and stands on a special insulating support to reliably short-circuit the leakage current meter with two short-circuit copper straps with fixed bolts, and then replace the faulty leakage current meter with tools and tools. Finally, ensure that the leakage current meter is reliably connected to the main circuit, and finally remove the short-circuit copper strip to clean up the site. This special set of tools ensures that the replacement of the leakage current meter of the arrester can be carried out in a new operation mode in the charged state, avoiding the need for power failure; the special tools are placed in a set, the wiring is simple and reliable, easy to carry and install, saves time and effort, and can greatly improve work efficiency; The combined insulating support can better guarantee the safety of personnel during operation, has a wide range of applications, and has a good market prospect and application value.

The beneficial effects of the utility model are:

(1) Through the insulation bracket and the short-connected copper strip, this device effectively ensures the new operation method that the replacement of the leakage current meter of the arrester can be carried out in the live state, avoiding the need for power failure;

(2) The device is placed in a complete set with special tools, the wiring is simple and reliable, easy to carry and install, saves time and effort, and can greatly improve work efficiency;

(3) This device better guarantees the safety of personnel during operation through the simple combined insulating bracket.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the operating principle diagram of the operation method step 2 of the present utility model;

Fig. 3 is the operating principle figure of step 4 and step 5 of the operation method of the present invention.

In the figure: 1. insulator, 2. box body, 3. grounding downconductor continuity tester, 4. multimeter, 5. adjustable wrench, 6. dull wrench, 7. insulating support, 8. short Connect copper strip, 9, screw hole, 10, loam cake.

detailed description

As shown in Figure 1, when the utility model is carrying out the work of replacing the leakage current meter with electricity on the lightning arrester, the special complete set of tools can be modularized and assembled in multiple special tool combinations.

The whole set of special tools is a toolbox. The upper cover 10 and the box body 2 of the toolbox are all pressed by insulating materials such as epoxy resin, and there are screw holes 9 at the corresponding positions of the four corners of the upper cover 10 and the box body 2. The screw holes 9 of the upper cover 10 and the box body 2 are used to fix the insulating support 7. The insulating support 7 should be a porcelain insulator or a composite insulator with an umbrella skirt, good insulation and reliable strength. There are screws at both ends of the insulator 1, which can be fixed on Four corner screw holes 9.

The staff can stand on the upper cover 10 of the toolbox when replacing the leakage current meter 13 with electricity; inside the box body 2 there is a grounding downconductor continuity tester 3, a multimeter 4, an adjustable wrench 5, a dead wrench 6, and an insulating support 7 And the short-connected copper strip 8 with fixing bolts, the short-connected copper strip 8 is two, the section is 60mm*10mm, and the length is 0.8m.

The specific steps of the working method:

Step 1: Before replacing the faulty leakage current meter 13, the operator confirms that the arrester 1 resistive current live test result is qualified, and the arrester body is normal; if the arrester body is defective, this work cannot be performed.

Step 2: As shown in Figure 2, the operator uses the grounding downconductor continuity tester 3 to judge whether the connection between the grounding downconductor 12 of the arrester and the main ground network is good, and the grounding of the arrester 1 should be reliable.

Step 3: The operator uses the upper cover 10, the box body 2 and the insulating support 7 to assemble a simple insulating support. Before using the insulating support, it should be confirmed whether the support is stable, and then start the operation; the purpose of using the insulating support is to protect the operator and prevent operation Personnel are injured by floating potentials that may be caused by mishandling.

As shown in Figure 3,

Step 4: The operator uses two short-circuit copper strips 8 with fixing bolts to short-circuit the leakage current meter 13, and both wires must be reliably short-circuited. At this time, the reading of the leakage current meter 13 should return to 0. After short-circuiting, use the multimeter 4 to measure Check whether the leakage current meter 1 reliably connects the upper lead wire 11 of the leakage current meter and the grounding down conductor 12 . The use of two is for double insurance considerations to prevent one from loosening and falling off.

Step 5: After reliably short-circuiting the leakage current meter 13, replace the leakage current meter with adjustable wrench 5, blank wrench 6 and other tools. The replaced leakage current meter 13 should read well.

Step 6: Remove the short-circuit copper strip 8.

Step 7: Clean up the site and confirm that there are no leftover objects.

Claims (5)

1., for spark gap charged for replacement leakage current table special complete instrument, including workbox, workbox includes upper cover and box Body, it is characterised in that: upper cover and box body are insulant, are equipped with screw on upper cover and box body, the screw of upper cover and box The position of the screw on body is corresponding, and connecting between screw and the screw of box body of upper cover has insulation column, and insulation column is porcelain Insulator or composite insulator, insulation column two ends are provided with screw rod；Tray interior be placed with down conductor continuity test instrument, ten thousand With table and with the short circuit copper strips of fixing bolt.

It is the most according to claim 1 for spark gap charged for replacement leakage current table special complete instrument, it is characterised in that: Upper cover and box body are made by epoxy resin.

It is the most according to claim 1 for spark gap charged for replacement leakage current table special complete instrument, it is characterised in that: Screw is positioned at the corner of upper cover and the corner of box body.

It is the most according to claim 1 for spark gap charged for replacement leakage current table special complete instrument, it is characterised in that: Short circuit copper strips is two.

5. according to described in claim 1 or 4 for spark gap charged for replacement leakage current table special complete instrument, its feature exists In: the cross section of short circuit copper strips is 60mm*10mm, a length of 0.8m.