The maintenance of power cable lines mainly goes through several modes

With the deepening of Daqing's modern city construction, overhead lines are gradually replaced by cable lines, and power cables have become an indispensable transmission mode for building a modern city and beautifying the city. However, with the increase in the use of cables, whether it is the cable in operation or the cable in the new laying acceptance, there are more or less some cable sub-health problems, which brings hidden dangers to the safe operation of power cables, and even cable accidents have occurred. Therefore, strengthening the health level of cables has become an important task for us at present.

This paper analyzes the current situation of the cable lines under its jurisdiction. And formulate preventive measures for the current situation of cables.

Summary. 2. Prevent insulating oil bedroom cables from corroding rubber.

3. It is forbidden to over-bend the cable, which will concentrate the capacitive charge formed by the core wire and the metal mesh at the bend, resulting in leakage at the bend.

General requirements for the operation and maintenance of cable routes.

Hello, I'm glad to answer for you, please later, I'm working hard to sort out the answer for you, and I'll reply to you within 5 minutes.

For the maintenance of wires and cables, we divide it into six points: First, keep the surface clean, and avoid moisture, freezing, heat, and pressure. The moisture of the cable makes the moisture infiltrate into the inside, and the insulation is reduced by breaking down the inside; If it is frozen, the hard layer of the gum is easy to crack and discharge; When heated, it is easy to absorb moisture and expand, making it deformed and sensitive; The protective layer of the metal mesh layer is destroyed by compression.

2. Prevent Xiangdachun insulating oil bedroom cable from corroding rubber. 3. It is forbidden to over-bend the cable, which will concentrate the capacitance charge formed by the core imitation wire at the bend and the Jinjinnai network, resulting in leakage at the bend.

Fourth, the filler in the plug of Gaochangji closed voltage cable is mostly made of rosin or asphalt and paraffin insulating oil, which is often melted out by heating at the end of the X-line pipe, which should be checked and disposed of in time. 5. Always pay attention to the fixed ring at the end of the cable on the X-line tube, whether the crack-resistant high-voltage generator is tightened, and check it in time if there is any abnormality.

Sixth, when the plug is found to have traces of breakdown, the light one can be scraped out of the core wire with a knife and then used, and the serious one must be replaced with a new one.

Thank you for your trust and support, if you are satisfied with me, please click on the lower left corner of the screen of your hand to move the "I want to evaluate the simple and simple" to appreciate a thumbs up<>

<> tell you to be careful] Finally, I wish you a happy life.

(1) The operation ticket shall be filled in for the power cable power outage maintenance operation, and the group operation ticket shall be filled in for the maintenance operation that does not require power outage.

2) Before the operation, the name of the cable must be checked in detail, and whether the sign is consistent with the operation ticket, especially when multiple cables are laid together, it is necessary to distinguish which is the maintenance cable.

3) The maintenance of the cable, whether it is moving the position, dismantling and modifying, replacing the connector or the cable termination, must be carried out under the power failure. Due to the peculiarities of the cable, in addition to the general safety measures. Before operation, if there is no accurate verification of whether there is electricity, it will be treated as electricity.

4) For the excavation of cables or splice boxes, it must be carried out step by step from the beginning in accordance with the marking pile, and it is not allowed to forcibly excavate with metal tools to avoid damaging its steel armor or insulation.

5) For the cable or box that has been dug out, when the operation needs to hollow out the bottom of it for operation, it must be hung for protection; The hanging cable should be hung every other point, and ensure that its bending radius is within the allowable range, the minimum allowable bending radius of the cable is shown in the table, and the suspension splice box must be placed flat and firmly, and the joint must not be subjected to tension. When moving the cable splice closure box, it should usually be carried out by a power outage; If it is necessary to move with electricity, it should be moved slowly and flat to prevent insulation damage and electric shock.

Make sure the power supply has been cut off, both on the power side and the load side and grounded!!

Prevents reverse power transmission.

The other is the conventional insulation resistance measurement, check whether the appearance is damaged or something.

1. Appearance inspection and temperature inspection, visual inspection to see whether the outer sheath of the cable is damaged, whether there is corrosion, etc., temperature inspection is to check the temperature of the cable with temperature test reagent.

Second, regular maintenance is the power outage operation, check the cable joint, whether the contact is good, the rust and rust removal, the wire change ear change ear; The cable is then subjected to insulation telemetry and withstand voltage testing.