The key to the operation and maintenance of the national standard cable route includes line inspection, maintenance, and solution of shortcomings.

Inspection of cable lines

Although the common faults inside the cable line can not be found immediately according to the inspection, the inspection, inspection and analysis of the natural environment standards for cable laying can still find shortcomings and other problems that endanger the safety operation. Therefore, the promotion of inspection has a key practical significance for the safe operation of cable lines.

For the cable line route laid in the ground, it should be checked whether everything is normal on the ground, whether there are excavation marks and line marker piles are detailed.

Do not pile up debris, fly ash, building decoration materials, heavy goods, pH feces or pile lime pit on the cable path.

For the cable lines of highway Bridges, it should be checked whether the cable lines on both sides of the bridge are dragging too tight, and whether the maintenance pipes or grooves are loose or rusted.

The outdoor cable and terminal equipment head connected to the transmission line should check whether the terminal equipment head is detailed, whether the contact of the transformer grounding line is heated, whether the lead pack of the cable line is cracked and oozed oil, and whether a section of the cable line near the road is hit by a car.

Multiple side by side cables to check the current distribution and cable skin temperature conditions. Avoid cable loading or burning due to poor contacts.

The cable in the tunnel construction should check whether all the cable parts are normal, whether the connector has deformation and oil seepage, whether the temperature is abnormal, whether the prefabricated components are lost, and whether the natural ventilation, drainage pipes, lighting fixtures and other equipment is detailed.

Cable lines laid in houses, tunnel construction and cable trenches without backfilling, especially check whether the fire safety equipment is sound.

Two cable line maintenance work

After the national standard cable route has a common fault, it is necessary to carry out maintenance work immediately to prevent a lot of water intrusion and expand the scope of damage. The key of the solution process includes the detection of common faults, the inspection of common fault conditions and root causes, and the maintenance and detection of common faults.

In order to avoid damage to the cable in the excavation of the cable route, it is necessary to have professional staff of cable technology at the site to guard the excavation and inform the construction team of the common problems related to the construction of the project.

Avoid cable erosion.

1) When part of the soil layer of the cable path has compounds that harm the lead cover of the cable line, this section of the cable line should be installed in the pipeline, and the neutral soil layer is used as the gasket and cover the cable line, and the cable is brushed on the cable to drain.

2) In order to avoid chemical corrosion of cable lines, it is necessary to analyze the chemical composition of the soil layer on the cable path, and there is a special file describing the chemical composition of the etch and soil layer.

Equipment in the indoor cable joint, the structure is very simple, the operation standard is also good, general basic maintenance work:

1) Clean up the terminal equipment head and check whether there are arc discharge marks and oil seepage.

2) Check whether the terminal equipment head transformer grounding line contact is good.

3) Check the support frame and cable armouring cable, brush paint to resist corrosion.

4) Check whether the condition of the grounding device meets the regulations.

The summary must have a brief description and description of the situation, some very simple, some more detailed. This part of the content is mainly to work in the subjective factors, standards, beneficial and unfavorable factors and work in the natural environment and basic analysis.

Outdoor cable terminal maintenance equipment in the outdoor cable terminal, the structure is very complex, the operation standard is weak, the general maintenance work is:

1) Clean the terminal equipment head and porcelain waterproof sleeve, check whether the box body and porcelain waterproof sleeve have cracks, and whether the surface of the porcelain waterproof sleeve has charge and discharge marks.

2) Check whether the contact of the transformer grounding line of the terminal equipment head is excellent, especially the corrosion resistance of the copper and aluminum connection heads.

3) Repair and maintain pipes and paint rusty armored cables, and replace rusty support frames.

4) Check the cracking of lead and corrosion of aluminum.

5) National standard cable check whether the grounding device condition meets the requirements.

Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable. Hotline: 16678668098