Jiangsu Dongfang Cable Material Co., Ltd.

How to quickly identify the authenticity of high temperature wire and cable

Release time:

2022-08-17

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So, all in all, Yichu special wire and cable reminds you that the effective way to prevent water from entering the cable is prevention, because once the water enters, either make an intermediate joint or replace the entire cable.

The water ingress of the cable can easily affect the normal use of the cable. First of all, we must recognize the danger of water ingress of the cable. Generally speaking, after the cable enters the water, "water tree aging" will occur under the action of the electromagnetic field. Phenomenon, after the water tree is formed, the electric field is prone to change at the place where the cable water tree is formed, which reduces the insulation performance of the cable. When it can conduct electricity, the cable is broken down, which seriously affects the stability of the power supply. What are the reasons for the water entering the cable? Is there a solution? The editor of Yichu will tell you what to do when the cable enters the water.

First of all, what is the reason for the water entering the cable? In the long-term production practice of Yichu special wire and cable, the following three points are summarized:

1. During the cable laying process, the cable heads at both ends are not sealed or the seal is not good, or when the cable is laid through the pipe, the outer insulation of the cable is broken and water seeps into the cable.

2. After the cable is laid, the cable heads at both ends are exposed to the air or humid environment for a long time.

3. Local cable breakdown occurred during the operation of cable power supply, resulting in water infiltration into the cable.

Yichu special wires and cables give you advice on how to solve the problem of water ingress:

1. After the cable is laid, make the cable head in time, and complete the wiring to eliminate hidden dangers in the bud.

2. If only the two ends of the cable get into the water, just cut off the two ends and reconnect the cable ends.

3. If the cable has an obvious water entry point, it is necessary to cut off the cable near the water entry point and make an intermediate joint.

4. It is inevitable that there will be water accumulation in the outdoor cable well or cable channel, try to fix the cable with brackets as high as possible.

5. Use special hot nitrogen to pressurize and dry the inside of the cable. Generally, there is no such professional equipment.

6. Regularly carry out pressure and leakage tests on the cables to ensure timely understanding of the running status of the cables.

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