The maintenance and performance of the re-insulated terminals
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The maintenance and performance of the re-insulated terminals

Views: 0     Author: Site Editor     Publish Time: 2023-02-17      Origin: Site


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What do re-insulated terminals mean?  A re-insulated terminal is a kind of wire that wraps non-conductive insulating material around the wire. Generally, this kind of wire has better insulation than ordinary wires. At present, resin, plastic, PVC, and silicone rubber can be used as non-conductive materials for wires in China. Making these materials into the insulation layer of wires can prevent the conductor from contacting the outside world, to avoid electric leakage and short circuit of wires.

Here is the content list

  • The performance of the re-insulated terminals

  • The maintenance of the the re-insulated terminals

The performance of the re-insulated terminals

1. re-insulated terminals are classified into rubber insulated wires, PVC insulated wires, and rubber cables. This is a conventional classification, but if we want to divide it from the detailed structure and purpose of insulated wires, we usually divide it into fixed laying wires, insulated flexible wires, outdoor PVC insulated wires, copper core PVC insulated installation wires, and agricultural directly buried aluminum core plastic insulated plastic-sheathed wires.

2. In addition, it is not enough to know only the type of insulated wire. In practical application, we should have a clearer understanding of the AC voltage and operating temperature applicable to each conductor. If the working voltage of rubber insulated wire is 500 V, the long-term allowable working temperature is below 65 ℃. The normal working voltage of PVC insulated wire shall be ≤ 450 / 750 V, and the working temperature shall not exceed 105 ℃.

The maintenance of the the re-insulated terminals

First, power off the faulty line! power failure! power failure! Important things are to be repeated 3 times.

For equipment with a power plug, just unplug the power plug directly; If there is no power plug, please turn off its power in the distribution box.

Cut off the damaged part. If the damage range is relatively small, cut off the damaged part directly. If the length after cutting is not enough, you can try to add another wire to extend it. If the damage range is large, it is recommended to replace them all.

After cutting off the damaged part, use a knife to peel off about 3 ~ 5cm of the outer insulating sheath of the wire head on both sides of the wire (the gray plastic part of the outermost layer of the wire in the figure), and then use a wire stripper to peel off the insulating sheath of the internal wire. If welding, peel off about 1cm, and if winding, peel off about 2cm. Be careful not to hurt the conductor inside the wire.

Please be sure to wrap the conductor tightly to avoid the danger that the live conductor will be exposed after the connector is broken.

If the wire is connected by welding, it is recommended to immerse the wire head in Rosin first to facilitate tin hanging later. Of course, tin can be hung without rosin, which is not necessary.

The process of hanging tin is as follows: continuously heat the wire head with a soldering iron and start adding solder wire until the solder melts and completely infiltrates the conductor. After hanging tin, welding can be carried out.

If the heat-shrinkable tube is used for insulation, please be sure to put the heat-shrinkable tube in at this time, otherwise, it will not be put on after welding.

Stack the two tinned wire ends together, and then heat the soldering iron until the solder melts and sticks tightly together.

Put on the heat-shrinkable pipe so that the welding area is in the middle of the heat-shrinkable pipe, cover all exposed metal parts, and then slowly bake the heat-shrinkable pipe with a lighter to shrink and wrap the joint.

Since the heat-shrinkable tube is easy to be punctured by the conductor, it is best to produce insulating tape outside and wrap it for 3 ~ 4 layers.

Ease Industries & Investment Co., Ltd. conducts many tests on re-insulated terminals for connection before they leave the factory, and the quality qualification rate is guaranteed. If you are in the re-insulated terminals, you can consider our cost-effective products.


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