Requirements and core precautions for using Busbar with heat shrink insulation

PE heat shrink tube insulated busbar is a specialized insulation pipe made from heat shrink materials. Its core material is a blend polymer composed of rubber and plastic. Linear molecular chains are transformed into a network structure through irradiation or chemical methods, possessing a unique "memory effect" - after being heated and expanded, cooled and shaped, it can shrink to its original size by heating again to a specific temperature.

The Heat shrink tube polyolefin busbar is mainly made of high-quality PE material, with uniform wall thickness and compliance with RoHS environmental standards. When used, it is fitted onto the busbar and can achieve safety protection and shorten the insulation distance between phases after heating shrinkage. It is a key component of busbar insulation protection.

To ensure a tight fit and effective protection of the Heat shrink tubing busbar after contraction, sufficient preparation work must be done before use.

Firstly, it is necessary to thoroughly remove burrs and sharp corners on the busbar to avoid puncturing or cracking during the shrinkage process of the Busbar heat shrink tube, which may affect the insulation protection effect.

Secondly, before use, a quick drying cleaning agent must be used to thoroughly clean the oil stains on the Busbar sleeves insulation connection part. After the cleaning agent is completely dry, the heat shrink tubing of the busbar can be fitted to the designated position of the busbar to prevent oil stains from affecting the fit between the heat shrink tubing and the busbar.

At the same time, when cutting the heat shrink tubing of the busbar, the incision should be neat and smooth, without burrs or cracks, to avoid the spread of cracks caused by stress concentration during heating shrinkage.

The heating shrinkage of Busbar insulating tubing should follow the standard process, and appropriate heating tools and operating methods should be selected. Heating tools can be selected from constant temperature ovens, propane lamps, liquefied gas open flames, gasoline spray lamps, or industrial electric hot air guns. If a hair dryer or liquefied gas spray gun is used, it should be uniformly heated from one end to the other, or from the middle to both ends. Heating from both ends to the middle is strictly prohibited to prevent air bulging.

If using a hot air gun with a temperature range of 400 ℃ to 600 ℃, or a heating tool that produces a blue flame above 800 ℃, the heating distance should be controlled, kept at 4-5cm, and moved evenly. The flame should form a 45 ° angle with the surface of the heat shrink tube to avoid heating too close or concentrated on a certain area, and to prevent uneven thickness and burns of the heat shrink tube. If using a constant temperature oven for heating, the retraction temperature needs to be controlled between 100 ℃ and 130 ℃. The heating time for a regular specification Heat shrink busbar is 5-10 minutes, while for larger specification busbars, it needs to be extended to 20-30 minutes. After baking, it needs to be left to stand for 3-5 minutes before being removed for cooling.

After the heating shrinkage of the EV battery connector is completed, it is necessary to carry out subsequent sorting and acceptance work to ensure that the protective performance meets the standard. The heated busbar should be placed flat on a clean and soft platform to prevent scratches on the surface. It should be repaired after complete cooling.

At the same time, it is necessary to organize the heat shrink tubing at the corners of the Solid insulation tubing busbar to avoid wrinkles that may affect insulation and aesthetics. During acceptance, it should be noted that the surface of the mother heat shrink tube after heat shrinkage should be clean and flat, with uniform shrinkage, no burning, fading, bubbles, or cracking, no wrinkles at the bends, and no scratches on the surface.

If you have any questions about the selection, operation specifications or acceptance standards of Busbar with heat shrink insulation, please feel free to contact us for consultation at any time. We will provide professional technical support and customized solutions to help you efficiently complete project implementation.