Heat shrink tubing is one of the important materials for commonly used wire and cable protection. Many people worry about the insulation performance of heat shrink tubing when they first use it. As a source manufacturer of high-quality heat shrink tubing that has been in the industry for more than ten years, we provide details. Users who have this question should analyze the insulation performance of heat shrink tubes.

    First, let me tell you the conclusion: Conventional heat shrinkable tubes can be manufactured with a rated voltage of 600V, can work normally in a 600V voltage environment for a long time, and provide corresponding protective performance. It can meet the standard of no breakdown in 1 minute under 2500V voltage environment, breakdown strength ≥15kV/mm, and volume resistivity ≥10¹⁴ Ω·cm. From the above experimental test data, it can be concluded that the insulation performance of heat shrinkable tubes is very excellent.

    If it is used for the insulation wrapping of household appliances parts and wiring harnesses, there is no problem at all. Household power supply is 220V, and industrial power is mainly 380V. The rated insulation level of 600V can meet the insulation requirements of household voltage 220V and industrial voltage 380V. of. However, in the heat shrink tube industry, in order to meet the needs of various users, ultra-thin heat shrink tubes can only reach 300V. Special attention is required. Remember that the rated voltage level of ultra-thin heat shrink tubes is only 300V. When purchasing heat shrink tubing, as long as it is a conventional heat shrink tubing, it can meet the voltage insulation level requirement of 600V.

    Purchasing suggestions: In summary, the insulation requirements of general electrical circuit insulation layers, automobile wiring harness insulation layers, line solder joint insulation, electronic component insulation and communication fields can be met by using conventional heat shrink tubes. Special products in high-voltage environments such as power distribution stations, high-voltage electrical cabinets, and high-voltage busbars need to purchase special high-voltage busbar heat shrinkable tubes according to the voltage level.