How Does a 2.5:1 Shrink Ratio Enhance the Application Versatility of Busbar Heat Shrink Sleeves?

The difficulty in the selection of busbar insulation protection is not only whether the heat shrinkable tube can be sleeved into the busbar, but whether the product can meet the requirements of size fitting, insulation wall thickness and equipment structure at the same time after shrinkage. For copper or aluminum bars with different width, thickness and cross-sectional shape, if the heat-shrinkable tube is selected only according to the size of the busbar, there may be problems such as insufficient expansion size, unsatisfactory adhesion after shrinkage, or wall thickness that does not meet the design requirements. 

Shrinkage ratio is one of the parameters to be considered when solving this problem. CCMT 's busbar heat shrink sleeve adopts a 2.5 : 1 shrinkage ratio. Compared with the common 2 : 1 shrinkage ratio products in the industry, it can provide greater expansion and shrinkage ratio space, and provide more selection possibilities for insulation protection of busbars of different sizes. 

Shrinkage Ratio of 2.5 : 1 and 2 : 1 : The Difference Lies in the Size Adaptation Space.

After heating, the inner diameter of the tube gradually shrinks and fits the surface of the busbar. The shrinkage ratio usually represents the proportional relationship between the expanded inner diameter and the completely shrunk inner diameter, so it is an important index to evaluate the size adaptation ability of the product. 

Taking the same fully contracted inner diameter as an example, in theory, the expansion inner diameter corresponding to the 2.5 : 1 contraction ratio can be greater than the 2 : 1 product. This makes the heat shrinkable tube have a larger size space in the expansion state, which is conducive to the adaptation of the bus bar with large size change. 

For distribution equipment manufacturers that need to deal with multiple busbar specifications, this difference can increase the flexibility of selection. However, the shrinkage ratio does not directly represent all the busbar sizes that the product can cover. The initial inner diameter of the heat shrinkable tube, the inner diameter after shrinkage, the wall thickness and the cross-sectional shape of the busbar will still affect the final adaptation results.

CCMT Busbar Heat Shrink Sleeve : From Shrinkage Ratio to Specific Specification Matching. 

Our busbar heat shrink sleeve is used for insulation protection of busbars in power equipment. For the selection requirements of different voltage levels and busbar sizes, the purchaser can focus on checking the following parameters:

· Shrinkage ratio : 2.5 : 1, which provides a larger proportion of space for product matching under different size conditions. 

· Voltage level : According to the existing product series and project requirements, the corresponding models of 10kV, 20kV or 35kV are confirmed. 

· Inner diameter before contraction : to determine whether the heat shrinkable tube has enough expansion space to meet the requirements of busbar assembly. 

· Inner diameter and wall thickness after shrinkage : Confirm whether the size and thickness of the insulating layer after shrinkage meet the design requirements of the equipment. 

· Applicable busbar width : Combined with the busbar width, thickness and cross-section structure, check the product specifications and practical application conditions. 

These parameters need to be judged in combination with specific models. Even if the two products have the same shrinkage ratio, the size and wall thickness before and after shrinkage may be different. When comparing suppliers, buyers should give priority to checking the actual size data and corresponding technical requirements. 

For equipment manufacturers with a variety of busbar specifications that need to be matched, the 2.5 : 1 shrinkage ratio can be used as a preliminary screening condition, and then the final model is confirmed by specific dimensions and performance parameters.

Cable Accessories Manufacturing Experience and Project Service Accumulation.

The selection of busbar heat shrink sleeve not only involves size matching, but also needs to consider whether the product quality, application conditions and technical data of suppliers are complete. Founded in 1986, CCMT has more than 40 years of experience in the production of cable accessories and continues to serve the power and related industries. 

In the long-term business development process, we have provided various products for ABB, CANUSA, RAYCHEM, 3M and SHELL, and participated in the supply projects of cable accessories for Fangjiashan Nuclear Power Plant, Guangdong Lingao Nuclear Power Plant and Hainan Nuclear Power Plant. These experiences reflect our business accumulation in the field of cable accessories. 

In terms of quality management and compliance, we have obtained ISO 9001 : 2015 quality management system certification, and have relevant CE certification and RoHS, REACH testing or compliance data. The purchaser can check the corresponding certificates, test reports and technical documents according to the specific product model and project requirements. For procurement projects with clear technical specifications, in addition to confirming the supplier 's certification and production experience, we can also provide corresponding third-party testing reports at the supplier 's request.

How to Confirm Whether the 2.5 : 1 Busbar Heat Shrinkable Tube Is Applicable ?

Before determining the purchase model, it is recommended to first clarify the width, thickness, cross-sectional shape and equipment use conditions of the busbar, and then check the inner diameter before shrinkage, the inner diameter after shrinkage, the wall thickness after shrinkage and the corresponding voltage level of the heat shrinkable tube. 

If the project involves multiple busbar specifications, the size adaptation space brought by the 2.5 : 1 shrinkage ratio can be evaluated first, and then the model can be confirmed one by one according to the actual size of each busbar. For special sections, complex assembly structures or projects with clear insulation performance requirements, it should be judged in combination with product technical data and necessary installation verification.