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1 、What is the principle of thermal contraction

In the role of high energy electron beam, the linear molecular structure of polyolefin material is transformed into three-dimensional network structure, which has a great improvement in mechanical strength, heat resistance, chemical resistance, heat resistance and aging. When the polymer material is heated to the melting point of the polymer, the polymer material is expanded or stretched and cooled rapidly under the influence of external force.

2 、Storage and transport of heat shrink material

Thermal contraction products in the storage and transport process to avoid direct sunlight or environmental temperature over 60, when the environment temperature exceeds 60, the thermal contraction products can occur in part of the contraction 。

3 、What is the whole cable accessories?

Cold shrinkable cable accessories, often called a & ldquo; pre Expansion & rdquo; the attachment is elastic good rubber material (commonly used with silicone rubber or EPDM), in the factory or injection molded into various cable accessories components and vulcanization molding, dilatation and lined with plastic spiral supporting bar to keep the expansion of the state. Use only gently extraction support bar, room temperature, natural contraction without flare and special tool is a new type of elastic appendages, called the cold shrink cable accessories. Cable accessories all assembly cable accessories are used and components called full cable accessories.

4 、In the use of silicone rubber electric contact protection box, the need to pay attention to those matters?

The connecting fittings and wiring overhead transformer, lightning arrester, overhead switch import lines exist big difference. So the user in silicon rubber electric contact protection box before ordering should provide details corresponding wiring hardware fittings and wiring to the company to my company to the user provides suitable types of products.

5 、In the use of heat shrinkable busbar protection sleeve should pay attention to those matters ?

1、Heat shrinkable sleeve is fixed contraction ratio and heat shrinkable sleeve insulation pressure depending on contraction of the casing thickness, so in the selection must be in accordance with the provisions of the product description methods & mdash; & mdash; bus bars of different sizes using the corresponding specifications of the casing.

2、Copper and aluminum busbar in the process of production, storage, handling, lining tin is easy to cause surface scratches, burrs, heat shrinkable tube in heat shrinkage is mainly rely on huge internal stress to achieve the purpose of contraction, and heating the heat shrinkable sleeve is soft. At this time if in surface sharp burr of the copper and aluminum bus, heat shrinkable casing will be scratched, caused by the result is heat shrinkable sleeve instant cracking or run for a period of time after cracking. So be sure to check before shrinkage copper busbar without burr and to make corresponding processing copper bus bar surface smooth.

3、Mentioned in Item 2 of the mechanism based on, before the use of continuous heat shrinkable sleeve, when according to specific needs the number of casing cutting, must ensure that the incision smooth, can not appear zigzag incision.

6 、CYG cable accessories have quality system certification and test reports?

CYG group has passed ISO9001 quality management system certification; cable accessories are passed “ power part of the electrical equipment quality testing center ” (Wu Gao Gao) detection, in accordance with GB11033-89 standards。

7 、CYG group of cable accessories with what kind of stress control method ?

Our product is a high elastic stress control tube, which is made of high elastic stress control tube with high dielectric constant (K value 30), which can be used to reduce the electric field strength. The high dielectric constant can be used to improve the electric field distribution, which can effectively improve the electric field distribution.