EPDM cold shrink tube with stress control
- CCMT
- CHANGCHUN,CHINA
- Based on the order quantity
- 100,000 meters per month
1. EPDM stress relief tubes effectively reduce electric field concentration at cable joints and terminations, lowering the risk of partial discharge and breakdown.
2. EPDM stress control tubes are made of high-performance EPDM rubber with a tensile strength of 8-10 MPa and an elongation at break ≥400%, possessing both mechanical strength and toughness.
3. EPDM stress control cold shrink tubes feature a cold shrink design, allowing for quick and easy installation without the need for heating or special tools.
Electric filed at cable terminations and joints is badly deformed because of a few reasons like missing insulations, conductors and shields are not in a continuous way and the electric field is very strong at particular points only due to local defects. As a result of these, over time period, partial discharge, tree like paths and breakdown in the insulation can occur as well.
Our EPDM stress relief tube is made of a high-performance EPDM rubber composite conductive filler to deal with this problem. By leveraging its adjustable conductivity, it evenly distributes the electric field. The cold-shrink structure that the tube has helps it to strongly cling to the cable interface so that it prevents stress concentrations and ensures the joint's safe operation for many years to come.
Product Performance Specifications:
| Test Method | Test Data |
| Hardness(Shore A) | 45±5 |
| Tensile Strength(Mpa) | 8-10 |
| Elongation Breakdown(%) | Over 400% |
| Volume resistivity(Ω·cm) | 10⁶-10¹² |
| Dielectric constant(ε) | 20-25 |
Product Advantages:
1. Our EPDM cold shrink stress control tube is a lightweight and an excellent addition to the cable joint during suspension installation; it does hardly add some loads, thus, the risk of interface loosening due to gravity caused by the long-term operation is significantly reduced.
2. The EPDM cold shrink stress control tube, offered by us, is able to accommodate cable movement caused by dynamic loading such as wind, galloping, thermal expansion and contraction through many changes, and at the same time it keeps the close cooperation with the cable interface and prevents the cable from being detached or gaps developed by the change of stress dynamically.
3. Our EPDM stress control cold shrink tube keeps its dielectric strength constantly even in the case of very cold or very hot weather, guaranteeing that the joint area electric field stays balanced and that the danger of interface breakdown is brought down to the minimum.
4. Due to its remarkable resistance to ozone corrosion and UV radiation, the EPDM stress control tube we supply will not develop surface cracks and will maintain its functionality even after being exposed for a long period of time. This product can be left outdoors without anyone looking after it for more than 20 years, thereby minimizing the repair costs as well as the replacements in the long run.
Product Application Scenarios:
This item may be used for terminal joints, for intermediate connections and insulation transition parts of power cables at a medium or high voltage level. Its application is found in power transmission and distribution networks, substation busbar leads, switchgear outlets, box-type transformers, and collection lines of wind power, photovoltaic, and other new energy power plants.
This product is mainly suited for such applications where the requirements for field stress control and long-term operational reliability are very high. As a result, you should choose it for your cable connections at such places.
About CCMT:
Founded in 1986, our company has a floor space of about 10,000 square meters and staff of more than 200. Also, we possess a set of more than 40 professionally operated machines. For more than forty years, the focus has been on both R and D and production of cable accessories with full production cycle from making the compound to the delivery of finished goods. Product line: cold-shrink / heat-shrink cable accessories, sealing tapes. Also, services and products offered by us are used in power, energy, industry, and others related facilities areas to support their transmission and distribution, new energy connection activities mainly.
Certification Standards:
AISO 9001:2015 Certificate Number 00123Q36311R5M has been awarded, quality management system certified, CE certified, SGS product material safety certified, and we also comply with RoHS, REACH and other export environmental regulations.
Export Cooperation:
We have been actively involved in power and communication infrastructure projects abroad. Our work has included supplying several hundreds of meters of ultra-thick, tri-layer co-extruded heat-shrinkable composite tubing RAYCHEM and several tons of potting compound SHELL. This work has been consistently well-received by our customers. In addition to gaining their clients' business, the cooperation with these companies has enabled us to broaden our market presence internationally, sending many products to various countries in the Middle East, Southeast Asia, South America, the EU, and other regions.
Exhibition Activities:
In April 2024, the Middle East International Power & Energy Exhibition (MEE) hosted our company amongst its visitors. Besides, it also allowed us a window for interaction between the key industry representatives from the global electricity transmission and distribution, new energy, and infrastructure sectors. We demonstrated cold shrink tubing series of accessories. Regional customers showed their interest in our offerings. The show also enabled us to gather insight into the Middle Eastern market's technical specifications for power connection products and serve as a basis for future product customization and regional collaboration.
FAQ:
1. How to ensure accurate selection? Can I return or exchange a product if the selection is incorrect?
Selecting cold shrink joint stress tubes depends on comparing the measured outer diameter of the cable joint with specifications. Prior to the actual product acquisition the dimensions of a sample can be cross checked with the product. If an item has not been opened for a standard product that does not adversely affect resale, returns or exchanges should be discussed and agreed upon within 7 working days of receipt based on measured data and serial number; the customized product is settled in accordance with the contract.
2. What should I do if problems occur during installation?
If you encounter problems during installation, you can contact our technical staff for remote guidance.
