Polyolefin Bushing Cover
- CCMT
- CHANGCHUN,CHINA
- Based on the order quantity
- 20,000 per month
1. Our products are constructed from high-insulation polyolefin materials, ensuring electrical insulation protection that is reliable and durable for bushings, busbars, and connectors.
2. We can make products in the custom shapes and sizes as per customers' drawings, with low investment in mold and fast matching with various power equipment.
3. Our insulating bushing cover material is highly durable and can be used in complex environments with wide range of temperatures from -40℃ to 120℃ with excellent characteristics such as weather-resistance, anti-aging, and mechanical strength.
During the operation of power transmission and distribution equipment, bushings, busbars, and connectors are frequently subjected to dust, moisture, ultraviolet radiation, and external impacts, which can all easily result in issues including poor insulation, short circuits, arcing, or accidental contact with live parts. On the side of equipment manufacturers, a protective cover that is not properly sized, hard to install, or not sufficiently weather-resistant, aside from raising overall replacement and maintenance costs, may even affect the reliability and safe operation of the whole power distribution system.
To tackle this problem, our insulating bushing cover is made from a high-insulating polyolefin material which can not only isolate the electrified parts effectively, but also significantly decrease the risk of short-circuit, arcing as well as leaking. Product is fully customizable with dimensions and structures to customer’s technical drawings, and therefore can exactly match various types of bushings, busbars and connectors. Besides, having outstanding weather, chemical and mechanical resistance, the covering is capable of remaining stable during the operation lasting long time even in harsh conditions ranging -40° C to 120° C and consequently becomes a safer and more reliable insulation protection solution for electricity grids.
Polyolefin Bushing Guard:
It is an insulation protection product that is used mainly for providing insulation protection at transformer bushings, the busbars and other live parts in power transmission and distribution networks. This insulation product is very durable, as it is made of high-performance polyolefin materials, it has great dielectric properties, good mechanical performance and is also weatherproof to such an extent that it prevents short circuits, flashovers and electrical failures due to contact with dust, moisture or foreign matter.
Parameters of the Bushing Connection Protection Cover:
Test Item | Test Condition | Test Method | Result |
UV-C Radiation | Continuous light at (63±3)°C BPT, 10W/(m²·nm)@254nm, 1000hrs | IEC 60335-1:2020/COR1:2021 | No visible change observed |
Neutral Salt Spray | Volume of Salt Solution Collected: (1.5±0.5) ml/(80cm²・h) 168hrs | IEC 60068-2-11:2021 | No visible change observed |
High temperature condition | 100℃, 24h → (23±2)℃, (50±5)%RH, 24h | IEC 60068-2-2:2007 | No visible change observed |
Low temperature condition | -30℃, 24h → (23±2)℃, (50±5)%RH, 24h | IEC 60068-2-1:2007 | No visible change observed |
Tensile strength | As received After light ageing After salt Spray After high temperature After low temperature | ISO 527-2:2012 | 9.59 MPa 9.10 MPa 8.93 MPa 8.89 MPa 9.01 MPa |
Tensile Strain at Break | As received After light ageing After salt Spray After high temperature After low temperature | ISO 527-2:2012 | 420% 420% 400% 390% 410% |
AC Withstand Voltage | AC 50Hz 36kV 1min | IEC 60243-1:2013 | No breakdown and No flashover |
AC Withstand Voltage | AC Gap 70mm,42kV,1min | IEC 60243-1:2013 | No breakdown and No flashover |
Impulse Voltage Test | Gap 70mm, 75kV, 15 impulses of | IEC 60230-1:2021 | No breakdown and No flashover |
Vertical Burning | (23±2)℃, | UL 94 - 2023 | V-0 |
The Core Advantages of Polyolefin Bushing Guards:
1. High insulation protection, enhancing equipment operation safety.
Transformer bushing guards are manufactured using high-insulation polyolefin material that prevents short circuits, arcing, and electrical breakdown very well. The products have undergone 36kV power frequency withstand voltage and 75kV impulse withstand voltage tests without any breakdown or flashover occurrence demonstrating the ability of the insulators to withstand a great stress of power and protecting high and low voltage power transmission and distribution equipment
2. Durability, reducing later maintenance costs.
Transformer bushing guards have completed a period of UV aging of 1000 hours, salt spray test of 168 hours, and testing under a temperature range from -30℃ to 100℃, with no noticeable change in appearance and with a tensile strength of at least 8.89MPa. They are suitable for outdoor use for a long time and various industrial environments, which helps to lower the need for replacement and maintenance.
3. Flexible customization to meet diverse project needs.
We are able to provide dimensions and structures per customer’s drawings, working with different equipment like transformers, switchgear, busbars and cable connectors. Our solution is flame retardant UL94 V-0 certified with consideration of safety, compatibility and engineering support requirements which makes product highly suitable for the manufacturer’s original equipment and power engineers procurements.
Applications of Polyolefin Bushing Covers:
· Transformer bushing protection: This measures insulation protection for both oil-immersed and dry-type transformer bushings, minimizes the influence of external factors on bushings, and contributes to equipment operational safety.
· Switchgear and distribution panels: Provide protection for busbars and connectors against accidental contact with foreign objects in switchgear of high/low voltages, and distribution cabinets, thereby preventing the risk of electrical faults.
· Busbar system protection: This helps in protecting the electrical insulations of the busbar junction points and the busbars themselves as it works by effectively insulating the live electrical contacts while at the same time it reduces the chances of happening a fault that leads to a short circuit, arcing over the insulators or even leaking current.
· Industrial power distribution equipment: Apart from industrial automation and power control cabinets, such devices find their way into rail transportation, the development of new energy sources, the work of power engineers, and a whole lot of power transmission and distribution equipment. These items are designed and manufactured to withstand long-term use and keep providing reliable insulation protection for crucial electrical parts.
Why Choose CCMT?
We are manufacturing company dedicated to the development, manufacturing, and marketing of cable accessories. Since starting in the late 1980's, our focus has remained on mastering the technology for electrical connections and insulation protection, leading us to accumulate a wealth of technical knowledge exceeding 40 years. Now, with a well-appointed manufacturing facility covering about 10,000 square meters, our company consists of about 200 staff and has more than 40 state-of-the-art machines. A production network capable of supplying different types of cable accessories on a large scale from heat-shrinkable to cold-shrinkable ones has been completed by us.
Strict Quality Control, Meeting International Market Access Requirements.
We have established a comprehensive quality management system and have passed ISO 9001:2015 (No. 00123Q36311R5M/2200) certification. Our products meet CE certification requirements and have passed cable heat-shrinkable and cold-shrinkable terminal type tests conducted by third-party international laboratories, meeting international environmental regulations such as RoHS and REACH.
From when the raw materials were acquired up to the delivery of finished products, each batch was subjected to intensive quality check-up. Apart from factory inspection reports, this includes visual examination, confirmation of the quantity received, and testing of performance.
The aim is that the customers can minimize the risks involved in the purchase of goods and satisfy different application requirements in countries and regions.
Flexible Logistics Solutions Ensure Global Order Delivery.
Leveraging mature production capabilities and a supply chain management system, we support multiple delivery methods, including Full Container Load (FCL), Less than Container Load (LCL), FOB, CIF, and sea, air, and land transportation, catering to diverse customer procurement needs. The company possesses stable mass production capabilities (monthly capacity can reach millions of meters or tens of thousands of pieces depending on the product), effectively guaranteeing order delivery times.
Global Export Experience Serves Multiple Regional Procurement Markets.
Ensuring stable product quality and a well-developed international export servicing system, our products have achieved success in different countries and regions overseas with the Middle East, Southeast Asia, and South America being the main ones. Our customers are spread across dozens of countries including Saudi Arabia, the UAE, Iran, India, Thailand, Brazil, and Argentina. One of the most impressive highlights in our cooperation is the delivery of tens of thousands of meters of ultra-thick (three-layer co-extruded) heat-shrinkable composite tubing by RAYCHEM.
Participating in International Exhibitions and Continuously Expanding Global Cooperation.
We are keen on participating in various global power-related industry gatherings and events. At the 2024 Dubai Power exhibition, our company was present and exhibited a wide range of cable accessories including those of the 220kV level. We are also able to keep providing customers across the world with highly effective cable connecting and insulating products due to our obtaining the international certifications, having a very reliable and standardized production system and being well-equipped with the capability of carrying out complete quality management. The markets that we mainly serve with our products include: world-wide power transmission & distribution, new energy, and industrial sectors.
FAQ:
1. What insulation properties does the polyolefin bushing cover possess?
Manufacturing the product involves the use of highly insulating polyolefin material that is resistant to 36kV power frequency voltage and 75kV impulse voltage tests. This makes the material very effective in minimizing the likelihood of electrical shorts, arcs, and leaks.
2. What environmental conditions is the product suitable for?
The bushing connection protection cover boasts advantages in weather resistance, aging resistance, and mechanical strength, and can be used stably in a temperature range of -40℃ to 120℃, making it suitable for outdoor and complex industrial environments.
