Manufacturer of Electrical Insulation Sleeving Self Locking Silicone Overhead Line Cover

Product Description

Self-locking Silicone Overhead Line Cover

Self-locking silicone overhead line cover is made of high quality silicone rubber material, with excellent electrical, anti-leakage marking performance, excellent weather resistance, high mechanical properties, with hydrophobic and hydrophobic migration characteristics, high and low temperature resistance is extremely excellent. It is convenient and simple to install, saves labor and time, and is used for insulation protection of cables and wires, and increases the safe distance between objects and cables/ wires

Features:

* Soft and resistant to bending

* Long service life, aging resistance, corrosion resistance

* Flame retardant performance: V-0, non-flame retardant can be customized

* Color: Red, Gray

* Easy installation, no flame required, short power-off construction time

Support customization

Contact us for free samples

VR

Technical Performance

Item	Typical Value	Test Method
Electrical Strength Test	≥20V/mm	GB/T 1408.1-2006
Volume Resistivity	≥1×10^14Ω·cm	GB/T 1410-2006
Dielectric Constant	2～3	GB/T 1409-2006
Shore Hardness	70±5A	GB/T 531
Mechanical Properties Before Heat Ageing
Tensile Strength	≥4.0MPa	GB/T 528
Elongation at break	≥200%	GB/T 528
After Heat Ageing 180℃, 7d
Tensile Strength Change	±30%	GB/T 528
Elongation Change	±30%	GB/T 528
Low Temperature Elongation -15℃, 2h	≥20%	GB/T 2951.4-1997
Low Temperature Flexibility -50℃, 4h	No cracks	UL224-2004
High Temperature Crack Resistance 155℃, 2h	No cracks	GB/T2951.6-1997

Dimensions

LJ Type Aluminum Strand Applicable Product Selection Table
Nominal cross-sectional area mm²	Nominal outside diameter mm	Specifies the specifications of the insulation bushing mm
16	5.10	Ф 8
25	6.45	Ф 10
35	7.50	Ф 10
50	9.00	Ф 12
70	10.80	Ф 14
95	12.50	Ф 16
120	14.25	Ф 18
150	15.75	Ф 20
185	17.50	Ф 22
240	20.00	Ф 24
300	22.40	Ф 28
400	25.90	Ф 32
500	29.12	Ф 35

Size is available to customize

Voltage Level and Wall Thickness Level Corresponding Table
Votalge Rate	≤10kV	≤35kV	≤110kV	≤220kV
Wall Thickness	2.0±0.3mm	2.6±0.4mm	4.0±0.5mm	6.0±1.0mm

Company Show

Suzhou Volsun Electronics Technology Co., Ltd. was founded in 2006. We keep focusing on the R&D, production and sales in insulation, sealing & protection solutions for over 18 years
Quality is our culture. Volsun has a modern quality management system, which has passed a series of quality system certification such as IATF16949, ISO9001 etc
Up to now, Volsun cooperated with customers from 88 countries, we offer suitable sealing, waterproof solutions for some well-know enterprises in communication, Automobile, Power industry etc

Certifications

Abroad Exhibition

Las Vagas AAPEX

Moscow Expo

Hannover Messe

Packing & Delivery

Trade terms	FOB, EXW, CIF, DDU, DDP, CFR
Payment terms	T/T, L/C, Negotiable
MOQ	100M
Supply capability	1,000,000 mts per month
Lead time	Usually 3-5 working days
Shipment	Express, Air, Sea
Port	Shanghai, Ningbo, Shenzhen
Sample availability	Yes
Sample time	Usually 1-3 days
Packaging	Normal: Plastic bag & Carton & Pallet Special: Customized packing

FAQ

Q 1. How long is the payment term
A: We accept T/T 50% deposit and 50% balance against B/L or L/C copy at sight, also accept Western Union, VISA and Paypal

Q 2. What is the normal lead time for product orders
A: The average lead time for prototype/first piece is 7~10 days, if tooling is involved, the lead time for production tooling is 10 days, and the average production time after sample approval is 2-3 weeks

Q 3. What is your standard packaging
A: All goods will be packed in cartons and loaded on pallets. Special packing methods are acceptable when needed

Q 4. Can you tell us the monthly production capacity of your products
A: It depends on the model, we produce more than 1500 tons of rubber materials per month

Q 5. What kind of certificates do you have
A1: We have ISO9001:2015, IATF16949:2016, ISO14001:2015, ISO45001:2018 certified
A2: We have various rubber compounds approved by UL, ROHS and REACH

Q6: How to check the quality of bulk order
A1: We provide pre-production samples to all customers before mass production if needed
A3: We accept third-party inspection, such as SGS, TUV, INTERTEK, BV, etc

Q 9: Can you provide customized service
A: Yes, we accept customization and can produce products in different sizes, packaging, colors according to requirements

Volsun presents an advanced solution for high-voltage line safety with our Manufacturer of Electrical Insulation Sleeving Self Locking Silicone Overhead Line Cover. This product is specifically engineered to provide exceptional protection and reliability on overhead distribution and transmission systems. As a versatile and robust silicone overhead line cover, the design integrates electrical insulation sleeving materials with a self locking line protector mechanism to deliver superior performance in harsh environments, ensuring long-term high-voltage line safety for utilities, contractors, and maintenance crews

Product Overview

The Volsun Manufacturer of Electrical Insulation Sleeving Self Locking Silicone Overhead Line Cover is fabricated from premium grade silicone elastomer and enhanced insulating components. The silicone overhead line cover achieves a balance of flexibility and mechanical strength, while the electrical insulation sleeving construction ensures consistent dielectric properties along the protected conductor. The self locking line protector feature offers quick, secure installation without the need for complex tools, minimizing downtime and enhancing worker safety during live-line and de-energized operations. This combination of silicone overhead line cover materials and integrated electrical insulation sleeving positions the product as a reliable option for maintaining high-voltage line safety across a range of climatic and operational conditions

Key Features

- Durable silicone material: The silicone overhead line cover is produced from high-purity silicone elastomer that resists UV degradation, ozone, and extreme temperature variations. This durability extends product life while maintaining the insulating performance required for high-voltage line safety

- Integrated electrical insulation sleeving: The design includes a continuous layer of electrical insulation sleeving, providing consistent dielectric strength and uniform protection. The electrical insulation sleeving effectively prevents corona, arcing, and flashovers in contaminated or wet conditions

- Self locking line protector mechanism: The self locking line protector system allows for fast deployment and secure retention on conductors. By combining the silicone overhead line cover with a self locking mechanism, installers can achieve rapid attachment and removal with minimal effort, maintaining safety for crews working near energized lines

- Flexible and conformable: The silicone overhead line cover is highly flexible, enabling it to conform to various conductor diameters and fittings. The electrical insulation sleeving retains its insulating characteristics while accommodating bends and splices without compromising protective coverage

- High mechanical strength: The product resists abrasion, impact, and mechanical wear. The self locking line protector adds mechanical stability to the silicone overhead line cover, keeping it securely in place under wind loading and during live-line maintenance

- Weather resistance: The silicone overhead line cover’s inherent weather-resistant properties protect the electrical insulation sleeving from moisture ingress, salt spray, and industrial contaminants, thereby enhancing high-voltage line safety in coastal and polluted environments.

- Low maintenance: Thanks to its durable silicone and reliable electrical insulation sleeving, the self locking line protector requires minimal maintenance or replacement, reducing lifecycle costs for utilities and contractors committed to high-voltage line safety

Applications

The Volsun Manufacturer of Electrical Insulation Sleeving Self Locking Silicone Overhead Line Cover is suited for a broad range of applications where reliable insulating protection and convenient installation are essential. Typical use cases include:

- Overhead distribution networks: Use the silicone overhead line cover and electrical insulation sleeving to protect phase conductors, jumpers, and splices during construction, maintenance, and emergency repairs to ensure uninterrupted high-voltage line safety

- Transmission lines: For high-voltage transmission corridors, the self locking line protector provides durable insulation and retention, reducing the risk of accidental contact and ensuring prolonged high-voltage line safety under heavy environmental stress

- Live-line work: The silicone overhead line cover’s flexibility and integrated electrical insulation sleeving support live-line maintenance procedures by offering secure protection and easy handling. The self locking line protector streamlines installation during energized operations

- Emergency response: Rapid deployment is critical in fault conditions; the self locking line protector combined with silicone overhead line cover allows emergency crews to quickly insulate exposed conductors and restore high-voltage line safety until permanent repairs are completed

- Renewable energy interconnections: In wind and solar farm grid tie-ins, the silicone overhead line cover and electrical insulation sleeving protect new and existing overhead interconnections, reinforcing high-voltage line safety and reliability

Innovation and Technical Advantages

Volsun’s Manufacturer of Electrical Insulation Sleeving Self Locking Silicone Overhead Line Cover incorporates several innovations and technical advantages that differentiate it from conventional products. The silicone overhead line cover leverages modern polymer science to deliver improved tensile strength and elongation, while maintaining excellent insulating properties. The electrical insulation sleeving is engineered to resist tracking and erosion, ensuring dielectric integrity over extended service life. Using a self locking line protector mechanism optimizes field deployment time and reduces reliance on specialized tools, which minimizes worker exposure to energized components and enhances overall high-voltage line safety

- Enhanced dielectric performance: The electrical insulation sleeving used in the silicone overhead line cover provides consistent permittivity and high breakdown voltage resistance. This ensures reliable protection against electrical faults and minimizes the risk of transient flashovers

- Thermal stability: The silicone overhead line cover maintains performance across a wide temperature range, preserving the mechanical properties of the electrical insulation sleeving in both cold and hot climates. The self locking line protector is engineered to retain locking force despite thermal cycling

- Contamination tolerance: The silicone surface resists contamination buildup and facilitates water shedding, minimizing leakage currents and preserving the electrical insulation sleeving’s effectiveness for extended high-voltage line safety

- Easy logistics and compatibility: The modular design of the silicone overhead line cover and self locking line protector supports compatibility with a variety of conductor sizes and accessories. On-site fitting and storage are simplified, and the electrical insulation sleeving is preformed to reduce installation complexity

- Cost-effective lifecycle: Reduced replacement frequency due to the silicone overhead line cover’s durability and the electrical insulation sleeving’s resistance to degradation lowers lifecycle costs. Faster installation times associated with the self locking line protector also yield cost savings in labor

Quality and Compliance

Volsun adheres to stringent manufacturing and quality control processes in producing the Manufacturer of Electrical Insulation Sleeving Self Locking Silicone Overhead Line Cover. Each silicone overhead line cover undergoes electrical and mechanical testing to validate the performance of the electrical insulation sleeving and the reliability of the self locking line protector. Materials are selected and tested to meet industry standards and regulatory requirements for high-voltage line safety, including dielectric properties, flame retardant, and environmental resilience. Volsun’s commitment to quality ensures that the silicone overhead line cover consistently supports utility-grade performance metrics and robust electrical insulation sleeving function for safe, reliable service

Installation and Handling

Installation of the Volsun Manufacturer of Electrical Insulation Sleeving Self Locking Silicone Overhead Line Cover is designed to be straightforward. Technicians simply position the silicone overhead line cover over the conductor, engage the self locking line protector, and confirm secure fitment. The electrical insulation sleeving is pre-formed and marked to indicate correct alignment, making deployment rapid and reliable. Maintenance requirements are minimal: periodic inspections for mechanical damage and contamination are recommended to ensure ongoing high-voltage line safety and optimal service life

Volsun’s Manufacturer of Electrical Insulation Sleeving Self Locking Silicone Overhead Line Cover unites high-performance silicone materials, precision electrical insulation sleeving, and a practical self locking line protector into a cohesive solution for modern power systems. With superior weather resistance, mechanical strength, and straightforward installation, this silicone overhead line cover delivers measurable improvements in safety, reliability, and total cost of ownership for utilities and contractors focused on high-voltage line safety and operational efficiency. Choose Volsun for dependable electrical insulation sleeving solutions and innovative self locking line protector designs that meet the demands of today’s overhead power networks