High Voltage Silicone Self-locking Overhead Line Cover for Wildlife Protection and Insulation Enhancement 35kV Rated

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 customizable

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

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 Ageing180℃, 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. And we have gained some advanced titles such as Jiangsu famous scientific and technical corporation, China new high-tech enterprise etc. have independent intellectual property rights, 88 patents and 97 product certifications

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

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

Certifications

Abroad Exhibition

Las Vagas AAPEX

Moscow Expo

Hannover Messe

Volsun presents the High Voltage Silicone Self-locking Overhead Line Cover for Wildlife Protection and Insulation Enhancement 35kV Rated, a purpose-built solution that combines robust insulation enhancement with proven wildlife protection features to safeguard overhead line safety. Designed for utility operators, renewable energy installers, and grid maintenance teams, this advanced silicone cover addresses critical challenges on power networks by preventing animal-induced outages and improving line resilience against environmental stresses. The product’s focus on wildlife protection and insulation enhancement ensures continuity of service while minimizing maintenance costs and ecological impact

Product Overview and Key Features

The High Voltage Silicone Self-locking Overhead Line Cover for Wildlife Protection and Insulation Enhancement 35kV Rated is engineered from high-performance silicone elastomer formulated by Volsun’s polymer R&D specialists. With a 35kV rated dielectric withstand, this cover delivers exceptional insulation enhancement under diverse field conditions. The self-locking design provides rapid, tool-free installation and secure retention on conductors and hardware, significantly improving overhead line safety and reducing the risk of slippage or displacement during storms or wildlife interaction. The silicone material offers outstanding UV resistance, weather ability, and long-term electrical stability, ensuring that the wildlife protection and insulation enhancement benefits remain effective across the service life of the product

Technical Advantages

- High dielectric performance: The silicone compound provides high breakdown voltage and low dielectric loss, delivering reliable insulation enhancement at the 35kV system level. This reduces partial discharge risk and elevates overhead line safety for both operators and the public

- Self-locking mechanism: Engineered locking geometry and material memory enable a snap-fit that resists vibration and bird or mammal activity, ensuring that the wildlife protection function remains engaged even in high-wind or high-loading scenarios

- Thermal stability and aging resistance: Volsun’s silicone formulation maintains mechanical and electrical properties across a wide temperature range, offering persistent insulation enhancement and protection from UV-induced degradation, ozone, and pollution

- Hydrophobicity and contamination management: The silicone surface repels water and limits contamination accumulation, reducing leakage currents and maintaining insulating performance that underpins overhead line safety

- Lightweight, flexible design: Designed to conform to a range of conductor diameters and accessories, this overhead line cover supports straightforward retrofit and new-install applications while minimizing mechanical loading on poles and structures

- Corrosion and flame resistance: The silicone matrix resists chemical attack and exhibits flame-retardant behavior, contributing to both component longevity and reduced fire risk in the event of fault conditions

Applications and Use Cases

This 35kV rated silicone self-locking cover is suitable for multiple overhead line safety implementations where wildlife protection and insulation enhancement are priorities:

- Wildlife protection along transmission and distribution lines: Installers use the cover to deter birds, squirrels, and other fauna from bridging conductors or contacting energized hardware, thereby preventing outages and reducing wildlife casualties

- Insulation enhancement at critical poles and terminations: The product can be applied where additional insulation is required to raise dielectric clearance and reduce flashover risk due to pollution, salt spray, or moisture ingress

- Renewable energy collection systems: Wind and solar farm interconnects often require enhanced overhead line safety to maintain uptime. The cover’s self-locking feature supports rapid deployment across sprawling arrays

- Route resilience upgrades: Utilities can target known fault hotspots or areas with frequent animal interference for retrofitting with the cover to improve reliability and reduce operational expenditures associated with emergency repairs

- Temporary works and maintenance zones: The cover’s tool-free deployment makes it ideal for temporary insulation enhancement and wildlife protection during line works, commissioning, and live-line operations

Innovation and Design Rationale

Volsun’s development philosophy centers on translating polymer science into field-proven products that enhance overhead line safety while minimizing installation burden. The High Voltage Silicone Self-locking Overhead Line Cover for Wildlife Protection and Insulation Enhancement 35kV Rated exemplifies this approach:

- Material innovation: Leveraging decades of polymer R&D and manufacturing expertise, Volsun optimized silicone crosslink density and filler systems to balance elasticity, puncture resistance, and dielectric performance—critical for dependable insulation enhancement at 35kV

- Form-fit engineering: The cover geometry was iteratively refined to achieve a self-locking action that provides secure retention on varied hardware profiles without compromising flexibility. This ensures wildlife protection is consistently retained even after repeated thermal cycling and mechanical stress

- Field-driven usability: Recognizing the constraints of line crews, the cover prioritizes quick installation, minimal tooling, and intuitive application techniques, enabling teams to execute insulation enhancement and wildlife protection tasks efficiently

- Scalable manufacturing: With Volsun’s two production bases and rigorous quality systems, the product benefits from controlled production processes that deliver uniform electrical and mechanical properties across large deployment programs

Performance and Testing

To validate overhead line safety claims, the 35kV silicone cover undergoes extensive laboratory and field assessments:

- Dielectric testing: High-voltage withstand and partial discharge testing ensure the product’s insulation enhancement meets and exceeds standard thresholds for 35kV-rated components

- Mechanical cycling: Repeated flex and retention tests confirm the longevity of the self-locking action, guaranteeing persistent wildlife protection under operational stresses

- Environmental aging: Accelerated UV, ozone, salt fog, and thermal aging trials demonstrate the cover’s ability to maintain hydrophobicity and electrical performance over service life, supporting long-term overhead line safety objectives

- Field trials: Real-world deployments under diverse climatic and operational conditions verify the cover’s effectiveness in reducing wildlife-related faults and improving system reliability

Installation and Maintenance

The High Voltage Silicone Self-locking Overhead Line Cover for Wildlife Protection and Insulation Enhancement 35kV Rated is designed for ease of use:

- Tool-free application: Snap-on self-locking action enables rapid installation by a single technician, reducing labor time and associated costs

- Adaptable fit: The flexible silicone profile accommodates conductor variations and common accessory geometries without requiring custom fittings

- Low maintenance: Silicone’s hydrophobic and anti-contaminant surface minimizes the need for routine cleaning, while durability reduces replacement frequency

- Inspect and replace: Visual inspections during routine patrols suffice to monitor integrity. If damage occurs, covers can be replaced quickly to restore wildlife protection and insulation enhancement

Compatibility and Customization

Volsun offers OEM/ODM support to tailor the cover to specific utility practices and regional requirements. Custom options include color coding for phase identification, modified locking profiles for unique hardware interfaces, and extended-length variants for specialized insulation enhancement needs. Volsun’s quality management and patent-backed technologies ensure compatibility with global deployment standards and client-specific operational protocols

Sustainability and Safety Impact

Adopting the High Voltage Silicone Self-locking Overhead Line Cover contributes to both environmental stewardship and operational safety. By reducing wildlife electrocutions and associated outages, the cover supports ecological preservation while lowering repair-related emissions and logistics. The enhancement of overhead line safety also translates into fewer emergency interventions, reduced risk to field crews, and improved overall grid resilience

Why Choose Volsun

Founded in 2006, Volsun is a National High-tech Enterprise with deep expertise in polymer materials R&D and manufacturing. With 97 patents and certifications such as IATF 16949 and ISO 9001, Volsun delivers reliable insulation enhancement solutions and wildlife protection products that meet stringent quality and safety standards. Serving thousands of customers in nearly 90 countries, Volsun brings proven manufacturing scale, rigorous testing, and customization capability to projects requiring improved overhead line safety and 35kV-rated performance

The High Voltage Silicone Self-locking Overhead Line Cover for Wildlife Protection and Insulation Enhancement 35kV Rated from Volsun represents a strategic investment in overhead line safety. Combining high-dielectric silicone engineering, a secure self-locking design, and long-term environmental resilience, this cover offers effective wildlife protection and insulation enhancement with straightforward installation and low lifecycle costs. Utilities and infrastructure owners seeking to reduce wildlife-related interruptions, improve system reliability, and bolster safety will find this 35kV silicone cover to be a practical, field-proven solution