Insulator Silicone Rubber for Transformer Applications

Insulator Silicone Rubber for Transformers is widely recognized for its excellent dielectric properties, mechanical durability, and ability to withstand high-voltage applications. This material is specially formulated for the unique requirements of transformers and high-voltage electrical systems.

Product Advantages

1. Outstanding Electrical Insulation:Silicone rubber is well-regarded for its high dielectric strength, making it ideal for insulation in transformers and other high-voltage equipment.

2. Mechanical Strength and Durability:Products like 60 Shore A silicone rubber offer excellent mechanical properties, making them suitable for extrusion or molding processes.

3. Heat Resistance:Silicone rubber is resistant to both high and low temperatures, ensuring stability and reliability in extreme operating environments.

4. Compatibility with Modern Electrical Components:Silicone rubber is used in composite polymer insulators, bushings, and transformer cores, indicating its versatility in diverse transformer applications.

5. Environmental Resistance:Silicone rubber is resistant to UV rays, oxidation, and ozone, providing longevity and reliability in outdoor or harsh conditions.

6. Customization Options:Size and performance parameters can be customized for specific transformer or high-voltage equipment needs, such as hollow composite insulators for bushings or pole-mounted transformers.

Type number	HF-230A	HF-230B	HF-230C	HF-270
Shore A	60±3	60±3	60±3	60±3
Duro	180±20	180±20	160±20	180±20
Density(g/cm³)	1.45±0.05	1.45±0.05	1.5±0.05	1.55±0.05
Tensile (MPa)	≥4.5	≥4	≥4	≥4
Elongation(%)	≥270	≥230	≥180	≥300
Compression (%)	≤6	≤6	≤6	≤10
Tear (kN/m)	≥10	≥10	≥8	≥8
Rebound(%)	≥55	≥50	≥50	≥45
Flame Retardant	FV-0	FV-0	FV-1	FV-1
Breakdown (kV/mm)	≥22	≥20	≥15	≥15
Dielectric Constant	≤4.5	≤5	≤5	≤5
Volume Resistivity (Ω·cm)	≥1×10¹⁴	≥1×10¹⁴	≥1×10¹⁴	≥1×10¹⁴
Hydrophobicity	HC1	HC1	/	/

1. Transformer Insulators:Used in core components, such as bushings, windings, and insulating sheaths.

2. High-Voltage Electrical Equipment:Applied in distribution rooms, capacitor banks, and power substations.

3. Dry-Type Power Transformers:Silicone rubber is also utilized in innovative designs for insulated dry-type power transformers.

4. Busbars and Electrical Protection:Silicone rubber serves as an insulating layer for busbars in both high and low voltage electrical setups.

1. Material properties:Silicone rubber should have excellent dielectric strength (≥20 kV/mm) and high volume resistivity (≥1×10^14 Ω·cm) to ensure that the electrical insulation performance meets the use requirements of high-voltage transformers. It has anti-aging, UV and ozone resistance, suitable for outdoor use and long-term stable operation.

2. Manufacturing and processing:Mix silicone rubber with vulcanizer according to the recommended ratio (1.5%) and vulcanize at 170°C for 10 minutes to achieve optimal performance.

3. Testing and verification:The material should pass ROHS and REACH environmental certification and meet environmental and safety standards.

After vulcanization, the product needs to be tested for electrical strength (such as dielectric strength and volume resistivity) and mechanical strength to ensure quality.

4. Application requirements:When used in high-voltage transformers, ensure that the design of silicone rubber parts meets the required physical specifications.

For outdoor environments, silicone rubber insulation parts need regular maintenance to extend their service life.

Q: Is this silicone rubber suitable for transformer insulation applications?

A: Yes, this material is designed for transformers and high-voltage equipment, with excellent dielectric strength and insulation performance to meet demanding application requirements.

Q: Can this material withstand extreme temperatures?

A: Yes, its operating temperature range is -50°C to 250°C, suitable for stable operation in high and low temperature environments.

Q: Is the product environmentally certified?

A: Yes, this silicone rubber complies with ROHS and REACH standards to ensure its environmental protection and user safety.

Q: Can it be used for customized insulation parts?

A: Of course, this material can be customized according to user needs in terms of hardness (50 to 80 Shore A) and other parameters to meet different industrial applications.

Q: What is the service life of silicone rubber?

A: Due to its excellent anti-aging, UV and ozone resistance, its service life can reach more than 10 years under proper maintenance conditions.

WENZHOU HEFENG SILICONE RUBBER CO.,LTD

Insulator Silicone Rubber for Transformer Applications

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