Product Description
Varnished Fiberglass Cloth Premium Electrical Insulation
Varnished Fiberglass Cloth is a high-performance electrical insulation material made from woven fiberglass fabric coated with insulating varnish. It offers excellent dielectric strength, thermal resistance, and mechanical durability, making it ideal for use in motors, transformers, generators, coils, and cables.
With a GSM of 400 32 and a width of 1000 mm, this cloth ensures long-lasting insulation performance, flexibility, and resistance to moisture, oils, and chemicals.
At Harnawa Insulations., we supply varnished fiberglass cloth that meets Class F (155C) and Class H (180C) thermal ratings, available in rolls or cut-to-size formats.
Applications of Varnished Fiberglass Cloth
- Motors & Transformers Slot liners, phase separators, and wrapping insulation
- Generators & Coils Winding and binding insulation for high-voltage equipment
- Electrical Laminations Layer insulation in cables, PCB, and switchgear
- Thermal Insulation High-temperature protection for industrial equipment
- Protective Wrapping Durable covering for wires and insulation kits
Key Benefits
- High dielectric strength & insulation reliability
- Temperature resistance up to 180C (Class H)
- Flexible, durable, and easy to cut or fold
- Resistant to chemicals, oils, and moisture
- Widely used in motors, transformers, and high-voltage equipment
FAQs Varnished Fiberglass Cloth
Q1: What is varnished fiberglass cloth used for?
Ans: It is mainly used for electrical insulation in motors, transformers, generators, coils, and cables.
Q2: What temperature can it withstand?
A2: Standard grades withstand 155C (Class F), and high-grade versions can handle up to 180C (Class H).
Q3: Can it resist oil and moisture?
A3: Yes, the varnish coating provides excellent oil, chemical, and moisture resistance.
Q4: Is it available in rolls or sheets?
A4: It is usually supplied in roll form (1000 mm width), but can also be cut into sheets as per requirement.
Q5: Which industries use varnished fiberglass cloth?
A5: It is widely used in the electrical, electronics, automotive, and power equipment industries.
Superior Electrical InsulationThe varnished fiberglass cloth is engineered to provide robust electrical insulation for motors, transformers, generators, and cables. Its precise construction ensures reliable performance and safety in high-voltage applications, helping to prevent short circuits and electrical breakdowns.
Customizable Size for Unique NeedsAvailable in a standard 1000 mm width, the cloth can be purchased in roll form with custom lengths tailored to project requirements. This flexibility makes it suitable for a wide range of industrial applications, both large-scale and specialized tasks.
Optimized for Thermal StabilityWith a temperature tolerance of 155C180C and low thermal conductivity (~0.035 W/(m.k)), this material is ideal for environments demanding consistent performance under heat stress. The varnish coating enhances its resilience and longevity during continuous operation.
FAQs of Varnished Fiberglass Cloth:
Q: How is varnished fiberglass cloth typically used in electrical applications?
A: Varnished fiberglass cloth is used for slot liners, phase insulation, wrapping, binding, and electrical laminations in motors, transformers, generators, coils, and cables, providing superior electrical isolation and mechanical reinforcement.
Q: What is the process for applying the varnish coating to the fiberglass cloth?
A: The process involves coating woven fiberglass fabric with insulating varnish on one or both sides, then curing it to achieve a smooth, durable surface. This treatment enhances both electrical and thermal properties.
Q: When should I consider choosing this product for my insulation needs?
A: You should select varnished fiberglass cloth when operating equipment requires temperature resistance up to 180C, robust electrical insulation, and flexible roll sizing for custom projects or repairs.
Q: Where is this product manufactured and distributed?
A: Varnished fiberglass cloth is manufactured, distributed, exported, and supplied by various companies in India, making it readily available throughout the country and for overseas markets.
Q: What are the benefits of using varnished fiberglass cloth over other insulation materials?
A: It offers high dielectric strength, excellent flexibility, resistance to heat and chemicals, and customizable sizing. These advantages make it reliable for critical insulation tasks in challenging environments.
Q: How do I determine the correct thickness or grade for my application?
A: Choose the thickness (between 0.150.30 mm) based on voltage, mechanical requirements, and space constraints. Consulting manufacturer specifications or technical support can help select the ideal grade for specific electrical or thermal insulation needs.
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