Epoxy insulating varnish | for transformers | for electric motors | Class F | 230V | 70kV | 155 °C | 3kg

Technical specifications:

Application: Insulation and impregnation of electrical components

Operating temperature: Up to 155 °C (Class F)

Rated voltage: 230 V

Dielectric breakdown voltage of impregnated parts: ≥ 70 kV

Viscosity (23 ± 1 °C, viscometer No. 4): 25–45 s

Solids content (145 ± 2 °C, 2 h): ≥ 52 %

Film drying time (130 ± 2 °C): ≤ 1 h

Stability in opened container: Viscosity no more than 4× initial

Flexibility test (180°, Ø 3 mm): No cracks, ≥ 30 cycles (180 ± 2 °C)

Shelf life: 12 months (in original sealed container)

Packaging: 3 kg

Features:

Effectively insulates windings and components from moisture, dust, and electrochemical damage

Enhances mechanical resistance to vibration and abrasion

Forms a strong, elastic protective film even at high temperatures

Good penetration into copper and aluminium windings

Stable under prolonged heating up to 155 °C

Fast drying – reduces production or repair time

Use cases:

Electric motor repair and manufacturing

Impregnation of transformer and coil windings

Insulating various high‑voltage components

Can be applied by dipping, brushing or spraying

Suitable for industry, workshops, service centers and individual use

Pros:

Excellent electrical insulation (up to 70 kV)

High‑temperature resistant (Class F – 155 °C)

Good mechanical protection against cracks and vibration

Quick drying (≤ 1 h at 130 °C)

Stable over storage – maintains properties even after opening

Cons:

Requires ventilated area or exhaust during use

Not suitable on damp or dirty surfaces

Recommended to be used quickly after opening due to increasing viscosity

Not suitable for lower classes (< F) or plastics without prior testing

Summary:
Epoxy insulating varnish – a professional choice for anyone seeking a reliable solution for protecting electrical equipment. Whether you're an electrical engineer, installer, or hobbyist, this product ensures safe, efficient, and long-lasting insulation of components. It considerably extends equipment lifespan, reduces failure risk, and improves overall system reliability.