ROYALAC 525 MA – Electrical Insulation Varnish for Transformer Impregnation 5 kg

ROYALAC 525MA is an electrical insulation varnish designed for impregnating and protecting electrotechnical and electronic components. The product is used in applications such as transformers, reactive coils, motor stator windings, and other components requiring durable electrical insulation and mechanical reinforcement of windings.

Key technical properties:
Temperature class: H (180°C)
Color: gold
Density at 20°C: approx. 0.965 g/cm3
Viscosity (Ford Cup No. 4 / 20°C): 105 ± 15 s
Solid content: 43 ± 2 %
Drying time at 150°C: approx. 60 min
Dielectric strength (0.02 mm): > 2500 V
Storage stability: up to 18 months

Key user features:
good adhesion to enamelled wires
high moisture resistance
high hardness of the coating after curing
compatibility with insulating materials
designed for impregnating transformers, coils, and motor windings
curing in an oven at approx. 140–150°C