What is BS EN 60371-3-5 – Insulating materials on Mica about?
BS EN 60371-3-5 is a European standard that discusses the individual materials for insulating materials based on mica. Mica is used in a range of products because of its exceptional properties as an insulator and dielectric. Mica can support an electrostatic field whilst expending minimal heat energy.
BS EN 60371-3-5 gives requirements for electrical insulating materials made by combining mica paper with glass fabric and bonding them together with a small amount of epoxy resin. The material is supplied in a flexible state and is designed for use in conjunction with vacuum pressure impregnation (VPI) with compatible impregnates. The final cured properties will be primarily dependent on the VPI resin used.
Two bond contents are specified:
- Low bond with a resin content of (8 ± 3) %
- Medium bond with a resin content of (16 ± 3) %.
Materials that conform to this specification meet established levels of performance.
However, the selection of a material by a user for a specific application should be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone.
Who is BS EN 60371-3-5 – Insulating materials on Mica for?
BS EN 60371-3-5 on insulating materials based on mica applies to:
- Manufacturer of mica insulating products
- Quality testing personnel
- Electrical engineers
Why should you use BS EN 60371-3-5 – Insulating materials on Mica?
Mica sheets are used to provide structure for heating wire (such as in Kanthal or Nichrome) in heating elements and can withstand up to 900 °C (1,650 °F). Glass fabric is a continuous filament glass fibre made from E glass. Epoxy resin is a system that may be used that enables the material to meet the requirements of this specification. Vacuum Pressure Impregnation (V.P.I) is a process by which a fully wound electric apparatus stator or rotor is completely submerged in a Resin.
BS EN 60371-3-5 series is a specification for individual materials that deal with the insulating materials built up from mica splitting or mica paper with or without reinforcement and with mica paper in its pure state for use in electrical equipment.
BS EN 60371-3-5 provides you with the requirements for materials which is capable of being unrolled continuously without damage, and the force required to unroll the material is substantially uniform. The material is supplied non-interleaved which helps you in manufacturing the insulating materials based on mica in a standardized manner.
With obedience and compliance to BS EN 60371-3-5, you can efficiently manufacture high-quality insulating materials for mica.
