What is BS EN 4708-101 - Polyolefin sleevings about ?
BS EN 4708-101 is an European standard for aerospace series that provides guidance on the polyolefin sleevings.
BS EN 4708-101 is a European Standard that specifies the required characteristics for four types of heat-shrinkable polyolefin sleevings for use in aircraft electrical systems at operating temperatures between -55 °C to 135 °C.
- Type A: very flexible, flame retarded, shrink ratio 2:1 – This sleeving has very good flexibility, is flame retarded and well shrink at low temperatures. It is suitable where sensitive components and delicate wiring need protection from excessive heat during shrinking
- Type B: Flexible, flame retarded, shrink ratio 2:1, 3:1, and 4:1 - This sleeving is flexible and flame retarded. It is suitable for general purposes and is available with high shrink ratios
- Type C: Flexible, not flame retarded, shrink ratio 2:1 and 3:1 - This sleeving is flexible and not flame retarded and is available in two shrink ratios
- Type D: Semi-rigid, flame retarded, shrink ratio 2:1 - This sleeving is semi-rigid and flame retarded. It is suitable where strain relief and mechanical support are required
These sleevings are normally supplied with internal diameters up to 102 mm for shrink ratios of 2:1 and 4:1 and up to 39 mm for shrink ratios of 3:1 and in the following colours for type B, black, brown, red, yellow, green, blue, orange, violet, grey, white and green/yellow. Types A and D are black only. Type C is transparent, is not flame retarded and does not meet the flammability requirements of EN 4708-001.
Sizes or colours other than those specifically listed in this standard may be available. These items shall be considered to comply with this standard if they comply with the property requirements listed in Tables 5, 6 and 7 except for dimensions and mass.
Who is BS EN 4708-101 - Polyolefin sleevings for ?
BS EN 4708-101 on polyolefin sleevings is useful for:
- Aerospace avionic and fibre optic technology
- Aircraft electrical manufacturers
- Design engineers for polyolefin sleeves
- Quality control personnel for polyolefin sleeves
- Manufacturers of heat-shrinkable polyolefin sleeving
- Electrical installation companies
- Thermal industry
Why should you use BS EN 4708-101 - Polyolefin sleevings ?
Insulating Sleeving is an extremely high temperature resistant sleeve commonly used as thermal protection that works by creating a protective seal around an electrical wire.
BS EN 4708-101 covers a type of sleeving which come in a significantly large range of sizes and wall thicknesses and provides a guide to the range of sizes available.
BS EN 4708-101 is beneficial as they are used in electrical applications to insulate high voltage current from surrounding areas which deals with flexible insulating sleeving for electrical purposes.
As a manufacturer, you can use BS EN 4708-101 guidance in the production of electrical applications, wirings, etc.
Adopting BS EN 4708-101 requirements can ensure the polyolefin sleeving provides excellent electrical insulation and incidents of splitting and product failure, are minimized. If you are a manufacturer of polyolefin sleeving, adopting standardized practices can enhance the reliability and credibility of your products.
By using BS EN 4708-101, you can manufacture the best quality sleeves including all the qualities that make it best for use in aircraft.