What is BS EN 62772 – Tests for composite hollow core station post insulators about?
BS EN 62772 is a European Standard on composite hollow core station post insulators.
It applies to composite hollow core station post insulators consisting of a load-bearing insulating tube (core) made of resin-impregnated fibres an insulating filler material (e.g. solid, liquid, foam, gaseous – pressurized or unpressurized), a housing (outside the insulating tube) made of polymeric material and metal fixing devices at the ends of the insulating tube.
Composite hollow core station post insulators as defined in this standard are intended for general use in substations in both, outdoor and indoor environments, operating with a rated AC voltage greater than 1 000 V and a frequency not greater than 100 Hz or for use in direct current systems with a rated voltage greater than 1 500 V.
All the tests in this BS EN 62772, apart from the thermal-mechanical test, are performed at normal ambient temperature.
Note 1: "Pressurized" means a permanent gas or liquid pressure greater than 0,05 MPa (0,5 bar) gauge. The gas can be dry air or inert gases, for example, sulphur hexafluoride, nitrogen, or a mixture of such gases.
Note 2: “Unpressurized" means a gas or liquid pressure smaller than or equal to 0,05 MPa (0,5 bar) gauge.
Who is BS EN 62772 - Tests for composite hollow core station post insulators for?
BS EN 62772 on composite hollow core station post insulators is relevant to:
- Manufacturers of cable wires
- Manufacturer of Composite hollow core station post insulators
- Substations
- Electrical engineers
Why should you use BS EN 62772- Tests for composite hollow core station post insulators?
Composite hollow core station post insulators consist of an insulating hollow core (tube), bearing the mechanical load protected by a polymeric housing, the load being transmitted to the core by end fittings. The hollow core is filled entirely with an insulating material. The core is made of resin impregnated fibres. They are typically applied as post insulators in substations.
BS EN 62772 provides specifications on identification and marking, environmental condition, guidance on transport, storage, and installation, design tests and type tests.
As a result, you can verify the suitability of the design, materials and manufacturing technology and also verify the main characteristics of a composite hollow core station post insulator, which depend mainly on its shape and size.
The routine tests are helpful to identify and eliminate composite hollow core station post insulators with manufacturing defects.
Overall, BS EN 62772 can help demonstrate the performance and reliability of composite hollow core station post insulators, ensuring its operational efficiency in substation applications.
