Flexible Electrical Conductive Materials
Flexible electrically conductive materials from PAR are used in a variety of high voltage equipment to increase dependability and increase service life. They are manufactured by impregnating a range of base materials with electrically conducting binding agents in various concentrations. As a result, virtually any desired surface resistance can be obtained.
Product groups within this range are as follows:
| TYPE EWR |
| The EWR range of flexible electrically conductive materials are intended for corona protection and slot filling in high voltage machines rated at 155°C (Class F). They have a resistance range from 400 - 20,000Ω/. The EWR range consists of a polyester tangled non-woven base material, giving the same mechanical strength in all directions. |
| TYPE ELR |
| The ELR range of flexible electrically conductive materials are intended for corona protection in high voltage machines rated at 155°C (Class F). They have a resistance range from 150 - 1,500Ω/. The ELR range consists of a polyester longitudinal non-woven base material, giving greater same strength in the longitudinal than in the transverse direction. |
| TYPE EFR |
| The EFR range of flexible electrically conductive materials are intended for corona protection in high voltage machines rated at 155°C (Class F). They have a resistance range from 400 - 5,000Ω/. The EFR range consists of a polyester non-woven thread-reinforced base material, giving high mechanical strength in the longitudinal or winding direction. The polyester threads can be shrunk if high temperatures are applied. |
| TYPE ESR |
| The ESR range of flexible electrically conductive materials are intended for potential equalisation in measuring transformers rated at 155°C (Class F). They have a resistance range from 400 - 1,000Ω/. The ESR range consists of a polyester stretch non-woven base material, giving particularly high stretching capacity in the transverse direction. |
| TYPE GWR |
| The GWR range of flexible electrically conductive materials are intended for corona protection and slot filling in high voltage machines rated at 155°C (Class F). They have a resistance of 1,000Ω/. The GWR range consists of a glass tangled non-woven base material, giving the same mechanical strength in all directions. |
| TYPE NWR |
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The NWR range of flexible electrically conductive materials are intended for corona protection in high voltage machines rated at 155°C (Class F). They have a resistance OF 1,000Ω/. The NWR range consists of a Nomex® tangled non-woven base material, giving the same mechanical strength in all directions. |
