Silicone cables SiHF are heat-resistant for permanent temperature up to +180°C, for short time operation up to +220°C. The good performance of the environmental resistant properties means that silicone cables can be used at temperatures down to -60°C.
Silicone cables are halogen-free cables and are especially suited for installation in power stations. They have also found their uses in the steel producing industries, aviation industry, ship building as well as in ceramic, glass and cement factories.
Due to elastical characteristic of core insulations, these are used as flexible connection cable.
Technical data
| Temperature range | -60°C to +180°C
(up to +220°C for short time) |
| Temperature limit at the conductor | in operation +180°C |
| Nominal voltage | U0/U 300/500 V |
| Test voltage | 2000 V |
| Breakdown voltage | min. 5000 V |
| Insulation resistance | min. 200 MOhm·km |
| Power rating | at ambient temperature up to +145°C to DIN VDE 0100
for higher temperatures valid:
150°C - load value 100%
155°C - load value 91%
160°C - load value 82%
165°C - load value 71%
170°C - load value 58%
175°C - load value 41% |
| Minimum bending radius | flexing 7,5 x cable Ø
fixed installation 4 x cable Ø |
| Radiation resistance | up to 20x106 cJ/kg (up to 20 Mrad) |
Cable structure
| Tinned fine wire copper conductors to DIN VDE 0295 cl. 5, BS 6360 cl. 5 and IEC 60228 cl. 5 |
| Core insulation | silicone |
| Colour coded | according to DIN VDE 0293-308
with green-yellow earth core |
| Cores stranded in layers | with optimal lay length |
| Outer sheath | of silicone |
| Sheath colour | preferably redbrown |
| With meter marking | yes |
Properties
- Advantages:Hardly changes of dielectric strenght and the insulation resistance also at high temperatures, high ignition or flash point, in case of fire, forms an insulating layer of SiO
2.
- Resistant to:High molecular oils, fats from vegetables and animals, alcohols, plasticizers and clophenes, diluted acids, lyes and salt dissolution, oxidation substances, tropical influences and weather, lake water, oxygen and UV.
- Halogen-free:According to VDE 0482 part 267/ DIN EN 50267-2-2/ IEC 60754-2 (equivalent DIN VDE 0472 part 813).
- Behaviour in fire:No flame propagation test according to DIN VDE 0482 part 265-2-1/ EN 50265-2-1/ IEC 60332-1 (equivalent DIN VDE 0472 part 804 test method B).
For laying as a fixed installation only in open or ventilated pipe systems as well as in ducts. Otherwise the mechanical properties of the silicon are reduced by the enclosed air at temperatures exceeding 90°C.