Application
Indoor post insulators of cast resin canbe used for all indoor plant, also in thetropics. There are suite table fortemperature from -25 C to +90 C
Construction
Indoor post insulators of cast resin arecylindrical solid insulator. The maindimension and mechanical requirementsare in accordance with IEC 60273
Test
The following test to IEC 60660 isperformed:
Type Test
- Test with rated power-frequencywithstand voltage (dry)
- Test with rated lightning impulsewithstand voltage. Testing minimumfailing loads (nominal loads) forbending, tension and torsion.
Routine Test
- Visual inspection- Dimension inspection
- Testing of conductive connectionof threaded fixing bushes
- Partial discharge extinction voltagetest
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