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Insulator

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INSULATOR

As for an insulator of Il Shin Teflon industries Co., Ltd., it is a material for high voltage circuit breakers, and you can see it as a finely-processed teflon component that is used for SF6 gas breaker that opens and closes electric circuits of power cables, distribution lines of more than 66kV-high voltage.
In terms of how to break electric currents of Gas Insulated Switchgear (GIS), we choose contact with and separation from fixed electrodes. Intense ARC, heat and gas occur between those two operating electrodes, and teflon engineering materials are known for tolereance to such conditions.

    Range of use

    from 7.2kV to 800kV

Materials for insulation

  • pure PTFE | PTFE & 0.1% MOS2 OR 0.2% MOS2
  • PTFE & 10% AL2O3
  • PTFE & 20% AL2O3 PTFE & 15~20% GLASS FIBER
  • PTFE & 20%POLYIMIDE
  • GLASS FIBER
  • PTFE & 5% BN

Physical properties

2013. 12.03 KTR 시험결과 기준

Item Specific gravity Tensile strength
(Right-angled direction of molding) 		Elongation rate
(Right-angled direction of molding)		 Hardness
Material               Test method ASTM D638 g/㎤ ASTM D792 ㎫ ASTM D792 % Shore D
Pure PTFE 2.147 45.9 392 60
PTFE & 10% AL2O3 2.214 23.3 436 61
PTFE & 15% GLASS FIBER 2.127 16.5 310 56
PTFE & 20% POLYIMIDE 1.978 27.7 356 57

Production Process