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CORONA RESISTANT PTFE INSULATED
MINIATURE HIGH VOLTAGE 
WIRES AND CABLES
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HIGHER FLEXIBILITY, RELIABILITY AND PERFORMANCE

SMALLER SIZE, WEIGHT AND COST

  • WORKING VOLTAGES UPTO 22 KV AC OR 50 KV DC WITHIN 7 mm
  • 10,000 HOURS LIFE UNDER CORONA, SHIELDED CONSTRUCTION FOR REDUCED RFI
  • SUITABLE FROM - 200°CTO 260°C
  • FLEXIBLE AND FREE FROM STRESS-CRACKING FAILURES
PTFE Insulated High Voltage Wires

INTRODUCTION

The size and weight of electronic and electrical equipment has drastically reduced over the years, requiring smaller and smaller high voltage interconnections in such professional equipment and devices.  Corona is an ion/electron partial discharge under high electric fields, and is an inevitable consequence of conductor diameter reduction.  The reduced life of insulating materials under corona imposes limitations on miniaturisation and choice of materials.  Conventional HV cables of large sizes, when bent sharply, are even more prone to corona stress (at bend points) and early failure.  CR PTFE provides the answer for such applications.

PTFE HVCR cables are NOT CORONA FREE, but are designed for 10,000 - hour life under corona (shielding will help to reduce corona effects on nearby circuits).  The HVCR cables are a significant advancement in technology and are recommended for "potentially" high risk applications.  These cables offer assured reliability, long life at high temperatures and voltages with significantly smaller diameters and weights.

ADVANTAGES OF CR PTFE

All the advantages of PTFE (except RF properties) are retained in CR PTFE: chemical inertness, Thermal/Physical/Electro-mechanical properties from cryogenic to 260°C, and non-flammability.  Additionally, these CR cables are free from ageing, tracking and mechanical stress-cracking failures.  These designs permit much higher CW and even higher Peak/Impulse power rating.

APPLICATIONS

  • Radar Systems
  • High-power Transmitter Power Supplies
  • Photo-Multiplier, Travelling Wave Tubes
  • Mass Spectrometers
  • Aircraft Photo-Reconnaissance Equipment
  • Infra-Red Detectors
  • Oscilloscopes
  • TV Transformers
  • Laser Systems
  • Low Intensity X-Ray Systems
  • High-Voltage Control/Switch Gear
  • Plastic-film Corona Treatment Equipment
  • Spark Ignition Systems for Furnaces, Heating Systems
  • Aero-Engines, Rockets, Racing Car Engines.

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