High Temperature Cable Manufacturers India | High Temperature Cable Suppliers India | High Temperature Cable Manufacturers

Corona is an ion and electron discharge set up in gases through which an electric field is impressed. All insulated wires have minute voids at the interface of the wire and the insulation. Under the stress of high voltage gradients, ions are formed in these cavities and accelerated by the field. These Ions bombard the wall of the cavity, breaking down the insulation and enlarging the voids. This process continues until the insulation is penetrated, causing failure
GEEKORE HVCR cable provides extremely higher breakdown voltage and operation voltage with very miniature size and weight. In additional measure of reliability, Corona Resistant PTFE High Voltage cables can be used from cryogenic temperatures through a high temperature of 250 deg. C for short periods of time.

CRPTFE insulation gives designers a high voltage cable with all the merits of standard PTFE including

Chemical Inertness
Thermal stability
Non-flammability
Outstanding retention of physical properties over a wide range of temperatures.
High resistance to electromechanical stress cracking.
10,000 hours minimum life.
Drastically reduced size.

Testing on 100% length

Spark Test : At DC working voltage for 1 second
Dielectric Test : At ( AC working voltage + 10% + 1) KV for 5 minute

Testing on samples

Break down voltage test : Rise voltage at the rate approx. 10 KV/Sec. till sample breaks down.
Progressive stress test : In this test two samples of 1m each are taken from both ends of cable.
Test starts at 1 KV. Step rise 2KV per minute. Voltage progressively increased till sample breaks down.

Application

High Voltage electronic/electrical equipment
Instrument Transformer (CT and PT) (link)
X-ray machines
High Power Transmitters
Ignition systems
Spark Erosion
Lithotripters
Electro-static painting.
High Temperature Luminaries.

HVCR cables