• MDCV process
  
  
  1. Manufacturing of the XLPE Cable is undertaken by employing the MDCV (Mitsubishi Dainichi Continuous Vulcanising) process. The process is the most modern technique which employs a horizontal layout to take care of XLPE cable production with no size or voltage limitations. CCI is the first in the country and in Asia (other than Japan) to set-up such a Plant.
     
     
  2. MDCV process offers a few unique features, viz:
     
     
     1. Cross linking is carried out inside a special Long Land Die under strict process control, employing dry curing at elevated temperature and pressure. This ensures production of void free, homogeneous insulation having excellent electrical characteristic. The plant is fully automated, and all process control are computerised, enabling close monitoring of the critical data/parameters.
        
        
     2. The plant has horizontal layout, as a result of which, the conductor as well as the extruded core can be laid in a straight line without any bending or sagging, thereby permitting stablised manufacture of large sized cables. Cores manufactured by the MDCV process exhibit excellent concentricity, and can be made to close dimensional tolerances.
        
        
     3. Further perfection is achieved by the use of special techniques which constitute the hallmark of the process. The tendency of the conductor and insulation to sag is avoided by the Long Land Die Process. Secondly, the arrangement of the process is such that the method results in 'solid-liquid separation'. The advantage is that the process control within the cross linking zone can be made by raising the temperature within a specified time, in such a manner as to ensure vulcanizing within a shorter time span, thus avoiding subsequent flow of the extruded material and further sagging.
        
        
  3. It has been established through research and fundamental analysis that products manufactured by the MDCV process, exhibit excellent performance characteristics. Detailed work has been carried out in Japan and reference literature indicates that manufacturing of cables with XLPE insulation of 275 kV and above has been successful. Long term reliability tests carried out on such cables as also the field performance under actual usage have proved extremely satisfactory.

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• Aluminium Sheathing

Only company in India to manufacture cables with Corrugated Aluminium Sheath

Improved properties of metallic sheathing : Good mechanical protection & Flexibility

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• CCV Line

  Triple extrusion technique for XLPE

  Vulcanisation and cross linking of semicon for MV XLPE cables

  Better and uniform bonding with insulation

  Avoidance of treeing problems

  Longer life

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• PVC Compounding

  In house plant for making PVC compounds as per application

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• EHV Cable Testing

  CCI has full range of testing facilities to undertake both raw material testing and complete testing of EHV cables in accordance with latest international specification. Apart from the routine test equipment, CCI has set-up ultra-modern facilities to enable long term performance of the equipment installed for the purpose are mentioned below. It will be noted that the equipment capacity has been so selected as to permit full scale testing and evaluation of EHV cables upto 220 kV ratings.

  1. High Voltage and Partial Discharge Equipment
     Capacity : 400 kV Series Resonant Type.
     Features : Double shielded room. Permits graphic recording of PD.
  2. Impulse Equipment
     Capacity : 2500 kV Impulse Generator
     Features : Suitable for Lightning Impulses 1.2/50 Micro Seconds
  3. Heat Cycle Equipment
     Capacity : 30 V, 4000 amps, 120 KVA, Current Transformer.
     Features : Can perform Heat Cycle test as per IEC 840 in combination with High Voltage set.
  4. DC High Voltage Equipment
     Capacity : 400 kV DC Generator
     Features : Suitable for after installation tests on cables upto 220 kV.

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