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HV 1x500/50 mm2 IEC 60840 38/66 (72.5) kV 31.5 KA for 230kV Substation

Copper core conductor, cross linked polyethylene primary insulation (XPLE), metal core screen, copper shield, galvanized steel wire armoured with red low smoke and fume (LSF) over sheath.
  • CU/XLPE/CWS/AL/HDPE-38/66(72.5)KV
  • Grand Cable
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Applicable Standard

IEC 60228

IEC 60840


Rated Voltage

38/66(72.5) kV


Cable Construction

Conductor

Conductors shall be circular stranded or shaped stranded annealed copper in accordance with IEC 60228. Tinned conductor is also acceptable. 

Conductor Screen

Cable 38/66KV & 132/240kv and above shall have a semi –conducting screen over the conductor.

Primary Insulation

Insulation shall be cross-linked polyethylene, (XLPE) with rated 1KV for 400V, 66KV for 63KV, 240 for 230KV cables.

Insulation Screen

For cables 63KV & 230KV and above, the insulation screen shall consist of semiconducting tape and/or layer of extruded semi conducting compound in combination with a metallic layer.

Filler

Where necessary, to obtain circular form of the cables, suitable interstice material such as jute string, preshaped HDP (high density polyethylene), or polypropylene string shall be used.

Materials shall be low smoke and fume (LSF). Cable shall be substantially compacted so that when fitted with a compression gland will provide a gas seal.

Binder

The laid up cores together with the filler shall be lapped with a suitable binder tape.

Bedding

The bedding shall be a lapped combination of two layers of compounded crepe papers followed by one or more layers of compounded fibrous material.

Armour

The armour shall be single wire galvanized round steel and shall be used for all kinds of cables.

Over sheath

The over sheath shall be extruded red poly vinyl chloride (PVC) for 63KV and 230KV cable and black for low voltage and control cables.


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Founded in 2002 with a registered capital of 308.88 million CNY (equivalent to 44.13 million USD), Grand Cable is able to supply cables up to 500kV for global projects.
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