VDE standard H05V-K H07V-K cable pvc copper wire PVC insulated power cable

  VDE standard H05V-K H07V-K cable pvc copper wire PVC insulated power cable

1 low  voltage  cable power cable

Low voltage (0.6/1 kv)

single core or multi-core

copper or aluminium conductor

pvc inusulation

steel tape armored or galvanized steel wire armored or unarmored

pvc outer sheath

power cable.

2 medium voltage cabel power cable

Voltage grade is up to 35kv,

cross-section area can be up to 1000 sqmm  (copper or aluminiun conductor).

Conductor long-time  operating temperature is 90 degrees.

In short circuit, conductor  highest temperature should be not more than 250 degrees.

1kv-35 kv 

multi-cores

copper or aluminium conductor

xlpe insulation

copper tape or copper wire screen 

galvanized steel wire armored

pvc or pe sheath

power cable

3 high voltage cable power cable

High voltage (35kv~220kv) 

copper or aluminium conductor

xlpe insulation

metal sheath (lead or corrugated aluminium)

hdpe or pvc outer sheath power cable.

Laying conditions: for lyaing  under ground with large different  altitude, be able to bear external machanical force and moderate pulling force.

The power cable's characteristic:

3.1 long time operating temperature for cable conductor is 90 degrees.

3.2 the highest temperature of the conductor in short circuit (no longer than 5 seconds) in not more than 250 degrees,

if a joint is in the cable, the temperature of the tinning welding joint is not more than 120 degrees, compressing joint not more than 150 degrees and electro-welding joint not more than 250 degrees.

3.3 no drop in limited provided there is full mechanical tention when cable is laid. It si forbidden to lay cable in iron-pipe or to fix cable by circling around the cable with iron materials.

3.4 being laid, the minimum temperature of the cable shall not be lower than zero degree. In the case of lower temperature, heating measures shall be taken.

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