Medium Voltage Cable Insulation Types

Electrical stress temperatures.

Medium voltage cable insulation types.

Mv cable with xlpe insulation 33 kv paper based paper based insulation is the oldest type of power cable insulation and is still used mainly for high voltage cables. Please note when using the mv cable stop end connectors in cable joints nominally rated in excess of 3 3kv it is essential that the jointing system supplier s instructions for stress relieving and re insulation techniques are strictly adhered this includes resin cast cold shrink and heat shrink types. With its extensive technical and engineering expertise and a state of the art compound facility general cable is committed to using materials with the best overall properties to create the most comprehensive line of industrial power cables to meet your design requirements. 100 133 and 173 levels.

3 c clx 15 kv okoguard copper tape shielded copper conductors 15 kv 133 insulation level 105 c rating type mv 105 type mc hl for cable tray use sun res for direct burial csa ft4 40 c ltgg. History of cable systems 3. Power cable voltage ratings are based on a grounded wye system. The notes refer to three acceptable insulation categories for medium voltage mv cable.

Low voltage cables we specialize in the manufacture and supply of low voltage electric cables flexible or rigid in copper or aluminium with the. It is always good to check your application to make sure the medium voltage cable you are installing meets the temperature rating required. A medium voltage cable is a cable that can be single conductor or multi conductor and has insulation ratings from 2001 v to 35 000 v. 3 phase epr insulated cable for mv figure 4.

These are 100 and 133. Here the insulation thickness is based on the cable voltage rating divided by 1 732. The paper insulation must be impregnated. There are two types of insulation levels with medium voltage cable.

They all pertain to the thickness of the insulation. This is known as the 100 insulation level formerly referred to as a grounded system. Medium voltages cables typically have a 105c rating but that can vary depending on constructions. General cable is recognized as a world class leader in the development and design of medium voltage industrial cables.

Insulation 17 contains voltage between the conductor and ground must be clean must have smooth interfaces with the conductor and insulation shields must be able to operate at the desired. Heprz1 x volt heprz1 al medium voltage cables a complete range of mv cables developed under the most stringent international standards. Type mv cables have a solid dielectric insulation and a conductor shield surrounding the conductor.