Medium Voltage Cable Insulation Types

Here the insulation thickness is based on the cable voltage rating divided by 1 732.

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. Thus for a 15kv rated cable the thickness is de signed for 15 1 732 8 66kv. Power cable voltage ratings are based on a grounded wye system. There are two types of insulation levels with medium voltage cable.

Heprz1 x volt heprz1 al medium voltage cables a complete range of mv cables developed under the most stringent international standards. 100 rated cables may be used on a system where ground faults are cleared as rapidly as possible via a relay protection scheme. They all pertain to the thickness of the insulation. Medium voltages cables typically have a 105c rating but that can vary depending on constructions.

This is known as the 100 insulation level formerly referred to as a grounded system. The notes refer to three acceptable insulation categories for medium voltage mv cable. Type mv cables have a solid dielectric insulation and a conductor shield surrounding the conductor. 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.

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. Medium voltage cable with xlpe insulation. Low voltage cables we specialize in the manufacture and supply of low voltage electric cables flexible or rigid in copper or aluminium with the. 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.

General cable is recognized as a world class leader in the development and design of medium voltage industrial cables. History of cable systems 3. 3 phase epr insulated cable for mv figure 4. Electrical stress temperatures.

100 133 and 173 levels. The paper insulation must be impregnated. It is always good to check your application to make sure the medium voltage cable you are installing meets the temperature rating required.