High Voltage Underground Cable Installation Standards

This document refers to other horizon power documents to provide reference standards for underground cable installation work.

High voltage underground cable installation standards.

Installation of high voltage underground cables april 2018 ver2 mh the width of the working strip is dependent upon the the voltage of the underground cable the number of cables and how many trenches are required. Article 403 clearances updated illustration 5b page 26. Added section on live end. A high voltage cable hv cable is a cable used for electric power transmission at high voltage a cable includes a conductor and insulation cables are considered to be fully insulated.

It may be increased at certain points for example road rail river and canal crossings to accommodate the more. 2 scope this manual has been developed for use by horizon power workers and service providers engaged in the installation of high and low voltage distribution cables on the horizon power electrical networks. This means that they have a full rated insulation system which will consist of insulation semi con layers and a metallic shield. Company offices updated service center information page 5.

General cable s silec brand has been synonymous with maximum service life in high and extra high voltage underground transmission cabling systems up to 500 kv. Underground cables because of the insulation and surrounding environment tend to retain the heat produced in the copper aluminium conductor. Updated 480v to include 480 240v 3 wire. The insulation method depends upon the type of cable used see section on underground cable technologies.

Install a cable marking tape 250mm below the finished ground level covering each cable. Standardisedcable installation depth to minimum cover of750 mm and maximum depth of 1500mm section 14 9 added section 14 10 clarified marker tape and protective cover requirements section 14 11 clarified cable sealing exposed cables and terminated cables requirements section 14 13 14 14 and 14 15. 1 2 10 2020 revision of the cnp service standards book effective date 3 16 2020 1. High voltage aluminum cable clamps view pdf.

High voltage underground transmission cable systems. To withstand the very high voltage. High voltage 345 400kv power cable. Section 300 types of services 301 single phase page 20.

Removed twisted conductor over house. Cables installed in ground shall be laid in a single horizontal layer spaced 450mm apart. High voltage link boxes view pdf.