Medium Voltage Cable Installation Standards

Medium voltage power cable installation the contractor shall be required to carry out necessary field surveys and acquaint himself with the routing of all other service lines.

Medium voltage cable installation standards. Types of cable tests. 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. As defined by the ieee 400 standard cable tests are defined as. Cable pulling tension during installation the cable pulling tension during installation can be estimated by the following formula.

Added section on live end. Conducted after the cable is installed but before any accessories joints splices and terminations are installed. Medium voltage power cables 20 low voltage power cables 20 low voltage control cables 20 3. Cables should not be installed at ambient temperatures.

Single and three core medium voltage cables according to international standard iec 60502 1 8 3 3 6 kv cables xlpe insulated pvc or pe sheathed xlpe insulated screened pvc or pe sheathed cables for voltages up to and including 36 kv. Correct size and type. Field diagnostic tests can be performed on cable systems during various stages of their operating life. As a specialist mv cable supplier our standard medium voltage cable portfolio contains cable with single and 3 core copper or aluminium conductors with a steel wire armour or aluminium wire armour for mechanical protection and with various application specific materials including polyvinyl chloride pvc polyethylene pe cross linked polyethylene xlpe and ethylene propylene rubber epr.

These tests are intended to detect any manufacturing transport and. For armoured cables pulling tension kg 5kg total cross section of conductors for unarmoured cables. The writers of this document hope that it will be found both useful and interesting and that it will contribute to the increasing reliability of medium voltage networks. High voltage withstand testing 39 time leakage test 41.

Cables shall be laid directly on ground on 10 cm minimum soft sand and ground will be back filled properly avoiding any aggregate with sharp edges for damaging the cable. The text and pictures below highlight the more important aspects of the installation of cable accessories from the point of view of their effect on system reliability. Insulated bundled overhead conductors torsade 12 20 24 kv xlpe technical information formulae.