Normally in the electrical system most of the high voltage cables are laid under the ground.
High voltage cable laying method.
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.
Installation of cable trench covers cable protection tiles.
After all the cable is meant to.
There are so many parameters to consider while the laying of these cables.
No matter what method is used for lay ing cables must be segregate takin g into account the voltage level and function in order to avoid possible electro magnetic.
Cable shall be tested both before removal from cable drums and on site with a 1 kv insulation tester 5kv for mv cables.
Temperature range the temperature range of the cable is of great importance for both the user and fitter.
Method of installation laying of low voltage cable.
This means that they have a full rated insulation system which will consist of insulation semi con layers and a metallic shield.
Temperature range of the cable bending radius of the cable maximum tension of the cable weight of the cable as well as storage and cutting.
Cables placement will take place mainly above ground in perforated ladder type cable trays.
In a practical situation there are three main cable laying systems are used commonly for laying these under ground cables which are.
Laying the cables must heed the following parameters.
Cable laying shall be started by rotating the drum in a direction recommended and marked side of the cable drum and cables are pulled accordingly.
Insulation resistance of hv cable should be checked by using 5 kv megger after installation and before termination of cables and readings shall be submitted to the consultant.
The outer jacket is extruded hdpe with typically 2mm thickness.
All cables and ducts laid into cable trrench should be over protected by a cable protection cover or tape depending upon the highest voltage cable to be protected within the cable duct typically in the uk the following cable protection tapes and covers are used for lv mv and hv cables.
