How is high voltage cable made?
High-voltage cables are manufactured up to a maximum voltage of 170 kV. They are plastic cables insulated using cross-linked polyethylene (XLPE), representing first-class insulation technology. High-voltage cables are manufactured of aluminium or copper.
How are cables manufactured?
Extrusion. An extrusion machine is used to create copper wire by forcing the metal through a series of extrusion dies to create a particular shape. When creating cables, the copper begins as what’s called an “ingot,” which is basically a big brick of pure copper. The ingots are then stretched into long strands.
What is HV cable?
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. This means that they have a full rated insulation system which will consist of insulation, semi-con layers, and a metallic shield.
What is the difference between HV and LV cables?
The only difference between high voltage and low voltage insulated cables is that the insulation gets thicker on the higher voltage cables for obvious reasons.
Why XLPE is used in cable?
What are the benefits of XLPE? XLPE insulation performs at both high and low temperatures. Due to its structure, XLPE is extremely resistant to abrasion and other wear and tear. It also boasts resistance to high voltage electricity, chemicals, and other hazardous materials.
What is the material of the cable?
Wire and Cable Conductor Materials They are mostly made of metal due to metal’s high conductivity. Some metals, however, are more conductive than others. Aluminum, copper, and high-strength alloys are the main materials you’ll find at the center of your wire and cable.
What are the types of wires?
Types of Wires – There are several essential types of wire that one must know for understanding their place of usage.
- Triplex wires.
- Main feeder wires.
- Panel feed wires.
- Non-metallic sheathed wires.
- Single strand wires.
What is LV MV HV?
This document divides voltages into five classifications. These classifications can be combined into the categories below: High (HV), Extra- High (EHV) & Ultra-High Voltages (UHV) – 115,000 to 1,100,000 VAC. Medium Voltage (MV) – 2,400 to 69,000 VAC. Low Voltage (LV) – 240 to 600 VAC.
What is LV and HV switchgear?
The term LV Switchgear includes low voltage circuit breakers, switches, off load electrical isolators, HRC fuses, earth leakage circuit breaker, miniature circuit breakers (MCB) and molded case circuit breakers (MCCB) etc i.e. all the accessories required to protect the LV system.
What is full form XLPE cable?
XLPE cable stands for cross linked polyethylene cable. It is a hydronic tubing manufactured from polyethylene plastic. XLPE features a 3D molecular bond structure and shape memory characteristics.