Cooper Medium Voltage Power Cable

This content deals with underground power circuits featuring three-phase AC voltage insulated cable with a rated voltage between 6.6kV and 36kV. These lines are mainly used in a distribution network for electrical power, connecting local substations or small generating units such as wind...

Send InquiryChat Now
Product Details

This content deals with underground power circuits featuring three-phase AC voltage insulated cable with a rated voltage between 6.6kV and 36kV. These lines are mainly used in a distribution network for electrical power, connecting local substations or small generating units such as wind turbines to the main grid supply point, or for connecting plant in industrial processes which require large amounts of power. Medium voltage insulated cables may also be used in conjunction with bare overhead lines in networks.

 

The voltage of a circuit is designated in accordance with the following principles:

Example:

Uo/U (Um) : 19/33 (36)

Uo = 19kV phase to ground voltage

U = 33kV rated phase to phase voltage

Um = 36kV highest permissible voltage of the grid 

Phase-to-ground voltage, designated Uo is the effective value of the voltage between the conductor and the ground or metallic screen

Rated voltage, designated U, is the effective phase to phase voltage.

Maximum voltage, designated U, is the permissible highest voltage for which the equipment is specified. 

In addition, the basic impulse level (BIL) determines the maximum capacity any equipment will withstand if subjected to a lightning strike.

The rated voltage of a medium voltage cable is determined by the thickness of the insulation. Unlike high voltage cables which do not have set values for the insulation thickness, the thickness of the insulation around a conductor in a medium voltage cable is set at specified levels according to international standards 

A medium voltage insulated cable circuit consists of three single core cables or one three core cable with terminations at each end to connect it to the transformer or switchgear in the network.

The terminations may be outdoor, mounted on a pole or indoor type in a screened enclosure. When the length of the circuit exceeds the capacity of a cable drum, joints are used to connect the lengths together.

To ensure the cable is fixed firmly in place under any mechanical or electrical stress, cable cleats will be used to fix it to surfaces.


CONDUCTOR CORE

As copper has a lower electrical resistance than aluminium, it is a more efficient conductor of electrical current and requires smaller cross sections to carry the same amount of power as an aluminium conductor. For example, a copper conductor of 300mm2 cross section can carry approx 670 Amps in a buried installation, yet an aluminium conductor will carry only approx 525 Amps under the same conditions. It would require a larger cross section of 500mm2 to achieve the same rating.

image001

If you are interested in any of our products,please contact us directly.


Factory information: 

Welcome to our factory !

Factory Name

Jiangsu Changcheng Cable Co.,Ltd

Location

Lingtang Town,Yangzhou,Jiangsu ,China

Establishes in

1990,more than   25 years’experience in cable manufacturing

Export office   location

Yunhe Building,Hanjiang Area,Yangzhou,China

Our main   products

Control cable

Instrumentation cable

Power cable

Cable and   electrical wires for installation

High temperature   cable

Flame retardant   and Fire-resistant cable

Special cable

Cable tray

Street lighting

Hot Tags: cooper medium voltage power cable, China, suppliers, manufacturers, factory, wholesale, customized, cheap, low price
Related Products
Inquiry