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Medium Voltage Cable for Industrial Use

May 18,2022

As the world increasingly relies on electricity to power homes, businesses, and industries, the demand for reliable and efficient electrical infrastructure grows. This necessitates new solutions that can handle greater loads while still maintaining safety standards. One such solution is a medium voltage cable. MV cables are used to transmit electrical energy at voltages above 5 kV, 15kv, 20kv  up to 36 kV. Unlike low voltage cables, MV cables are not designed to be installed by homeowners or businesses; instead, they are only installed by trained electricians or other qualified individuals.

What is Medium voltage cable?

Medium voltage cables are used in commercial and industrial applications that require high voltage but are still within reach of power lines. These cables are used to supply power to buildings, homes, substations, and other locations. These cables can be used for a variety of purposes, including direct current (DC) power transmission in commercial and industrial facilities.

One type of medium voltage cable is cross-linked polyethylene (XLPE), which is the most common insulation material for this kind of cable. XLPE insulation is chemically inert, which means it does not react with oxygen or water at normal temperatures. XLPE insulation is also a better conductor than other types of insulation materials, such as paper or oil-filled cables.

The second most common material that makes up medium voltage cables is paper insulation. Paper insulation is made from recycled newsprint and can be used in direct burial and underground applications. Oil-filled medium voltage cables have a dielectric material that fills the space between the conductors and the outer jacket of the cable. Oil-filled cables have higher operating voltages than cross-linked polyethylene or paper-insulated cables.

Medium Voltage Cable

Where is Medium voltage cable used?

Medium voltage cables are used in places where extra voltage is needed to power equipment, but standard low-voltage circuits aren’t sufficient. They’re used to transmit high-voltage electricity over long distances and across unshielded wires. While they can be used for direct power transmission, they’re most commonly used to distribute power from a substation where it’s generated to areas that need it.

Medium-voltage cables are used in a wide variety of places. They’re essential in substations that take the electrical energy and transmit it across a large network of small circuits, or even into homes via transformers. Without medium-voltage cables, there would be no way to distribute power when a system doesn’t have access to the high-voltage transmission lines.

Medium-voltage cables are also used in data centers and other areas with large numbers of computers or other electrical devices. The increased amount of current needed by servers creates the need for additional wiring and cables, which can be handled by medium voltage cabling.

What is Type MV cable?

Medium voltage cables are heavy-duty cabling designed to transmit high-voltage electrical currents. They are used in residential and commercial settings where transmission of high-voltage electricity is necessary (e.g., a high-voltage electric company might use these cables to carry electricity from generating facilities to a power plant). There are two main types of MV cable: Type MV-90, which is rated for a maximum conductor temperature of 90ºC, and Type MV-105, which is rated for 105ºC.

Type MV cables are defined as single or 3 core conductor cables rated for 2001 volts up to 35,000 volts. Type MV cables are typically specified as either an MV-90 or an MV-105, with the 90 or 105 designating the maximum conductor temperature in degrees Celsius (ºC).

66kv cable

Type MV cables are constructed with solid conductors that are usually made from aluminum or copper. Solid conductors provide good electrical conduction but they do not provide flexibility (which can be an issue if the cable must be moved or reconfigured) nor protection against fire hazards (due to their lack of shielding). In order to protect against fire hazards and allow for greater flexibility, Type MV cables use stranded wire that has been surrounded by a layer of rubber.

Choose Medium Voltage Cable size for installation

Medium voltage cables are typically required during unplanned or emergent situations. They are usually used to distribute power and provide electricity to property managers, tenants, and utility companies who need the extra power in the event of a blackout or emergency. The medium voltage cable rating is a very versatile piece of equipment due to its ability to handle high amounts of electricity, even when it is exposed to bad weather conditions.

In most cases, medium voltage cables are made from copper. However, there are also some that are made from aluminum or stainless steel. These cables come with a wide range of features and capabilities, but all of them have one thing in common: they can provide a lot of power for different uses for many years.

In addition to using them for distribution, medium voltage cables are also used in most electrical systems because they offer several advantages over lower-voltage ones. For instance, they can carry both power and signals on the same cable. This means that they can be used in telephone systems as well as computer networks, which is not something that you can get when you use low-voltage wires. Because these cables have the ability to carry both power and signals on the same cable at the same time, they can also be easily updated or changed without having to tear down

How does medium voltage cable work?

The electrical grid is the network that distributes electricity throughout a region. Within a power grid, medium-voltage cables serve to supply a region with electrical energy. Although they are integral parts of a power grid, medium-voltage cables are not used for national electricity exchange since they maintain voltage levels between the high-voltage network and the house installation.

To understand how medium-voltage cables work, it’s first helpful to understand what voltage and current are. Voltage refers to the force of electrical energy, whereas current refers to the amount of electric charge flowing in an area at any given moment. The higher the voltage of an electric current, the more electricity it can carry—and that’s why high-voltage lines are used on long-distance electricity transfers, while low-voltage lines are used in households and in other domestic settings.

Medium voltage cables have a relatively higher power transmission capacity than low-voltage cables; however, their voltage is still not enough for long-distance power transmission (for example, from a power plant to a city). Therefore, medium-voltage cables should always be placed directly beneath high-voltage cables like 66kv cable, so when long-distance electricity transfer is necessary, high-voltage lines can be connected from medium-voltage.

Why is medium voltage cable shielded?

The medium voltage cable specificaiotn can be used in a wide range of industrial and commercial electrical applications, including motor control, power supply and lighting. In these applications, the cable is often exposed to dirt and moisture, which can accumulate on the surface of the cable insulation. This accumulation can cause high-voltage stress that can lead to electrical arcing or corona discharge, which reduces the insulation life of the cable.

Shielded medium voltage cables are designed with one or more layers of shielding to reduce this electrical stress and prevent corona discharge. The shield acts as a barrier between the electrical components inside the cable (like copper conductors) and outside elements like moisture, reducing corona formation on the surface of the insulation. Without this protection, the shield would need to be made from a more expensive material like ceramic instead of aluminum. By using an aluminum shield, medium voltage cable is able to keep its price down while still providing the same level of protection for your application.


Medium voltage cables have become widely used in the industry. It’s pollution-free and can effectively transport power, and is also widely used with various fire alarm systems. Many areas still use medium voltage cable to pass signals between security devices, but the implementation of this cable is not always done correctly. High voltage cable is also the main product for zwmvcable.


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