11KV Cable

  • According to IEC, GB, BS
  • Flame Retardant & LSZH Cable
  • Voltage: 8.7/15 KV
  • Large stock  cables with different sizes

The conductor of 11kv cable is copper or aluminum, usually single-core or 3-core. The armor is made of steel wire and steel tape.

Conductor: Copper Or Aluminum 

Conductor screen: semiconducting material

Insulation: XLPE

Insulation screen: semiconducting a material + copper tape

Amour: STA or SWA

Outer Sheath: PVC

Color of outer sheath: Black

Medium Voltage Cable data sheet

Table of Contents

11KV Cable: A Reliable Product for Power Delivery

11kv cable is an essential and indispensable part of the modern power system. Its application is extensive, especially in long-distance power transmission and urban and rural power grid construction. It plays an irreplaceable role in promoting the economic development of a country or region. Bs6622  11kv cable belongs to medium voltage cable.

With the continuous development of the power industry and the continuous improvement of people’s living standards, the demand for 11kv power cable is also increasing. To meet the market’s needs, many enterprises have begun to produce 11kv power cables. Let’s start by learning about the 11kv cables.

1. What is 11kv Cable?

11kv cable is a power cable capable to deliver 11 thousand volts. These cables are available with copper or aluminum conductors and meet BS and IEC standards. These wires are designed to be buried directly in the ground. They are armored to provide solid mechanical protection (aluminum core wire armor on a single cable strand, 3 steel core wires on a multicore). When it comes to 11KV cable specification, it must have excellent conductivity, insulation, and armor to protect against fire, moisture, abrasion, rodents, and other external factors.

It is mainly used for medium voltage power transmission the cables are usually used with a 10kv cable,15 kV cable, or hv cable. In addition, it can also be used in power plants, substations, high-rise buildings, ships, and other places where the voltage is required to be very high. Some other common types include: 11kv single core cable, 3 core 11kv cable, XLPE 11kv cable, 11KV underground cable. Both are mv cables.

2.What is the 11kv Cable Size?

There are two ways to measure it when it comes to 11kv copper cable size. One is the diameter of the conductor, and the other is the cross-sectional area of the conductor. The cross-sectional area of the conductor is usually expressed in square millimeters (mm2) or sqmm.

size of 11kv cable

11kv cable types have a specific conductor size. For example, the most common type of 11 kV cable is a 50sqmm. This cable type has a cross-sectional area of 50 sqmm and is usually used in power distribution lines. Apart from that, there are also other sizes of 11kv cable, such as 25mm2 cable and 95mm2 cable.

3. What is the Price For 11kv cable?

Price is always an essential factor to consider when choosing cable 11kv. 11 kV cable price varies depending on the cable’s type, size, and brand. The factors that influence the price of 11kv cable are as follows:

Copper Price:

The raw material price is one of the most important factors that influence the price of 11kv cable. The price of the cable is determined by the cost of copper which means with the increase or decrease in copper price the cable price will also change accordingly. We don’t have a specific price; instead, we have a suggested retail price. 

The mv cable cost per meter is determined by the square number of its total area, divided by the usable length. For example, a 240mm2 cable is more expensive than a 185mm2 cable. If you want to know 11kv 3 core XLPE cable price, you are welcome to contact ZW cable. At any moment, we may update the price.

Size of Cable:

Size is another crucial factor that affects the price of 11kv cable. The larger the size of the cable, the higher the price will be. For example, 185 sq mm cable price is usually higher than 70 sq mm cable price. However, the price difference is not always significant. It all depends on the market situation.

Brand of Cable:

The brand is also an essential factor that affects the price of 11kv cable. The price of a branded cable is usually higher than that of an unbranded cable. This is because branded cables are high-quality materials and have better performance than unbranded cables. In addition, branded cables also come with a warranty, which gives you peace of mind.

ZW cable is a famous 11kv single core cable manufacturer with its factory producing all kinds of 11kv cables. We have a wide range of products that can meet your different needs. We also have a professional team that can provide you with the best service. Our competitive prices, high-quality products, and excellent service have won the trust of our customers.

4. How Do I Calculate 11kv Cable Size?

To calculate the required size of the 11kv cable, there are five steps you need to follow:

Collecting Data:

The first step is to collect data such as the diameter of the conductor, the length of the conductor, and the number of conductors. Some other factors that include in collecting data are:

  • Single Or Three phase
  • Power Factor
  • Load Types
  • Cable installation condition
  • Cable construction material

Current Carrying Capacity:

When current carrying capacity is determined, the voltage drop can be minimized. The current carrying capacity of a conductor is determined by its cross-sectional area. When current passes through the conductor, heat is produced as an outcome of resistive losses. So greater the cross-sectional area, the less will be the heat resistive loss.

Voltage Drop:

The next step is to calculate the voltage drop. Voltage drop is an essential factor to consider when choosing an 11kv cable. It should be noted that the voltage drop should be within the specified limits. The following formula can be used for measuring voltage drop:


Determining Conditions for Short Circuit:

After the voltage drop is calculated, the next step is to determine the conditions for the short circuit. This includes the duration of the short circuit and the maximum current that can flow through the conductor.

To determine a minimal size, we utilize the following equation.

                                     A = √(i2t) / k

In the above formula:

  • A, stands for minimum size of the cable
  • I, shows short circuit current
  • t, is time for short circuit
  • k stands for short circuit temperature constant

Earth Fault Loop Impedance:

Another critical factor to consider is earth fault loop impedance. This is the impedance between the conductor and the earthing system. It is important to note that the earth fault loop impedance should be within the specified limits. Use the following formula:

                                          IA = V0 / Z0

After determining all the factors, the next step is to choose the appropriate 11kv cable size. There are a variety of 11kv cables available in the market, and it is vital to choose the one that best suits your needs. A professional 11kv cable manufacturer can help you select the suitable 11kv wire for your application.                                      

5. Conclusion

In a nutshell, the 11kv cable is an essential component in the electrical system. Each type of 11kv power cable has its unique features and benefits. It is crucial to choose a suitable 11kv cable for your application. With a bit of research, you can find a reputable cable manufacturer who can provide you with the best products and services. ZW cable is a trustworthy 11kv cable supplier that can provide you with high-quality products and services. Contact us today for all your 11kv cable needs!