Underground mining cable Ultimate guide
Chapter 1: Introduction
SSG manufactures underground cables for application in mining equipment. We also manufacture other related products to mining cables.
We have been in the manufacturing industry for more than 30 years.
At SSG, we specialize in the manufacture of underground mining cable and other cable types.
In China, we are the leading supplier of underground mining cable.
Over the years we have gained certifications of good conduct and quality production of cables.
Our company is ISO certified and we have been able to meet the British international standards.
Our cable has also been approved by the mine safety and health administration.
Our cables are designed to withstand harsh mining conditions and environments.
Our cables are available in different varieties depending on the customer’s specifications.
We have a team of qualified engineers in mining for checking the quality of our cable. At SSG we ensure total quality control of our underground mining cables.
We work closely with mining factories and equipment for checking any troubleshoot with their cable.
We also help in fixing the cables in mining machines or any mining equipment. We also provide ground cable monitors for monitoring the ground connection of the cable.
Our underground mining cable can be used in any mining environment regardless of the region. We also offer installation services of the cable to your machine. Make your order now and we will deliver.
You can also send us your machine details and we will deliver the right cable for your machine.
Safety precautions on how to handle the cable are also provided. Get yourself a high-quality underground mining cable from SSG at a cost-effective price.
For over the years, our cable has been recognized by customers from China, U.S.A, America, Middle East, etc.
Recently we have been able to get new customers from mining countries in Africa like South Africa, Congo, Kenya, etc.
Our customer’s services are available 24/7 to answer any question or receive any orders.
Our delivery services are incredible. We do deliver the package to your preferred destination within 2 to 3 days after an order is made.
Our manufacturing systems are equipped with the latest state of art modern to offer quality cables at a competitive price. We design and manufacture a wide array of underground mining cables.
Once you purchase any of our underground mining cables, you can return it in the event of default. We use the latest multi-level tested raw materials to manufacture our underground mining cable.
We are baked by technologically advanced infrastructure and a team of highly trained engineers having experience in the manufacture of underground mining cable.
Today, SSG underground mining cables continue to reduce downtime and ensure performance while meeting the most severe and extreme demands.
We have customized underground mining cable color solutions. We can produce mining cable according to the customers’ demands.
You can also go through our ultimate guide for more information about mining cable. Our ultimate guide is used as a reference by most mining industries in the selection of the right cable.
What is an underground mining cable?
Before you use an underground mining cable you need to understand exactly what it is.
From the word underground, you can see it’s a cable designed to withstand long immersion or exposure to the underground environment.
This cable is designed for direct burial to the underground of a mine or tunnel. Our mining cable is designed to withstand extreme temperatures, inversion dust, and vibration.
Mining cable is used for high mechanical stress and can withstand simultaneous tensile and torsional stress. Our mining cables work best in mining grounds with frequent winding and unwinding conditions.
Our cable is designed to withstand both high and low temperatures. Our underground mining cable is not affected by any climatic conditions. Some mining ground might be harsh, rocky and very hard to extract a mineral.
The underground mining cable has a carrying capacity of additional currents higher than 50% in PVC and other rubber isolated cables.
Underground mine systems are somehow complicated than those for surface hence the cable must be carefully selected.
Because of the nature of the mine and the distribution of the underground requirements of voltage must be somehow radial.
The distribution of electricity to the mining industry is a distinctive area in both mining and electrical engineering. Some of the minerals which are mined using our cable include coal, gold, silver, diamond, etc.
All underground mining cables must be rugged, portable and specifically designed for installation in limited spaces. Underground mining cable is fed to the ground either through a shaft borehole or a fresh air entry.
The cable terminates in disconnect switches within 500 fits of the point of power entry and the mineral. The functions of the switches are to enable removal of underground power in case of emergency.
After manufacture of the underground mining cable, we do an inspection to ascertain the cable meets the following criteria;
- Adequate interrupting ability
- Reliability and simplicity
- Safety to personal and property use
- Resistance to chemical solvents
- It does not stick to other materials like silicone as defined by standards.
- The working temperature should be within a range of -60˚C and 180˚C
- It should have high resistance to humidity, radiation, ultraviolet rays, ozone, oxygen, corrosion, and pressure.
- It should have extremely high electrical resistance.
Welcome to SSG, and get yourself the best cable that can withstand any underground mining conditions.
What are the components of underground mining cable?
Conductors
The flexibility and strength of an underground mining cable are determined by the nature of the conductor used.
Conductors used in our underground mining cable are in conformance with the British international standards.
They usually employ tinned annealed copper wires stranded. The copper wires provide optimum flexibility. The flexibility is influenced by the number of individual wires for a given size, lay length of bunches and strands.
Also, the geometric arrangement of the stands influences the flexibility of the copper wires. We also have special designs that are designed to suit a particular application.
This special application includes cables for heavy-duty reeling or flexing. The use of specially designed conductors provides the underground mine cable with a good performance effect.
Core assembly length.
This is the vital factor that affects most underground mine cables’ lifespan when the cable is subjected to repeated reeling. A ration of cable lay length to pitch circle diameter is commonly used to specify lay lengths suited to various applications.
For moderate reeling cable this value should be less than 12.5 and trailing cable should be less than 17.
Insulation
Our cables are insulated using cross-linked polyethylene, ethylene-propylene, and terpolymer. This insulation makes our cable to be flexible and offer excellent thermal durability and electrical characteristics.
Insulation materials are chosen for optimum dielectric characteristics and resistance to deterioration. The material should highly resist oxidation, salts and copper compounds.
Inert filters are used for maximum electrical stability and low moisture absorption.
Pilot
The resistance between mining equipment and earth is usually high and dangerous voltage can be present. To prevent hazards from shock, ground fault currents are controlled by various systems.
To ensure the integrity of this safety circuit a small independent current may be passed through a pilot conductor. From the pilot conductor, it is passed to the load center and return through the earth conductor.
If this current is interrupted through a breakage, then the circuit breaker will automatically trip and remove power from the cable.
British mining regulatory authority requires the inclusion of an extensible central pilot conductor. This extensible pilot conductor is used for monitoring circuit integrity. This is specially designed and manufactured to restrict extensibility in service.
The cores for each underground mining cable must be electrically symmetrical for added safety.
Screens
The bending of conductors under tension accelerates the breakage of individual wires.
Partial failure of conductors can lead to wire ends that penetrate through the insulation. Metallic screens over the power cores are provided to ground such faults through the earth.
The screens are also used to relieve nonuniform electrical stress and provide a uniform capacitance to the ground. Screening is achieved by the combination of a helically applied layer of wire and a tinned copper wire braid.
Our cables are designed to have a fire propagation resistant semi conductive screens.
Sheath
The role of the cable sheath is to protect the underlying core assembly from mechanical or environmental damage. Some of the synthetic polymers used in sheaths at SSG include polychloroprene, chlorinated polyethylene, etc.
They are commonly filled with other materials to enhance sheath performance. A properly formulated sheathing compound is essential for high a high-performance reeling cable. The higher the tensile strength the stronger the material when stretched.
As the material gets hotter tensile strength reduces with a consequent reduction in tear and resistance. As cables age they become brittle and elongation may be reduced.
At SSG, we always work towards quality cables that are safe to handle by human beings.
We understand the risks involved in mining and the tremendous importance of underground mining cable. Every product you find in our inventory complies with the international standards of cable manufacture.
The cables have been tested for durability and have been found to perform well under the extreme conditions of underground and open-cut mines. Rest assured we have been powering mining equipment all over the world for decades and know what it takes.
Chapter 2: What are the types of underground mining cable?
We have a variety of underground mining cables available in our inventory. Send us your mining details or environments and leave the rest to us. The following are some of the mining cables we manufacture;
- Type 209 1.1-11 Kv underground mining cable.
This type of underground mining cable is composite screened for general use in the mining industry. It is used for the feeder connection between the transformer and gate end box. It can also be used to connect feeder cable to crushers, pumps, and fans.
This cable can also be used in surface mining. It is flame-retardant and operates under a temperature of +90˚C and -25˚C. It is flexible in nature and offers a high degree of resistance in the presence of chemical exposure.
It has a very heavy mechanical impact.
It can work best under any weather exposure without breaking or reacting. It has a Composite screen of tinned annealed copper wire and polyester yarn. This cable is available in 4 core colors that are red, white blue and braid traces.
The Pilot is Single and it is found in the center of the underground mining cable.
This cable has a maximum DC resistance of 5.5 Ω/100 m for power cores to 35 mm2.
The Sheath is made up of heavy-duty HD-85-PCP. In case you need sheath reinforcement, it is available upon request.
The core is made of metal tinned copper. The cable also has a conductor separator tape. It can be installed in any mining equipment.
If you are in need of this type of cable for your project let us know.
- Type 210 1.1 kV underground mining cable.
This is basically a composite screened cable for handheld equipment. It is primarily used for handheld bring machines. The Core is made up of a metallic tinned copper and a central pilot
The Insulation type used in the manufacture of the cable is EPR.
It has a composite screen made of annealed copper wire and polyester yam.
It is available in 4 basic Core colors that are red, white, blue braid tracers. Pilot resistance is ≤ 5.5 Ω/100 m.
The Sheath is made of heavy-duty HD-85-PCP. It is flame retardant. It shows high resistance in exposure to chemicals, radiations, and mechanical stress.
Type 240 1.1-11 kV Underground mining cable
This is a basically a composite screened cable for general use in underground mining. This cable is used extensively for the feeder connection between transformer and gate end box.
It can also be used with feeder cables connected to pumps.
This type of cable has 3 pilots hence it can be used in long runs. The number of pilots also makes the cable to be used without compromising pilot control protection system resistance limitations.
For applications requiring a high degree of flexibility this type of cable would be more appropriate.
This cable has been approved by international cable standards to be appropriate for use in underground mining.
It shows a high degree of resistance in the presence of chemical mechanical water and fire exposure.
The core is made of tinned copper hence making the cable flexible. We have sheath reinforcement available upon request. It has a composite screen of tinned annealed copper wire and polyester yarn.
Type 241 1.1-11 kV underground mining cable.
This is a semiconductive screened cable for general use in underground mining. It issued for continuous miners or feeder cables to pump.
It is commonly used for monorails supplying DCBs and long walls.
The semiconductive screen makes the cable to be more flexible. It is built by a metal tinned copper, three earth cores plus a central pilot.
The earth’s core is made of semiconductive elastomer covered with flexible piles of earth located in the interstices. The sheath is made of an open wave reinforcement under heavy-duty HD-85-PCP.
If you need this type of cable kindly let us know.
Other types of underground mining cables we have to include;
| Type 245SF 1.1-3.3 kV |
| Type 241SF 1.1-11 kV |
| Type 275 1.1 kV |
These cables have been approved by the mine safety and health administration. It has been rated by the insulated engineer’s cable association.
The cables have a flat construction for providing maximum resistance to damage from crushing and run over. They have a d shaped insulation to prevent conductors from shifting under the jacket.
It has excellent physical toughness and heat stability. They are normally flexible for easy handling. They generally have excellent thermal stability and physical property over a broad temperature range.
Chapter 3: What are the properties of underground mining cable?
We manufacture underground mining cable with the following properties;
| Flexibility- they are flexible in nature to allow easy handling |
| They have a high dielectric strength- this stress is essential in underground mining. |
| They portray excellent thermal stability and physical properties over a broad temperature range. |
| They display excellent heat, chemical, and radiation resistance. |
| They don’t react with any flame |
We manufacture high voltage underground mining cable with the best properties. For more information about our cable properties visit our company website or send us an email.
For applications that go out beyond standard solution provided we recommend that you fill out our questionnaire of underground mining cable.
All our cables are suitable for outdoor applications and installation in dryland wet places or open air.
Chapter 4: What are the uses of underground mining cable?
Most of our underground mining cables rare used in underground applications.
They can also be used feeder cables for coal cutters. If you are doing any coal cutting project, you can conduct us to advise about the perfect cable. The semi-conductive screen makes our cable to be used in underground mines.
This cable can also be used as a feeder cable to transformers.
Type W cable is used for the supply of power to the mining environment. The cable is designed in a way that can excavate hard minerals mainly those containing metal components.
The cable has been used by customers and industries in excavating minerals like gold, silver, copper, iron, and nickel among others. For any project about excavating ores from the ground, you can conduct us to select the best cable for you.
Chapter 5: How do you select cable for underground mining?
The following are some of the considerations you should make when selecting cable for underground mining;
- The conductor size- the conductor size of an underground mining cable must be sufficient to keep losses sufficiently low. The diameter of the conductor affects the strength of the electric field. This means a solid conductor will have less dielectric stress than a stranded conductor. If you increase the number of strands it will reduce losses if the current is of high frequency.
- The insulation material- the insulation around the conductor might be slightly conductive. This is done to reduce electric stress by creating a larger diameter of the conducting surface. There are many insulating types available with us and their selection depends on factors such as flexibility, frequency, price, and AC or DC voltage. At higher voltages there here might be a combination of layers of the insulation to manage the stress.
- Shielding- underground mining cables creates a field around the conductor that is influenced by the cable insulation and everything that is in proximity to it. If shielding is used then the field is contained between the \ conductor and the shield. You can calculate this using the dielectric constant and the thickness of the cable insulation.
- Also, use insulation with a low dielectric constant. Also, an underground mining cable should have a metallic screening to prevent radiated electromagnet field.
Chapter 6: What is SHD Cable in underground mining?
We have designed a power cable for heavy-duty mining equipment. It is a type of high voltage distribution cable in underground mines. This is one of the products which is sold alongside the main underground mining cable.
For more details about this SHD cable visit our website. Instead of buying an extra cable for high voltage we offer it here at SSG.
Chapter 7: How do you test an underground mining cable?
We perform the following tests to ensure that what we have manufactured is exactly an underground mining cable;
- On-site risk assessment- any risk associated with underground mining is conducted at the place of installation. Underground mining cannot just be done by any cable.
- Preliminary steps and safety management- in this you are advised to use correct methods to positively identify the cable to be tested. Also, ensure the associated gear operationally
- Check and record cable identification
- You need to verify the sheath integrity
- Perform a core insulation test to determine the insulation resistance of the under round mining cable.
Chapter 8: Why do business with SSG?
You might ask yourself why you should choose cables from us, and not from somewhere else. First of all, we have been producing cables for over 30 years now so we have enough experience in that.
Second of all, we combine this local knowledge with the strength of being a global market leader.
This means we have the muscles to innovate and customize our solutions to perfectly match your needs.
In addition, we co-operate with universities, scientific institutions and, perhaps most importantly with you.
Your satisfaction is our livelihood.
Based on your needs and your feedback we constantly improve to make sure our offer fits the bill. No matter what kind of cable you need, we have it, and if not, we will invent it.
That is why doing business with us pays off!
Chapter 9: Underground mining cable at SSG Cable Inc. R&D Co., Ltd
R&D involves securing core technologies for customer value maximization. We aim at securing future growth engines by inventing mining cable which can operate in both underground and ground mining.
Special cable No.4 workshop, it covers 1400,000.00 sqm, adopting most advanced wire and cable equipment from Germany and Finland, annually sales avenue over 1.6billion US$. SSG is the largest XLPE cable manufacturer in China. Supplying best special cable includes marine cable, mining cable, nuclear cable, wind cable, offshore cable, rubber cable etc.