Mine Electrification: Building the Infrastructure for More Electric Mining Operations

Carroll Technologies Group supports mines with this critical infrastructure, together with the installation, repair and technical expertise needed to maintain it throughout its working life.

Mine electrification is often discussed in terms of battery-electric haul trucks, loaders and drilling equipment. While these machines may be the most visible part of the transition, an electric fleet can only perform as well as the infrastructure behind it.

Mines need sufficient electrical capacity, mine-duty distribution equipment, reliable connectors, motor controls, circuit protection, ground monitoring, communications and safety systems. Each part must be appropriate for the mine environment and capable of supporting equipment as operating areas and power requirements change.

Carroll Technologies Group does not supply the large electric mining fleets themselves. Its role is to provide and support many of the systems around them, helping mines deliver, connect, control, monitor and protect electrical power across underground and surface operations.

What Is Mine Electrification?

Mine electrification means increasing the use of electrically powered equipment and systems while reducing reliance on diesel and other fossil fuels. Depending on the operation, this can include battery-electric vehicles, electric drills, trolley-assist haulage, electric pumps and ventilation equipment, conveyors, processing machinery and charging infrastructure.

The transition may be introduced gradually. A mine might replace selected vehicles, electrify a new working area or upgrade fixed equipment before considering wider fleet changes. Whatever the approach, the supporting electrical network must be reviewed at the same time.

Why Are Mines Moving Toward Electrification?

The potential benefits vary by site, but mines are examining electrification as a way to reduce fuel use, improve energy efficiency and lower emissions from mobile and fixed equipment.

• Reduced diesel fuel consumption and associated operating costs
• Lower exhaust emissions and diesel particulate matter
• Less heat and noise from some types of equipment
• Reduced ventilation demand in certain underground applications
• Greater compatibility with automation, connected equipment and remote monitoring
• More detailed control over the energy used by pumps, fans, conveyors and other motor-driven systems

These benefits are not automatic. Electrification can increase demand on the mine’s power network and introduce new requirements around capacity, protection, charging, maintenance and emergency response. Effective planning must therefore extend beyond the machinery being purchased.

Building the Electrical Infrastructure Behind Mine Electrification

Introducing more electrically powered machinery can significantly increase the demands placed on a mine’s electrical network. Before new equipment is deployed, operators may need to assess whether existing systems can provide sufficient capacity, how power will reach different working areas and what additional controls and protection equipment will be required.

Depending on the operation, this may involve:

• Mine-duty substations and power centers
• Transformers and switchgear
• Motor starters and variable frequency drives
• Circuit breakers and electrical protection devices
• Ground monitoring and ground-fault protection
• High-capacity cables and electrical connectors
• Electrical controls designed for demanding mining conditions

Carroll Technologies Group works with established electrical equipment manufacturers, allowing mines to select products suited to their existing infrastructure, operating environment and future electrification plans.

Mine Power Distribution Systems

Power centers, substations and switchgear help transform, control and distribute electricity to machinery and operating areas across the mine. These systems may need to support pumps, fans, conveyors, crushers, processing equipment and an increasing number of electrically powered mobile and fixed assets.

Carroll supplies power distribution equipment from manufacturers including Line Power, Mining Controls Inc. and SMC/Becker. The available equipment includes mine-duty power centers, substations, switchgear, electrical controls, transformers and ground-protection systems.

Explore underground mining power distribution equipment →

Mining Controls Inc. Power Centers and Substations

Mining Controls Inc., commonly known as MCI, designs and manufactures heavy-duty electrical power equipment for underground mining operations. Its range includes customized power centers, substations, AC switchgear, reactors and ground-monitoring equipment.

This makes MCI particularly relevant when a mine needs to expand or adapt its electrical distribution network to support additional powered equipment. The equipment can be specified around the electrical, mechanical and environmental requirements of the individual operation.

Explore Mining Controls Inc. power solutions →

SMC/Becker Electrical and Motor Control Equipment

SMC/Becker provides electrical components, motor control equipment and power distribution solutions designed for mining environments. Its equipment can support the starting, stopping, control and protection of electrically powered machinery.

The range includes belt power centers with integral starters, distribution boxes, portable substations, electrical controls and explosion-proof motor starters. As mines become more electrically dependent, these controls form an important link between the power network and the machinery it serves.

Carroll also provides factory-authorized support and repairs for SMC equipment, helping customers maintain critical systems after installation.

Explore SMC/Becker motor control solutions for mines →

Electrical Connections from Special Mine Services

Power must not only be generated and distributed. It must also be connected safely to the equipment that uses it. Special Mine Services, or SMS, manufactures electrical connectors for mining, tunneling, underground construction, heavy equipment and portable power applications.

The SMS range includes single-pole, multi-pole and quick-lock connectors designed for dependable performance in demanding operating environments. Connectors may appear to be a relatively small part of an electrification project, but they are critical to transferring power between cables, distribution equipment and machinery.

The correct connector can also affect how efficiently equipment is installed, moved, disconnected or replaced as production areas change.

Explore SMS electrical connectors for mining →

View the SMS 8346 Series Uni-lock and lever-action connectors →

Controlling Electrically Powered Machinery

Electric motors operate many of the systems a mine depends on, including conveyors, pumps, ventilation fans, crushers, screens and material-handling equipment. Mine electrification may increase both the number of electric motors in use and the importance of controlling them effectively.

Motor controls can help equipment start and stop correctly, regulate operating speed, protect motors against damaging electrical conditions and reduce unnecessary mechanical stress.

Benshaw Motor Controls, Soft Starters and Drives

Benshaw develops motor control and motor protection solutions for heavy industrial applications. Its mining offering includes low- and medium-voltage soft starters, variable frequency drives and engineered motor control systems for equipment such as conveyors, crushers, pumps, fans and compressors.

A soft starter controls the electrical power supplied while a motor starts, helping to reduce the sudden electrical and mechanical stresses associated with full-voltage starting. A variable frequency drive, commonly known as a VFD, provides greater control over motor speed and torque. This can be particularly useful for pumps, fans and conveyors where output requirements change during operation.

Carroll supplies Benshaw equipment and provides factory-authorized repair and maintenance support.

Explore Benshaw motor control products →

Learn about variable frequency drives for mines and tunneling →

Protecting the Mine’s Electrical Network

As operations become more dependent on electrical power, the consequences of overloads, short circuits, grounding problems and equipment faults can become more significant. Electrical protection equipment helps isolate faults, protect machinery and reduce the risk of damage spreading through the wider power network.

Eaton Power Control and Circuit Protection

Eaton provides a broad range of electrical power management, distribution and protection equipment for mining and heavy industry. Through its Eaton and Cutler-Hammer range, Carroll supplies circuit breakers, undervoltage circuit breakers, safety switches, magnet coils and related electrical components.

Circuit breakers help protect electrical systems when excessive or unsafe electrical loads are detected. They can interrupt the circuit before overheating, overloads or short circuits cause further damage.

Carroll Technologies Group is also an authorized Eaton repair center, providing servicing for Eaton mining and industrial equipment using OEM-certified components.

Explore Eaton and Cutler-Hammer electrical protection equipment →

Ground Monitoring and Fault Protection

Ground monitoring equipment helps identify faults within a mine’s electrical system and can initiate an alert or shutdown when unsafe conditions are detected. This is particularly important where variable frequency drives, mobile electrical equipment and extensive cable networks are in use.

Carroll supplies fixed and portable electrical ground-monitoring equipment from manufacturers including MCI and Becker/SMC. As mines introduce additional electrically powered equipment, grounding and fault protection should be considered as part of the overall infrastructure design rather than as an individual product purchase.

Explore electrical ground monitors and fault-monitoring systems →

Transformers and Supporting Electrical Components

Transformers remain an important part of mine electrical infrastructure, but their purpose and capacity vary considerably. Large mine-duty transformers may form part of a substation or power center, changing voltage before electricity is distributed to heavy machinery.

Smaller control transformers, including products supplied by Micron, may be used within control circuits and individual pieces of electrical equipment. They are valuable supporting components, but they should not be presented as the principal transformer behind a wider mine-electrification project.

The size, voltage, load and purpose of the transformer must therefore be matched carefully to the application. Carroll can help operations identify appropriate transformers and related components from its wider network of electrical equipment partners.

Learn about Micron control transformers →

Communications for More Connected Mines

Mine electrification often develops alongside automation, remote operation and increased use of connected equipment. Workers still need reliable voice communication, while control teams may need to receive alerts and operational information from different areas of the mine.

Each communications technology has a different purpose. Portable radios, fixed mine phones and leaky feeder networks should therefore be considered separately rather than grouped together as a single product solution.

Portable Mine Radios

Portable radios allow workers and supervisors to communicate while moving around the site. They may be used for routine coordination, maintenance work and emergency communications. Carroll supplies radio solutions for underground and surface operations, including equipment from Icom America.

View Icom F3400D/F4400D digital portable radios →

Underground Mine Phones

Fixed mine phones provide established communication points in important locations such as working areas, refuge areas, maintenance facilities and travel routes. They continue to provide a straightforward way to contact other areas of the operation, even as more advanced wireless and connected systems are introduced.

View the Model 112 GEN II Page Boss mine phone →

Leaky Feeder Communication Systems

A leaky feeder system uses cable installed through the mine to transmit and receive radio signals. It can extend wireless communication into underground areas where conventional radio coverage would otherwise be limited.

This makes leaky feeder infrastructure particularly relevant to mines that need dependable communication across expanding or changing working areas. Depending on the system, the network may also support data transfer and other connected technologies.

Explore PBE Axell leaky feeder communication systems →

Protecting Workers Around Changing Equipment Fleets

Electrification may change the type of machinery operating at a mine, but it does not remove the risks created when workers and mobile equipment occupy the same area. Battery-electric and remotely operated vehicles may also be quieter than conventional diesel machinery, making visual awareness, traffic procedures and technology-based warnings particularly important.

Proximity detection and collision warning systems can help alert operators or personnel when workers, vehicles or other hazards are nearby. The right system should reflect the mine layout, equipment types, traffic routes and interaction risks present at the individual site.

Explore proximity detection devices for mines →

Atmospheric Monitoring Still Matters

Reducing the number of diesel engines underground may help lower diesel exhaust and heat, but it does not eliminate the need for atmospheric monitoring. Mines may still need to detect flammable gases, toxic gases, oxygen-deficient environments and atmospheric changes following a fire or equipment incident.

Portable multi-gas detectors allow personnel to monitor conditions while working or inspecting different areas of the mine. Fixed monitoring systems may also be needed where continuous information must be sent to a control room or wider monitoring network.

View multi-gas detection equipment for mining →

Supporting Electrical Equipment Over Its Full Lifecycle

Mine electrification is not completed when new equipment is commissioned. Power distribution systems, communication networks, monitors and safety devices require ongoing inspection, testing, maintenance and repair. Mines also need access to replacement parts and technical support when equipment does not perform as expected.

Planning for this support from the beginning can help reduce downtime and prevent important systems from being left out of service. This is particularly important where a fault in one electrical or communications component could affect a larger part of the operation.

Carroll Technologies Group supports the products it supplies with access to troubleshooting, spare parts, factory-authorized repair facilities and 24/7 technical support. This allows customers to consider the long-term serviceability of equipment alongside its initial specification and installation.

Explore Carroll product support →

Learn about factory-authorized repairs and maintenance →

Planning for Mine Electrification

Every mining operation will take a different approach to electrification. Some may replace selected diesel vehicles, while others may introduce electric equipment as new sections are developed. In either case, the supporting infrastructure should be considered from the beginning.

A mine electrification plan should consider:

• How much additional power will be required now and in the future
• How power will be transformed, distributed and extended across the operation
• Where power centers, substations, switchgear and transformers will be needed
• How mobile and fixed equipment will be connected to the electrical network
• Which motor controls, soft starters and drives are appropriate for each application
• How overloads, short circuits, grounding problems and other faults will be detected and isolated
• Whether communications coverage must be expanded or upgraded
• How personnel will be protected around new mobile and remotely operated equipment
• What inspection, repair, spare-parts and technical support will be available throughout the equipment lifecycle

By treating power distribution, control, protection, communications and safety as parts of the same strategy, mines can create a more reliable foundation for electric equipment and future technology adoption.

How Carroll Technologies Group Supports Mine Electrification

Carroll Technologies Group supports mining operations with the electrical, communications, monitoring and safety infrastructure required as sites become more electrically powered and connected.

Through relationships with manufacturers including Line Power, Mining Controls Inc., SMC/Becker, Special Mine Services, Benshaw and Eaton, Carroll can help customers identify products suited to their existing systems, operating conditions and planned equipment changes. Smaller components, including Micron control transformers, can be specified where they serve an appropriate supporting application.

Carroll also supports customers beyond the initial purchase with technical advice, installation support, troubleshooting, servicing and factory-authorized repairs. This combination of equipment and lifecycle support is where Carroll’s role in mine electrification is strongest.

Planning electrical, communications or safety infrastructure for your mine? Speak to one of our experts today.