Lower current and cable burden
Compared with 400V distribution at the same power, 6.3–11kV greatly reduces line current, limiting conductor size or parallel cable runs and easing busbar and breaker current duty.
Mining products / high-voltage power
Mining High-Voltage Diesel Power Systems
For large capacities, long cable runs and existing 6.3–11kV mine buses, direct high-voltage generation lowers distribution current, cable losses and voltage drop while integrating switchgear, paralleling and grounding.
6.3kV / 6.6kV10.5kV / 11kV500–2600kWSingle or parallel operation
500–2600kWFor medium and large mine loads
6.3–11kVMatches mine MV bus systems
Cummins / Yuchai / WeichaiEstablished engine options
Open / Parallel / ContainerStructures built around the site
Why high voltage
Move the same power with less current across the mine
In a three-phase system, raising voltage lowers current for the same transmitted power. This changes cable, switchgear and loss requirements when mine loads are large, remote or already connected to a 6.3kV or 10.5kV bus.
Lower long-run losses and voltage drop
Conductor losses rise with current squared. Lower current helps control I²R losses, heating and voltage drop on long mine feeders.
Direct fit with mine MV buses
Where 6.3kV or 10.5kV buses, pumps, crushers or hoists already exist, generation at the same voltage reduces temporary step-up stages and interface complexity.
Scalable capacity and coordinated protection
Large single sets or parallel plants can coordinate synchronization, sectionalizing, protection and redundancy on the high-voltage side for continuous production and staged expansion.
When low voltage is the better fit
For smaller capacities, short cable runs and predominantly 380V, 400V or 440V loads, a low-voltage system is usually simpler. High voltage is selected for capacity, distance, existing bus voltage and load voltage—not because higher voltage is automatically better.
System configurations
Four core configurations for mine high-voltage power
From a single emergency set to a redundant multi-set plant, generation, protection and site interfaces share one voltage architecture.
Single set
Single High-Voltage Generator System
High-voltage main or emergency power for dewatering pumps, hoists and individual process lines.
- Direct 6.3kV or 10.5kV output
- Auto-start, protection and event history
- Open installation or dedicated plant room
Parallel redundancy
Parallel High-Voltage Generator System
For large loads, staged expansion and N+1 redundancy with synchronization, load sharing and automatic dispatch.
- Synchronized multi-set operation
- Active and reactive load sharing
- Capacity reserved for expansion and redundancy
Outdoor deployment
Containerized High-Voltage Power Station
Generation, control and distribution in protected enclosures for dust, rain, remote sites and integrated transport.
- Separated generation and electrical zones
- Ventilation, exhaust and service access
- Factory integration and fast site deployment
Special connection
Dual-Voltage and Quick-Connect System
For shared mine backup, mobile emergency duty and sites with different bus voltages.
- 6.3kV / 10.5kV dual-voltage option
- High-voltage quick-connect interface
- Reverse-power, grounding and DC control options
Power and engines
High-voltage capacity matched to mine duty
Power bands support early project planning. Final capacity is based on starting current, coincident loads, altitude and redundancy.
Dewatering stations, auxiliary process lines and local high-voltage backup.
Hoisting systems, processing equipment and medium production zones.
Large crushing lines, multi-zone distribution and expansion plants.
Cummins high-voltage range
For critical loads and emergency systems with high reliability targets.
Yuchai high-voltage range
Broad coverage for mine main, standby and parallel packages.
Weichai high-voltage range
Wide capacity coverage for large loads and expansion systems.
Complete power system
Electrical integration is as important as the generator set
Every module is aligned with the site bus, cable route, protection philosophy and operating mode.
High-voltage generator set
Engine, high-voltage alternator, governing, excitation and set control.
Switchgear and protection
Metal-clad or compact switchgear, breakers and safety interlocks.
Paralleling and synchronization
PT/CT sensing, synchronization, load sharing and automatic dispatch.
Grounding and reverse-power protection
Neutral grounding, reverse-power absorption and DC control power.
Dual voltage and quick connection
Interfaces for different bus voltages and mobile emergency connection.
Remote monitoring and records
Operating data, alarms, event history and maintenance reminders.
Quality evidence
Quality control from core components through factory testing
Every proof point supports service life, operator safety and maintainability.
Core components are selected around duty, altitude, operating hours and service access, with a clear bill of materials.
Compartments, breaker trucks, grounding switches and anti-misoperation logic are part of the electrical design.
Factory tests cover target voltage, load capability, step loading, protection actions and paralleling logic.
Delivery includes key settings, drawings, test records, training and recommended spares.
Get a mining high-voltage system configuration
Share bus voltage, critical loads, starting method, operating hours, altitude and installation location. Engineering will define generator capacity, switchgear, paralleling and protection scope.