Mine power plan

Start with the mine site issue, then choose the right power plan

For unstable grids, crusher starts, pumping and dewatering, high altitude, fuel cost, remote after-sales, or old generator replacement, start from the site issue first; then an engineer defines the required generation, ATS, paralleling, distribution, fuel, and service configuration.

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Mine power system diagnosis

First identify which mine power issue is blocking the site

Mine power is not configured by equipment power alone. First review source conditions, critical loads, site constraints, and follow-up support, then define the generator sets, ATS, paralleling, distribution, fuel, and service scope.

Mine grid fluctuation and site distribution problem

Site problem

The site has grid power, but unstable voltage or frequent outages interrupt production.

01 Weak-grid production outage problem

When the mine relies mainly on the grid, one grid fluctuation can stop production

Site symptoms: The mine normally relies on grid power. When voltage fluctuates or power goes out, the crushing line, pump station, workshop, and camp may all stop.
Possible impact: Production rhythm is interrupted, and dewatering, communications, and camp life can also be affected while the site waits for grid recovery or shifts loads temporarily.
How engineers review it: Engineers first check grid fluctuation frequency, which equipment cannot stop, and acceptable outage time, then decide how to set up ATS, backup power, and distribution zoning.

Grid fluctuationProduction outageMust-protect equipmentATS transferBackup power

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Describe the grid fluctuation and the equipment that stops production; a HOHANK engineer will identify the operating risk and define the review scope:

Grid fluctuation frequencyOutage durationEquipment that cannot stopExisting distribution cabinetFuture expansion plan

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Remote mine fuel delivery and refueling problem

Site problem

How often fuel trucks arrive, whether tanks are enough, and how loads run all become long-term costs.

02 Fuel supply and cost problem

In remote mines, long-term self-generation is most exposed to fuel use and refueling loss of control

Site symptoms: The mine is far from town, diesel transport roads are poor, fuel-truck arrivals are unstable, and the site needs long continuous power.
Possible impact: Without fuel-consumption estimates and refueling planning, day tanks, bulk tanks, delivery frequency, and load operation all become long-term cost pressure.
How engineers review it: Engineers review running hours, load factor, refueling cycle, tank capacity, and transport route, then decide whether load grouping or a hybrid solution is needed.

Fuel-use estimateRefueling cycleDay tankLoad groupingRunning hours

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Share daily running hours, main load size, fuel-delivery cycle and available tank space; a HOHANK engineer will estimate long-term fuel and operating cost.

Running hoursLoad rateRefueling distanceTank capacityTransport road condition

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Temporary power problem on a mine construction and expansion site

Site problem

Roads, dewatering, camps, welding, and temporary lines need power first; poor power planning slows construction.

03 Construction and expansion temporary-power problem

During new mine construction and expansion, site power often cannot keep up with the work schedule

Site symptoms: During new mine construction, expansion, or trial production, camps, drills, welders, dewatering, and temporary crushing lines all compete for power.
Possible impact: If temporary power cannot keep up, construction, installation, commissioning, and trial production slow down, and later expansion may require distribution rework.
How engineers review it: Engineers first sort out which equipment needs power first, the power of each unit, and which loads run together, then reserve temporary distribution and expansion interfaces.

Construction temporary powerStage loadsTemporary distributionCable routeExpansion reserve

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Share the current construction stage, planned equipment, unit ratings and expected expansion pace; a HOHANK engineer will define the temporary power plan.

Equipment listUnit power ratingSimultaneous loadsConstruction stageFuture expansion plan

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Voltage-drop problem when the crushing, screening, and conveyor line starts

Site problem

Before the crushing line starts, review large-motor starting, cables, and the distribution relationship.

04 Crusher start-up voltage-drop problem

When the crusher, screens, and conveyors start, site voltage drops

Site symptoms: When the crusher, screens, feeders, and conveyors start, voltage drops sharply, the distribution cabinet trips, or the whole line stops.
Possible impact: Looking only at running power can underestimate starting impact, causing repeated voltage drops and affecting crushing-line output and equipment life.
How engineers review it: Engineers review each motor rating, starting method, starting sequence, and simultaneous loads, then define the generator set, paralleling, and low-voltage distribution configuration.

Starting impactStarting sequenceSimultaneous operationLow-voltage distributionCritical loads

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Send the crushing-line equipment list, each motor rating, starting method and trip history; a HOHANK engineer will identify the likely cause and required checks.

Motor ratingStarting methodTrip recordCable specificationDistribution cabinet capacity

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Mine dewatering pump outage and water accumulation risk

Site problem

In rainy seasons, tailings areas, and low-lying work zones, dewatering pumps cannot be handled only after an outage.

05 Dewatering power protection problem

When dewatering pumps stop, water and safety risk rise quickly

Site symptoms: In rainy seasons, low-lying pits, or tailings areas, once power fails and dewatering pumps stop, water accumulates quickly.
Possible impact: Accumulated water affects roads, equipment, and personnel safety, and in serious cases causes work stoppage, environmental pressure, and equipment damage.
How engineers review it: Engineers first check pump power, starting method, acceptable outage time, and whether ATS automatic transfer and an independent protected-power circuit are needed.

Dewatering pumpsTailings safetyAllowed outage timeATS transferFuel autonomy

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Share the pump quantity, rating, installation position and maximum allowable outage; a HOHANK engineer will define the backup-power and transfer scope.

Pump quantitySingle-pump powerWater accumulation speedTransfer timeRainy-season operation

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High-altitude mine dust and cooling problem

Site problem

For mountain mines, rated power on paper is not enough; altitude, temperature, dust, and cooling all affect site output.

06 High-altitude site-condition problem

At high altitude and in heavy dust, equipment may not carry the load on site

Site symptoms: Mountain mines have high altitude, large temperature swings, and heavy dust. Equipment that looks sufficient on paper may overheat, derate, or alarm on site.
Possible impact: When capacity margin is insufficient, key loads may not start, and poor filter and cooling maintenance adds shutdown risk.
How engineers review it: Engineers review altitude, temperature, dust, ventilation, and continuous running time, then recheck capacity margin and maintenance intervals.

Altitude deratingDust filtrationCooling and ventilationTemperature conditionsMaintenance interval

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Provide the mine altitude, ambient temperature, dust level and planned loads; a HOHANK engineer will calculate the required environmental derating and capacity margin.

Mine altitudeAmbient temperatureDust conditionVentilation conditionContinuous running time

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Old mine power system problem before expansion

Site problem

Keeping an old system running amplifies fuel use, repairs, downtime, and expansion connection issues together.

07 Old-system expansion bottleneck problem

If old equipment already fails often, decide before expansion whether to replace it or parallel it

Site symptoms: Old equipment has long running hours and more failures, while the mine is preparing new crusher, pump station, workshop, or camp loads.
Possible impact: Forcing the old system to continue raises fuel use, repairs, downtime, and temporary-fix costs together, and makes expansion connection more passive.
How engineers review it: Engineers review old-equipment condition, failure frequency, future loads, cables, and distribution cabinets, then decide on replacement, paralleling expansion, or zoned power.

Old-system assessmentExpansion loadsParalleling expansionDistribution reviewUpgrade plan

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Send the existing unit age, fault records, current loads and new-equipment plan; a HOHANK engineer will define a more reliable upgrade path.

Years in operationFault recordsNew loadsExisting distributionUpgrade budget

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Remote mine spare parts and remote diagnosis problem

Site problem

In remote mines, even small faults cannot wait; common spare parts, records, and remote diagnosis preparation must be ready in advance.

08 Remote after-sales and spare-parts problem

When equipment stops, slow spare parts and remote diagnosis can turn it into a long shutdown

Site symptoms: The mine is remote. When equipment alarms or stops, it is hard for the site to identify the cause immediately, and common spare parts may be incomplete.
Possible impact: Small faults can turn into long shutdowns when records, spare parts, remote diagnosis, and local repair preparation are missing.
How engineers review it: Engineers review common faults, running records, spare inventory, site tools, and remote-diagnosis conditions, then prepare the recovery chain in advance.

Common sparesRemote diagnosisFault recordsRepair toolsResponse time

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Share the equipment model, alarm information and available spare parts and tools; a HOHANK engineer will define the remote-diagnosis steps and required spare-parts kit.

Equipment modelAlarm informationSpare inventorySite toolsService response

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If you are not sure which type of problem it is, you can also contact the engineer service first. First explain the on-site phenomenon and main equipment, and the engineer will help you confirm the type of problem, critical load and configuration scope.

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