1. On-site performance
What problems will the mining area see?
- As soon as the crusher, mill, water pump or air compressor is started, the generator speed will drop and the voltage will drop significantly.
- A single piece of equipment can be turned on, but multiple pieces of equipment will trip if they are turned on at the same time according to the production rhythm.
- Onsite personnel can only shut down the camp, workshop or part of the conveyor belt before trying to start the main equipment.
- The power quoted by the supplier seems to be sufficient, but it becomes unstable when the startup sequence changes during trial production.
2. Risk causes
The reasons behind the power layout
The mining load is not just about the operating power. The starting of large motors, motor control methods, starting of conveyor belt materials, and changes in water pump lift will all affect the instantaneous endurance of the generator.
If we only add up the equipment nameplate power without confirming which equipment starts at the same time, which equipment must run continuously, and which loads can be started with delay, the unit capacity and power distribution protection will be easily penetrated by on-site start-up impact.
The expansion site will also encounter a problem: old equipment, new equipment, and temporary equipment are mixed together, and the original power distribution and cables are not recalculated according to the new production rhythm.
3. Scope of influence
Production suspension, fuel consumption, maintenance, safety and environmental protection will all be magnified
- Trial production failed repeatedly, and the crushing, screening, pumping stations and conveying systems could not form a stable rhythm.
- After each trip, it must be checked, reset, and restarted. The entire shift's output and management time will be lost.
- If the generator operates under inappropriate load impact for a long time, fuel consumption, wear and failure probability will increase.
- Ordinary electrical problems become safety issues if drainage or ventilation equipment is also towed away.
4. How to avoid before construction
What do mine owners need to confirm in advance?
- Don’t just ask “how many kW are needed?” First, list the main equipment list, startup method, simultaneous operation relationship and future expansion equipment.
- Confirm which crushers, pumps, air compressors, conveyor belts, welders, camps and workshops must run together and which ones can be started in batches.
- Reserve starting margin, parallel possibility, low-voltage power distribution and cable capacity in the plan. Don’t just look at the price of the generator host.
- Before trial production, write the startup sequence into the debugging plan to avoid temporarily switching equipment on-site based on experience.
5. On-site confirmation information
The closer the information is to the scene, the faster the plan will be implemented
- List of main equipment and photos of nameplates, especially crushers, water pumps, air compressors, mills, and conveyor belts.
- The starting method of each device, whether it is soft start, frequency conversion or direct start.
- Equipment planned to operate simultaneously, operating hours per day and equipment for future expansion.
- Site voltage, frequency, altitude, temperature, and existing generator or grid conditions.
