Shaanxi Zhongfa Power Energy Technology Co., Ltd. is a comprehensive national high-tech enterprise specializing in the R&D, production, manufacturing, sales, installation, maintenance and service of diesel, gasoline and gas generator sets, as well as high-voltage and normal-voltage generator sets. Meanwhile, it is a modern enterprise integrating the manufacturing, installation, maintenance and servicing of complete high and low voltage electrical equipment.
Zhongfa Power is located in Xi’an, the ancient capital of 13 dynasties. We possess strong R&D capability, fine production craftsmanship, professional manufacturing expertise, advanced testing equipment and a sound management system.
Our product power range covers 3 kW to 3000 kW.
Our factory has passed ISO9001 Quality Management System Certification, ISO14001 Environmental Management System Certification and ISO45001 Occupational Health and Safety Management System Certification. We have received numerous national, provincial and municipal honors, including Top 10 Brands in China’s Generator Set Industry and Excellent Supplier for Government Procurement.
Partner Brands
Engines: Weichai, Yuchai, Shangchai, Cummins, Caterpillar, Volvo, MTUAlternators: Stamford, Marathon, EnggaControl Systems: Deep Sea, ComAp
Company Address: Room 1507, Block A, Lugang Building, No.9 Gangwu Avenue, Xi’an International Port District, Xi’an City, Shaanxi Province, P.R.ChinaFactory Address: Gaoling Industrial Park, Gaoling District, Xi’an City, Shaanxi Province, P.R.ChinaTel: +86 13289279101Email: [email protected]
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By the end of August, northern Shaanxi began to cool down.
A 1200 kW high-voltage diesel generator set successfully completed its final commissioning procedure with full support from Zhongfa Power’s service team.
Voltage, current and frequency readings lit up one after another on the instrument panel and remained steadily within standard ranges. The load test was passed in one attempt, and all protection functions were fully verified as normal.
The on-site supervisor signed the commissioning report and commented: “Great, now we can rest assured.”
The coal mine’s critical power backup asset was officially in place.
I. Power Supply at Coal Mines Is Far Less “Stable” Than You Might Think
Many people assume coal mines are equipped with dual-circuit power supply and will never suffer blackouts.
Theoretically this holds true. According to the Coal Mine Safety Regulations, a mine must have two independent power supply circuits. If one circuit fails, the other must carry the full load.
However, real-world conditions are much more complex.
In recent years, extreme weather events have occurred frequently. Power grid failures caused by lightning strikes, heavy rain and strong winds are not uncommon. Once the upper power grid malfunctions, both circuits may lose power simultaneously. Underground ventilation fans, drainage pumps and hoists will stop — every second is a matter of life and death.
In 2024, a coal mine in Shanxi suffered a power failure where both circuits went offline. The main ventilation fans stopped operating for nearly two hours, resulting in gas over-limit at multiple underground locations.
This is not an isolated incident. For this reason, regulatory authorities have introduced mandatory requirements.
II. Mandatory Policy Requirements: Full Completion by the End of 2026
On April 30, 2025, the Shanxi Provincial Energy Bureau, the Provincial Department of Emergency Management and the Shanxi Bureau of the National Mine Safety Administration jointly issued a document. It requires all operating and under-construction underground coal mines across the province to install readily available emergency power supplies.
The document sets out several core requirements:
Function: After loss of dual-circuit power, the emergency power supply must cut in rapidly. The main ventilation fans shall start and run normally within 10 minutes, and other equipment within 20 minutes. The continuous power supply duration shall be no less than 2 hours.
Timeline: High-gas coal mines, coal and gas outburst mines, and mines with all safety exits as vertical shafts shall complete configuration by the end of June 2026. All other coal mines shall finish installation by the end of December 2026.
Configuration: Emergency power options include diesel generator sets, battery energy storage systems and a third power supply circuit. Where diesel generator sets are adopted, the voltage shall meet requirements for both civil and industrial use.
This is not a recommendation; it is a mandatory regulation.
Shanxi took the lead, followed by major coal-producing provinces such as Guizhou. In April 2026, Guizhou Provincial Energy Bureau issued a notice on subsidies for building emergency energy storage power supplies for coal mines. The nationwide rollout of emergency power configuration for coal mines has fully begun.
III. 1200 kW: Not an Arbitrary Figure
The 1200 kW unit successfully commissioned in this project was not selected randomly.
The emergency power capacity of a coal mine must cover the total load of main ventilation, drainage and vertical shaft personnel hoisting equipment. The combined power demand for one main ventilation fan, multiple drainage pumps and a hoisting system is substantial.
More importantly, when calculating emergency loads, many coal mines only account for main ventilation fans while ignoring auxiliary shaft hoists and submersible pumps. Only when a real blackout occurs do they discover insufficient power to start the equipment.
The 1200 kW rating comes from precise calculation of all primary safety-critical loads of this coal mine, with adequate margin reserved.
As the mine supervisor put it: “It has enough capacity plus spare margin — that is what an emergency power supply should be.”
IV. Commissioning Site: One-shot Success Built on Solid Expertise
Before commissioning, Zhongfa Power’s service team carried out thorough site surveys and technical plan coordination.
After delivery, hoisting and positioning, cable connection and control wiring were completed step by step in accordance with standard procedures. On commissioning day, engineers checked wiring one by one, calibrated parameters and simulated power cut switching.
The most critical test: simulate dual-circuit power failure to trigger automatic start, automatic paralleling and loaded operation of the generator set.
From the power loss signal trigger to stable loaded output of the unit, the whole process ran smoothly without interruption. Voltage, frequency and power factor all met specifications.
It passed on the first try.
This was not luck. It resulted from rigorous execution at every stage: pre-project technical communication, on-site installation and commissioning verification.
V. One Generator Set, A Peace of Mind for an Entire Mine
What does the arrival of this 1200 kW high-voltage genset mean for this coal mine?
It means the main ventilation fans will definitely start within 10 minutes upon dual-circuit power loss. It means the underground drainage system gains genuine double protection. It means miners obtain an extra layer of tangible safety guarantee.
The Shanxi official document states: “The basic objective of emergency power configuration is to ensure safe personnel evacuation under sudden emergencies.”
Simply put: with this generator set online, underground workers have an escape route.
Zhongfa Power is honored and responsible to participate in this project and deliver power security for the coal mine.
1200 kW, successfully commissioned in a single run and safely put into service.
This is not merely advertising; it is the true story of a generator set successfully delivered on site.
