Quality Suppliers and Product Analysis of Mining Transformers

　　I. Recommended Industry-Leading Enterprises and Brands

　　1. Zhonglian Electric

　　Enterprise Status: A leading player in China's mining flameproof transformer industry, specializing in the research, development, and manufacturing of mining flameproof mobile substations and dry-type transformers.

　　Technological Advantages: Possesses core technologies for large-capacity mining flameproof mobile substations. It was the first in China to successfully develop and market a 4000kVA product. The 6300kVA product developed in 2008 was identified as reaching internationally advanced levels.

　　Market Coverage: Has established collaborations with major domestic coal enterprises such as Shenhua Group and Datong Mining. Its products are widely used in coal mine safety renovation projects.

　　2. TBEA (Tebian Electric Apparatus Stock Co., Ltd.)

　　Brand Strength: A global system solution provider for the energy sector, with an annual transformer production capacity of 260 million kVA, ranking among the top globally.

　　Product Features: Offers a full range of mining transformers, including oil-immersed and dry-type models, renowned for their high efficiency, energy conservation, and environmental friendliness.

　　Technical Certifications: Participates in the formulation of multiple national and industry standards. Possesses a national-level engineering laboratory and a postdoctoral research station.

　　3. Siemens (SIEMENS)

　　International Influence: A global leader in the electrical and automation fields, with business operations spanning over 200 countries worldwide.

　　Mining Transformer Solutions: Provides transformer products tailored for the harsh environments of coal mines, featuring explosion-proof, fire-resistant, and moisture-proof characteristics.

　　Service Network: Boasts a comprehensive R&D, production, sales, and service system in China, ensuring rapid response to customer needs.

　　4. Hongqi Group Wenzhou Transformer Co., Ltd.

　　Enterprise Qualifications: A professional manufacturer designated by the State Electric Power Industry Department to produce low-loss power transformers and special transformers, founded in 1960.

　　Production Capacity: Achieves an annual production capacity of 4 million kVA for oil-immersed power transformers and 3 million kVA for dry-type transformers.

　　Core Products: The KBSG-T mining flameproof dry-type transformer and the KBSGZY-T mining flameproof mobile substation, both of which have obtained national explosion-proof certificates and coal mine safety certification.

　　5. Yancheng Weida Transformer Manufacturing Co., Ltd.

　　Technical Expertise: A high-tech enterprise focusing on the R&D and production of mining flameproof transformers and mobile substations.

　　Product Series: Includes the KBSGZY series mining flameproof mobile substations and the KBSG series mining flameproof dry-type transformers, widely used in industries such as coal mining, metallurgy, and chemicals.

　　Qualification Certifications: Has passed 3C certification and ISO9001 quality management system certification, and possesses explosion-proof certificates and mining product safety certification.

　　II. Key Points for Selecting Quality Suppliers

　　1. Technological Strength

　　R&D Capabilities: Prioritize enterprises that possess core technologies and independent R&D capabilities, such as Zhonglian Electric and TBEA.

　　Product Certifications: Ensure that products have passed tests by the National Supervision and Inspection Center for Explosion-Proof Electrical Products Quality and obtained relevant safety certifications (e.g., explosion-proof certificates, coal mine safety certification).

　　2. Product Quality

　　Material Selection: Pay attention to the quality of transformer cores, windings, and insulating materials, such as the use of high-quality cold-rolled silicon steel sheets and high-conductivity copper materials.

　　Manufacturing Processes: Evaluate the enterprise's production process level, such as the application of advanced technologies like vacuum casting and laser welding.

　　3. Customized Services

　　Meeting Special Needs: Select suppliers capable of providing customized solutions based on the actual operating conditions of mines (e.g., voltage level, capacity, protection level).

　　Flexible Response: Assess the supplier's flexibility and response speed in product design, production, and delivery.

　　4. After-Sales Service

　　Service Network: Choose enterprises with service outlets nationwide capable of providing rapid on-site support.

　　Service Content: Pay attention to whether the supplier offers full lifecycle services such as installation, debugging, maintenance, and troubleshooting.

　　5. Cost-Effectiveness Assessment

　　Initial Procurement Cost: Compare the prices of different brands and models, and conduct a comprehensive assessment in conjunction with performance parameters.

　　Total Cost of Ownership (TCO): Consider factors such as product energy efficiency rating, maintenance costs, and service life to calculate the TCO.

　　III. Recommended Typical Products

　　1. Zhonglian Electric Mining Flameproof Mobile Substation

　　Model: KBSGZY-630/10

　　Features: Adopts a flameproof enclosure and special explosion-proof joint surface design, with built-in DuPont NOMEX insulating material from the United States, ensuring outstanding safety performance.

　　Applications: Suitable for power distribution in equipment such as pumps, conveyors, and mining machines in underground coal mines.

　　2. TBEA Mining Dry-Type Transformer

　　Model: SCB14-2000KVA

　　Features: H-class insulation (180°C), epoxy resin casting process, low noise (≤55dB), and energy efficiency rating reaching Level II.

　　Applications: Widely used in commercial buildings, airports, hospitals, and other places with high requirements for noise and energy efficiency.

　　3. Siemens Mining Oil-Immersed Transformer

　　Model: S20-2500KVA

　　Features: Oil-immersed cooling, F-class insulation, optional short-circuit impedance, and compliance with the GB 20052-2020 Level II energy efficiency standard.

　　Applications: Suitable for power transmission and transformation links in power systems and power supply for large industrial enterprises.

　　4. Hongqi Group KBSG-T Mining Flameproof Dry-Type Transformer

　　Model: KBSG-1250/10

　　Features: Small size, light weight, reliable flameproof performance, and electrical performance indicators reaching the export level of similar products.

　　Applications: Specially designed for underground coal mines, suitable for explosive environments with methane gas mixtures and coal dust.

　　IV. Purchasing Recommendations

　　1. Clarify Needs: Determine the transformer's capacity, model, and protection level based on the mine's actual power load, voltage level, and environmental conditions.

　　2. Conduct On-Site Inspections: Visit key suppliers to understand their production scale, technical strength, and quality control systems.

　　3. Conduct Comparative Analysis: Comprehensively compare the product performance, prices, and after-sales services of different suppliers to select the most cost-effective solution.

　　4. Stay Informed of Policies: Understand national and local policy requirements for mining transformers in terms of energy efficiency and safety to ensure that the purchased products comply with relevant standards.

　　Through the above analysis, users can select appropriate mining transformer products from industry-leading enterprises and quality suppliers based on their own needs, ensuring the safety, stability, and efficiency of power supply in mines.