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Comprehensive Guide to Mining Transformer Procurement: Features, Pricing, Manufacturers, and Key Considerations
Comprehensive Guide to Mining Transformer Procurement: Features, Pricing, Manufacturers, and Key Considerations
I. Core Features of Mining Transformers
Explosion-Proof and Protection Ratings:
Must comply with coal mine safety standards (e.g., MT 944-2005), with enclosure protection ratings of at least IP54 to prevent dust and moisture ingress.
Some products are MA/KA certified (Coal Mine Safety Certification) to ensure safe underground operation.Adaptability to Harsh Environments:
Temperature range: -20°C to +50°C, with some models supporting -40°C cold-start capability.
Seismic resistance: Meets GB/T 2423.10 standards to withstand mining vibrations.Technical Parameter Alignment:
Rated Capacity: Common specifications include 315KVA, 500KVA, 630KVA, 800KVA, 1000KVA, 1250KVA, 1600KVA, 2000KVA, 2500KVA, 3150KVA, and 4000KVA. Selection should align with mining load requirements.
Rated Voltage: 6KV/10KV (high-voltage side) and 0.4KV/0.69KV (low-voltage side), with custom voltage options available.
Connection Group Label: Yy0 or Yd11, tailored to different load characteristics.
Short-Circuit Impedance: 4%-6% to ensure equipment safety during short circuits.
II. Market Price Ranges
Price Range | Representative Product/Manufacturer | Key Price Influencing Factors |
---|---|---|
Low-End Range | Shandong Deli Electric Mining Transformer (~¥80,000/unit) | Basic configuration, aluminum core, no smart monitoring features |
Mid-Range | Hebei Shengzhi/Shandong Tengda Mining Transformers (¥120,000–¥180,000) | Copper core, includes temperature control system, MA-certified |
High-End Range | Jiangsu Anzheng/Liaoning Runsheng Premium Mining Transformers (¥220,000–¥280,000) | High explosion-proof rating (ExdI Mb), supports remote monitoring, includes anti-corrosion coating, suitable for deep mine high-temperature environments |
Price Fluctuation Factors:
Explosion-Proof Rating: ExdI Mb (gas explosion-proof) models cost 15%-20% more than standard types.
Material Selection: Copper core is 20%-30% more expensive than aluminum but offers lower losses.
Smart Features: Products with temperature control, telemetry, and telesignaling capabilities are 30%-50% pricier.
Customization: Special protection ratings (e.g., IP68) and cold-start functions incur additional costs.
III. Recommended Manufacturers
Manufacturer Name | Location | Core Products | Service Advantages |
---|---|---|---|
Jiangsu Juli Power Equipment | Jiangsu, Xuzhou | Flameproof mining transformers, smart mining transformers | Supports custom voltage ratings, provides MA certification, 3-year warranty |
Liaoning Runsheng Transformer Factory | Liaoning | Flameproof mining transformers, amorphous alloy mining transformers | Annual production capacity of 6 million KVA, supports deep mine high-temperature customization, exports to multiple countries |
Shandong Huaxin Transformer | Shandong, Liaocheng | Flameproof dry-type mining transformers, mobile substations | Offers installation/commissioning services, supports remote monitoring system integration, 1-3 year warranty |
Hebei Shengzhi Electric | Hebei, Baoding | Flameproof mobile mining substations | 48-hour delivery, compensation for shortages or damages, provides explosion-proof certification |
Shandong Tengda Transformer | Shandong, Liaocheng | Flameproof dry-type mining transformers | Factory-direct supplier, fully sealed design, supports custom protection ratings |
IV. Key Procurement Considerations
Clarify Requirements:
Determine short-circuit impedance based on mining load types (e.g., motor starting, lighting).
Select explosion-proof and protection ratings based on underground conditions (e.g., temperature, humidity, gas concentration).Compare Manufacturers:
Prioritize manufacturers that support customization and provide MA-certified products.
Verify manufacturer qualifications (e.g., ISO certification, national mining safety certification).Inquiry and Negotiation:
Obtain quotes from at least three manufacturers, comparing prices, delivery times, and payment terms.
Clarify whether taxes, freight, installation/commissioning fees, and explosion-proof certification costs are included.Contract Signing:
Specify product specifications (e.g., voltage, connection group label), acceptance criteria (e.g., test reports, explosion-proof certification).
Agree on a warranty period (recommended minimum of 2 years) and after-sales service response time (e.g., 24-hour on-site service).
Sample Procurement List:
Item | Requirement |
---|---|
Model | KBSGZY-4000/10 Flameproof Mobile Mining Substation |
Rated Capacity | 4000KVA |
Rated Voltage | 10KV/0.69KV |
Connection Group Label | Yd11 |
Cooling Method | Oil-immersed self-cooling (AN) |
Explosion-Proof Rating | ExdI Mb |
Material | Copper core |
Delivery Time | Within 45 days |
Warranty Period | 3 years |
Payment Terms | 30% deposit, 60% upon inspection acceptance, 10% warranty retention |
For further details, including manufacturer contacts or customized solutions, please provide your specific requirements (e.g., voltage rating, application scenario, budget), and I will offer tailored recommendations.
The main products include oil immersed transformers, dry-type transformers, power transformers, amorphous alloy transformers, mining transformers, box type substations, high and low voltage switchgear and supporting products
Add: South Head of Mount Huangshan Road, Liaocheng Development Zone, Shandong, China
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