Product Features
• Premium Core Construction
Made with high-quality grain-oriented silicon steel sheets, processed on fully automatic cutting lines with 45° full miter joints, no punching, and high-strength imported binding tapes for minimal losses and superior mechanical strength.
• Advanced Winding Design
Utilizes the latest international main and longitudinal insulation structures. Optimized winding configuration and insulation materials deliver high mechanical strength, exceptional short-circuit resistance, and reliable operation.
• Low Impedance & High Current Output
Specifically engineered for submerged arc furnaces with low impedance voltage and very high secondary currents, enabling continuous, smooth, and stable load running — perfect for submerged arc furnace transformer applications.
• Flexible Voltage Regulation
Multiple tap positions with small step differences; available in on-load (OLTC) or no-load (OCTC) configurations. Early stages provide constant capacity output, while later stages deliver constant current to match varying process needs.
• Robust for Harsh Environments
Optimized for high-temperature, dusty, and vibrating conditions common in ore smelting plants, with efficient cooling systems (ONAN/OFWF/ODWF) for extended service life.
• Broad Compatibility
Suitable not only for ore smelting but also supports power frequency induction furnace transformer and single phase graphitization furnace transformer requirements.
• High Efficiency & Overload Capability
Low no-load and load losses, high efficiency, and strong overload capacity (typically supporting 110%-120% continuous overload), ensuring safe, reliable, and energy-saving long-term operation in harsh metallurgical conditions.
Specifications & Parameters
Typical values — custom designs available according to specific furnace type and customer requirements.
| Category | Specification / Description |
| Rated Capacity | 800 kVA ~ 30,000 kVA (or higher upon request) |
| Primary Voltage |
6 kV / 10 kV / 35 kV (or other standards) |
| Secondary Voltage | Low voltage, high current design — typically 50 V ~ 300 V (customized per furnace process) |
| Tap Changer | On-load or off-load, multi-stage with fine steps |
| Output Mode | Constant capacity in initial stages, constant current in final stages |
| Short-Circuit Impedance | Low impedance optimized for submerged arc operation |
| Cooling Method | ONAN (Oil Natural Air Natural) / OFWF / ODWF (oil forced water forced) |
| Connection Group | Yd11, Dd0, or customized |
| Frequency | 50 Hz / 60 Hz |
| Overload Capability | Strong overload performance for continuous heavy-duty operation |
| Other Characteristics | High mechanical strength windings, excellent short-circuit withstand, low losses |
| All parameters can be tailored to your iron alloy, calcium carbide, or other ore smelting furnace requirements. Professional customization service is provided. |
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Packaging, Warranty & Certifications Packaging：
Robust export wooden crates or steel frame packaging with moisture-proof and shock-absorbing materials. Professional lifting instructions included to ensure safe sea or land transportation.
Warranty：
Standard warranty of 12–18 months (from delivery or commissioning date), with options for extension. Lifetime technical support and prompt after-sales service.
Certifications & Testing：
Compliant with IEC 60076, IEC 61378, and other international standards. ISO 9001 quality management system certified. CE, UL, or market-specific certifications available upon request. Products meet strict metallurgical industry safety and performance requirements.
