TiraThai, a specialized sub-brand of Jinguan Electric dedicated to transformer and electrical equipment innovations, proudly presents the Electric Arc Furnace Transformers. These robust units are designed for the demanding conditions of electric arc furnaces (EAF), providing high-power, high-current electricity to smelt steel and produce high-quality steel and alloy products. Engineered to handle extreme electrical and thermal stresses, these transformers are critical for metallurgical processes requiring large-scale melting, refining, and alloying, ensuring consistent output and operational reliability.
Jinguan Electric, established in 1979 as a high-tech enterprise in Nanyang City, Henan Province, China, has grown from its roots in arrester manufacturing to a global leader in high-voltage transmission and distribution equipment. Leveraging Industry 4.0 principles, Jinguan Electric drives innovation, with TiraThai as its flagship brand for specialized transformer solutions. This sub-brand delivers customized, high-efficiency transformers tailored for electric arc furnace applications, meeting stringent international standards such as UL, CUL, CCC, CQC, CTQC, CE, and SGS, while adhering to ISO9001 (quality), ISO14001 (environmental), and ISO45001 (health & safety) certifications.
TiraThai’s Electric Arc Furnace Transformers feature on-load tap changing (OLTC) for precise voltage regulation under fluctuating loads, with options for no-load tap changing in smaller units. Designed for high-impedance and high-current outputs, they support furnace capacities from small-scale alloy production to large-scale steel smelting. Customizable for primary voltages up to 110kV and secondary voltages tailored to furnace electrodes, these transformers accommodate 50/60Hz grids worldwide. TiraThai’s design philosophy—"dig 100 meters deep in 1 meter of space"—reflects Jinguan Electric’s precision engineering, ensuring durability, energy efficiency, and seamless integration into metallurgical workflows.
Transformer Model: Custom EAF Series Primary Voltage Ratings: Up to 110kV (Customizable) Secondary Voltage Ratings: Customizable (High-Current Output for EAF Electrodes) Rated Capacity: 1000-50,000kVA (Customizable) Rated Frequency: 50/60Hz
This flexibility makes TiraThai’s Electric Arc Furnace Transformers essential for modern steelmaking, delivering stable power for high-yield, high-quality production.
Key Features and Engineering Excellence
TiraThai’s Electric Arc Furnace Transformers are engineered to meet the rigorous demands of steel smelting, combining high power capacity with advanced control features. The transformers incorporate on-load tap changers (OLTC) for real-time voltage adjustments, ensuring stable arc performance during dynamic furnace operations. High-impedance designs minimize short-circuit currents, enhancing equipment longevity, while robust cooling systems—Oil Natural Air Natural (ONAN) with optional Oil Natural Air Forced (ONAF)—manage thermal loads from continuous high-current outputs, maintaining insulation integrity at Class A (105°C rise) or optional H-class (180°C).
The core is constructed from high-grade grain-oriented silicon steel with 45° miter joints, optimized for low hysteresis and eddy current losses, achieving efficiency above 98%. Oxygen-free copper windings with main-longitudinal insulation withstand extreme electrical stresses, supporting overloads up to 150% for short durations. The coaxial high-current output system ensures stable power delivery to furnace electrodes, minimizing voltage fluctuations and arc instability. Integrated fault detection and pressure relief systems enhance safety, protecting against overcurrent and thermal runaway in harsh smelting environments.
Jinguan Electric’s automated production lines, featuring precision core stacking, vacuum oil-filling, and robotic welding, ensure defect-free assembly. Optional smart features, such as computer-controlled tap changing and temperature monitoring via PT100 sensors, enable integration with automated furnace systems, optimizing melt consistency. The transformers’ compact design and low noise levels (under 65dB) facilitate installation in industrial facilities, while corrosion-resistant tanks and eco-friendly oil options align with environmental standards. Compared to legacy models, TiraThai units reduce energy losses by 15-20%, improving furnace throughput and operational cost savings.
These features exceed IEEE/ANSI, IEC 60076, and GB/T standards, delivering reliable, high-performance power for global steel production.
Technical Specifications
TiraThai’s Electric Arc Furnace Transformers are tailored for metallurgical precision, with customizable specifications to match furnace requirements. Below is a detailed table of key parameters, validated through Jinguan Electric’s certified testing and compliant with UL, CE, SGS, and ISO standards.
| Parameter | Specification Details |
|---|---|
| Rated Capacity (kVA) | 1000-50,000 (customizable, e.g., 10,000kVA for large furnaces) |
| Primary Voltage (kV) | Up to 110 (e.g., 35kV, 66kV, customizable) |
| Secondary Voltage (V) | High-current output (e.g., 100-1000V, customizable) |
| Voltage Regulation | OLTC (±8×1.25% or custom); no-load tap optional |
| Impedance Voltage (%) | 6-10% (high-impedance, customizable) |
| Connection Type | Dyn11 or YNd11 (customizable for phase balance) |
| Core Material | Grain-oriented silicon steel (45° miter joints) |
| Winding Material | Oxygen-free copper (main-longitudinal insulation) |
| Insulation Class | Class A (105°C rise); H-class (180°C) optional |
| Cooling Method | ONAN; ONAF optional for high loads |
| No-Load Loss (W) | Optimized (e.g., 10,000kVA: 15,000) |
| Load Loss (W, at 75°C) | Optimized (e.g., 10,000kVA: 80,000, copper-optimized) |
| Short-Circuit Withstand | 50kA / 2s (robust overload capacity) |
| Noise Level (dB, 1m) | ≤65 at full load |
| Enclosure Protection | IP54 (industrial-grade, corrosion-resistant) |
| Efficiency (%) | >98 at full load |
| Frequency (Hz) | 50/60 |
These specifications support operation in ambient temperatures from -20°C to +50°C and altitudes up to 1000m, with full type testing for thermal, dielectric, and short-circuit performance. Custom options include high-BIL designs for surge-prone grids.
Applications and Performance Benefits
TiraThai’s Electric Arc Furnace Transformers are critical for steelmaking and alloy production, powering electric arc furnaces in industries ranging from heavy manufacturing to specialty metallurgy. In large-scale steel plants, they drive high-power smelting of scrap and raw materials, producing high-quality carbon and stainless steels with reduced impurities. For alloy production, the transformers support precise melting of nickel, titanium, and other specialty metals, ensuring uniform composition for aerospace and automotive components.
Smaller furnaces for boutique alloys or R&D benefit from customizable low-capacity units, enabling pilot-scale production with high precision. The OLTC and high-current output stabilize arc performance, reducing electrode wear by 10-15% and improving melt consistency. Industrial deployments show energy savings of 15-20% compared to older transformers, with MTBF exceeding 60,000 hours, minimizing downtime in continuous operations. The robust design withstands frequent load cycling and thermal shocks, ideal for 24/7 smelting schedules.
In renewable-integrated steel plants, these transformers handle variable grid inputs, supporting green steel initiatives. Jinguan Electric’s global installations demonstrate 99.9% uptime, with seamless compliance for exports to North America, Europe, and Asia, enhancing furnace productivity and material quality.
Why Choose TiraThai by Jinguan Electric?
TiraThai, as Jinguan Electric’s sub-brand, delivers specialized EAF transformers backed by 45+ years of innovation. Our units offer unmatched customization for furnace-specific needs, high-impedance reliability, and OLTC precision, outperforming standard models. With global certifications (UL, CE, SGS) and eco-friendly designs, we ensure 20% cost savings and higher yields, fostering partnerships in global metallurgy.
Expanded FAQ Section
How are TiraThai transformers shipped internationally? Shipped via sea, rail, or truck for global delivery. Main body in bulk packaging for stability, accessories in wooden cases to withstand transit stresses.
Can TiraThai products be customized? Yes, tailored for voltage, capacity, impedance, and furnace specifications through Jinguan Electric’s engineering expertise.
What warranty do you provide? At least two years comprehensive coverage for defects, performance, and materials, with extensions for heavy-duty applications.
Is Factory Acceptance Testing (FAT) supported? Standard: Full electrical, thermal, and mechanical tests per unit, with client witnessing in-person or remotely.
Do you provide after-sales engineering support? Yes, Jinguan Electric assigns engineers for installation, furnace integration, troubleshooting, and optimization.
Why are they ideal for arc furnaces? High-impedance, OLTC, and coaxial outputs ensure stable arcs and high-current delivery, reducing electrode wear and energy waste.
Are eco-friendly options available? Yes, biodegradable oils and recyclable tanks align with environmental standards for sustainable steelmaking.
Certifications and Quality Assurance
TiraThai products, supplied through Jinguan Electric, hold UL, CUL, CCC, CQC, CTQC, CE, and SGS certifications, plus mandatory approvals. Certified to ISO9001, ISO14001, and ISO45001, ensuring compliance with IEEE/ANSI, IEC 60076, and GB/T standards for global reliability.
Contact Us Today
Power your steel production with TiraThai’s Electric Arc Furnace Transformers. For inquiries, quotes, or custom designs:
- WhatsApp: +8613037600603
- Email: [email protected] or [email protected]
Our team responds within 24 hours to fuel your metallurgy.
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