Power System 10–100MVA, 50Hz/60Hz, Three Phase
Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670
Huajidian 10MVA to 100MVA Special Power Transformers are developed for high-intensity, complex industrial conditions, solving problems such as unstable voltage regulation, weak overload capacity, and poor adaptability of ordinary transformers. Our product range covers capacities from 10MVA to 100MVA, supporting non-standard and customized solutions. They are widely used in core applications such as metal smelting, chemical electrolysis, and energy rectification. All products undergo rigorous R&D, testing, and production processes, ensuring long-term stable and safe operation under high load, high temperature, and strong electromagnetic interference environments.
Strictly compliant with national industry standards such as JB/T85606-1996, JB/T8447-1996, and JB/T9640-1999. Standardized production processes ensure performance meets high-end industrial power supply requirements.
Possesses superior overload capacity, capable of withstanding instantaneous high-load impacts in industrial production. Stable voltage regulation performance prevents power supply fluctuations from affecting production, effectively improving product qualification rates.
Capacity, voltage level, wiring group, cooling method, and voltage regulation method can be flexibly adjusted according to on-site conditions, providing customized solutions for special industrial scenarios.
Supports cooling modes such as oil-immersed self-cooling (ONAN) and forced oil-water circulation cooling (OFWF), adaptable to no-load and on-load voltage regulation, meeting the operational needs of different loads.
Optimized structure and comprehensive anti-interference configuration, suitable for high-dust, high-temperature, and high-load conditions in the metallurgical, chemical, and submerged arc furnace industries, with low failure rate and long service life.
1. Metallurgical Industry: 10MVA to 100MVA Special Power Transformers serve as core power supply equipment for metal smelting and refining, suitable for steelmaking electric arc furnaces, high-quality special steel refining electroslag furnaces, ferroalloy furnaces, yellow phosphorus furnaces, silicon carbide furnaces, etc., providing stable power supply under high-load smelting conditions, ensuring continuous and efficient production operation.
2. Chemical Industry: Adaptable to electrochemical electrolysis production scenarios such as manganese electrolysis and chlor-alkali chemical industry, its stable voltage regulation performance ensures uniform and stable chemical electrolysis reactions, avoiding product quality problems caused by power supply fluctuations.
3. Energy Industry Equipped with various rectifier equipment, providing stable DC power for energy conversion and power transmission, ensuring the smooth operation of industrial power supply systems and transmission equipment.
Applicable to steelmaking and metal smelting; Standard: JB/T9640-1999; Capacity range: 630kVA–4000kVA; Voltage level: High voltage 6~35kV, Low voltage 98V~220V; Wiring group: D-Yd0-11; Cooling method: Oil-immersed self-cooling (ONAN)/Forced oil circulation water cooling (OFWF); Voltage regulation method: No-load tap changer.
Used in the smelting production of ferroalloys, ferrosilicon, and industrial silicon in submerged arc furnaces; Capacity range: 1000kVA–6300kVA; Wiring group: D.d0-12; Cooling method: Oil-immersed self-cooling (ONAN); Voltage regulation method: Manual no-load tap changer.
Custom-designed for electric furnaces used in yellow phosphorus production, conforming to JB/T85606-1996 standard; capacity range: 2000kVA–5000kVA; low-voltage side supports multiple voltage levels including 130V, 142.5V, and 155V, offering excellent adaptability to various scenarios.
Used for remelting and refining high-quality special steel, conforming to JB/T8447-1996 standard; capacity range: 200kVA–3150kVA; low-voltage: 30V–120V; some models are equipped with external saturated reactors, supporting on-load tap changer to meet the high-precision power supply requirements of steelmaking.
Typical Model: ZHSZK-S-4000/10; Applicable to chemical electrolysis and traction drive applications; Rated Capacity: 4000kVA; Voltage Rating: 10kV; Built-in inter-phase reactor, supports on-load tap changer, stable rectification power supply performance.
Typical Model: HCS-S-P-S-3150/35; Designed specifically for calcium carbide furnace production; Rated Capacity: 3150kVA; Voltage Rating: 35kV; Employs forced oil circulation water cooling, supports three-phase/single-phase free selection, suitable for high-intensity calcium carbide smelting production.
In 2025, Huajidian customized a batch of 50MVA special power transformers for a large ferroalloy smelting enterprise in Southwest China, which were used in the enterprise's submerged arc furnace smelting production line. This project involved harsh operating conditions, requiring the equipment to operate at high loads for extended periods, and dealing with issues such as large instantaneous power surges and complex electromagnetic interference.
Based on the specific on-site operating conditions, Huajidian optimized the equipment structure, employing forced oil circulation water cooling technology and high-precision non-excitation voltage regulation configuration, precisely adjusting core parameters such as wiring group and short-circuit impedance. After commissioning, the equipment achieved 99.99% operational stability, effectively resisting instantaneous load impacts during the smelting process and ensuring stable output voltage. This helped customers reduce product defect rates caused by power supply fluctuations by 35% and equipment failure maintenance frequency by 40%, ensuring continuous and efficient production on the smelting production line, effectively controlling production costs, and gaining high customer recognition.
Q1: Does the Huajidian 10MVA to 100MVA Special Power Transformers support full non-standard customization?
A1: Yes. This series of products features non-standard customization as its core advantage. It can flexibly customize core parameters such as rated capacity, high and low voltage, voltage regulation method, wiring group, short-circuit impedance, and cooling method according to the customer's on-site operating conditions and production needs, optimizing the equipment structure and perfectly adapting to various special industrial production environments.
Q2: What industrial scenarios are the 10–100MVA high-capacity models primarily suitable for?
A2: These high-capacity models are designed for large-scale, high-load industrial scenarios, suitable for large-scale metallurgical steelmaking electric arc furnaces, ferroalloy submerged arc furnaces, large-scale chemical electrolysis production lines, yellow phosphorus industrial furnaces, and supporting energy rectification systems. They are suitable for production conditions requiring long-term continuous operation, high load, and high power supply stability.
Huajidian 10MVA to 100MVA Special Power Transformers are all non-standard customized products. Customers must provide the following core technical parameters when placing an order so that both parties can confirm the technical agreement, develop a precise customization plan, and obtain a quote:
1. Transformer rated capacity
2. Rated voltage (high-voltage side and low-voltage side parameters)
3. Voltage regulation method (off-load tap changer, on-load tap changer, etc.)
4. Wiring group requirements
5. Short-circuit impedance parameters
6. Cooling method requirements
Note: The parameters shown on the webpage are for reference only. If there are special technical requirements or operating condition adaptation needs, please communicate with the technical team in advance before placing an order to ensure that the product is fully compatible with the on-site application scenario.
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