| Brand | ROCKWILL |
| Model NO. | High-Stability Ladle Refining Furnace Transformer-35kV |
| Rated frequency | 50/60Hz |
| Series | HJSSPZ |
Ladle refining furnace transformer is a specialized electric furnace transformer engineered for LF (ladle furnace) refining processes, delivering stable low-voltage, high-current output with minimal arc fluctuation. Equipped with precision on-load voltage regulation, it accurately matches the dynamic power requirements of arc heating, vacuum degassing, and composition adjustment stages.
The robust short-circuit withstand construction and forced oil circulation cooling system ensure reliable continuous operation under the high-temperature, high-duty-cycle conditions of secondary steelmaking. Each unit undergoes full type and routine tests to guarantee long-term operational safety.
Ladle refining furnace transformer feature
Specifically designed for ladle refining furnaces, it can accurately match the dynamic power requirements of refining processes such as arc heating and vacuum degassing, ensuring stable power supply for steel heating, composition adjustment and other links.
Equipped with a wide-range voltage regulation function, it can achieve smooth adjustment according to the different power requirements of refining stages (such as heating, stirring, heat preservation), improving energy utilization efficiency and refining quality.
Adopting a structural design with strong short-circuit resistance, it can withstand the inrush current generated by instantaneous electrode short circuits during refining, reducing the risk of equipment failure.
Equipped with an efficient cooling system (such as forced oil circulation air cooling), it can adapt to the large amount of heat generated by long-term high-load operation of the refining furnace, ensuring continuous and stable operation of the equipment.
It has excellent insulation performance, can operate reliably in high-temperature, dusty steelmaking environments, and is easy to maintain, adapting to the strict requirements of continuous production in iron and steel enterprises.
| Model | Rated Power (kVA) | HV (kV) | LV (V) | Cooling | Impedance (%) | Regulation |
|---|---|---|---|---|---|---|
| HJSSPZ-2400/10 | 2400 | 10 | 200–104 | ONAN | 6–7 | ±8×2.5% |
| HJSSPZ-5000/10 | 5000 | 210–121 | ONAF | 7–8 | ||
| HJSSPZ-7000/35 | 7000 | 35 | 220–145 | ONAF/OFAF | 7–8 | |
| HJSSPZ-10000/35 | 10000 | 240–121 | OFAF | 8 | ||
| HJSSPZ-18000/35 | 18000 | 344–231 | OFAF | 8–9 | ±13 levels | |
| HJSSPZ-25000/35 | 25000 | 260–150 | OFAF | 8–9 | ||
| HJSSPZ-44000/35 | 44000 | 464–366 | OFAF | 9–10 |
Ambient temperature: −25 °C to +45 °C
Altitude: ≤ 1000 m (de-rating required above 1000 m)
Relative humidity: ≤ 90% (non-condensing)
Installation: Indoor (with ventilation) or outdoor (weatherproof enclosure)
Seismic withstand: 0.2 g (horizontal), 0.1 g (vertical) per GB/T 13540
The ladle refining furnace transformer is a special transformer designed and manufactured according to the characteristics of ladle furnace refining processes. It needs to meet the requirements of refining furnaces for heating rate, precise voltage adjustment, and stable operation.
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