Power supply unit for ESR furnaces
Electroslag melting is used for cakes forming of very high quality with definite features (including electric steel).
Electrode lowered into slag is to be a load: melting process is performed due to current run from electrode to slag. Electrode is a consumable one.
ESTEL supply sources for ESM furnaces are assembled as a rule according to inverter circuit with direct communication. Circuit includes two counter-coupled rectifiers and furnace is to be a load itself. Switching alternatively rectifiers the out voltage can be get with variable frequency 2 to 10 Hz.
Complete set:
- two rectifiers
- cooling system
- control cabinet
- transformer (optional)
Supply sources for ESM furnaces can be manufactured with various parameters. Below are given specifications in terms of one certain inverter.
| Rated power of transformer winding, kVA | 8750 |
| Mains rated frequency, Hz | 50 |
| Mains rated voltage, kV | 10 or 6 |
| Number of mains phases | 3 |
| Inverter rated out voltage, V | 150 |
| Inverter rated out current, A | 50000 (4×12500) |
| Gradual frequency adjustment range at inverter out, Hz | 1÷5 |
| Number of converter phase out | 1 |
| Analog rectification circuit | circular/6-pulse |
| Transformer voltage adjustment | РПН |
| Tension adjustment depth, % | 40 |
| Rectified voltage adjustment range, V | 150÷90 |
| Number of tank stages | 7÷10 |
| Transformer valveside winding voltage, V | 123.4 |
| Rated leanear current of transformer valveside winding, A | 7 217 |
| Short circuit through tension, % | 8 |
| Operation modes | continuous |
| Auxiliary supply voltage, V | 220 / 380 |
| Installation | internal |
| Transformer cooling system | ONAF |
Portfolio
Any questions?
Contact us, we will be happy to answer!
Our clients
