The induction furnace transformer steps the plant voltage to the rectifier input of a medium-frequency melting system. It is specified with the power supply, the pulse count and the furnace power, including multi-pulse supplies for large furnaces.
Technical Data
| Standard on the factory sheet | American standard for the same duty |
|---|---|
| GB 5959.3-2008 | NFPA 86 |
| GB/T 10067.1-2005 | NFPA 86 and NFPA 70 |
| GB/T 10067.3-2005 | NFPA 86 |
| GB/T 10066.1-2004 | NFPA 86 test practice |
| GB/T 10066.3-2004 | NFPA 86 induction test practice |
| JB/T 4280-2004 | IEEE C57.12.00 / ANSI C57 |
| 24-pulse, 25 t energy-saving furnace, national furnace inspection | IEEE 519 for the 24-pulse rectifier |
| US standard | Applies to |
|---|---|
| IEEE C57.12.00 | General requirements for liquid-immersed distribution and power transformers |
| ANSI C57 | US transformer series used with IEEE C57 |
| IEEE 519 | Pulse transformer / phase-shift duty for 12-pulse and 24-pulse rectifiers |
| NFPA 70 (NEC) | Primary protection and grounding |
Every figure in these tables is taken from the factory sheets in the product folder and is written in English. 1 metric ton = 1.102 US short tons. Power-supply ratings can still be negotiated to the customer requirement, as the sheet itself states. American standards are the US specifications normally requested with this equipment.
Key features
- Matched to KGPS rectifier voltage and pulse count
- Used on new furnaces and on rectifier upgrades
- Custom voltage, frequency of the grid, and vector group
- Part of the 24-pulse supply arrangement used on large energy-saving furnaces
Construction
- Core, windings, terminals and the cooling method required by the installation.
Working principle
The transformer isolates and sets the voltage that the rectifier expects. On 12-pulse and 24-pulse supplies it also provides the phase shift.
Applications
Steel, cast iron, stainless steel, copper, aluminum, aluminum alloy, brass and other non-ferrous metals.
Complete system integration
This equipment sits in the same line as the power supply, the capacitor bank, the induction coil, the magnetic yoke, the furnace body and the cooling system. A quotation can cover one item or the full line.
Customization
Capacity, voltage, frequency, dimensions and connection layout can be made to the furnace design. Send the drawing or the duty data below.
Catalog sheets
Questions before a quotation
Can the rating be customized?
Yes. Capacity, voltage, frequency, tube size and connection layout follow the furnace drawing and the metal.
What do you need for a quotation?
Furnace capacity, metal, melting temperature, melting rate, working hours, input voltage, frequency if known, tilting method and cooling-water conditions. A drawing helps.
Do you supply a single machine or the complete system?
Both. A spare coil, yoke, capacitor or cooling tower can be quoted alone. A new foundry line is quoted as a complete system.
Which metals can be melted?
Steel, cast iron, stainless steel, copper, aluminum, aluminum alloy, brass and other non-ferrous metals. The lining and the frequency follow the alloy.
Will you confirm the catalog numbers before manufacture?
Yes. The sheets on this page are the factory catalog for selection. The quotation states the rating that will be built.