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Main process parameters of 1T induction melting furnace
Rated Capacity | t | 1 | ||
Maximum capacity | t | 1.5 | ||
Iron temperature | °C | 1450~1 8 00 | ||
Melting power consumption (hot furnace, molten steel) | Kwh/t | 540 ±5% in the case of pure melting . | ||
Melting consumption (heating furnace, iron water) | Kwh/t | 510 ±5% in the case of pure melting . | ||
Melting rate (steel water) | h/t | 1.4 | ||
Cold but water | Influent flow | M3/h | ≥ 55 | |
Inlet pressure | MPa | 0.3 | ||
Inlet temperature | °C | ≤32 | ||
Return water temperature | °C | ≤52 | ||
Tilting method | Hydraulic tilting | |||
Rectifier transformer | Product number | ZS -type | ||
Voltage combination | 10KV/380V/380V Secondary side Δ /Y double winding, star winding midpoint extraction | |||
Transformer capacity | KVA | 1000 | ||
Primary voltage | KV | 10 ±5% KV | ||
Secondary voltage | V | 380 × 2 | ||
Phase | Primary side 3 phase ; secondary side 6 phase connected to intermediate frequency power supply cabinet | |||
frequency | HZ | 50 | ||
Connection group | DdOY11 ( secondary side line voltage phase difference of 30 ° ) | |||
Short circuit impedance | ≥ | 9% | ||
cooling method | ONAN , cooling medium: 25th transformer oil | |||
Pressure regulation method | Automatic non-excitation voltage regulation , | |||
effectiveness | ≥ | 98%, | ||
Executive standard | JB/T8636-1997 "Power Converter Transformer" | |||
Rectifier transformer The rectifier transformer is used to reduce the primary high voltage to the input voltage suitable for the intermediate frequency power supply. The device uses a dedicated high-impedance oil-immersed self-cooling rectifier transformer, the model is ZS series. The primary voltage of the transformer is 10KV and the secondary voltage is 380V . The rectifier transformer is equipped with a gas relay and a oil temperature relay table, which can be interlocked with the high voltage cabinet. When the transformer has gas or oil temperature exceeding the standard, the high voltage input can be automatically cut off and an alarm is issued. | ||||
Intermediate frequency power supply | rated power | KW | 8 00 | |
DC voltage | V | 102 4 | ||
DC | A | 877 | ||
Number of commutating pulses | pulse | 12 | ||
cold but water | Influent flow | M3/h | ≥ 25 | |
Inlet pressure | MPa | 0.25 | ||
Inlet temperature | °C | ≤ 32 | ||
Return water temperature | °C | ≤ 42 | ||
IF voltage | V | 2400 | ||
IF frequency | Hz | 1000 can be fine-tuned | ||
Power factor | COS φ | ≥0.95 for any power usage | ||
Inverter form | Series inverter | |||
noise | dB | 85dB | ||
Starting success rate | 100% |