China Suppliers Factory Air-Cooled Capacitors for Induction Heating - 750V to 3000V, High Efficiency Solutions
Brief Instruction
Special power capacitor bank ranged from 750V~3000V are popular designed for tuning the circuit of induction heating furnaces. The induction heating frequency up to 3Khz. Compared to the water-cooled induction heating capacitors, the frequency is quite low, while the capacitance is quite larger. It is suitable for metalworking, such as melting, casting, tempering, annealing, welding, forging etc.
Induction heating uses electromagnetic induction to heat electrically conductive materials. It works by passing an alternating current through a coil, creating a magnetic field that induces eddy currents within the workpiece. These eddy currents generate heat due to the material's electrical resistance. This method is contactless, efficient, and offers precise, rapid heating and eco-friendly. It is a path to a more reliable green energy that paved by induction heating industries. In this edition, Flair electronics explore how to solve energy loss and improve energy efficiency with water-cooled/air-cooled induction heating capacitors.
Constructure
Polypropylene film dielectric / aluminum foil electrode, non-inductive construction assembled into a pack by soldering and electrical connections, encapsulated in an alloy case by immersed with insulation oil like vegetable oil/silicon oil upon different working condition.
| No. | Parameters | Specification Details |
|---|---|---|
| 1 | Dielectric Materials | Polypropylene film |
| 2 | Insulation oil | Insulating Oil PEPE(Non-PCB) |
| 3 | Case material | Aluminium Alloy |
| 4 | Cooling mode | Air-cooled |
| 5 | Altitude | Max 1000m |
| 6 | Installation | Indoor use |
Operating Conditions:
Induction heating air-cooled Capacitors should be installed and operated in an environment that avoids severe mechanical vibration, harmful gases or vapors, and the influence of conductive or flammable dust. The ambient temperature allowed -25~+50 ºC. There will be forced-ventilation mode and natural cooled mode base on design and practical condition.
Flair made Air-cooled capacitors provide solutions in a few specific applications including:
- Harmonic AC filtering
- High voltage DC filtering
- High voltage energy storage
- Utilizing aluminum, stainless steel, and painted steel metal welding etc.
Reference datasheet
| Model | Specification | Cooling method | Voltage | Capacity | Frequency | Capacitance | Current | Terminal Nos | Dimension (mm) | Capacitor Shell | Insulation Bush | Weight | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| kV | kvar | kHz | µF | A | Length | Width | Height | Feature | Material | kg/pc | |||||
| RFM | 0.75-180-1 | Air cooled | 0.75 | 180 | 1 | 50.92958179 | 240 | 2 | 336 | 120 | 215 | Insulation | Aluminium sheet | white porcelain | 12.8 |
| RFM | 0.75-250-2.5(2) | Air cooled | 0.75 | 250 | 2.5 | 28.29421211 | 333.3333333 | 2 | 303 | 115 | 200 | Insulation | Aluminium sheet | white porcelain | 10.4 |
| RFM | 1.0-1244-3 | Air cooled | 1 | 1244 | 3 | 66 | 1244 | 6 | 440 | 140 | 300 | Insulation | Aluminium sheet | white porcelain | 30.1 |
| BFM | 1.05-76-0.05 | Air cooled | 1.05 | 76 | 0.05 | 219.424502 | 72.38095238 | 1 | 336 | 158 | 300 | Insulation | Aluminium sheet | white porcelain | 21.6 |
| RFM | 1.3-1062-2 | Air cooled | 1.3 | 1062 | 2 | 50 | 816.9230769 | 4 | 440 | 165 | 300 | Insulation | Aluminium sheet | white porcelain | 32.7 |
| RFM | 1.7-2260-0.5(4) | Air cooled | 1.7 | 2260 | 0.5 | 248.9205338 | 1329.411765 | 6 | 390 | 205 | 445 | Insulation | Aluminium sheet | white porcelain | 49.8 |
| RFM | 1.7-3000-0.25 | Air cooled | 1.7 | 3000 | 0.25 | 660.8509748 | 1764.705882 | 8 | 440 | 285 | 595 | Insulation | Aluminium sheet | white porcelain | 100.7 |
| RFM | 2.0-1252-3 | Air cooled | 2 | 1252 | 3 | 16.6 | 626 | 3 | 400 | 140 | 280 | Insulation | Aluminium sheet | white porcelain | 22.5 |
| RFM | 1.2-200-0.05 | Air cooled | 1.2 | 200 | 0.05 | 442.0970641 | 166.6666667 | 1 | 390 | 165 | 530 | Insulation | Aluminium sheet | white porcelain | 45.1 |
| RFM | 1.5-200-0.05 | Air cooled | 1.5 | 200 | 0.05 | 282.9421211 | 133.3333333 | 1 | 390 | 165 | 530 | Insulation | Aluminium sheet | white porcelain | 43.4 |
| RFM | 1.7-1500-0.15 | Air cooled | 1.7 | 1500 | 0.15 | 550.7091456 | 882.3529412 | 4 | 440 | 205 | 635 | Insulation | Aluminium sheet | white porcelain | 76.0 |
| RFM | 1.7-1500-0.25 | Air cooled | 1.7 | 1500 | 0.25 | 330.4254874 | 882.3529412 | 4 | 390 | 205 | 615 | Insulation | Aluminium sheet | white porcelain | 64.1 |
| RFM | 2.5-2000-0.15 | Air cooled | 2.5 | 2000 | 0.15 | 339.5305453 | 800 | 4 | 440 | 205 | 730 | Insulation | Aluminium sheet | white porcelain | 83.9 |
| RFM | 2.5-3000-0.3(12) | Air cooled | 2.5 | 3000 | 0.3 | 254.6479089 | 1200 | 5 | 390 | 205 | 615 | Insulation | Aluminium sheet | white porcelain | 65.0 |
Frequently Asked Questions (FAQ)
What is the voltage range and typical application of these power capacitor banks?
These special power capacitor banks range from 750V to 3000V and are specifically designed for tuning the circuits of induction heating furnaces with operating frequencies up to 3kHz.
What materials are used in the construction of these air-cooled capacitors?
They feature a polypropylene film dielectric, aluminum foil electrodes, a non-inductive construction, and are encapsulated in an aluminum alloy case filled with non-PCB insulating oil (PEPE).
What are the recommended environmental conditions for installation?
They should be installed indoors at altitudes under 1000m, with operating temperatures between -25 ºC and +50 ºC. The environment must be free of severe mechanical vibrations, harmful gases, and conductive or flammable dust.
What specific applications do these air-cooled capacitors support?
They are ideal for harmonic AC filtering, high voltage DC filtering, high voltage energy storage, and metalworking processes like melting, casting, tempering, annealing, welding, and forging.
How are these induction heating capacitors cooled?
These capacitors are air-cooled, with support for both forced-ventilation and natural cooling modes depending on the design and practical application requirements.