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China Air-Cooled Capacitors for Induction Heating - High-Efficiency Suppliers and Factory 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 a alloy case by immersed with insulation oil like vegetable oil/silicon oil upon different working condition.
| No. | Parameter | Specification |
|---|---|---|
| 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 are the primary applications of these air-cooled induction heating capacitors?
These capacitors are widely used for tuning the circuits of induction heating furnaces in metalworking processes like melting, casting, tempering, annealing, welding, and forging. They are also suitable for harmonic AC filtering, high voltage DC filtering, and high voltage energy storage.
What is the voltage and frequency range of these capacitor banks?
The special power capacitor banks are designed to operate within a voltage range of 750V to 3000V, supporting induction heating frequencies up to 3kHz.
What materials are used in the construction of the capacitors?
They feature a polypropylene film dielectric and aluminum foil electrodes in a non-inductive construction. The pack is encapsulated in an aluminum alloy case and filled with insulating oil (PEPE, non-PCB).
What are the environmental requirements for operating these capacitors?
They should be installed indoors at an altitude of up to 1000 meters. The environment must be free from severe mechanical vibration, harmful gases, vapors, and conductive or flammable dust. The allowable ambient temperature is between -25°C and +50°C.
What cooling modes do these air-cooled capacitors support?
Depending on the specific design and practical installation requirements, they can operate using either a forced-ventilation mode or a natural-cooled mode.