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High Efficiency Induction Furnace Capacitors from China Suppliers - Custom Factory Solutions for Induction Heating
Brief Instruction
We custom the induction furnace capacitors specially for improving the power factor or loop characteristics of induction heating, melting, stirring or casting and related induction heating /melting applications in controlled or adjustable AC voltage systems with normal voltages or greater than 4kV, medium frequency, high frequency induction heating power system ranged 0.5khz~300Khz.
These induction furnace capacitor play a crucial role in enhancing the performance and efficiency of induction heating/melting applications, especially in environments requiring controlled AC voltage. The robust design and high frequency, high current, high power, specifications make them a reliable choice for medium frequency induction heating furnace focused on improving their operational effectiveness.
Types of Capacitors used in induction heating furnace and Their Benefits:
Water-Cooled Capacitors: Water-cooled capacitors are essential for high-frequency induction heating systems which could effectively dissipate the heat generated by the capacitor itself, preventing overheating and ensuring reliable operation.
High-Voltage Film Capacitors: Some induction furnaces, particularly those used for melting, operate at high voltages. High-voltage film capacitors are specifically designed to withstand high-voltages and prevent breakdown, and to the power supply system for DC filter circuit. The high-voltage film capacitors are popular used in induction heating systems due to their ability to handle high currents and frequencies.
Product Features
- High Voltage Rating: Capable of handling nominal voltages up to 5kVAC, making them suitable for high-power applications.
- Frequency Ranges: Designed to operate efficiently at high frequencies like 500Hz, 1000Hz, 1500KHz, 2000Hz, 3000Hz, 4000hz normally, max 300khz, ensuring compatibility with various induction heating processes.
- Durability: Built to withstand harsh indoor high temperature environments, ensuring longevity and reliability.
- Built-in cooling tubes: Integrated tubes for capacitor cooling down.
Capacitor Construction
Dielectric Material
Typically constructed with high-quality Film dielectric and foil as internal electrode that enhance performance and reduce losses.
Encapsulation
Filled in insulation oil, no PCB. The whole encapsulated process must be handled in high-level workshop (e.g., core winding in dust-free workshops, and oil filling in vacuum environment) to provide protection against environmental factors like moisture and dust.
Terminals/Tabs
Equipped with robust copper terminals and insulation bush for secure connections and overcurrent capacity, facilitating ease of installation and maintenance.
Built-in Water-pipes
Features built-in cooling water pipes to maintain proper operating temperatures.
Operation Condition
- Indoor use
- Installation Altitude compliable: not exceed 1000m
- Indoor temperature: -40 ~ 50℃
- Maximum voltage applicable: Rated Voltage × 1.05
- Maximum Current applicable: Rated current × 1.15
| Minimum Flow Rate | Output Power Range |
|---|---|
| 3 L/min | output less than 500 Kvar |
| 6 L/min | output 500~800 Kvar |
| 8 L/min | output 800-1500 Kvar |
| 10 L/min | output more than 2000 Kvar |
- Inlet pressure of cooling water shall not exceed 0.4Mpa, inlet water temperature shall not exceed 30℃, flow rate of cooling water shall not be less than 6L/min, cooling water shall be soft water without impurities, PH value at 6 ~ 9.
- Inlet pressure of cooling water shall not exceed 0.4Mpa
Reference induction furnace capacitor specification
Model: RFM 0.75-1500-0.5S
Technical Parameter (RFM 0.75-1500-0.5S) - Electrical Specifications
| No | Description | Unit | Data |
|---|---|---|---|
| 1 | Rated capacity | Kvar | 1500 Kvar |
| 2 | Rated voltage | VAC | 750 VAC |
| 3 | Frequency | hz | 500 Hz |
| 4 | Rated Current | Amps | 2000 A |
| 5 | Capacitance | microfarad | 849 uf |
Technical Parameter (RFM 0.75-1500-0.5S) - Physical & Mechanical Specifications
| No | Description | Unit | Data |
|---|---|---|---|
| 1 | Terminal/Tab | mm | M12 |
| 2 | water tubes | Nos | 1 |
| 3 | output water temperature | C | Max 45C |
| 4 | Flow rate of cooling water | L | 6 L/Min |
| 5 | Discharge resistor / Pressure switch | - | None |
| 6 | Dielectric Medium | - | All-film polypropylene / aluminum foil |
| 7 | Filling material | - | Insulation oil(PEPE), No PCB |
| 8 | Case Material | - | Aluminium alloy |
| 9 | Dimension | mm | 440*210*450 mm (±3mm) |
| 10 | Max tightening torque | N m | 18 |
Frequently Asked Questions (FAQ)
What are the primary applications of these induction furnace capacitors?
They are designed specifically to improve the power factor or loop characteristics in induction heating, melting, stirring, casting, and related induction heating/melting systems. They support controlled or adjustable AC voltage systems operating between 0.5kHz and 300kHz.
Why are water-cooled capacitors preferred for high-frequency induction heating?
Water-cooled capacitors feature built-in cooling tubes that effectively dissipate the internal heat generated by the capacitor during high-frequency operation. This prevents overheating and guarantees long-term operational reliability.
What are the cooling water requirements for these capacitors?
The inlet water pressure must not exceed 0.4Mpa, and the inlet temperature should not exceed 30°C. The cooling water must be soft water without impurities, with a pH value between 6 and 9. The minimum flow rate depends on the output power (ranging from 3 L/min to over 10 L/min).
What materials are used in the construction of the capacitors?
They are constructed using all-film polypropylene as the dielectric medium, aluminum foil as the internal electrode, and are housed in an aluminum alloy case. They are filled with insulation oil (PEPE) containing no PCBs.
What are the standard operating limits and environmental conditions?
They are designed for indoor use at altitudes not exceeding 1000m, with ambient temperatures between -40°C and 50°C. The maximum allowable voltage is 1.05 times the rated voltage, and the maximum allowable current is 1.15 times the rated current.