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High Efficiency Induction Furnace Capacitors from China Suppliers - Durable Factory Solutions for 500Hz to 300kHz Applications
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 that 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 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, for example, the capacitor core winding process must be completed at dust-free workshops, and the oil filling must be completed at vacuum environment. Often encapsulated to provide protection against environmental factors, including 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
Built-in cooling water pipes
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
- Cooling water Flow rate: Minimum Flow rate (L/min)
| 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 |
7. 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.
8. 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) - Part 1
| 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) - Part 2
| 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 |
| 6 | Filling material | - | Insulation oil(PEPE), No PCB |
| 7 | Case Material | - | Aluminium alloy |
| 8 | Dimension | mm | 440*210*450 mm (±3mm) |
| 9 | Max tightening torque | N m | 18 |
Frequently Asked Questions (FAQ)
What are the primary applications for these induction furnace capacitors?
These capacitors are specifically designed to improve the power factor or loop characteristics of systems used for induction heating, melting, stirring, casting, and related applications in controlled or adjustable AC voltage systems.
Why is water cooling necessary for these capacitors?
Water-cooled capacitors are essential for high-frequency induction heating systems to effectively dissipate the internal heat generated during operation, preventing overheating and ensuring continuous, reliable performance.
What are the key environmental conditions required for operating these capacitors?
They should be installed indoors at altitudes not exceeding 1000 meters, with ambient room temperatures maintained between -40°C and 50°C.
What are the cooling water quality and flow requirements?
The cooling water must be soft water free of impurities, with a pH value between 6 and 9. The inlet water pressure must not exceed 0.4Mpa, and the inlet water temperature must not exceed 30°C. Flow rates range from 3 L/min to over 10 L/min depending on the Kvar output.
Do these capacitors contain PCBs?
No, the capacitors are encapsulated using non-PCB insulation oil (PEPE). The encapsulation and oil-filling processes are conducted in a dust-free workshop under a vacuum environment to ensure high insulation and environmental safety.
What is the maximum allowable voltage and current limit during operation?
The maximum applicable voltage is 1.05 times the rated voltage, and the maximum applicable current is 1.15 times the rated current.