Water-cooled Oil-filled Capacitor
Role of Capacitors in Induction Hardening Machine
In induction hardening, capacitor is an essential component to form a resonant tank circuit with induction coil. The capacitor must be featured with high Amps withstand-ability and sustainability, as well as tuned to match frequencies from 10 kHz up to 400 kHz depending on required hardening depth.
The water-cooled, oil-filled film capacitor is the most suitable choice. It is designed using non-PCB dielectric liquid impregnant and low-loss PP film to enhance voltage spikes, heavy inrush current, high frequency operation. It is featured with water-cooling design and all-film structure.
To be a professional capacitor manufacturer, we offer oil-filled film capacitor service all over the world. Here is an capacitor solution engineered to the equivalent GE capacitor which is typically made for induction hardening machines. The below capacitor proposal is one of flair typical water-cooled capacitor model RFM0.6-855-9S.
If you are interested in more details about the our capacitor internal design, please click here→ Structure of water-cooled Oil-filled Film Capacitor
Basic Capacitor Data
No |
Description |
Unit |
Data |
1 |
Rated voltage(AC) |
Un |
0.6 kV |
2 |
Rated frequency |
Fn |
9 kHz |
3 |
Capacity |
Kvar |
855 kvar |
4 |
Capacitance |
Cn |
42 μF (+10%~-5%) |
5 |
Current |
In(A) |
1425 A |
6 |
water flow rate |
L/min |
≥6L/min |
7 |
Max.outlet Water temperature |
℃ |
≦45°C |
9 |
Dielectric Loss |
|
<0.5 W/kvar |
Mechanical Properties and Structure
No |
Description |
Data |
1 |
Case Dimension |
343*105*180mm (±3mm) |
2 |
Case Materials |
Aluminium alloy (Non-Magnetic) |
3 |
Terminal conduit |
Compound materials |
4 |
Max tightening Torque |
18N m |
5 |
Dielectric |
All-film |
6 |
Impregnation |
Biodegradable Insulation oil, non-PCB |
7 |
Shell type |
non-Insulated (Live case) |
8 |
Cooling method |
Water-cooling |
9 |
Built-in water tubes Nos |
1 |
10 |
Pressure switch |
No |
FAQ
Q1. What is an oil-filled Capacitor?
Designed using non-PCB dielectric liquid impregnant and BOPP film.
Q2. What is the standard of flair oil-filled capacitor?
Our capacitor compliance with IEC60110-1
Q3. What is the MOQ？
Samall quantity for sample is accepttable
Q4: How to maintain Water-cooled capacitor?
- Monitor Water Cooling: Regularly check the water inlet pressure, temperature, and flow rate. Ensure the cooling water is deionized/distilled to prevent mineral scaling inside the copper tubes.
- Electrical Inspection: Periodically torque the connection busbars to prevent localized overheating from high RF currents. Check for case bulging or oil leaks.
- Dielectric Testing: Regularly measure capacitance values and insulation resistance to detect early dielectric degradation before catastrophic failure occurs.
Factory Video
Outline Drawing
