Instruction manual of water-cooled capacitor for induction heating application
-
1
1. Application Scope:
The capacitor is suitable for a controlled or adjustable AC voltage system, and specifically dedicated to improve power factor and circuit property in applications such as induction heating, melting, agitating, casting etc. -
2
2. The Significance of Model:
The data is from the latest inspection report assessed by independent third parties.
-
3
3. Electrical Formula:
Good teams in Design, provide 3D drawings within 24 hours. Customers can send us draft or pictures needed and our design team can work on the CAD files for confirmation.
-
4
4. Product Technical Features
4.1 The whole membrane structure with automatic folding aluminum foil.4.2 Biodegradable and high dielectric impregnant with insulation oil (non-PCB).4.3 The shell could be insulation and non-insulation for options. -
5
5. Main Technical Performance:
5.1 Product Standard: GB/T3984.1-2004/IEC60110-1:19985.2 High dielectric strength:2* AC(or 4* DC) lasting 10 sec.5.3 Breakdown test to shell withstanding 2.5* AC(at least 2000V) lasting 10 sec.5.4Tolerance Range of Capacitance:less than -5%～+10% of the rated value.5.5 Capacitor loss tangent value（tgδ）is less than 0.0008 under rated voltage AC.5.6 Cooling pipe seal test: air pressure 1Mpa lasting 2 min.
6
6. Operational requirement
| Places Installed | Indoors |
| Altitude Applicable | Less than 1000m |
| Ambient Temperature | -20 /+50℃ |
| Capacitance Tolerance | -5/+10% |
| Maximum Voltage Allowable | Rated Voltage × 1.05 |
| Maximum Current Allowable | Rated current × 1.15 |
| Dielectric Materials | polypropylene film |
| Insulating Oil | PEPE (Non-PCB) |
| Cooling Mode | Water cooling or air cooling (forced ventilation cooling should be introduced with air speed no less than 4m/s.) |
| Cooling Water Quality | Soft water which is free of impurities shall be used with PH value in a range of 6 to 9 |
| Cooling Water Flowrate Requirement in Relation with Capacity | Minimum Flowrate（L/min） Capacity（KVAR） 3 less than 500 6 500 to 800 8 800 to 1500 10 more than 2000 |
| Water Pressure Required | About 2.5〜3.5kg/cm2(maximum 10kg/cm2) |
| Inlet Water Temperature Required | ≥ 35℃ |
| Outlet Water Temperature Required | ≥ 45℃ |
| Case Material | Aluminium Alloy Sheet with 3mm Thickness |
| Pressure Switch | Normally closed (NC) type OFF 0.08Mpa ON 0.05Mpa |
| Installation Mode | Vertically Installed |
| Maximum Tightening Torque | 15N·m |
| Minimum Space Required among Capacitors or other | Minimum 5 cm |
| Connecting Lead | No excessive mechanical stress act on terminals during installation and transportation. |
-
7
7. Maintenance of Capacitor:
7.1 If you need to service capacitor after switch off, you must discharge the capacitor first in order toprevent damage caused by the residual voltage.7.2 Water freezing in the cooling pipe will lead to damage of capacitor.So when the temperature is under 0 ℃, you should take relevant measures to prevent water frozen.7.3 Clean the capacitor’s porcelain insulator regularly to prevent the leakage or short circuiting.7.4 The nut will become loosen because of heat expanding and cold contracting.So check the nut to seewhether tightened after downtime everytime.7.5 Porcelain insulator should be kept intact and cannot be used for transportion purpose.
