01
What factors would affect the induction heating capacitor performance?
2024-06-19 10:02:28
The Water cooled Capacitor designed for use in inductive heating & melting plants for power factor improvement. It usually works under high voltage, high current, a significant amount of heat will be generated during the operation, so water cooling system is necessary.
The cause of capacitor failure is complicated, for example, There are many harmonic sources present in the medium-frequency electric furnace grid. If the harmonics are excessively large at the location where parallel capacitors are installed, directly engaging parallel capacitors will often lead to even greater harmonics in the medium-frequency electric furnace grid, posing a significant threat to the safety of the parallel capacitors in the medium-frequency electric furnace.
Therefore, the capacitor fault cause must be investigated and determined base on actual condition. Here are general knowledge about fault analysis for reference only.
| Fault causes | Capacitor Analysis |
| leakage | Poor quality, poor operation and maintenance may cause leaking problem. |
| Shell expansion | Caused by breakdown of some internal components, or capacitor internal decomposition generated gas inside, over-high voltage, over-high frequency, cooling water cut off etc |
| Over-heat | There are several possible reasons, like over-high frequency, over-current (over-high voltage/harmonic in power supply ), poor heat dissipation condition(cooling water cut off，low flow rate of cooling water), the increased dielectric loss. And the loosen terminals may cause overheat for defective connection. If the excessive temperature can't be effectively controlled. You are supposed to exit the equipment. |
| Bushing flashover discharge | Caused by dirty or broken bushing. |
| Unusual sound | Internal fault，insulation breakdown |
| Over-voltage |
|
