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Help CenterElectric Heating Capacitor RFM0.75-640-8S
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Electric Heating Capacitor RFM0.75-500-2.5SNegotiableMOQ: 1 Unit -
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High Voltage Parallel Capacitor BFM12-200-1WNegotiableMOQ: 1 Unit
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Electric Heating CapacitorRFM0.75-2000-1S、RFM0.75-1000-1S、RFM0.75-750-1S、RFM0.75-2000-0.5SNegotiableMOQ: 1 Unit
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Electric Heating Capacitor RFM0.75-1000-1S、NegotiableMOQ: 1 Unit
Core structure and working principle
RFM type capacitors are composed of two precision parts: the "core" and the "shell". The inner part of the heart is made of coarsened polypropylene film and high-performance liquid (such as diphenylethane, without PCB) as composite media, while the electrode plate is made of high-purity aluminum foil. Some models have self-healing technology, which can quickly restore insulation in case of local breakdown. In order to cope with the heat generated by high-frequency and high current, a cooling water pipe is welded on the side of the common electrode plate of the heart, which must be ventilated for heat dissipation. The outer shell is usually a rectangular box structure, made of aluminum alloy or steel plate bent and welded. The box cover is equipped with inlet and outlet pipes and ceramic sleeve supported terminal blocks, and the interior is filled with insulating liquid to enhance heat dissipation and insulation performance.
Detailed Explanation of Model Meaning
The model code of the RFM series includes key technical parameters, taking the common RFM 0.75-1000-1S as an example:
R: Representative series code, namely electric heating capacitor.
F: Representing the code for liquid media, usually referring to diarylethane.
M: Represents the code for solid media, referring to polypropylene film.
0.75: indicates a rated voltage of 0.75kV.
1000: indicates a rated capacity of 1000kVar.
1: The rated frequency is 1kHz.
S: Tail note number, representing water-cooled type (if B, it represents adjustable).
Different design numbers (such as RFM1, RFM2, RFM3) usually correspond to different shell materials (copper plate, brass plate, or aluminum plate) and outlet sleeve sealing methods to adapt to different installation environments and cost requirements.
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