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The working principle and function analysis of electric heating capacitor

The electric heating capacitor uses a roughened polypropylene film and a high-performance liquid (excluding PCB) as a composite medium, a high-purity aluminum sink as a plate, a porcelain-set copper screw and a cooling water pipe as a lead terminal, an aluminum alloy plate as a casing, and a water-cooled pipe inside. . The shape is mostly a rectangular box structure.

It is mainly used in controllable or adjustable AC power systems with rated voltages up to 3.6kV and frequencies of 50kHz and below. It is specifically designed to improve the power factor of induction heating, melting, stirring or casting equipment and similar applications.

Electrothermal capacitor use conditions
a. The altitude is not more than 1000m indoor installation.

b. The installation site has no severe mechanical vibration, no harmful gases and vapors, and explosive dust.

c. The cooling water inlet temperature does not exceed 30 °C. For capacitors below 1000kvar, the water flow rate is not less than 4L/min, and 1000kvar and above is not less than 6L/min.

d. Long-term overvoltage (no more than 4 hours in 24 hours) does not exceed 1.1UN, and long-term overcurrent (including harmonic current) does not exceed 1.35IN.

Electrothermal capacitor structure
RWF and RFM water-cooled, full-film electric heating capacitors are mainly composed of a core and an outer casing. The heart is composed of equal or unequal numbers of components, and one side of the core (common plate) is welded with a cooling water pipe; the outer casing is made of steel plate or brass plate, and the aluminum plate is welded to the box cover with the inlet and outlet pipes and the casing support. Terminals. In addition to the heart, the outer casing is filled with an insulating liquid with excellent performance.

Electrothermal capacitors are mainly used in induction heating systems to improve power factor or improve loop characteristics.

How electric heating capacitors work
In a sense, capacitors are a bit like batteries. Although the two work in very different ways, they all store electrical energy. If you have already read how the battery works, you should know that the battery has two electrodes. Inside the battery, a chemical reaction causes one electrode to generate electrons and the other electrode to absorb electrons. Capacitors are much simpler, and they don’t produce electrons—it just stores electrons. In this article, you will learn what capacitors and capacitors are in the electronics field. The difference is that the electrothermal capacitor uses a low melting point alloy.


Post time: Aug-06-2018
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