Alternating current filter capacitor

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Alternating Current Filter Capacitor

(AC Filter Capacitor)



1.    Introduction

AC filter capacitor connected with filter reactor and resistor together form AC filterequipment used for filtering

harmful harmonic current in the power system and the improvement of power factor of the system.



2.    Structure

Take aluminum foilas polar plate and polypropylene film as medium, inside of the capacitor tank isfilled with impregnant.



3.    Service condition

Installation site:  indoor, outdoor, plateau, dump and hot, foalland, etc.

Ambient temperature:-40~ +45

Standard: GB11024 “Shunt capacitors of nominal voltage 1KV and above for AC power systems”.




4. Main parameters


AAM type AC filter capacity (with internal fuse)

kV-Rated Voltage, kVar-Rated capacity, UF-Rated capacitance, kg-Weight


 

 No.                Type                   kV             kvar            uF         kg        W mm     h1 mm    h mm      H mm






AAM type AC filter capacity (without internal fuse)

kV-Rated Voltage, kVar-Rated capacity, UF-Rated capacitance, kg-Weight





AFM type AC filter capacity (with internal fuse)

kV-Rated Voltage, kVar-Rated capacity, UF-Rated capacitance, kg-Weight




AFM type AC filter capacity (without internal fuse)

kV-Rated Voltage, kVar-Rated capacity, UF-Rated capacitance, kg-Weight




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Q:Capacitance can pass high frequency resistance low frequency principle
When the negative half of the alternating current arrives, it will generate the current, first offset the original charge on the capacitor that the opposite charge, continue to charge to full.
Q:What is the use of capacitors?
As a passive component of the capacitor, its role is nothing more than the following; applied to the power circuit, to achieve bypass, decoupling, filtering and energy storage role, the following classification:
Q:How to judge the capacitor is good or bad?
Due to the amplification of the composite transistor, the measured capacitance of the charge and discharge process to be amplified, so that the multimeter pointer increase the amplitude, so easy to observe. It should be noted that: in the test operation, especially in the measurement of small capacity capacitance, it is necessary to repeatedly change the measured capacitance of the pin contact A, B two points, in order to clearly see the multimeter pointer swing.
Q:Low voltage capacitor voltage 0.45 and 0.4 What is the difference between usage
0.45 and 0.4 capacitors are capacitors that rated the line voltage of 0.45kV and 0.4kV; they are suitable for 380V voltage systems, the difference lies in their pressure rating;
Q:On the ground resistance, what role the capacitor
Decoupling: The capacitor used in the decoupling circuit is called the decoupling capacitor. This capacitor circuit is used in the DC voltage supply circuit of the multi-stage amplifier. The decoupling capacitor eliminates the harmful low frequency cross-connection between the amplifiers.
Q:What is the principle of capacitance isolation?
The structure of the capacitor is two plates, separated by a layer of insulator, so under normal circumstances the capacitor is no current through (unless the middle of the insulation was breakdown).
Q:What are the differences between capacitors and capacitors?
Capacitance is a large category, and capacitors are subclasses of capacitors. Capacitors can be divided into cbb capacitors, aluminum electrolytic capacitors, safety capacitors and so on. Different categories, the difference is still relatively large
Q:Use capacitance to do transformer how to calculate
According to this feature, if we connect a resistive element in series with a 1uF capacitor, the voltage obtained at both ends of the resistive element and the power dissipation it generates depends entirely on the characteristics of the resistive element.
Q:Cd capacitance to express what
Generally speaking, no sense of capacitance mainly refers to the IGBT protection with the surge absorption capacitor, it is no sense of the structure. If used to prevent the power grid surge, of course, but it is too wasteful.
Q:How does the capacitor work? What does it do?
Capacitance works: the principle of charge and discharge simply put the capacitor is the two poles charged or discharge, that is, charge diffusion. Charge and discharge capacitors should be connected in series, can be connected in parallel; it is the basis of other properties of capacitance. The phenomenon of intermittent communication is the embodiment of charge and discharge, if it is DC, charged to stop, the capacitor charged; if it is alternating current, is constantly charging discharge. Complete the transmission of AC.

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