Complete set of high voltage shunt capacitor

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Complete set of HV shunt capacitor

1. Introduction

Complete set of HV shunt capacitor is mainly for the increase of power factor in power frequency power system and the improvement of voltage quality, and the decrease of linelosses.

2. Service Environment

Altitude: less than1000m.

Highest temperature: -40℃~+40

Installation andoperation site shall be no conductivity and no explosiveness dust, no harmfulgases and steam, no ferocity mechanical shock.

Installation site:Indoor or outdoor

3. Structure

Complete set of shuntcapacitor consists of shunt capacitor, series reactor, discharge coil, oxidearrester, disconnecting earth switch. Shunt capacitor, lying down or standingon steel frame, is connected according to certain electrical requirement, the devicecan be transported as a whole or parts, easy to installation, and can be equippedwith security net as well as designed and produced in various combination ways uponcustomer’s request, dry type core series reactor is suitable for indoor.

4. Main technological performance

Capacitance deviation:the ratio between measured capacitance and rated capacitance per phase is notmore than 0~+0.5%, the ratio between max. capacitance and min. capacitance amongthree phase is not more than 1.02.

The device is ableto operate under 1.05 times rated voltage for a long time.

The device is ableto operate continuously when the root mean square value is not more than 1.3times rated current. The over current is caused by harmonics and over-voltage.








Zinc oxide arrestor



Dry core reactor



Discharge coil



HV fuse





8.1 Technical parameter for cabinet type shunt capacitor compensation device

8.2  Thechinal parameters for frame type shunt capacitor compensation device

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Q:Capacitance for AC and DC effects?
In the sine wave AC circuit, the current size of the current flowing through the capacitor can be quantitatively calculated. Specifically, the voltage U is in volts (V), the current I is in the unit (A), the capacitance C is expressed by the law (F) (Ω), the frequency of the AC power supply is expressed in Hertz (Hz) units, and the frequency of the AC power supply is expressed in Hits (Hz)
Q:What is the electrolytic capacitor inside?
Electrolytic capacitor is a dielectric of a dielectric electrolyte coating has a polarity, positive and negative can not be connected wrong. Electric capacity (Electric capacity), by the two metal pole, the middle folder with insulating material (medium) composition.
Q:Why some Y capacitor is very small, and some Y capacitor is very large?
At the AC power input, it is generally necessary to add three safety capacitors to suppress EMI conduction interference. AC power input is divided into three terminals: FireWire (L) / Neutral (N) / Ground (G). Between the line of fire and the ground and between the zero line and ground in parallel with the capacitor, generally referred to as Y capacitor. The two Y-capacitor connection position is more critical, must meet the relevant safety standards, to prevent electronic equipment leakage or chassis charged, easy to endanger personal safety and life.
Q:Is the capacitor attached to the carbon foil positive?
Electrolytic capacitors of the positive plate with aluminum foil, immersed in the electrolyte for anodic oxidation treatment, aluminum foil surface will produce a layer of aluminum oxide film, the thickness is generally 0.02 - 0.03μm. This layer of oxide film is positive and negative insulation between the plates.
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.
Q:Capacitance can pass high frequency resistance low frequency principle
This process of current flow will soon end, the specific length of time and the resistance of the circuit and the size of the capacitor, the larger the size of the product the greater the charging time, the shorter the contrary. After charging is complete, the voltage across the capacitor is equal to the size of the DC supply voltage
Q:What is the phase-shifting capacitor, what is the difference between it and the general capacitor
Assuming a capacitor has upper and lower poles, the upper plate is connected with the positive pole, the lower plate is connected with the negative electrode, connected with the power source, the potential difference between the two plates is formed, and the potential difference between the two electrodes is equal,
Q:What is the capacitor, what is the use, where is there?
In the electronic technology, used to consider the wave, phase, straight, bypass, frequency, etc. Almost all of the electronic products, household appliances are the following are some of the capacitor shape.
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:Why does the circuit current gradually decrease when charging the capacitor?
For the ideal capacitor, when the capacitor is charged, as the voltage across the capacitor gradually increases, the charging current will gradually decrease until zero.

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