Industrial Capacitor Applications

Capacitors play a crucial role in the electrical industry today, especially in factories, with one of their most important functions being power factor correction.

Within a production line, numerous induction motors exist, which, due to the characteristics of induction motors, increase the reactive power consumption of the factory.

Reactive power is power that is consumed but does not perform useful work. Nowadays, with the use of smart meters capable of measuring both reactive and active power, for industrial and domestic purposes, consumers are obligated to pay for both active and reactive power consumption.

One of the primary methods to reduce reactive power in factories and household consumption is the use of capacitors as power factor correctors.

Industrial capacitors are usually divided into two groups:

1. Low-pressure capacitors

2. Medium-pressure capacitors

Weak Pressure Capacitors

Weak pressure capacitors, produced cylindrically, have voltages less than 1000 volts. They are available in two models: single-phase and three-phase capacitors, with capacities ranging from 2.5 to 30 kilowatts. Weak pressure capacitors are used for power factor correction, as they have the capability to reduce losses in weak pressure networks and save energy. Additionally, they are utilized for voltage improvement and regulation to prevent equipment damage by maintaining stable voltage levels.

Medium Pressure Capacitors

Medium pressure capacitors have voltage levels exceeding 1000 volts. At this voltage level, capacitors are produced in an oil-filled design, available in both three-phase and single-phase models. The most important properties of capacitors include nominal voltage, frequency, ambient temperature, and kilowatts. Single-phase capacitors are manufactured in various dimensions and kilowatt ratings.

Industrial Capacitor Applications

Signal Processing:

To prevent damage during the shutdown of systems separated from a power source, electric load capacitors are used to provide the necessary electric load for the system.

Motor Starter:

Another prominent application is to prevent delays, correct power factor, and filter out waves generated by AC/DC converters.

HVAC (Heating, Ventilation, and Air Conditioning):

It is possible to find this component in some oscillation circuitry.

Electronic Boards:

Utilized to eliminate noise generated in copper traces.

Energy Storage:

This component is used in places where delay applications are needed.

Additionally, it acts as a sound filter or is used to eliminate DC voltage from audio signals.

Digital Memories

Pulse Power


Types of Industrial Capacitors in the Iranian Market:

– PKC Capacitor

– Frako Capacitor

– Lifasa Capacitor

– Pars Capacitor

– Pars Fanal Capacitor

– Chint Capacitor

– ISBS Capacitor

PKC Capacitor

The PKC capacitor is composed of two metallic plates with a layer of air or other insulators placed between them, used to store electrical energy through an electrostatic field in the circuit. PKC capacitors play a crucial role in creating a durable electric field. The main feature of PKC capacitors is their high power capacity for energy storage, making them widely used in the production of various electronic devices such as radios and televisions. The PKC capacitor acts as a filter in electronic components, allowing alternating signals to pass through easily while blocking direct signal passage

Frako Capacitor (Germany)

Frako from Germany is one of the best and most reputable brands in the field of weak pressure capacitors. These capacitors are made of a combination of dry mineral granules with an aluminum body and electrodes. It can be said that Frako capacitors exceed international standards in terms of voltage tolerance, temperature resistance, and overload current. Moreover, with mechanisms such as self-healing and pressure disconnectors (T-disconnector) alongside its main function of reactive power compensation, Frako capacitors provide high safety for capacitor banks and industrial units.

Lifasa Capacitors (Spain)

Lifasa Capacitor Company began its operations with lighting capacitors in Spain in 1949 and has since become one of the renowned brands in the field of power factor correction equipment worldwide.

Pars Capacitor

The Pars capacitor is an electrical component used for storing electrical energy, which can be utilized in a circuit after energy storage by the capacitor. A capacitor can store electrical charge or energy within itself. One of the industrial applications of capacitors is for power factor correction in networks.

Pars Fanal Capacitor

Pars Fanal capacitors can store electric charge and energy within themselves, which can then be used in a circuit after energy storage.

Among the industrial applications of capacitors, power factor correction in networks is noteworthy.

Fanal Germany was established in the 1970s by Westinghouse Electric Corporation in Germany and began production and operations under this name.

ISBS Capacitor

ISBS Capacitor Company, a pioneer in the production and supply of industrial automation and electrical products, has become one of the best brands in the field of industrial electrical equipment.

The ISBS capacitor has an electronic and microprocessor-based structure, enabling control and command for capacitor bank switching.

ISBS is one of the premier manufacturers of industrial electrical equipment, registered as an Iranian brand, with its production taking place in China.

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