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It is important to choose the contactors, which are widely used in compensation systems, according to the system to be applied. Wrong selection of compensation contactor will cause the system to operate unhealthy in general.

Compensation brings the current and voltage difference to the required angle. In other words, it is the event of bringing the reactive forces that create the negativities in the system close to zero. In this way, unnecessary loads on the network are eliminated. compensation for our country's energy production and cost, which is an application that must be done in order to use energy efficiently It is very important.
Electrical energy in our country is provided by using fossil fuels. Since there are not many resources, the production cost of this energy is quite high. For this reason, we need to use the energy produced in the most efficient way, we need to support our country's economy.

Capacitors used in compensation cause high rated currents and instantaneous high currents as soon as they are activated. This current can cause malfunctions in many devices and electrical systems. For a healthy and regular mains electricity, a discharge resistor should be added to the three-phase system over the capacitor. That's why the produced compensation contactorsare sold with a starting resistor. It will be very costly going forward.

Compensation contactors are used for switching capacitors in compensation panels. Compensation capacitors draw inrush current just like synchronous, asynchronous motors. These short-term currents can be up to 200 times the rated current. This excessive current draw event that occurs at the start can damage many elements used in the compensation panel. For this reason, compensation contactors are produced to withstand very large currents.
Compensation contactors are produced in certain standards. These standards are IEC / EN60947-1 and IEC / EN 60947-5-1. The most important difference that distinguishes the contactors with a rated voltage of 690 V from other contactors is the production standards.

How Does a Compensation Contactor Work?

The new contactors used for compensation also come with the discharge resistors assembled. The power above the rated current drawn at the time of start is not given to the contacts of the contactor in the first stage. The discharge resistors undertake this process first. The resistors, which filter the excess current at the start, give way to the contacts of the contactor after they have finished their operation. In this way, the compensation system works in a healthy way and has a long life.

While selecting the compensation contactor, kVAR values ​​and nominal operating voltages should be taken into account by looking at the labels on the capacitors. Another point is to pay attention to the coil supply voltages of the contactor.