Check the capacitor of the compensation cabinet

How do you calculate a capacitor's life span?

The capacitors' life span is calculated by extrapolating the results of an ageing test. The IEC 61049 standard serves as the reference. The following calculation method is used: The ageing test involves submitting the capacitor to a test voltage greater than the rated voltage for a given period of time at the maximum operating temperature.

Why do we use capacitors?

We use capacitors to supply the reactive power to the inductive receivers and to raise the displacement power factor (Cos ϕ). Summary When an energy supplier supplies reactive power, it overloads the lines and transformers.

When should a capacitor bank be activated?

When the motor is started up: if the motor is started with the help of a special device (resistor, inductance, star/triangle set-up, auto-transformer), the capacitor bank should only be activated after starting the motor. For special motors: you are advised not to compensate these motors (step-by-step motors, two-way motors, etc.). I 0 = 2I

How long can a capacitor last?

The IEC 60831 standard stipulates that the capacitors must be capable of operating for 1,500 hours with a voltage 25% higher than the rated voltage, without any short-circuits occurring and with a capacitance loss under 5%. For example, for a 400 V capacitor, the test is carried out with a voltage of 500 V.

Why do we need power factor correction cabinets?

Because of the growing presence of harmonic currents, it is now necessary to use power factor correction cabinets specifically designed to deal with such overloads.

What types of capacitors can be used to protect a network?

ENERDIS offers solutions adapted to the level of pollution: Standard 400 V capacitors and reinforced 440V or 500 V capacitors recommended for networks with low or average pollution Capacitors with an anti-harmonic inductive circuit for polluted networks Protecting capacitors with anti-harmonic inductive circuits