When choosing switching contactors for capacitors used to compensate the reactive power present in the network, you should bear several aspects in mind
The contactor must be capable of working with:
The contactors offered by DUCATI Energia are specifically engineered to work in these conditions. Select the type of contactor based on the working voltage and effective power (in kVAr) of the capacitor bank to be controlled.
Contactors within banked or group PFC systems are typically in close proximity to low-impedance capacitors that are already charged. The short wire lengths add little impedance to the charge path letting charged, low-impedance capacitors combine with the power source to produce inrush currents that exceed the ratings of normal contactors.
|Part Number||kVAr 50/60 Hz ∂ ≤ 55°C (*)||Aux Contacts||Maximum Operating Frequency – Switching per hour||Electric life with rated load Switching|
|(*) Average temperature over 24h as per standards IEC 70 and 851.|
|230 VAC 50/60 Hz coil for all sizes.
WARNING: The capacitors must be completely discharged before
being energized by closing contacts (max voltage at terminals < 50 V)