Yes, but not always.Is the capacitor switching or the series arcing in main neutral that causes high voltage transients to damage electronics? Thanks.
Which is the culprit?
Most believe capacitors create no more voltage transient than the voltage they are supplied with. However, when cut off by a switch [contactor], they can retain the supply voltage at that instance. When reconnected, the supply voltage at that instance may differ [nominally] by up to 2 times the nominal AC L-L voltage times the square root of 2 (i.e. maximum swing of instantaneous voltage).An automatic power factor correction panel with contactors, a main power distribution panel with series arcing main neutral and an electronic equipment. The contention from the electronic equipment installer was the electronic equipment was damaged due to high voltage transients generated by switching of capacitors by contactors. My contention is no over voltage transient is possible in a capacitive circuit as in an inductive circuit and so the series arcing main neutral in the main power distribution panel was the cause.
Is the capacitor switching or the series arcing in main neutral that causes high voltage transients to damage electronics? Thanks.
Even with surge arresters of suitable capacity? Thanks.have measured auto switching capacitors making transients that would affect (and shut down) the PLC of air conditioning controls