The inrush current waveform will be generated when precharging the primary side storage capacitor to the input peak voltage. I would expect rather 1 to 2 ms than < 100 us transient duration. It's true of course, that the grid inductance effect can be expected higher than for the 50 Hz fundamental. I guess, the 50A inrush current specification is a maximum value, that will be achieved with a low impedance grid, so the actual peak current can be lower...though the inrush surge current is more like a spike of current lasting about 100us or less.
Not correct for an active PFC supply, where the storage capacitor is charged through the boost inductor. The input filter capacitor will be a few uF maximum.the only thing to stand against it being the resistance of any NTC's (if present), the ESR of the DC Bus Caps, and of course, the line inductance.
Yes, surely. But I won't expect the grid impedance to be much higher than the IEC 725 reference value for 230V/50 Hz power distribution system of 0.4 + j 0.25Ω (the reactance corresponds to 0.8 mH)....so the inductive effect of miles of cable will be felt?
In that context I guess you might be correct.. . . . anyway, i still think that in a typical large , domestic housing estate, where there is no industrys around, that the line inductance could be a few miles of cable which could be significant.
Domestic houses do not comprise equipment which puts significant amounts of capacitance on the mains phases.
...so the inductive effect of miles of cable will be felt?
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