| Electronics > Power/Renewable Energy/EV's |
| Neutral line fault detector NFP-1801? |
| << < (7/7) |
| f4eru:
Seems like an LC network, i.e defined impedance that is connected between neutral and PE ? then it triggers an RCD if the neutral deviates from PE. Works only of course if the defect is after the bonding point, or if the PE comes from a separate earth rod... Could it be that the LC is tuned to 50Hz, so that normal sine does not pass, but HF/harmonics of DC will trigger the RCD ? I would have expected more like a 25V VDR or so. In any case, it's probably not nice, because injecting currents into the RCD can make it inefficient against it's original purpose.... |
| excrucio:
--- Quote from: f4eru on Yesterday at 07:16:40 pm ---injecting currents into the RCD can make it inefficient against it's original purpose.... --- End quote --- there is no current until it is N fault, and when it is it is not big. so rcd works as it is intended |
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