DETUNED REACTOR- MRA

MRA reactors are filters for harmonics, used to prevent resonances occurring, which are extre- mely dangerousness situations for the electric system because of the ensuing overcurrents and overvoltages (see considerations under “HARMO- NICS” in the chapter “GUIDE TO OPERATIONS AND CHOOSING UNITS”). The “block” reactors are used with the sole pur- pose of correcting the power factor of the loads generating harmonics; the filter is therefore tuned only to a single frequency below the

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