Shunt reactor 13 Mvar

Succesfully tested this 13 Mvar 10,5 kV shunt reactor, realized by a three-phase air gapped core for German market.
The technical features requested by client were particular strong, expecially the noise power level fixed in 75 dB(A).
It's wellknown that noise and vibrations are always two difficult targets to reach during design and manufacturing of gapped-core reaactors. Moreover, the noise must be kept constant after a long-time operation, and it requires particular cares during design and also during assembling.
Calculation of impedance and losses is based on a model which was evaluated by Finite Element Analysis