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A device for the suppression of the currents having a frequency other than that of the network, which are generated by the braking use machines only or polyphase collector having the characteristics of the motor - series by means of auxiliary rheostats
A device for the suppression of the currents having a frequency other than that of the network, which are generated by the braking use machines only or polyphase collector having the characteristics of the motor - series by means of auxiliary rheostats