| 摘要 |
A device for measuring electric current and voltage on board of electric traction railroad vehicles, for providing operating voltage to traction drivers and signals to a power meter, comprises a current sensor arranged on a top portion of an insulating material body, housing a voltage transformer supplying, on a secondary winding thereof, an operating voltage for the traction drivers and including a second secondary winding for measuring voltage with a precision necessary for the energy power, and further including a further winding, electrically integral with the primary winding, for power supplying an electronic card for measuring current, through the current sensor, and for transmitting, through the insulating material body, by an optical fiber and a converter circuit arranged at a bottom portion, an electric signal to the power meter. |
