FIELD: electrical engineering.
SUBSTANCE: device has power transformer, conductor, conducting contact surface, area for forming fake short circuit. Conductor is connected to power transformer via measurement unit and contactor. Conducting contact surface links to power transformer via limiting resistance. Area for forming fake short circuit is made in form of uniform layer of powder graphite applied onto conducting contact surface.
EFFECT: steady electric arc at short circuit; reduced number of trials.
1 dwg
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