CIRCUIT ARRANGEMENT OF AN OVERLOAD INDICATOR FOR ELECTRIC MOTORS, IN PARTICULAR FOR USE ON LONGWALL COAL MINERS

摘要

The invention concerns a electrical motor overload indication system, particularly for a longwall machine, equipped with current sensors and an electric regulator, characterised in that the current sensors (3) and (4) are included in the supply circuit for drive motors (1 and 2) and connected with the electric regulator (5); whereas an indicator (11) and a control relay (8) with a switch-off contact are connected with the regulator (5) via a relay (10), whereas the control relay (8) is connected in series with the control circuit.IMAGE