Leakage Control Voltage problem is emerging as a challenge for us. A motor is not getting stopped even after pressing emergency push button at field. Motor of 3.7 KW which is for long travel operation of a shuttle conveyor is not getting stopped. Checking results leakage voltage 181V AC in its corresponding power contactor which is enough for contactor pickup of 240V AC rating. Voltage remains after opening connection of 240V common Supply in local push button station. All terminals at this box and its supply panel checked but no abnormality observed. Finally Motor stopped after removing out going control common supply from panel but after few seconds of opening. It indicate that it may be charged voltage in the long run cable but it was not dropping after removing same at field (push button) side. What may be the probable cause and solution ?