Hi.
I am trying to design railway bogie-mounted equipment (a sleet brush) that will extended down towards the electrified third rail and clean the head of the rail as the train moves. Obviously while the equipment is in contact with the rail it will be electrified and when it is retracted 100 millimetres away it will not be electrified.
My question is if the piece of equipment is completely insulated from earthed bogie, is there a risk of arcing between the equipment and the rail head when it is retracted? Is it possible that it can draw an arc at all? The rail voltage is 750v DC. The sleet brush is insulated by means of a 25mm thick plastic beam and a 25mm air gap to the closest earthed item.
Thanks
I am trying to design railway bogie-mounted equipment (a sleet brush) that will extended down towards the electrified third rail and clean the head of the rail as the train moves. Obviously while the equipment is in contact with the rail it will be electrified and when it is retracted 100 millimetres away it will not be electrified.
My question is if the piece of equipment is completely insulated from earthed bogie, is there a risk of arcing between the equipment and the rail head when it is retracted? Is it possible that it can draw an arc at all? The rail voltage is 750v DC. The sleet brush is insulated by means of a 25mm thick plastic beam and a 25mm air gap to the closest earthed item.
Thanks
