Section 71 in The Delhi Metro Airport Express Line, General Rules, 2010
71. Switching on, and off, of traction and power supply distribution.
(1)All traction and power distribution systems shall remain live at all times and shall only be switched off when necessary for maintenance of the equipment or protection of other maintenance activities.(2)Traction supplies shall be switched Oft and off as per instructions of the traffic controller:Provided that in case of emergency after giving information to the traffic controller, traction power controller shall be authorised to switch off the power.(3)All traction and power distribution power systems which have been switched off shall be adequately earthed before any maintenance or repair work is under taken.(4)All maintenance work on high tension distribution network shall be undertaken with the permission of the traction power controller who shall ensure maintaining adequate power supplies for the operation of the Delhi Metro Airport Express Line network under the condition prevailing at that time.
