(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 on 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 systems which have been switched off shall be adequately earthed before any maintenance or repair work is under taken.
"''"" ,,.1" 111. "I ·• ['111'1 n-= 3(i)l 63
(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 Bangalore Metro Railway network under the condition prevailing at that time.
(5) Emergency Trip System - (a) The Emergency Trip Switches will be used for switching off the DC traction power supply on the line of the particular sections near the Emergency Trip Switch in case of any emergency;
(b) The Emergency Trip System switches are installed at each end of platform in stations, at station control rooms and at cross passages in tunnels. After activating an Emergency Trip System an individual signal is sent to Supervisory Control And Data Acquisition system, and according to a tripping scheme and logic provided, the Supervisory Control And Data Acquisition system shall switch off relevant DC circuit breakers and send signals to indicate that the track section is de-energized.