The general lighitng inside the coaches is provided by 110V DC or 110V AC supply. The supply system is backed up by battery system of 110V DC for self generation type coaches and Emergency battery back up 110V DC or 24V DC system for end on generation system type of coaches. During extreme emergencies like derailment, accidents etc. sometimes these supply system fail, causing total darkness inside the coach. To facilitate easy exit of passengers and their immediate rescue during such emergencies, this Emergency Lighting Unit is developed to provide illumination during failure of all other power supplies inside the coach. These emergency lights are provided inside the coach and on doorways of these coaches, which would switch 'on' automatically in the event of failure of normal supply system. Hence relliability of Emergency Light Unit is if paramount Importance.


  • The emergency light switches 'on' automatically in case normal battery system of the coach fails during any unforeseen circumstances.
  • The system works in extreme dusty, foggy, and desert terrain conditions in certain areas.
  • The system of wiring in the Rolling stock is two wire for 110V dc or 24V dc system.
  • Each emergency unit contains Sealed Lead Acid Maintenance Free type (SMF) Battery of 12Ah capacity.
  • The Emergency Lighting system delivers full output for an initial period of 2 hours and with reduced power for the subsequent 10 hours and shall have sufficient battery capacity of 12 Ah to ensure working of emergency light continuously for 12 hours to provide the required illumination.
  • The battery is charged at 13.5V +/- 0.1V in floating mode.


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