CMCT45E-MI-XF864 Medium Intensity Aviation Obstruction Lighting System for chimneys/cooling towers

Solution Series No.: CMCT45E-MI-XF864

Chimneys / cooling towers (painted)

Structure Type



Obstruction Lighting Arrangement

  • All obstruction lights in this system are red medium intensity beacons, steady burning 2000cd±25% at nighttime
  • At least three units of red medium intensity obstruction lights are placed near the top level, which is 6m lower than the top edge to avoid chemical emissions and heat generated from the chimney or cooling tower. The quantity on top depends on the diameter of the horizontal plane the lights are placed on.

Standard Reference

  • ICAO Annex 14 Volume I 2018, Appendix 5-3: Medium Intensity fixed-red obstacle lighting system, Type C
  • Aerodrome Design Manual Doc 9157 Part 4
  • FAA 70/7460-1L, Red Medium-Intensity Obstruction Lighting for painted chimneys

Key Points


Operation Time


Illumination Color

1 level

OB Levels

Medium Intensity

Intensity Type

Electric powered

Power Type


Built-in photocell, External photocell, Control box

Control Type



Through built-in dry contacts in OB lights, Through dry contacts in control box

Alarm Via

UPS backup box for AC OB system

Backup Power

Solution Products

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