by TWR Lighting Inc.

White flashing obstruction light for reliable day and night time marking of tall structures that present a hazard to aviation. Incorporates the benefits of advanced xenon strobe and system control technology to meet the challenges of the most demanding applications.

Key Features

  • Stand alone design with integrated photocell, power supply, flasher and monitoring
  • Optional external automatic flash synchronization between systems
  • Simple cable connection for easy installation
  • Two year warranty including flash tubes
  • Very low power consumption
  • Simple internal layout
  • Lowest cost of ownership
  • Lowest installation cost (single cable for any size structure)
  • Integrated tilt adjustment mounting bracket

Standards / Certification

  • Certified to United States Federal Aviation Administration AC 150/5345-43F; Specification for obstruction lighting equipment, December 2006, Type L-856 and Type L-857
  • Complies with ICAO Annex 14, volume l; International standards and recommended practices: Aerodrome design and operations, 4th Edition, July 2004, chapter 6.3 High Intensity Type A and Type B obstacle light depending on mode
  • Various national approvals

Performance Characteristics

  • Flashing 40/60 fpm; white (operating modes depending on model)
  • Effective intensity: FAA L-856 model 270,000cd / 20,000cd / 2,000cd nominal
  • Effective intensity: FAA L-857 model 140,000cd / 20,000cd / 2,000cd nominal
  • Horizontal beam coverage = 120°
  • Vertical beam profile: 3° minimum

Electrical Characteristics

  • Operating voltage: 110-208 VAC nominal; 50-60 Hz
  • Power consumption: L856=(220w-Day / 45w-Twilight /30w Night) L857=(240w-Day / 60w-Twilight /35w Night)
  • Connection Details: Supplied with a combined power (3x2.5mm2) and control shielded connection cable
  • Overvoltage protection: Class III according to IEC61643-1

Physical Characteristics

  • Light Dimensions (L x W x H ): 570x460x225mm / 22.4"x18.1"x8.8" nominal
  • Controller Dimensions (L x W x H ): 304x355x152mm / 14"x12"x6" nominal
  • Light Weight: 35kg/77Lbs. Nominal
  • Controller Weight: 6kg/15Lbs. nominal
  • Design degree of protection: IP65
  • Operating temperature range: -55ºC to +55 ºC/-67ºF to +130ºF

System Design, Control and Monitoring

  • Safety disconnect of power and capacitor discharge when opened
  • Visible status indicators
  • Automatic alarm feature if 3 consecutive flashes missed
  • Use as a stand alone light or in system with multiple lights and Orga CIP200 or CIP300 type controllers
  • Stainless steel type 316 housing
  • Level indicators and lifting eye for correct mounting
  • Built in modem for remote 24/7 TWR technician diagnostics