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L-849L Runway Threshold Identifier Light (RTIL) System or REIL is a landing aid for pilots to identify the approach end of a runway and help provide adequate time for pilots to plan and execute a safe approach and landing at night or in reduced visibility conditions.
Runway Threshold Identification Light is a system of two white unidirectional flashing lights,visible from three miles during the day and 20 miles at night or poor weather conditions. Installed facing the approach, REIL/RTIL lights mark the end of an active runway. It is part of the guidance system on an airport
The position of the airport runway lighting products is one on the right and one on the left or the threshold The flashes are synchronized and have a frequency between 60 to 120 per minute.
Runway Threshold Identification Lights are visible from every long distance giving the pilot time to adjust the flight and to make a safe and acquired approach for landing during the night or in reduced visibility conditions.
Runway threshold identification lights shall be located symmetrically about the runway centre line, in line with the threshold and approximately 10 m outside each line of runway edge lights.
These strobe flash at a rate of approximately twice per second simultaneously. Visual aids required with the use of the REIL include high intensity runway edge lights, runway threshold lights or displaced threshold lights, and runway markings. The PAPI system may also be an associated with a REIL. This system should never be used in conjunction with Pulsed Light Approach Slope Indictors (PLASI) system.
• Compliance to FAA-5345-51B and ICAO and CAAC .
• Power Consumption：20W(elevated light)/30W(inset light).
• Low, medium and high intensity.
• Inset & Elevated options.
• Modular design, concise structure, easy maintenance and high reliability.
• Can field Bus is used as the medium for synchronous control, intensity control and status monitoring.Reliable data
exchange and strong ability of anti-interference greatly reduce the probability of misfires and false alarms.
• LCD displays more information with a friendlier human-machine interface.Operators can distinguish between
LED light fault and communication fault, which makes maintenance easier.
• MCC with RS485 interfaces, which is easy to connect to airfield lighting control and monitoring system(ALMS).
• Auto switch-on after resume of power in case of power interruption, with no need to reset and readjust the
brightness step.
• Comprehensive lightning and over voltage protections
• Unit control box is able to be mounted on the flasher pole, which reduces construction costs.
• The main control cabinet and all unit cabinets have CPU, which works independently and collaborative cooperation
is achieved through the bus communication.
• Fault of any components of the lighting fixtures will not result in the failure of the system, so as to ensure its
operation reliability.
•The system has the lamp service life detection, flash missing detection, times accounting and online detection.
•The LCD panel display of the main control cabinet accounts and records the operation state of the system.
Unit Control Box Equipment Data
| Input andOutput Voltage | 220VAC, 50 Hz, three-wire, Voltagesingle-phase |
| Output Trigger Pulses | Time-synchronized with the 50Hz line |
| Modes of Operation | Manual (local) control Or ALCMS control |
| Enclosure | Indoor and ventilated |
| Features on Control Cabinet | •The control mode of the sequence flashing light system can be switched between local control and tower control through the “Local/Remote” selector switch on the main control cabinet touch screen panel.•The color touch screen operation interface enables on/off of the sequential flashing lights, setting of the flash intensity levels, switching of the flashing frequencies, and display of various system status information, etc. • LED indicators on control panel for system monitoring • Service entrance switch disconnects incoming power to the control unit |
| Lightning Protection | Rugged surge protection on all input and output electrical connections |
ICC Equipment Data
| Quantity | One for each flash unit |
| Enclosure | Outdoor, equipped with a dehumidification ventilation device. |
| Input Voltage | 220VAC, 50Hz, single-phase |
| Power cable | Polyvinyl chloride insulated sheathed control cable, three-wire |
| Communications cable | Rugged surge protection on all external wiring connections |
| Mounting | Polyvinyl chloride insulated sheathed control cable, two-wire |
| Lighting Protection | Rugged surge protection on all input and output electrical connections |
LED Flasher Equipment Data
| Input Voltage | 220 VAC |
| Lamp | LED |
| Lamp Life | Average 50.000 to 100.000 hours on high-intensity step |
| Level of protection | IP65(elevated), IP68(inset) |
| Brightness level | 3 levels:150cd~450cd，800cd~2000cd，8000cd~20000cd |
| Flash frequency | Twice/second or Once/second |
| Horizontal Light Beam | -15° ～+15° |
| Vertical Light Beam | 0° ～+10° |
| Enclosure | Outdoor, Rain tight |
| Mounting | On a 2-inch pole (elevated)or a 12-inch shallow base(inset). |
