31. Arc SensorsArc Sensor User Manual MN026008EN February 2016 www.eaton.comFigure 4. EAFR-06 Arc Light Fiber Optic Loop Sensor(Plastic).Table 3. Technical Data for the EAFR-06 Arc Light FiberOptic Loop Sensor (Plastic).Light Intensity Threshold 8,000 LuxDetection Radius 360 DegreesMaximum Length 40 m (131.23 ft)Diameter 1 mm (0.039 in.)Bending Radius 5 cm (2 in.)Operating temperature -10 to 85°C (14 to 185°F)1.3 Arc Light Fiber Optic Loop Sensor (Glass) EAFR-07The EAFR-07 is an arc light fiber optic loop sensor. TheEAFR-07 fiber is a robust fiber optic cable providing practi-cally unlimited bending radius. EAFR-07 contains hundredsof glass fiber drains covered by a plastic tube making itextremely strong. The EAFR-07 sensors can be orderedin pre-manufactured lengths of 10, 15, 20, 25, 30, 35,40, 45, 50 m (32.81, 49.21, 65.62, 82.02, 98.43, 114.83,131.23, 147.64, 164.04 ft). The EAFR-07 loop sensor fiberoptic cable should be distributed throughout the protectedswitchgear cells.The EAFR-07 is not recommended to be cut and/or splicedon site. If accidental breakage of the loop sensor occurs,Eaton recommends replacing the loop sensor. Contact yournearest Eaton representative for more information.The fixed light sensitivity of the EAFR-07 sensor is 8,000Lux. The sensor does not require user settings. The loopsensor’s detection radius is 360 degrees (see Figure 5).Figure 5. EAFR-07 Arc Light Fiber Optic Loop Sensor(Glass).Table 4. Technical Data for the EAFR-07 Arc Light FiberOptic Loop Sensor (Glass).Light Intensity Threshold 8,000 LuxDetection Radius 360 DegreesMaximum Length 50 m (164 ft)Diameter 1.2 mm (0.047 in.)Bending Radius 1 cm (0.394 in.)Operating Temperature -40 to 85°C (-40 to 185°F)1.4 Arc Light Fiber Optic Loop Sensor (HighTemperature) EAFR-08The EAFR-08 is an arc light fiber optic loop sensor used forhigh temperature applications. It is developed to withstandtemperatures of up to 125°C (257°F) and is therefore suit-able for installation in wind turbine windings. The EAFR-08fiber is a robust fiber optic cable providing practically unlimit-ed bending radius. The EAFR-08 contains hundreds of glassfiber drains covered by a plastic tube making it extremelystrong. EAFR-08 loop sensors can be ordered in pre-manufactured lengths of 10, 15, 20, 25, 30, 35, 40, 45, 50m (32.81, 49.21, 65.62, 82.02, 98.43, 114.83, 131.23, 147.64,164.04 ft) The EAFR-08 loop sensor fiber optic cable shouldbe distributed throughout the protected switchgear cells.The EAFR-08 is not recommended to be cut and/or splicedon site. If accidental breakage of the loop sensor occurs,Eaton recommends replacing the loop sensor. Contact yournearest Eaton representative for more information.The fixed light sensitivity of the EAFR-08 loop sensor is8,000 Lux. The sensor does not require user settings. Theloop sensor’s detection radius is 360 degrees (see Figure 6).