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350 FEEDER PROTECTION SYSTEM – QUICKSTART GUIDE
MECHANICAL INSTALLATION
CHAPTER 2: INSTALLATION
Arc flash sensors of either type can be connected to any of the four arc flash ports on the
back of the 350 relay, as shown.
Figure 2-14: Arc flash sensors connected to a 350 relay
Sensor fiber handling
& storage
CAUTION:
Arc Flash sensor fiber is pressure sensitive and must be handled carefully to avoid
damage. Read the following guidelines fully before proceeding.
Care must be taken when handling the Arc Flash sensor fiber, which can be damaged if
twisted, bent, or clamped tightly during installation.
•
Do not bend sensor fiber sharply, or with a radius of less than 35 mm (1.3 inches).
Sharp bends can damage the fiber. Do not pull or tug loops of sensor fiber, as sharp
bends may result.
•
Do not clamp sensor fiber tightly during installation. Sensor fiber should be held in
place loosely for the best long-term performance. Avoid over-tightening ties which
may deform or break the sensor fiber.
•
Do not pull or tug sensor fiber with force, as this may cause internal damage or
separate the fiber from the cable connector.
•
Do not twist the sensor fiber, as twisting can damage the fiber resulting in
substandard performance.
•
Do not attach sensor fiber directly to the bus or other live conductors.
