GE 350-A9 Quick Start Manual page 48

MECHANICAL INSTALLATION
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Through-hole mount
• Requires a standard or self-tapping M3 screw, and optionally an M3 washer.
• Mount the sensor through a 10 mm hole made in the surface of any mechanical
structure inside the switchgear or on the surface of one side of the switchgear itself,
as shown in the following figure.
Figure 2-19: AF point sensor, through-hole mount
Figure 2-20: AF point sensors connected to 350 relay
Make sure there is no dirt or dust inside the point sensor or on the surface because it
reduces the capturing efficiency of the device, increases its transmission loss, or both. If
the point sensor is covered with dust, clean it by blowing or wiping the dust off the point
sensor.
The material of the point sensor is not affected by water-based cleaning agents, dish
soap, or organic solvents with an alcohol (ethanol) base. Do not use solvents or solvent
mixtures that contain acids because they can attack or dissolve the optical plastic
material.
CHAPTER 2: INSTALLATION
350 FEEDER PROTECTION SYSTEM – QUICKSTART GUIDE