ABB RELION REX640 - Mounting Lens Sensors for an Arc Protection System

4.3.5 Mounting lens sensors for an arc protection system
Arc protection is used to detect arc situations in air-insulated metal-clad
switchgear.
1. Drill a Ø 10 mm (0.3937 in) hole in the wall of the supervised space.
A
B
C
D
A 3.5 mm (0.1378 in)
B 10 mm (0.3937 in)
C Ø 9.5 mm (0.3740 in)
D 19 mm (0.7480 in)
Figure 46: Dimensions of the lens sensor
Mounting
1MRS759115 E
56 REX640
Installation Manual