Mounting Lens Sensors For An Arc Protection System - ABB RELION 620 Series Installation Manual

Mounting
4.3.9

Mounting lens sensors for an arc protection system

Arc protection is used to detect arc situations in air insulated metal-clad
switchgear.
The arc protection system determines where in the switchgear cubicle the optional
lens sensors are installed.
1.
42
1 Test switch RTXP 24
Figure 25: protection relay and the test switch RTXP 24
Drill a hole (Ø 10 mm) in the wall of the supervised space.
B
A 3.5 mm
B 10 mm
Figure 26: Dimensions of the lens sensor
1
C ∅ 9.5 mm
D 19 mm
1MRS757641 G
D
620 series
Installation Manual