ABB Arc Guard System TVOC-2 Installation And Maintenance Manual page 22

22 ABB ARC GUARD SYSTEM™ – T VOC-2 INSTALL ATION AND MAINTENANCE GUIDE
Example 1, positioning optical detector in a switch gear
The most common positioning of the detector involves
the horizontal and vertical bus bar system and the breaker
cubicle. If possible, supervise each cubicle. Avoid placing
the detector so that it sees normal light from the breaker.
See the example below about where to positioning the
detectors.
The sensor can detect arcs within a three meter (118 inch)
distance.
Example 2, Mounting Optical detector in an Apertures
cubicle
A single detector is able to monitor the busbars in both
the apparatus cubicle and the respective cable.
This is an example about how to mount optical detectors
with the mounting kit.
Do the following steps to mount the detector on a busbar.
1. Attach the detector to the mounting bracket
(1SFA663 006 R100x) before it is attached to the
cubicle.
2. The bend of mounting bracket should point
downwards.
3. Attach the detector to the upper side of the
bracket. See Figure 7.
4. Use a 2.5 mm (0.1 inch) wide cable strap.
5. Place the strap on the rear groove of the detector
head and around the notches in the mounting
bracket.
6. Attach the detector bracket onto the cubicle frame.
See Figure 8.
The hole in the mounting bracket is for M5 thread rolling
screws or 5.5 self tapping screws.
Figure 5
Positioning optical detector in a switch gear
3 m
30°
Figure 6
Sensor detect arcs distance
Figure 7
Place the strap
Figure 8
Attach the detector bracket
1SFC170011M0201
3 m
1SFC170011M0201
1SFC170011M0201
1SFC170011M0201