Page 23 - Arc Guard System - TVOC-2

ABB ARC GUARD SYSTEM™ – TVOC-2 INSTALLATION AND MAINTENANCE GUIDE 23

Example 3, Mounting in a circuit breaker cubicle
In a circuit breaker cubicle there is a risk of detecting
breaking arcs unintentionally, if the detector is placed
above the busbars. In such a cubicle it is better to place
the detector at the bottom. See Figure 9.

• Use the same mounting bracket as for top mounting
but the bend is turned upwards and the detector
placed on the upper side.
• Drill a hole 20 mm (0.79 inches) in front of the busbars,
where the detector can be located.
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If many cables are connected to the terminals on the lower Figure 9
Place the detector at the bottom
side of the circuit breaker, the arc monitoring should
have an additional detector located just behind the front
protective sheet. See Figure 10. 04
Attach the detector directly to the bottom side of the
bracket of the protective cover with a cable strap.

Example 4, Mounting on a wall
Attach the lens from the front and pull the cable from the
back of the panel and fasten from the front of the panel or
Install the lens through the panel and fasten on the back
of the panel The minimum diameter of the hole should be
9.85 mm. See Figure 11. 1SFC170011M0201
Figure 10
Additional detector located just behind the protective sheet
Connecting optical detectors

WARNING
Make sure that supply voltage is switched off!

Follow this steps below to connect the optical detectors
to the Arc Monitor.
1. 1 Remove the protection plug or the dummy plug.
WARNING
Only remove protection plug from connection
to use. Protection plugs are needed to protect
the detector inputs from dust and light.

Figure 11
WARNING Place the detector at the bottom
For the E6-S extension unit, the dummy plugs
(TvOC-2-PP2) connected at delivery, are also
used to maintain functionality of the unit.
Removing the dummy plugs will not only
allow for dirt and dust to enter but will trigger
warnings on the HMI for damaged detectors.

2 Connect optical detectors to lower side of Arc Monitor.
Detector inputs are X1:1-10 (for Extension 1, X2:1-10 and
Extension 2, X3:1-10) 2
1

1SFC170011M0201
Figure 12
Connect the detector cable