Extension (Option); Install Ation - ABB Arc Guard System TVOC-2 Installation And Maintenance Manual

16 ABB ARC GUARD SYSTEM™ – T VOC-2 INSTALL ATION AND MAINTENANCE GUIDE
If the system is configured for manual reset, K2 and K3
are energized until the user is resets them on the Human
Machine Interface (HMI) in the trip notification window. If
the system is configured for auto reset, K2 and K3 are de-
energized 250 ms after the arc is extinguished.
3.2.10 Detectors
The detectors are used to detect the intensive light from
an arc and transfer it to the Arc Guard System.
The detectors are using fibre-optics and are guaranteed
that they will react on the correct light intensity.
For this reason, the cables are not to be modified
in any way.
3.2.11 Extension
The extension module is used to expand the system from
the original 10 sensors with additional sensors.
One extension can hold up to 10 sensors. The Arc Monitor
can hold up to 2 extensions making it possible to mount
up to 30 detectors. The standard extension is used for
detector up to 30 meter length.
INFORMATION
A separate version of the extension module is
available which is intended only for 60 meter
detectors.