STC Smartscan NG2, Manual

Page: 47 / 133

EUD-2018086-00 Rev.3, SmartScanNG² User's Guide for Wayside Enclosure Components, 14 May 2021
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4.3 DC Power Distribution
DC power distribution consists of a distribution block and a fuse block, which is shown below.
There is one of each of these components per SmartScanNG² detector.
To 12 VDC Battery
To Battery Charger
DISTRIBUTION BLOCK
IN-LINE FUSE
(To External Radio)
FUSE BLOCK
To SmartScanNG To External Radio
To AEI Interface
RED
BLACK
The distribution block contains six terminals. Loosening the middle gold nuts disconnects
the DC power to the rest of the system. Wires from the bottom of the distribution block go to
the 12V battery and the battery charger. Wires from its top go to the fuse block, to the AEI
Interface, and the external radio.
The fuse block contains a standard 13/32 x 1-1/2-inch, 25-amp, fast blow fuse. The fuse
provides overload protection for the SmartScanNG² detector. The equipment side of the fuse
block is connected to the surge suppression panel. The battery side of the fuse block is
connected to the battery via the distribution block.