STC Smartscan NG2, Manual

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May 2021, SmartScanNG² User's Guide for Wayside Enclosure Components, EUD-2018086-00 Rev.3
4.2.2 Battery Charger
The figure below shows the front of an NRS 24/30 battery charger.
DC+ DC- NEUT LINE
GND
110 VAC
Temp Probe
Defective LED
Charging LED
AC Fuses
DC Output Ammeter
Output Float
Voltage Switches
Temp Probe
3-Pin Plug
AC Breaker
The input voltage switch can be set to 115 VAC or 230 VAC. Use 115 for input voltages
between 108 and 128. Use 230 for input voltages between 216 and 256.
The output float voltage switches can be set so that a battery is charged within the range 20.0
VDC and 39.9 VDC. The
factory default is 28.00 VDC . This setting should be adjusted per
the battery manufacturer's specifications. To reset the switches, use a small slotted
screwdriver to turn each switch to the desired number. Be sure that each switch is set on a
number and not between numbers. The top switch controls the ten's digit. The middle switch
controls the one's digit. The bottom switch controls the tenth's digit. Thus, to select 28.0 VDC,
turn the top switch to 2, the middle switch to 8, and the bottom switch to 0.