Low Voltage Ac Power: Rectifier Secondary Taps (12-25 Volts Ac Recommended); Low Voltage Dc Power: Teg Power Or Large Solar System (10-35 Volts Dc); Field Installation Instructions; Preparation Prior To Going To Field - Elecsys WATCHDOG II MESH Installation And Operation Manual

1.4.2
The unit can also be powered by tapping off the secondary windings of the rectifier transformer. An AC
voltage of 8 to 30 volts can be found and used to power the Base Station, but 12 to 25 volts is
recommended as the interrupter can be powered from the same source.
Advantages:

Continuous power allows real-time polling, interruption control, and reconfiguration

Allows more frequent data transmissions
Disadvantages:

Wiring into rectifier secondary slightly increases lightning susceptibility
1.4.3
The base station and interrupter can also be powered with a DC source of +10 to +35 volts DC power
@ < 250 mA
Advantages:

Good lightning protection

Good for remote sites with no electric power available

Continuous power allows real-time polling, interruption control, and reconfiguration

Allows more frequent data transmissions

Typical continuous current draw at +12 VDC: 110 mA (cellular system); 200 mA (Satellite
system)

Field Installation Instructions

The WatchdogCP 'Mesh" RMU System is simple to install in the field. The effort required will depend
on how the Base Station will be powered and whether the GPS-synchronized interruption components
are being installed.
NOTE: This equipment shall not be operated in a manner that has not been specified by
Elecsys. Failure to comply could result in impairment of safety standards used to certify this
equipment.

1.5 Preparation Prior to Going to Field

To simplify the field installation (and avoid multiple trips to the hardware store), Elecsys recommends
that the installer prepare the unit and gather the installation materials prior to heading to the field.
In general, the installer will need to provide the sundry fastening hardware and crimp terminals that will
be needed to mount the RMU enclosure, satellite antenna bracket, 'mesh' nodes, and interrupter switch
P/N 86-0006-00
Watchdog II Mesh User Manual
Low Voltage AC Power: Rectifier Secondary Taps (12-25 Volts
AC recommended)
Low Voltage DC Power: TEG Power or Large Solar System
(10-35 Volts DC)
Rev E 01-2020 Page
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