Specifications
Maximum Voltage:
16 Volts dc
Maximum Current:
40 Amperes
Circuit: Diode
OR-Gate
Diodes:
Two Schottky 80 Ampere, 20 Volt
Voltage Drop
0.4 Vdc Quiescent
0.6 Vdc at 40 Amperes
Charging Circuit:
Schottky diode and current limiting resistor.
Connectors:
Anderson Powerpoles, 45A
Size:
5.25 x 3.90 x 1.65 in, 13.4 x 9.9 x 4.2 cm
Weight:
0.9 lbs, 0.4 kg
Mounting Holes
Two, 0.175 d, at 4.95 distance, for #8 hardware.
PWRgate
Model PG40 Instructions
Thank you for purchasing the PWRgate….a simple 12 volt backup power system.
A PWRgate transfers up to 40 amperes at up to 16 volts dc continuously. It is a safe way to con-
nect both a battery and a power supply to a load, while electrically isolating both the battery and
the supply from each other. Whenever your 13.8 Volt power supply is on, the supply feeds the
load. Through a PWRgate your power supply also charges the battery, keeping the battery
healthy and ready for use. Whenever the power supply is off, the battery feeds the load. If either
the power supply or the battery is malfunctioning, neither draws current from the other. Switching
is instantaneous.
A PWRgate is a simple backup power system. Communication equipment will remain operative
on battery during ac power blackouts. Power supplies and batteries can be swapped out while
equipment remains on. No glitches.
Before installing the PWRgate, please read the following instructions.
Choosing a mounting location
Pick a location that is close, or central to, your power supply, battery, and load. Some 12 volt
equipment may draw large amounts of current. Remember, all wires have resistance so wires
must be kept as short as possible and should have a large wire size in order to minimize the volt-
age drop.
The PWRgate can be installed in any orientation in a cool dry location that is well ventilated. Be
careful not to restrict the cooling in any way. Do not place in direct sunlight, near heaters or heat
sources.
The PWRgate can be mounted using number 8 hardware, using the two mounting holes.
Connecting the power supply
Anderson Powerpoles are used for all PWRgate connections. See the inside cover and our sup-
port page http://www.westmountainradio.com/supportrr.htm "Powerpole Connector Installation
Tips" for extensive Powerpole instructions.
The power supply wire should be heavy gauge and as short as possible. We suggest #10 wire,
less than 6 feet long. West Mountain Radio carries 3 and 6 ft long ready made power supply
cables, #10 red and black insulated wire, with 1/4 in ring terminals to fit most power supplies on
one end and a pair of Powerpoles on the other.
When connecting, make sure that the RED Powerpole connects to the RED wire and connects
to the PLUS terminal on the supply. Similarly, make sure that the BLACK Powerpole connects
to the BLACK wire and connects to the NEGATIVE terminal on the supply. Check to see that the
connections at the power supply are well tightened.
Plug the wire from the power supply into the PWRgate connector marked PS (power supply).
Always confirm that the Powerpoles are plugged together securely.
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Install fuse here!
