Installation and Commissioning
GARD 8000 SYS RFL Electronics
November 28, 2017 4-14 973.334.3100
4.5.10 INPUT POWER CONNECTIONS
CAUTION
POWER SUPPLIES ARE NOT HOT SWAPPABLE. POWER MUST BE
DISCONNECTED FROM THE APPROPRIATE POWER SUPPLY I/O
TERMINAL, BEFORE INSTALLING OR REMOVING POWER SUPPLIES FROM
THE GARD CHASSIS.
After all other connections have been made to the GARD 8000, input power connections can be made
to the Power Supply I/O at the rear of the chassis. If only one power supply is installed at the front of
the chassis in the slot designated as “Power Supply 1”, input power connections must be made to the
terminal block labeled “Power Supply 1” at the rear of the chassis. If only one power supply is
installed at the front of the chassis in the slot designated as “Power Supply 2”, input power connections
must be made to the terminal block labeled “Power Supply 2” at the rear of the chassis. If two power
supplies are installed at the front of the chassis, input power connections must be made to the terminal
blocks labeled “Power Supply 1” and “Power Supply 2” at the rear of the chassis.
Input power connections can be either dc station battery voltage (48-125Vdc or 250Vdc) or ac voltage
(125Vac or 220Vac), depending on which power supplies are installed in the chassis. Station battery
positive goes to the “+” terminal and station battery negative goes to the “-“ terminal. Depending on
the power supplies installed in the chassis, either 48-125Vdc or 220Vdc terminal batteries can be used.
If ac input power is used, connections are made to the “+” and “-” terminals and the polarity markings
can be neglected.
Individual double pole disconnects must be installed between the building or station battery
supply and GARD power supply. This must be done for both the main and back-up supply.
Refer to paragraph 6.9.2 for GARD 8000 power supply specifications.
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