Powering On A Dc Chassis - Allied Telesis AT-8400 Series Reference Manual

Cabling and Powering on the Chassis
Powering on a
DC Chassis
2. Secure the cord by lowering the securing bracket.
3. Connect the power cord to an AC power source.
4. If you purchased an optional redundant power supply, repeat this
procedure to connect a power cord to the PWR B connector.
This procedure describes how to power on a DC powered AT-8400 Series
switch. If your chassis is AC powered, see
page 93.
Warning
ALWAYS connect the wiring to the LAN equipment before
connecting the wiring to the breaker. To avoid the danger of
physical injury from electrical shock, do not work with HOT feeds.
Always be sure that the breaker is in the OFF position before
connecting the wiring to the breaker.
Note
A tray cable is required to connect the power source if the chassis is
powered by centralized DC power. The tray cable must be an UL
listed Type TC tray cable and rated at 600 V and 90 degree C, with
three conductors, minimum 14 AWG.
1. Locate the two DC terminal blocks, labeled PWR A and PWR B, on
the rear panel of the chassis.
Note
If the chassis contains only one power supply, you can connect the
DC power wires to either terminal block.
2. Starting from the left side of a terminal block, identify the
positive, frame ground and negative terminals using the
symbols below the terminal block, as shown in Figure 51.
Powering on an AC Chassis
A
40-60VDC INPUT
Figure 51 DC Terminal Block
16
on
94