Connecting The -48/-60Vdc And Return Wires - Allied Telesis AT-x510-28GPX Installation Manual

Chapter 5: Powering On the Switch
Connecting the
-48/-60VDC and
RETURN Wires
80
5. Connect the other end of the grounding wire to the building protective
earth.
6. After installing the grounding wire, go to "Connecting the -48/-60VDC
and RETURN Wires," next.
After installing the grounding wire, connect the -48/-60VDC and RETURN
wires by performing the following procedure:
Caution
Verify that the DC circuit is powered off before performing this
procedure.
Warning
As a safety precaution, install a circuit breaker with a minimum value
of 10 Amps between the equipment and the DC power source.
Always connect the wires to the LAN equipment first before
connecting the wires to the circuit breaker. Do not work with HOT
leads to avoid the danger of physical injury from electrical shock.
Always be sure that the circuit breaker is in the OFF position before
connecting the wires to the breaker.
Warning
The power input must be provided by a SELV source only, per
IEC60950. Do not connect to a centralized DC battery bank.
1. Use a 3mm flat-head screwdriver to loosen the two captive screws that
secure the DC connector to the chassis. Refer to Figure 38 on page
81.
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E31
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