Oracle Acme Packet 4500 Hardware Installation Manual page 20

COMPONENT OVERVIEW
DC Power Cords
Power Supply
Switch
Caution
Grounding Terminals
22 Acme Packet 4500 Hardware Installation Guide
chassis. A terminal block on the DC power supply serves as the DC power
interconnect.
terminal block
A DC power cord ships with each DC power supply. A DC power cord must be 3-
conductor, 18 AWG minimum rated for at least 140° F (60° C). The 3-conductor
jacketed cable's DC power leads have are stripped (0.38" / 10 mm) and tinned on
each end that connect to the 3-position terminal block on the power supply. The
supply end of each wire is stripped and tinned for attachment to your rack's circuit
breaker or power supply.
The following table lists the DC power cord wire markings:
Lead Designation (style-A DC
Wire Color
Power Supply)
Red Return
White Frame Ground
Black -48 VDC
Power switches are located on the system's power supplies and face rearward from
the Acme Packet 4500. The Acme Packet 4500 has no other power switches. For
normal operation, the switches on each power supply should be in the ON position.
Flipping both switches to the OFF position immediately powers down the Acme
Packet 4500. The side of the switch labeled with a 1 is on and 0 side is off.
Both power switches should remain in the ON position at all
times. Do not touch a power supply switch unless specifically
instructed to do so by your Acme Packet customer support
representative.
The grounding terminals are used to attach the Acme Packet 4500 chassis to a local
earth ground. The terminals are located between the two power supplies on the
chassis rear.
locking screw
handle
Lead Designation (style-B DC
Power Supply)
+
-
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