Oracle Acme Packet 4500, Hardware Installation And Maintenance Manual

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22 Acme Packet 4500 Hardware Installation and Maintenance Guide
COMPONENT OVERVIEW
system chassis by its handle. Use the locking screw to lock the power supply into the
chassis. A terminal block on the DC power supply serves as the DC power
interconnect.
Terminal Block Handle Locking Screw
Figure 2 - 26. DC Power Supply Interface Components
DC Power Cords 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:
Table 2 - 4. DC Power Cord Wire Markings
Wire Color
Lead Designation (style-A DC
Power Supply) Lead Designation (style-B DC
Power Supply)
Red Return +
White Frame Ground
Black -48 VDC -
Power Supply
Switch
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 .
Caution 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.