Connecting DC Power to the SH4R and SH4R-2 Shelf
Connecting DC Power to the SH4R and
SH4R-2 Shelf
ELECTRIC VOLTAGEWARNING
Risk of electric shock, burns, or fire.
Do not connect or disconnect a DCpower cable if voltage is
applied. Always remove power from supply leads before connecting
or disconnecting DC power cables. Ignoring these instructions
results in burns and damage of the plug/socket combination by
causing electrical arcing.
This procedure assumes that:
l The shelf is properly grounded and mounted in the rack;
l The Shortening and Assembling DCPower Cables procedure is
complete;
l The wires on the end of the power cables are assembled with the
proper terminals; and
l The terminals are securely fixed to the wire ends.
If the wire terminals are damaged or inadequately fixed, replace
immediately before proceeding.
1. Verify that you are properly grounded with an anti-static wrist strap or heel strap
connected to the grounded ESD jack.
2. Verify that the office DC power supply is set up to deliver the correct operating
voltage to the shelf (–40 to –72 VDC rated input voltage).
3. Verify that the correct fuse or breaker is installed at the power supply source and that
power is turned off. For recommended external circuit breaker, see PSM-DC4.
4. For the shelf that you want to power, determine which redundant, load-sharing mode
configuration you want to support. These figures detail the supported DCpower
wiring configurations.
331 FSP 3000R7 High-Density Subshelf Guide - R17.2 - Issue:B
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