About Dc Power Cords; Connecting Dc Power Cords - Sun Oracle Sun Storage 2500-M2 Arrays Hardware Installation Manual

About DC Power Cords

If your expansion tray has the DC power option installed, review the following
information.
DC Power Cable
FIGURE 5-1
1 Supply (negative), brown wire, –48 VDC
2 Return (positive), blue wire
Each power-fan module has two DC power connectors. Be sure to use a separate
■
power source for each power-fan module in the expansion tray to maintain power
redundancy. You may, optionally, connect each DC power connector on the same
power-fan module to a different source for additional redundancy.
A two-pole, 30-amp circuit breaker is required between the DC power source and
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the expansion tray for over-current and short-circuit protection.

Connecting DC Power Cords

Caution – Risk of bodily injury—A qualified service person is required to make the
DC power connection according to NEC and CEC guidelines.
Note – Do not turn on power to the expansion tray until this guide instructs you to
do so. For the proper procedure for turning on the power, see
Array" on page 42.
3 Ground, green/yellow wire
4 DC power connector
"Powering On the
Chapter 5 Powering On the Array 41