127
APPENDIX
E
Using DC Power
This appendix describes using the DC Power Source option for the Sun StorageTek
2500 Series Arrays in the following sections:
■ “DC Power Overview” on page 127
■ “Installation Notes for DC Power” on page 128
■ “Ship Kit Changes” on page 129
■ “DC Power LEDS” on page 129
■ “Connecting Power Cables” on page 130
■ “Turning Off the DC Power During an Emergency” on page 131
■ “Relocation Cautions” on page 131
DC Power Overview
The Sun StorageTek 2500 Series Arrays can be ordered with a DC power connection
and connector cables.
Caution – A qualified service person is required to make the DC power connection
per NEC and CEC guidelines. A two-pole 20-amp circuit breaker is required between
the DC power source and the trays for over-current and short-circuit protection.
Before turning off any power switches on a DC-powered CRU or module, you must
disconnect the two-pole 20-amp circuit breaker.
Caution – Electrical grounding hazard – This equipment is designed to permit the
connection of the D.C. supply circuit to the earthing conductor at the equipment.
FIGURE E-1 shows the locations of the power-fan assemblies.
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