HP StorageWorks 500 Modular Smart Array - Manual (Page 59)

Hardware Options Installation
HP StorageWorks Modular Smart Array 500 System User Guide 3-15
To install a DC power supply:
1. Power down the system. Refer to “System Power Down” in this chapter.
2. Determine the required length of the DC power cord:
WARNING: To reduce the risk of electric shock or damage to the
equipment, do not connect the power cord to the power supply until the
power supply is installed.
a. Place the power supply end of the DC power cord near the power supply bay.
Do not plug the DC power cord into a power supply.
b. Route the power cord to a PDU or other suitable DC power source. Do not
plug the DC power cord into the power source.
c. Trim the DC power cord as required.
3. Connect the free end of the DC power cord to the PDU or other suitable DC
power source.
4. Connect the free end of the green/yellow safety cable to a suitable earth ground.
IMPORTANT: If the power supply fails to operate, the red and black cables may be
connected incorrectly. When connected properly, the black cables should be at a higher
potential (more positive) relative to the red cable. The power supply features reverse
polarity protection so that no damage occurs if the power supply is connected incorrectly.