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WARNING:
•
This equipment must be installed by trained service personnel, as defined by the NEC and IEC
60950-1, Second Edition, the standard for Safety of Information Technology Equipment.
Connect the equipment to a reliably grounded SELV source. An SELV source is a secondary
•
circuit that is designed so normal and single fault conditions do not cause the voltages to
exceed a safe level (60 V direct current).
The branch circuit overcurrent protection must be rated 24A.
•
WARNING:
positive or negative leads.
WARNING:
maintenance on the power supply.
CAUTION:
earthing conductor at the equipment. For more information, see the HP 750W Common Slot -48V
DC Input Hot-Plug Power Supply Kit Installation Instructions.
CAUTION:
the earthing conductor at the server equipment, the following conditions must be met:
This equipment must be connected directly to the DC supply system earthing electrode
•
conductor or to a bonding jumper from an earthing terminal bar or bus to which the DC supply
system earthing electrode conductor is connected.
This equipment should be located in the same immediate area (such as adjacent cabinets) as
•
any other equipment that has a connection between the earthed conductor of the same DC
supply circuit and the earthing conductor, and also the point of earthing of the DC system. The
DC system should be earthed elsewhere.
•
The DC supply source is to be located within the same premises as the equipment.
Switching or disconnecting devices should not be in the earthed circuit conductor between the
•
DC source and the point of connection of the earthing electrode conductor.
To connect a DC power cable to a DC power source:
Cut the DC power cord ends no shorter than 150 cm (59.06 in).
1.
If the power source requires ring tongues, use a crimping tool to install the ring tongues on the power
2.
cord wires.
IMPORTANT:
IMPORTANT:
mm (0.138 in); the diameter of a screw type terminal must be 4.0 mm (0.157 in).
Stack each same-colored pair of wires and then attach them to the same power source. The power cord
3.
consists of three wires (black, red, and green).
For more information, see the HP 750W Common Slot -48V DC Input Hot-Plug Power Supply Installation
Instructions.
Rack warnings
To reduce the risk of electric shock or energy hazards:
When installing a DC power supply, the ground wire must be connected before the
Remove power from the power supply before performing any installation steps or
The server equipment connects the earthed conductor of the DC supply circuit to the
If the DC connection exists between the earthed conductor of the DC supply circuit and
The ring tongues must be UL approved and accommodate 12 gauge wires.
The minimum nominal thread diameter of a pillar or stud type terminal must be 3.5
Setup 39
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