Installing A Hot-Swap Dc Power Supply - Lenovo x3530 M4 Installation And Service Manual

Installing a hot-swap dc power supply

Observe the following precautions when you install a hot-swap dc power supply.
The following notes describe the type of power supply that the server supports and other information that
you must consider when you install a power supply:
• Before you install an additional power supply or replace a power supply with one of a
different wattage, you may use the IBM Power Configurator utility to determine current
system power consumption. For more information and to download the utility, go to
http://www.ibm.com/systems/bladecenter/resources/powerconfig.html.
• The server comes with one hot-swap 12-volt output power supply that connects to power supply bay 1.
The input voltage is -48 V dc or -60 V dc auto-sensing.
• Before you install a dc power supply in the server, you must remove all ac power supplies. Do not use
both ac and dc power supplies in the same server. Install up to two dc power supplies or up to two ac
power supplies, but not a combination.
• Power supply 1 is the default/primary power supply. If power supply 1 fails, you must replace the power
supply with the same wattage immediately.
• You can order an optional power supply for redundancy.
• These power supplies are designed for parallel operation. In the event of a power-supply failure, the
redundant power supply continues to power the system. The server supports a maximum of two
power supplies.
• It is the customer's responsibility to supply the necessary power cable.
To reduce the risk of electric shock or energy hazards:
– Use a circuit breaker that is rated at 25 amps.
2
– Use 2.5 mm (12 AWG) at 90° C copper wire.
– Torque the wiring-terminal screws to 0.50 ~ 0.60 newton-meters (4.43 ~ 5.31 inch-pounds).
For more information, see Statement 34.
• If the power source requires ring terminals, you must use a crimping tool to install the ring terminals to
the power cord wires. The ring terminals must be UL approved and must accommodate the wire that is
described in the above-mentioned note .
Statement 29:
CAUTION:
This equipment is designed to permit the connection of the earthed conductor of the dc supply
circuit to the earthing conductor at the equipment.
This equipment is designed to permit the connection of the earthed conductor of the dc supply circuit to the
earthing conductor at the equipment. If this connection is made, all of the following conditions must be met:
• This equipment shall 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 shall 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 shall not be earthed
elsewhere.
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Lenovo System x3530 M4 Installation and Service Guide