IBM SAN192C-6 Installation, Service And User Manual page 107

7. Turn the power switch on the DC power supply from standby (0) to on (1). The
output LED turns on when power is being output to the switch.
Connecting a DC Power Supply Directly to DC Power Sources
About this task
If the DC power supply is within one cable length of the DC power sources, you
can connect them directly to one another.
To connect the 3-kW DC power supply directly to one or two DC power sources,
follow these steps:
Procedure
1. Turn the power switch to standby (labeled 0 on the power switch).
2. Turn off the power at the circuit breakers for the portions of the DC grid power
that you are connecting to and verify that all of the LEDs on the power
supplies are off.
Note: Before performing any of the following procedures, ensure that power is
removed from the DC circuit.
3. Size the power cables to the distance between the power supply and the DC
power grid. If you need to cut the cable, cut it at the end that connects to the
DC power grid, remove 0.75 inch (19 mm) of insulation from the cut ends, and
attach them to the DC power system. Be sure to connect the negative cables to
negative lines and positive cables to positive lines.
Note: For all your power connections, if you are using cables with two
different colors, use one color cable for all positive circuits and the other color
for all negative circuits.
Note: Hazardous voltage or energy may be present on DC power terminals.
Always replace cover when terminals are not in service. Be sure uninsulated
conductors are not accessible when cover is in place.
4. Remove the three screws that hold down the safety cover for the terminal box
on the front of the DC power supply and remove the cover (see Figure 35 on
page 84).
Note: The terminal box has four slots for four power terminals (ordered as
negative [-], positive [+], positive [+], and negative [-]). Each terminal has two
nuts that you use to fasten a power cable to the terminal.
Chapter 3. Installing the IBM c-type SAN Device
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