Instruction manual

4. Installation of the Components
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4.6 Attaching and Detaching a Power Supply Cable to
and from a External Power Unit (EPU)
This section describes how to attach and detach a power supply cable to and from an EPU.
As for the EPU, connect the AC power supply cable as well as the stand-by power supply cable to output backup power
to the main device.
To use the EPU, follow the procedures below to attach or detach the AC power supply cable and the stand-by power
supply cable.
4.6.1 AC Power Supply Cable
The figures below show how to attach and detach the power supply cable to the external power
unit EPU-A. The same procedures are applicable to EPU-B.
Make sure to connect the device to a grounded outlet. Not connecting the grounded
outlet to the device can cause electric shocks, as well as a cause of failure due to
electrical noise.
When the device is mounted in a rack, fasten the power supply cable with the cable holder of
the rack in order to avoid stress on the cable connection part.