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Power Supplies
Mainframe Internal Power Supplies
The information below gives an overview of the power supplies used in the Kula
mainframes.
The Kula Mainframe is supplied as standard with two power supplies, one power supply is
able to run a fully populated mainframe. The other power supply is for redundancy.
This symbol indicates that hazardous voltages are present inside. No User Serviceable
Parts inside the power supplies. This unit should only be serviced by trained personnel.
The power supplies for the Kula mainframe are retained within the mainframe body, there
are no On/Off switches for the power supplies. The mainframe will power up as soon as the
AC Power Cables are plugged into the IEC connectors and turned On at the AC mains
supply.
Checking the Kula Power Supplies
Kula mainframe power supplies are hot-swappable. Replacing power supplies should only
be attempted by qualified personnel.
To see that the power supplies are working correctly, when mains power is applied, a green
power LED is lit (as shown below).
With the power supplies un-plugged from the mains supply, they can be individually
removed by unscrewing the removal screws and carefully withdrawing the PSU from the
body of the mainframe.
Note: To reduce the risk of electric shock, plug each power supply cord into
separate branch circuits employing separate service grounds.
Note: To ensure full dual redundancy, the two power supplies must be
powered from independent power sources.
Left PSU removal
screws
Right PSU removal
screws
Power
LED
Power
LED
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