KSwitch D3 UM Unmanaged Fast Ethernet Switch - Preliminary User Guide, Rev. 0.9
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Before connecting to power connect the ground cable to the ground connector and ensure
that the installation sites ground meets the grounding requirements specified in your local,
national and international region.
The DC power supply must be connected to a well-fused power source. If access to power is
restricted, guarantee disconnection using a separate cut-off device.
To protect the switch and any connected peripherals, a sufficient dimensioning of the power
cable wires must be selected – according to the maximum electrical specifications on the
product label – as stipulated by EN62368-1 .
When attaching power wires to the DC terminal block’s power contacts consider:
•
DC terminal block pitch, 5.08 mm
•
Wire size range: Solid wire: 12~24 AWG and Stranded wire: 12~24 AWG
•
Wire length 3 m (9.84 ft.) maximum
•
Wire strip length 7 mm (0.28 in)
After a brownout condition the used power supply must remain in the “off state” long
enough to allow all internal voltages to discharge sufficiently. Failure to observe this
required “off state” time may mean that parts of the switch or peripherals work incorrectly
or suffer a reduction of MTBF. The minimum “off state” time, to allow internal voltages to
discharge sufficiently, is dependent on the power supply and additional electrical factors. To
determine the required “off state” time, each case must be considered individually. For more
information, contact Kontron Support.
