Kontron OmniClient - Manual (Page 25)

OmniClient – User’s Guide (V1.01)
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7.5.1. Power and Grounding
7.5.1.1. If AC power supplies are installed
Mains AC power disconnect: The AC power cord(s) is considered the mains disconnect for the
server and must be readily accessible when installed. If the individual server power cord(s) will
not be readily accessible for disconnection then you must install an AC power disconnect for the
entire rack unit. This main disconnect must be readily accessible, and it must be labeled as
controlling power to the entire rack, not just to the server(s).
Grounding the system: To avoid an electrical shock hazard, you must ensure the system has
proper grounding. The OmniClient power cord includes the safety ground conductor and
provides proper grounding only for the OmniClient. You must ensure proper grounding is
provided for the entire system into which the OmniClient is embedded. You must provide
additional, proper grounding for the OmniClient and the host equipment.
Overcurrent protection: The OmniClient is designed for an AC line voltage source with up to 10
amperes of overcurrent protection per cord feed. If the power system for the equipment rack is
installed on a branch circuit with more than 10 amperes of protection, you must provide
supplemental protection for the OmniClient. The overall current rating of a configured system is
typically less than 4 amperes.
WARNING: Do not attempt to modify or use an AC power cord set that is not the
exact type required. You must use a power cord set that meets the following
criteria:
 Rating: In the U.S. and Canada, cords must be UL (Underwriters Laboratories,
Inc.) Listed/CSA (Canadian Standards Organization) Certified type SJT, 18-3
AWG (American Wire Gauge). Outside of the U.S. and Canada, cords must be
flexible harmonized (<HAR>) or VDE (Verbena Deutscher Electrotechniker,
German Institute of Electrical Engineers) certified cord with 3x 0.75 mm
conductors rated 250 VAC.
 Connector, wall outlet end: Cords must be terminated in grounding-type
male plug designed for use in your region. The connector must have
certification marks showing certification by an agency acceptable in your
region and for U.S. must be listed and rated for 125% of the overall current
rating of the server.
 Connector, server end: The connectors that plug into the AC receptacle on
the server must be an approved IEC (International Electrotechnical
Commission) 320, sheet C13, type female connector.
 Cord length and flexibility: Cords must be less than 4.5 meters (14.8 feet)
long.
Even when the system is turned off via the power switch there is still a standby-
voltage of 5 V on the baseboard. The system is not completely disconnected from
the main power supply by turning off via the power switch.