Kontron TIGH2U Carrier Grade Server - Manual (Page 120)

TIGH2U Server—Safety Information
Kontron Carrier Grade Server TIGH2U
Product Guide, rev.1.2 December 2009
120
Overcurrent protection: The server is designed for an AC line voltage source with up to 20 amperes of
overcurrent protection per cord feed. If the power system for the equipment rack is installed on a
branch circuit with more than 20 amperes of protection, you must provide supplemental protection for
the server. The overall current rating of a configured server is less than 6 amperes.
Warning: Do not attempt to modify or use an AC power cordset that is not the exact type
required. You must use a power cordset 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.
A.2.2 If DC Power Supplies are Installed
Connection with a DC (Direct Current) source should only be performed by trained service personnel.
The server with DC input is to be installed in a Restricted Access Location in accordance with articles
110-16, 110-17, and 110-18 of the National Electric Code, ANSI/NFPA 70. The DC source must be
electrically isolated from any hazardous AC source by double or reinforced insulation. The DC source
must be capable of providing up to 300 watts of continuous power per feed pair.
Mains DC power disconnect: You are responsible for installing a properly rated DC power disconnect
for the server system. This mains disconnect must be readily accessible, and it must be labeled as
controlling power to the server. The UL listed circuit breaker of a centralized DC power system may be
used as a disconnect device when easily accessible and should be rated no more than 10 amps.
Grounding the server: This server is intended for installation with an isolated DC return (DC-I) and is
to be installed in a Common Bondng Network (CBN) per NEBS GR-1089. To avoid the potential for an
electrical shock hazard, you must reliably connect an earth grounding conductor to the server. The
earth grounding conductor must be a minimum 14 AWG connected to the earth ground stud(s) on the
rear of the server. The safety ground conductor should be connected to the chassis stud with a Listed
closed two-hole crimp terminal having 5/8-inch pitch. The nuts on the chassis earth ground studs
should be installed with a 10 in-lbs of torque. The safety ground conductor provides proper grounding
only for the server. You must provide additional, proper grounding for the rack and other devices
installed in it.
Overcurrent protection: Overcurrent protection UL Listed circuit breakers must be provided as part of
each host equipment rack and must be incorporated in the field wiring between the DC source and the
server. The branch circuit protection shall be rated minimum 75 Vdc, 10A maximum per feed pair. If
the DC power system for the equipment rack is installed with more than 10 amperes of protection,
you must provide supplemental protection for the server. The overall current rating of a maximum
configured server is 8 amperes.
A.2.3 Temperature and Ventilation
Caution: Temperature -- The temperature, in which the server operates when installed in an
equipment rack, must not go below 5°C (41°F) or rise above 40°C (95°F). Extreme
fluctuations in temperature can cause a variety of problems in your server.