Adtran 550 用户指南

下载
页码 412
ATLAS 550 System Manual
Section 3  Network Turnup Procedure
61200305L2-1B
© 2004 ADTRAN, Inc.
53
4.
GROUNDING INSTRUCTIONS
The following provides grounding instruction information from the Underwriters’ Laboratory UL60950 
Standard for Safety of Information Technology Equipment Including Electrical Business Equipment, Third 
Edition, of December 1, 2000.
An equipment grounding conductor that is not smaller in size than the ungrounded branch-circuit supply 
conductors is to be installed as part of the circuit that supplies the product or system. Bare, covered, or 
insulated grounding conductors are acceptable. Individually covered or insulated equipment grounding 
conductors shall have a continuous outer finish that is either green, or green with one or more yellow 
stripes. The equipment grounding conductor is to be connected to ground at the service equipment.
The attachment-plug receptacles in the vicinity of the product or system are all to be of a grounding type, 
and the equipment grounding conductors serving these receptacles are to be connected to earth ground at 
the service equipment.
A supplementary equipment grounding conductor shall be installed between the product or system and 
ground that is in addition to the equipment grounding conductor in the power supply cord.
The supplementary equipment grounding conductor shall not be smaller in size than the ungrounded 
branch-circuit supply conductors. The supplementary equipment grounding conductor shall be connected 
to the product at the terminal provided, and shall be connected to ground in a manner that will retain the 
ground connection when the product is unplugged from the receptacle. The connection to ground of the 
supplementary equipment grounding conductor shall be in compliance with the rules for terminating 
bonding jumpers at Part K or Article 250 of the National Electrical Code, ANSI/NFPA 70. Termination of 
the supplementary equipment grounding conductor is permitted to be made to building steel, to a metal 
electrical raceway system, or to any grounded item that is permanently and reliably connected to the 
electrical service equipment ground.
The supplemental grounding conductor shall be connected to the equipment using a number 8 ring terminal 
and should be fastened to the grounding lug provided on the back panel of the equipment. The ring 
terminal should be installed using the appropriate crimping tool (AMP P/N 59250 T-EAD Crimping Tool 
or equivalent).
5.
MOUNTING OPTIONS
The ATLAS 550 unit may be used on a tabletop or installed in a 19-inch or 23-inch rackmount or 
wallmount configuration. ADTRAN includes 19-inch rackmount ears with the ATLAS 550 shipment 
(23-inch rackmount ears are sold separately). For a rackmount installation, the ATLAS 550 allows 
flush-face mount, face-forward mount, center mount, and rear mount. The rackmount ears may also be 
turned face down for wall mounting. When wall-mounted, the ATLAS 550 unit may be installed with 
either side up and the front and back panels facing sideways. 
Rackmounting the ATLAS 550
The ATLAS 550 is a rackmountable unit which can be installed into 19- or 23-inch equipment racks. (The 
ATLAS 550 ships with 19-inch rackmount ears installed; 23-inch rackmount ears can be ordered from 
ADTRAN - P/N 3265379-2@C). Follow these steps to mount the ATLAS 550 into a rack: