ADTRAN Total Access 908, Руководство по установке оборудования

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Total Access 900 Series Hardware Installation Guide Unit Installation
61210916L1-34G Copyright © 2010 ADTRAN, Inc. 23
Follow these steps to rackmount the Total Access 912/916/924:
Grounding Instructions
The following provides grounding instructions for the Underwriters’ Laboratory UL 60950 Standard for
Safety of Information Technology Equipment Including Electrical Business Equipment, with revisions
dated March 15, 2002.
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.
• If installed in a closed or multi-unit rack assembly, the operating ambient temperature
of the rack environment may be greater than room ambient temperature. Therefore,
consideration should be given to installing the equipment in an environment compatible
with the maximum ambient temperature specified by the manufacturer.
• Installation of the equipment in a rack should be such that the amount of air flow
required for safe operation of the equipment is not compromised.
• Be careful not to compromise the stability of the equipment mounting rack when
installing this product.
• Consideration should be given to the connection of the equipment to the supply circuit
and the effect that overloading the circuit might have on overcurrent protection and
supply wiring. Appropriate consideration of equipment nameplate ratings should be
used when addressing this concern.
• Reliable grounding of rack-mounted equipment should be maintained. Particular
attention should be given to supply connections other than direct connections to the
branch circuit (e.g., use of power strips).
Instructions for Rack Mounting Total Access 900 Series
Step Action
1
Position the Total Access 900 Series in a stationary equipment rack. This unit takes up 1U of
space. To allow proper grounding, scrape the paint from the rack around the mounting holes
where the Total Access 900 Series will be positioned.
2 Have an assistant hold the unit in position as you install two mounting bolts through the unit’s
brackets and into the equipment rack.
3 Proceed to the steps given in Grounding Instructions on page 23 .