Unit Installation
NetVanta 640 Series Hardware Installation Guide
22
Copyright © 2011 ADTRAN, Inc.
61700144G1-34A
Supplying Power to the Unit
The NetVanta 644 units come equipped with a 110 to 240 VAC, 50/60 Hz power supply for connecting to a
properly grounded power receptacle. (A detachable power cable with a grounded, three-prong plug comes with
the shipment.) To power this unit, connect the power cable to an appropriate AC power source.
Optional Battery Backup Unit (P/N 1175044L1)
The ADTRAN battery backup unit (BBU) is an optional device designed as a backup DC power supply for
the NetVanta 644. The BBU connects to the NetVanta 644 through a 6-foot charge/discharge, 2-conductor
wire with a keyed modular plug (included with the BBU). The 1175044L1 BBU is a low profile wallmount
configuration. It can be rack mounted with the appropriate 19-inch or 23-inch rackmount adapter brackets.
The 19-inch rackmount adapter bracket part number is P/N 1175047L1. The 23-inch rackmount adapter
bracket part number is P/N 1175048L1.
Features of the BBU, P/N 1175044L1, include the following:
•
No-spill battery design
•
Compact wallmount or rackmount box
•
Double BBU rack mounting available
•
7 AHR battery (up to 8 hours of backup, depending on load)
•
Modular plug (provides quick and easy installation)
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All mounting hardware included
•
In addition to the equipment earthing conductor in the power supply cord, a
supplementary equipment earthing conductor is to be installed between the system and
earth.
•
The supplemental earthing conductor shall be connected to the equipment using a
number 8 ring terminal and should be fastened to the grounding lug provided on the
rear 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).
•
The supplementary equipment earthing conductor must not be smaller in size than
cross-sectional area of not less than 2.5 mm
2
, if mechanically protected. The
supplementary equipment earthing conductor is to be connected to the product at the
terminal provided, and connected to earth in a manner that will retain the earth
connection when the power supply cord is unplugged. The connection to earth of the
supplementary earthing conductor must be in compliance with the appropriate rules for
terminating bonding jumpers in Part K of Article 250 of the National Electrical Code,
ANSI/NFPA 70, and Article 10 of Part 1 of the Canadian Electrical Code, Part 1,
C22.1. Termination of the supplementary earthing conductor is permitted to be made
to building steel, to a metal electrical raceway system, or to any earthed item that is
permanently and reliably connected to the electrical service equipment earthed.
•
Bare, covered, or insulated earthing conductors are acceptable. A covered or insulated
conductor must have a continuous outer finish that is either green, or green with one or
more yellow stripes.
•
A readily accessible disconnect device, that is suitably approved and rated, shall be
incorporated in the field wiring.
•
Maximum recommended ambient operating temperature is 50
°
C.
