Figure 23. Grounding The Netvanta 1224Str (Dc) - ADTRAN NetVanta 1000 Series Hardware Installation Manual

NetVanta 1000/1000R Series Hardware Installation Guide
NetVanta 1224STR (DC)
The DC-powered NetVanta 1224STR connects to a centralized DC power source via the four-position
power connector on the rear of the chassis (see Figure 9 on page 24). Power and ground connections
require copper conductors and a ring lug.
Instructions for Connecting DC Power Source to the NetVanta 1224STR
Step
1 With the power disconnected, connect the primary power source to input A of the power
connector.
2 Connect a ground wire (fitted with a loop terminal end) to the grounding point using the screw
provided. Connect the other end of the ground wire to a protective earth ground. See Figure 23
below.
3 If using a backup power source, connect it to input B of the power connector.
• Power to the NetVanta 1224STR DC System must be from a reliably grounded 24 or
48 VDC.
• Use only copper conductors when making power connections.
• Install unit in accordance with the requirements of NEC NFPA 70.
• The branch circuit overcurrent protection shall be a fuse or circuit breaker rated
minimum 48 VDC, maximum 10 A.
• 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
The 10/100BaseT and Gigabit-Ethernet interfaces MUST NOT be metallically connected
to interfaces which connect to the Outside Plant or its wiring. These interfaces are
designed for use as intra-building interfaces only. The addition of primary protectors is
not sufficient protection in order to connect this interface metallically to OSP wiring.
To comply with GR-1089-CORE, Issue 3, this equipment MUST only be installed in a
DC-C (common) bonding and grounding environment. It may not be utilized in a DC-I
(isolated) bonding and grounding environment.
61200500L1-34J

Figure 23. Grounding the NetVanta 1224STR (DC)

Copyright © 2006 ADTRAN, Inc.
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