NetVanta 4300/4400 Series Unit Installation
61200890E2-34T Copyright © 2019 ADTRAN, Inc. 47
NetVanta 4305 (DC)
The DC-powered NetVanta 4305 connects to a centralized DC power source via the four-position power
connector on the rear of the chassis (see Figure 3 on page 15). The nominal input of the NetVanta 4305 is
+24 VDC or -48 VDC. Power and ground connections require copper conductors and a ring lug.
With the power disconnected, connect the primary power source to input A of the power
connector.
Connect a ground wire (fitted with a loop terminal end) to the grounding point using the screw
pro
vided. Connect the other end of the ground wire to a protective earth ground.
If using a backup power source, connect it to inp
ut B of the power connector.
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.
The 10/100Base-T and Gigabit Ethernet interfaces MUST NOT be metallically connected
to interfaces that 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.
Instructions for Connecting DC Power Source to the NetVanta 4305
Step Action
1
2
3
• Power to the NetVanta 4305 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
°C.
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