Chapter 2. Installation and Operation

The following UL requirements must be met during installation of the MX2800 STS-1 DC version:

1.Disconnect all power sources prior to servicing (unit may use multiple power sources).

2.Input: Minimum 48 VDC, 0.8 A

Minimum 120 VAC, 0.32 A

3.Connect to a reliably grounded -48 VDC source which is electrically isolated from the AC source.

4.The branch circuit overcurrent protection shall be a fuse or circuit breaker rated minimum 48 VDC, maximum 20 A.

5.A readily accessible disconnect device that is suitably approved and rated, shall be incorporated in the field wiring.

6.The chassis should be connected to an earth ground using the ground stud located between the AC and DC power sources on the rear panel.

7.The unit shall be installed in accordance with the requirements of NEC NFPA 70.

8.The unit shall be installed in accordance with Articles 400 and 364.8 of the National Electrical Code NFPA 70 when installed outside of a Restricted Access Location (i.e. Central Office, behind a locked door, or service personnel area only).

9.Care should be taken not to upset the stability of the equipment rack after installation is complete.

To meet the UL requirements during installation, use copper conductors only.

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MX2800 User Manual

61200659L1-1

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ADTRAN 1200291L1, 4200659L1, 4175043L2, 4200659L5, 4200659L8, 4200659L2, 4200659L7, 4200659L3 Installation and Operation

1200287L1, 1200291L1, 1200657L2, 4200659L4, 4200659L6 specifications

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