ADTRAN NetVanta 6240 Series Installation Manual

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ADTRAN NetVanta 6240 Series Installation Manual Manual pdf 28 page image

Unit Installation NetVanta 6240/6250 Series HIG28 Copyright © 2013 ADTRAN, Inc. 61700202G1-34BFigure 6. Supplying DC Power and Grounding the NetVanta 6250Instructions for Connecting DC Power Source to the NetVanta 6250Step Action1 Insert the positive terminal of the DC power source into left position of the two-position terminalblock (labeled RTN on the NetVanta 6250). Tighten the screw.2 Insert the negative terminal of the DC power source into the right position of the two-positionterminal block (labeled -48V on the NetVanta 6250). Tighten the screw.3 With the power disconnected, insert the terminal block into the receptacle labeled DC IN until itis firmly seated against the chassis. Tighten the two screws.4 Connect a ground wire (fitted with a number 8 ring terminal end) to the grounding lug using thescrew provided and the appropriate crimping tool (AMP P/N 59250 T-EAD Crimping Tool orequivalent). Connect the other end of the ground wire to a protective earth ground. SeeFigure 6 below.5 Supply DC power to the unit.• Power to the NetVanta 6250 system must be from a reliably grounded 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 ratedminimum -48 VDC, maximum 10 A.• A readily accessible disconnect device, that is suitably approved and rated, shall beincorporated in the field wiring.• Maximum recommended ambient operating temperature is 50 ° C.CRAFTBBUAC INPUTDC INRTN -48V