Installation guide

Unit Installation NetVanta 6240/6250 Series HIG

Figure 6. Supplying DC Power and Grounding the NetVanta 6250

Instructions for Connecting DC Power Source to the NetVanta 6250

Step Action

1 Insert the positive terminal of the DC power source into left position of the two-position terminal

block (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-position

terminal 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 it

is 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 the

screw provided and the appropriate crimping tool (AMP P/N 59250 T-EAD Crimping Tool or

equivalent). Connect the other end of the ground wire to a protective earth ground. See

Figure 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 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.

CRAFT

BBU

AC INPUT

DC IN

RTN -48V