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Summit Family Switches Hardware Installation Guide

To connect the DC power cables to the Summit X650 DC PSU:

Verify that the DC circuit is de-energized. 

Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to an appropriate 
ground point on the rack.

Slide the cover off the terminal block (

Connect the DC power input cables as follows:

On each terminal, loosen the screw enough to allow the spade terminal to slide underneath the 
captive square washer. 

Slide the spade terminal of the negative wire (–48 V) under the captive square washer on the 
negative

 terminal (labeled –48V).

Slide the spade terminal of the positive wire (–48 V RTN) under the captive square washer on the 
positive

 terminal (labeled RTN).

SH_108

1

2

1 = Grounding point
2 = Ground wire