Extreme x250e-24t Installation Instruction
Summit Family Switches Hardware Installation Guide
115
Figure 86: Connecting the Ground Wire
Connecting the PSU to the DC Source Voltage
The DC power connection at your facility must be made by a qualified electrician, following the
instructions in this section.
instructions in this section.
WARNING!
Always make sure that the DC circuit is de-energized before connecting or disconnecting the DC power cables on the
Summit X650 DC PSU.
Summit X650 DC PSU.
CAUTION
Provide proper connection and strain relief on the DC power cables in accordance with all local and national
electrical codes.
electrical codes.
To connect the DC power input cables:
1
Verify that the DC circuit is de-energized.
2
Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to an appropriate
ground point on the rack.
ground point on the rack.
3
Slide the cover off the terminal block (
4
Connect the DC power input cables as follows:
a
On each terminal, loosen the screw enough to allow the spade terminal to slide underneath the
captive square washer.
captive square washer.
b
Slide the spade terminal of the negative wire (–48 V) under the captive square washer on the
negative
negative
terminal (labeled –48V).
c
Slide the spade terminal of the positive wire (–48 V RTN) under the captive square washer on the
positive
positive
terminal (labeled RTN).
SH_108
1
2
1 = Grounding point
2 = Ground wire
2 = Ground wire