Extreme Networks Summit X150 Series Hardware Installation Manual page 219

1 Verify that the DC circuit is de-energized.
2 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 (see
b Slide the spade terminal of the negative wire (–48 V) under the captive square washer on the
negative terminal (labeled –48V).
c Slide the spade terminal of the positive wire (–48 V_RTN) under the captive square washer on
the positive terminal (labeled –48V_RTN).
Figure 190: Connecting the DC Power Cables
d Tighten both screws on the terminal block to 20 pound-inches (2.25 Newton-meters).
3 Energize the DC circuit.
Attaching the DC Wiring Harness to the DC Power Socket on the Switch
After the DC wiring harness is connected to a permanent DC voltage source by a qualified, licensed
electrician, you can remove, replace, and maintain the Summit DC-powered switch without further
electrician assistance.
Note
Be sure that the DC circuit is de-energized before you connect the DC wiring harness to the
DC power socket.
Caution
Be sure that proper ESD controls are in use before switch maintenance is performed. This
includes but is not limited to wrist straps that are grounded to the switch chassis and earth
grounds.
To attach the DC wiring harness to the internal DC power supply:
Summit Family Hardware Installation Guide
Figure 190: Connecting the DC Power Cables
Installing Summit Family Switches
on page 219).
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