Extreme Networks Summit X150 Series Hardware Installation Manual page 307

2 Plug the DC cable connector into the DC power supply socket on the rear of the EPS-150DC unit.
The pins must align properly for the cable to completely connect. Do not force the cable into the
socket until the keyway is aligned properly. Refer to
harness connector and to
307 for the DC power socket location on the rear of the EPS-150DC unit.
Figure 284: Connecting the Input Cable to the EPS-150DC Unit
3 Tighten the retainer nut on the connector until it is finger tight.
Connecting the EPS-150DC to a Switch
If you are connecting the EPS-150DC unit to a Summit X450a-48tDC switch, you must ground the
switch before connecting power. For instructions on grounding the switch, see
DC-Powered Switch.
Warning
Always be sure that the DC circuit is de-energized before connecting the EPS-150DC to the
switch.
One end of the EPS-150DC cord has a keyed connector to ensure correct alignment of the connector.
The key is a plastic tab on the connector housing that fits into the EPS-150DC unit.
Figure 285: EPS-150DC Redundant Power Cord with Connector Key
To connect the EPS-150DC to a switch:
1 Verify that the DC power is turned off at the source.
2 Identify the keyed end of the redundant power cable.
3 Holding the keyed connector so that the side labeled "Top" is facing up, connect the EPS-150DC
redundant power cable to the power supply unit (see
a Switch on page 308).
4 Align and tighten the connector retaining screws to secure the cable connector to the power supply
unit.
5 Connect the other end of the redundant power cord to the Extreme switch.
The connector fits the slot in only one direction.
Summit Family Hardware Installation Guide
Figure 284: Connecting the Input Cable to the EPS-150DC Unit
Installing Summit External Power Supplies
Three-wire Cable Harness
Grounding a Summit
Figure 286: Connecting an EPS-150DC Unit to
for the DC wiring
on page
307