Installation guide

Installing Summit External Power Supplies
Summit Family Switches Hardware Installation Guide
94
Connecting the DC Wiring Harness to the DC Power Socket on the EPS-150DC
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 EPS-150DC unit without further electrician
assistance.
WARNING!
Always be sure that the DC circuit is de-energized before connecting the DC wiring harness to the DC power socket.
To connect the DC wiring harness to the EPS-150DC unit:
1 Verify that the DC power is turned off at the source.
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 Figure 60 for the DC wiring harness connector
and to Figure 61 for the DC power socket location on the rear of the EPS-150DC unit.
Figure 61: 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 “Grounding the Summit
X450a-48tDC Switch” on page 75.
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
(Figure 62). The key is a plastic tab on the connector housing that fits into the EPS-150DC unit to ensure
correct alignment of the connector.
EPS-15DC_001C
EPS-150DC
in EPS-T2
DC wiring
harness