Installing Summit Family Switches
Extreme Networks Consolidated ExtremeXOS Hardware Installation Guide
290
Table 36 lists the technical specifications for the internal DC power supply.
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 X450a-24tDC, Summit X450a-24xDC, or
Summit X450a-48tDC system without further electrician assistance.
Be sure that the DC circuit is de-energized before you connect the DC wiring harness to the DC power socket.
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, perform the following steps:
1 Plug the DC wiring harness connector into the DC power supply socket on the rear of the switch
(see Figure 202).
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 201 for the DC wiring harness connector.
Table 36: Summit X450a family internal DC power supply specifications
Characteristic Specification
Summit X450a-24tDC
Nominal input voltage
-48 V , 2.0 A
Summit X450a-24xDC
Nominal input voltage
-48 V , 2.5 A
Summit X450a-48tDC
Nominal input voltage
-48 V , 4.5 A
Operational voltage
range
-36 to -72 V
Summit X450a-24tDC
Input current
2.0 A at -36 V , 1.0 A at -72 V
Summit X450a-24xDC
Input current
2.5 A at -36 V , 1.25 A at -72 V
Summit X450a-48tDC
Input current
6.0 A at -36 V , 2.0 A at -72 V
Inrush current 40 A peak maximum
Input wire harness Extreme PN 250088
Wire size 14 AWG
Connector on cable TYCO PN 206060-1
Ambient operating
conditions
0°C to 40°C
Storage and
transportations
-40°C to 70°C
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