Extreme Networks ExtremeSwitching X435 Series Hardware Installation Manual page 231

Installing Your Extreme Networks Switch
Warning
Be sure to disconnect the ground wire after you disconnect all power 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.
3. Pull the cover off the terminal block.
4. Identify the grounding point on the front panel of the power supply.
5. Connect the ground wire to the grounding point as follows:
a. Insert a 6-32 UNC screw (provided) through the ring terminal and into the grounding point on
the power supply.
See
Figure 177: Connecting the Ground Wire (Front-to-Back Model 10933 Shown)
1 = Grounding point
b. Tighten the screw to 12.6 in‑lb (1.42 N m).
6. Connect the other end of the wire to a known reliable earth ground point at your site.
7. Connect the power supply to the source, following the instructions in
Supply to the Source Voltage
Connecting a 300 W DC Power Supply to the Source Voltage
Two 300 W DC power supplies are available: model 10933 (front-to-back airflow) and model 10944
(back-to-front airflow). Both can connect to either a +24 V or a –48 V power source.
The connection instructions, starting at step
are connecting to a +24 V power source or a –48 V power source.
The DC power connection at your facility must be made by a qualified electrician, following these
instructions.
Warning
Always make sure that the DC circuit is de-energized before connecting or disconnecting the
DC power cables on the DC power supply.
Figure 177.
1
2
on page 231.
Install a 300 W Internal DC Power Supply
2 = Ground wire
4 on page 232, are different depending upon whether you
ExtremeSwitching Hardware Installation Guide
Connecting a 300 W DC Power
231