22
Installing a power supply
CAUTION:
• For dual-grid input, the input voltage and frequency for the two grids must be the same.
• Provide a circuit breaker for each power supply and make sure the circuit breaker is off before
installation.
• Do not install power supplies of different models on the same switch.
• To avoid power supply damage or bodily injury, support the bottom of a power supply instead of
holding its handle for power supply movement.
• Before installing a power supply, make sure the power supply is switched off.
• Make sure the power of the power supply can satisfy the requirements of the switch.
The switch uses 1 + 1 power redundancy and supports AC and DC power input. You can select AC or
DC power supply as needed. For more information about optional power supplies, see "Appendix B
FR
Us and compatibility matrixes."
Installing a power supply
CAUTION:
If the captive screws cannot be fastened, verify that the power supply is correctly installed.
To install the power supply:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is well grounded. For
more information, see "Attaching an ESD wrist strap."
2. As sh
own in callout 1 on Figure 19, rem
ove the blank filler (if any) from the slot to be used. Keep
the blank filler correctly for future use.
3. Unpack the power supply, and verify that the power supply model is correct.
4. Be sure to insert the power supply with its upside up. Grasp the handle of the module with one
hand and support the module bottom with the other.
5. As shown in callout 2 on Figure 19, gently pu
sh the power supply along the guide rails into the slot
until it has firm contact with the slot.
6. As shown in callout 3 on Figure 19, use a Phillips scr
ewdriver to fasten the captive screws on the
power supply to secure the power supply into the chassis.
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