The USG6680E, USG6712E, USG6716E comes with two AC power module. Each AC power module requires an AC power cable. When two AC power modules are used, connect power cables to both AC power modules.
Context
Before connecting the power cables, ensure that the AC power supply in the equipment room meets the input requirements of the USG.
Do not connect or disconnect the power cables when the USG is powered on.
Procedure
- Ensure that the PGND cable is adequately grounded.
- Connect AC power cables to AC power modules.
When two power modules are used, connect them to different power sources to improve availability.
- Plug one end of the C13 power cable to the power socket of the USG power module and adjust the cable-retention clip to an appropriate position.
- Use a velcro strap to bundle the power cable onto the handle of the power module.
- Connect the other end of the power cable to the external power supply system.
- If the external power supply is AC, plug the other end of the power cable to the AC power socket or the output of the AC power supply device.
Figure 5-51 Connecting AC power cables![Click to enlarge]()
- If a 240 V high-voltage DC PDU is used, directly connect the straight male connector to the PDU.
- If a 240 V high-voltage DC power distribution box is used, make OT or cord end terminals for the cable. Cut the straight male connector off and crimp OT or cord end terminals on the bare wires. Connect the brown wire to a negative terminal on the DC power distribution box, the blue wire to a positive terminal, and the yellow-green wire to a protection ground. If the switch fails to be powered on after you connect the power cable, swap the wires on the positive and negative terminals.
Follow-up Procedure
Verify the following after the connection is complete:
- The power cable is firmly connected to the power supply socket.
- If multiple USGs are deployed, the power cables of each USG are correctly labeled for distinction.