Juniper SRX5600, Руководство по оборудованию, Страница: 221 / 483

Connecting Power to a DC-Powered SRX5600 Services Gateway
WARNING: Before performing DC power procedures, ensure that power is removed
from the DC circuit. To ensure that all power is off, locate the circuit breaker on the
panel board that services the DC circuit, switch the circuit breaker to the off position,
and tape the switch handle of the circuit breaker in the off position.
WARNING: To meet safety and electromagnetic interference (EMI) requirements and
to ensure proper operation, you must properly ground the services gateway chassis
before connecting power. See “Grounding the SRX5600 Services Gateway” on page 220
for instructions.
CAUTION: Do not mix AC and DC power supplies within the same services gateway.
Damage to the services gateway might occur.
You connect DC power to the services gateway by attaching power cables from the external DC power
sources to the terminal studs on the power supply faceplates. You must provide the power cables (the
cable lugs are supplied with the device).
To connect the DC source power cables to the services gateway:
1. Switch off the dedicated customer site circuit breakers. Ensure that the voltage across the DC power
source cable leads is 0 V and that there is no chance that the cable leads might become active during
installation.
2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to
one of the ESD points on the chassis.
3. Move the DC circuit breaker on the power supply faceplate to the off (O) position.
4. For a high-capacity DC power supply, check the setting of the input mode switch. Use a sharp,
nonconductive object to slide the switch to the desired position. Set the input mode switch to position
0 for 60-A input and position 1 for 70-A input. This setting is used by the power management software
and must be set on the power supply. See Figure 104 on page 225 .
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