•
Replacing the AC Power Supply Module on an NSM4000 Appliance on page 113
Connecting DC Power to the NSM4000 Appliance
Before connecting the NSM4000 appliance to a DC power source:
•
Ensure that you have read the guidelines in
“DC Power Electrical Safety Guidelines” on
.
•
Ensure that you have taken the necessary precautions to prevent ESD damage.
•
Ensure that you have grounded the appliance by connecting the DC power supply
grounding cable to earth ground.
CAUTION:
Before you connect power to the NSM4000 appliance, in order
to meet the safety requirements and ensure proper operation, get a licensed
electrician to attach a cable lug to the grounding and power cables that
you supply. A cable with an incorrectly attached lug can damage the
appliance (for example, by causing a short circuit).
•
Ensure that you have the following parts and tools available:
•
(Optional) Electrostatic discharge (ESD) grounding strap
•
DC power source cables (12-14 AWG) with ends of the wire stripped ~12mm and
twisted
•
Phillips (+) screwdriver, number 1
You connect DC source power to the appliance by attaching power cables from external
DC power sources to the terminal studs on the DC power supply module faceplates.
WARNING:
DC-powered NSM4000 appliances are intended for installation
only in restricted access locations.
WARNING:
Before you perform the following procedure, 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.
To connect the DC source power to the NSM4000 appliance:
1.
(Optional) Attach an electrostatic discharge (ESD) grounding strap to your bare wrist
and connect the strap to an external ESD point.
2.
Ensure that the power supply module is fully inserted in the chassis.
37
Copyright © 2016, Juniper Networks, Inc.
Chapter 6: Connecting the Appliance
Содержание NSM4000
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