Juniper SRX240 Series, Руководство по оборудованию

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CHAPTER 7
Power Requirements and Specifications
• SRX240 Services Gateway Site Electrical Wiring Guidelines on page 35
• SRX240 Services Gateway Electrical and Power Requirements on page 36
•
SRX240 Services Gateway AC Power Specifications and Requirements on page 37
•
SRX240 Services Gateway DC Power Specifications and Requirements on page 38
SRX240 Services Gateway Site Electrical Wiring Guidelines
Table 18 on page 35 describes the factors you must consider while planning the electrical
wiring for the services gateway at your site.
CAUTION: It is particularly important to provide a properly grounded and
shielded environment and to use electrical surge-suppression devices.
CAUTION: For devices with AC power supplies, an external surge protective
device (SPD) must be used at the AC power source.
Table 18: Site Electrical Wiring Guidelines for the Services Gateway
Guideline Site Wiring Factor
To ensure that signaling functions optimally:
• Install wires correctly.
Improperly installed wires can emit radio interference.
• Do not exceed the recommended distances or pass wires
between buildings.
The potential for damage from lightning strikes increases if wires
exceed recommended distances or if wires pass between
buildings.
• Shield all conductors.
The electromagnetic pulse (EMP) caused by lightning can
damage unshielded conductors and destroy electronic devices.
Signaling Limitations
35 Copyright © 2015, Juniper Networks, Inc.