Juniper SRX1500, Hardware Manual

Page: 49 / 168

CHAPTER 8
Power Requirements and Specifications
• SRX1500 Services Gateway Electrical Wiring Guidelines on page 31
• SRX1500 Services Gateway Supported AC Power Cords on page 32
•
SRX1500 Services Gateway AC Power Supply Electrical Specifications on page 33
•
SRX1500 Services Gateway DC Power Supply Electrical Specifications on page 34
• SRX1500 Services Gateway DC Power Cable Specifications on page 34
SRX1500 Services Gateway Electrical Wiring Guidelines
Table 11 on page 31 describes the factors you must consider while planning the electrical
wiring for the SRX1500 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.
Table 11: Site Electrical Wiring Guidelines for the SRX1500 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
To reduce or eliminate the emission of RFI from your site wiring:
• Use twisted-pair cable with a good distribution of grounding conductors.
• Use a high-quality twisted-pair cable with one ground conductor for
each data signal when applicable, if you must exceed the recommended
distances.
Radio frequency
interference (RFI)
31 Copyright © 2017, Juniper Networks, Inc.