Juniper SRX380 - SRX380 Services Gateway Electrical Wiring Guidelines

SRX380 Services Gateway Electrical Wiring Guidelines
Table 13 on page 32 describes the factors you must consider while planning the electrical wiring for the
SRX380 at your site.
CAUTION: It is particularly important to provide a properly grounded and shielded
environment and to use electrical surge-suppression devices.
Table 13: Site Electrical Wiring Guidelines for the SRX380 Services Gateway
GuidelineSite 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 cables 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)
Provide a properly grounded and shielded environment and use electrical
surge-suppression devices.
Strong sources of electromagnetic interference (EMI) can cause the following
damage:
•
Destroy the signal drivers and receivers in the device
•
Conduct power surges over the lines into the equipment, resulting in an
electrical hazard
NOTE: If your site is susceptible to problems with EMC, particularly from
lightning or radio transmitters, you might want to seek expert advice.
Electromagnetic Compatibility
(EMC)
32