Juniper JRR200, Руководство по оборудованию

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Table 16: Site Electrical Wiring Guidelines
Guidelines Site Wiring Factor
If your site experiences any of the following problems, consult experts in electrical surge
suppression and shielding:
• Improperly installed wires cause radio frequency interference (RFI).
• Damage from lightning strikes occurs when wires exceed recommended distances or pass
between buildings.
• Electromagnetic pulses (EMPs) caused by lightning damage unshielded conductors and
electronic devices.
Signaling limitations
To reduce or eliminate RFI from your site wiring, do the following:
• Use a twisted-pair cable with a good distribution of grounding conductors.
•
If you must exceed the recommended distances, use a high-quality twisted-pair cable with
one ground conductor for each data signal when applicable.
Radio frequency
interference
If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly from
lightning or radio transmitters, seek expert advice.
Some of the problems caused by strong sources of electromagnetic interference (EMI) are:
• Destruction of the signal drivers and receivers in the device
• Electrical hazards as a result of power surges conducted over the lines into the equipment
Electromagnetic
compatibility
See Also General Safety Guidelines and Warnings on page 76
•
•
General Electrical Safety Guidelines and Warnings on page 96
Clearance Requirements for JRR200 Route Reflector Airflow and Hardware Maintenance
When planning the installation site, you need to allow sufficient clearance around the
JRR200 Route Reflector. Consider the following:
•
For the cooling system to function properly, the airflow around the chassis must be
unrestricted. See
Figure 11 on page 33 .
Copyright © 2018, Juniper Networks, Inc. 32
JRR200 Route Reflector Hardware Guide