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Chapter 3 — System and site requirements
553-3121-210
Standard 3.0
January 1999
Grounding method
Each Option 11C Compact system cabinet is equipped with two ground lugs
located inside the cabinet.
The method of grounding used for the Option 11C Compact system depends
on whether or not cabinets are powered by the same service panel.
Cabinets powered by the same service panel
In the main cabinet, a #6 AWG ground wire is connected from one of the lugs
to the ground source (the ground bus in the AC power service panel). The
second ground lug is used to extend the ground connection (#6 AWG ground
wire) to an expansion cabinet.
Cabinets powered by different service panels
If an expansion cabinet cannot be powered from the same service panel as the
main cabinet, then it must be grounded separately to the service panel that
supplies it.
Conduit requirements
Conductive conduit linking panels and equipment are legal for use as a
grounding network in most countries. It is recommended that properly sized,
insulated copper conductors routed inside conduit for all Option 11C
Compact system ground paths be used whenever possible. A ground link
dependent on conduit may compromise or defeat the improvements made by
installing dedicated panels and transformers for the following reasons:
•
Conduit links may be separated by personnel servicing unrelated
equipment.
CAUTION
In order to prevent grounding problems, cabinets should be powered
from the same dedicated power panel.
Содержание Meridian Meridian 1
Страница 3: ...553 3121 210 Standard 3 0 January 1999 ...
Страница 17: ...xiv Contents 553 3121 210 Standard 3 0 January 1999 ...
Страница 89: ...Page 70 of 536 Chapter 6 Bracing cabinets against earthquakes 553 3121 210 Standard 3 0 January 1999 ...
Страница 97: ...Page 78 of 536 Chapter 8 Installing a new system 553 3121 210 Standard 3 0 January 1999 ...
Страница 107: ...Page 88 of 536 Chapter 10 Installing the system ground 553 3121 210 Standard 3 0 January 1999 ...
Страница 113: ...Page 94 of 536 Chapter 11 Installing the power supply 553 3121 210 Standard 3 0 January 1999 ...
Страница 125: ...Page 106 of 536 Chapter 12 Adding an expansion cabinet 553 3121 210 Standard 3 0 January 1999 ...
Страница 139: ...Page 120 of 536 Chapter 13 Installing the circuit cards 553 3121 210 Standard 3 0 January 1999 ...
Страница 157: ...Page 138 of 536 Chapter 15 Installing and connecting SDI and Ethernet ports 553 3121 210 Standard 3 0 January 1999 ...
Страница 175: ...Page 156 of 536 Chapter 16 Starting up and testing the system 553 3121 210 Standard 3 0 January 1999 ...
Страница 209: ...Page 190 of 536 Chapter 18 Connecting the trunks 553 3121 210 Standard 3 0 January 1999 ...
Страница 323: ...Page 304 of 536 Chapter 21 Installing Hospitality 553 3121 210 Standard 3 0 January 1999 ...
Страница 419: ...Page 400 of 536 Chapter 23 Pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 455: ...Page 436 of 536 Chapter 24 Changing pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 555: ...Page 536 of 536 Chapter 25 Fault locating and clearing 553 3121 210 Standard 3 0 January 1999 ...