UFC 3 -520-01
June 10, 2002
Paragraph
10-1
INTRODUCTION ............................................................................
10-1
10-2
NEC GROUNDING AND BONDING REQUIREMENTS ...............
10-1
10-3
STATIC PROTECTION ..................................................................
10-1
10-4
COMMUNICATIONS SYSTEMS GROUNDING AND BONDING .
10-2
10-4.1
Introduction .....................................................................................
10-2
10-4.2
Connection to the Grounding Electrode .........................................
10-3
10-4.3
Commercial Building Grounding and Bonding Requirements
for Telecommunications .................................................................
10-4
10-5
LIGHTNING PROTECTION ...........................................................
10-5
10-6
INFORMATION SOURCES............................................................
10-5
CHAPTER 11 SURGE PROTECTION
Paragraph
11-1
INTRODUCTION ............................................................................
11-1
11-2
SURGE PROTECTION DESIGN ...................................................
11-2
11-2.1
Parallel Versus Series Approach....................................................
11-2
11-2.2
Multiple Layer Protection Design....................................................
11-2
11-3
INSTALLATION CRITERIA ............................................................
11-4
11-3.1
Minimizing Lead Length for Parallel Surge Protectors...................
11-4
11-3.2
Breaker Connection ........................................................................
11-6
11-3.3
Grounding .......................................................................................
11-7
11-3.4
Acceptance Tests ...........................................................................
11-7
11-3.5
Periodic Maintenance .....................................................................
11-8
11-4
SURGE PROTECTION FOR COMMUNICATIONS AND
RELATED SYSTEMS .....................................................................
11-8
CHAPTER 12 POWER SYSTEM QUALITY
Paragraph
12-1
INTRODUCTION ........................................................................... 12-1
12-2
UNBALANCED VOLTAGES........................................................... 12-1
12-3
HARMONIC DISTORTION EVALUATION..................................... 12-2
12-4
HARMONIC CURRENT EFFECTS ON TRANSFORMERS ......... 12-3
12-5
POWER QUALITY DESIGN........................................................... 12-5
12-6
NONLINEAR LOAD DESIGN CONSIDERATIONS ....................... 12-8
12-7
NEUTRAL CIRCUIT SIZING FOR NONLINEAR LOADS ............. 12-9
12-7.1
Potential Neutral Current Magnitudes ............................................ 12-9
12-7.2
Installation Design Criteria.............................................................. 12-10
12-8
INFORMATION SOURCES............................................................ 12-11
CHAPTER 13 EMERGENCY AND STANDBY POWER SYSTEMS
Paragraph
13-1
ESTABLISHING THE NEED FOR BACKUP POWER .................. 13-1
13-2
CLASSIFYING EMERGENCY POWER LOADS ........................... 13-3
13-3
ENGINE GENERATORS................................................................ 13-4
13-4
UPS SYSTEMS .............................................................................. 13-7
13-4.1
Introduction ..................................................................................... 13-7
13-4.2
Selection and Performance ............................................................ 13-7
13-4.3
Sizing .............................................................................................. 13-8
13-4.4
Selection of a Large UPS System or Multiple Smaller UPS
Systems .......................................................................................... 13-10
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