Emerson ControlWave EFM 4710A Instruction Manual page 263

SITE CONSIDERATIONS FOR EQUIPMENT
INSTALLATION, GROUNDING & WIRING
SECTION TITLE
1.1 GENERAL INTRODUCTION ....................................................................................... 1-1
1.2 MAJOR TOPICS ............................................................................................................. 1-1
2.1 PROTECTING INSTRUMENT SYSTEMS................................................................... 2-1
2.1.1 Quality Is Conformance To Requirements.................................................................... 2-1
2.2 PROTECTING EQUIPMENT & PERSONNEL ........................................................... 2-1
2.2.1 Considerations For The Protection of Personnel .......................................................... 2-2
2.2.2 Considerations For The Protection of Equipment ........................................................ 2-2
2.3 OTHER SITE SAFETY CONSIDERATIONS............................................................... 2-3
3.1 POWER & GROUND SYSTEMS................................................................................... 3-1
3.2 IMPORTANCE OF GOOD GROUNDS......................................................................... 3-1
3.3 EARTH GROUND CONNECTIONS............................................................................. 3-1
3.3.1 Establishing a Good Earth Ground. .............................................................................. 3-1
3.3.1.1 Soil Conditions ................................................................................................................ 3-2
3.3.1.2 Soil Types ........................................................................................................................ 3-2
3.3.1.3 Dry, Sandy or Rocky Soil................................................................................................ 3-4
3.3.2 Ground Wire Considerations. ........................................................................................ 3-5
3.3.3 Other Grounding Considerations. ................................................................................. 3-6
3.4 ISOLATING EQUIPMENT FROM THE PIPELINE ................................................... 3-7
3.4.1 Meter Runs Without Cathodic Protection..................................................................... 3-7
3.4.2 Meter Runs With Cathodic Protection .......................................................................... 3-7
Section 4 - LIGHTNING ARRESTERS & SURGE PROTECTORS
4.1 STROKES & STRIKES .................................................................................................. 4-1
4.1.1 Chance of Being Struck by Lightning. .......................................................................... 4-1
4.1.2 Antenna Caution ............................................................................................................ 4-3
4.1.3 Ground Propagation ....................................................................................................... 4-5
4.1.4 Tying it all Together....................................................................................................... 4-5
4.1.5 Impulse Protection Summary ........................................................................................ 4-5
4.2 USE OF LIGHTNING ARRESTERS & SURGE PROTECTORS................................ 4-6
5.1 OVERVIEW ....................................................................................................................5-1
5.2 INSTRUMENT WIRING. .............................................................................................. 5-1
5.2.1 Common Returns ............................................................................................................5-1
Supplement S1400CW
Supplement Guide S1400CW
TABLE OF CONTENTS
Section 1 - INTRODUCTION
Section 2 - PROTECTION
Section 3 - GROUNDING & ISOLATION
Section 5 - WIRING TECHNIQUES
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