ENA ER S34 : ISSUE 1 AMD 2 1988
Current
The latest, up-to-date edition.
01-12-2013
1 INTRODUCTION
2 SCOPE
3 SYMBOLS AND DESCRIPTIONS OF SYSTEMS
4 ESTIMATION OF THE RESISTANCE OF
INDIVIDUAL EARTH ELECTRODES AND
THE IMPEDANCE OF INTEGRATED
EARTHING SYSTEM
5 THE DISTRIBUTION OF EARTH-FAULT
CURRENT IN RELATION TO RISE OF
EARTH POTENTIAL
6 TECHNIQUES FOR ASSESSING RISE OF
EARTH POTENTIAL
7 ESTIMATION OF THE ZONE OF RISE OF
EARTH POTENTIAL IN RELATION TO
LIMITS CONCERNING ELECTRICAL INTERFERENCE
8 EXAMPLES OF PRACTICAL CALCULATIONS
APPENDIX A: MEASUREMENT OF SOIL RESISTIVITY
APPENDIX B: FORMULAE FOR DETERMINING THE
PROPORTION OF CURRENT RETURNING IN
THE GROUND FOR EARTH-FAULTS ON POWER
CABLES WITH METALLIC SHEATHS EARTHED
AT THEIR TERMINAL ENDS
APPENDIX C: THE DETERMINATION OF CCITT
VOLTAGE LIMIT CONTOURS FOR SUBSTATIONS
APPENDIX D: REFERENCES
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