�1���� Scope����������
�2���� References
�3���� Definitions�
������� 3.1���� Terms defined elsewhere��������
������� 3.2���� Terms defined in this Recommendation������������
�4���� Abbreviations and acronyms�������������
�5���� Conventions�������������
�6���� Earth potential rise in electric power systems������������
�7���� Metallic transfer of EPR�������
������� 7.1���� Description of metallic transfer and influences on
telecommunications��������������
������� 7.2���� Calculation of metallic transfer���������������
������� 7.3���� Transfer of the EPR by power lines������
������� 7.4���� Transfer of the EPR due to an HV fault
������� 7.5���� Transfer of the EPR due to an MV fault and influence on
customer premises���
�8���� Mitigation techniques����������
������� 8.1���� Protecting telecommunication lines serving LV installations (MV
faults)��������������
Annex A � Techniques for calculating the EPR in electric power systems����
������� A.1���� Network parameters affecting the EPR�������������
������� A.2���� Techniques for calculating the EPR������
Appendix I � Calculation of fault current distribution����
Appendix II � Through tower earthing during power line faults����
������ II.1���� Equivalent circuit of the earth wire with earth return���
������ II.2���� Solution of the circuit��
������ II.3���� Example of application���������������
Appendix III � Impedance to earth of MV/LV transformer stations����
����� III.1���� Types of measured transformer stations�����������
����� III.2���� Measurement method��������������
����� III.3���� Results of the measurements
����� III.4���� Conclusions����
Appendix IV � Transferred voltage and current by means of LV neutral
conductors����
������ IV.1���� System modelling, options and parameters����
������ IV.2���� Feeding of the neutral-to-earth loop�
������ IV.3���� Voltage and current profiles vs. length of the neutral�
Appendix V � Input impedance of the LV neutral-to-earth loop����
������ VI.1���� Problem identification��������������
������ VI.2���� Study of the relative importance of the network parameters and
conditions��
������ VI.3���� Main conclusions��������
Appendix VII � Screening factor of a power cable with an imperfectly earthed
sheath����
����� VII.1���� Criterion for long cables�����������
����� VII.2���� Short (finite length) cable sheaths with continuous earthing��
����� VII.3���� Screening factor of a power cable with an insulating cover������
����� VII.4���� Screening factors for non-uniform lines�����������
Appendix VIII � Screening factors of telecommunication cables with imperfectly
earthed sheaths����
���� VIII.1���� Telecommunication cables affected by longitudinal induction
���� VIII.2���� Telecommunication cables affected by EPR����
Bibliography����