Table of Contents

1 -  AS/NZS 3835.1:2006 EARTH POTENTIAL RISE-PROTECTION OF TELECOMMUNICATIONS NETWORK USERS, PERSONNEL AND PLANT - CODE OF...
4 -  PREFACE
5 -  CONTENTS
7 -  FOREWORD
8 -  SECTION 1 SCOPE AND GENERAL
8 -  1.1 SCOPE
8 -  1.2 EXCLUSIONS
9 -  1.3 APPLICATION
9 -  1.4 GENERAL
10 -  1.5 REFERENCED DOCUMENTS
12 -  SECTION 2 DEFINITIONS
12 -  2.1 DEFINITIONS RELATING TO POWER SYSTEMS
12 -  2.1.1 Distribution substation
12 -  2.1.2 HV site
12 -  2.1.3 Voltage
12 -  2.1.4 Multiple earthed neutral (MEN) system
12 -  2.1.5 Normal operation or ‚normally™
12 -  2.1.6 Overvoltage
12 -  2.1.7 Power utility
13 -  2.1.8 Total stress voltage
13 -  2.2 DEFINITIONS RELATING TO HV CIRCUITS
13 -  2.2.1 Category A circuit
13 -  2.2.2 Category B circuit
13 -  2.2.3 Category C circuit
13 -  2.2.4 High reliability circuit
14 -  2.3 DEFINITIONS RELATING TO HV INSTALLATION EARTHING
14 -  2.3.1 Earthing system and elements
15 -  2.3.2 Grid impedance
15 -  2.3.3 Soil resistivity
15 -  2.4 DEFINITIONS RELATING TO EARTH POTENTIALS
15 -  2.4.1 Earth potential
15 -  2.4.2 Earth potential rise (EPR)
15 -  2.4.3 Hazard zone
15 -  2.4.4 Remote earth
15 -  2.4.5 Standing voltage
15 -  2.4.6 Voltage gradient
16 -  2.5 DEFINITIONS RELATING TO TELECOMMUNICATIONS
16 -  2.5.1 Surge protection device (SPD)
16 -  2.5.2 HV isolating link
16 -  2.5.3 HV isolation device
16 -  2.5.4 Low frequency induction (LFI)
16 -  2.5.5 Main distribution frame (MDF)
16 -  2.5.6 Public switched telephone network (PSTN)
16 -  2.5.7 Telecommunications carrier
16 -  2.5.8 Telecommunications facilities
16 -  2.5.9 Telecommunications network boundary
16 -  2.5.10 Hybrid fibre coax network
17 -  SECTION 3 EPR COORDINATION-PRINCIPLES AND PROCEDURES
17 -  3.1 EPR HAZARD INVESTIGATION
17 -  3.2 PLANNING
18 -  3.3 CONSIDERATION OF POWER UTILITY CONSTRUCTION PROPOSALS
18 -  3.3.1 HV sites (excluding distribution substations)
18 -  3.3.2 HV circuits
18 -  3.3.3 Distribution substations and miscellaneous HV earths
19 -  3.4 CONSIDERATION OF TELECOMMUNICATIONS CARRIER CONSTRUCTION PROPOSALS
19 -  3.5 AGREEMENT ON SOLUTION
19 -  3.6 MINIMIZATION OF COSTS
20 -  SECTION 4 EPR HAZARD VOLTAGE LIMITS
20 -  4.1 AUSTRALIAN LIMITS
20 -  4.1.1 Australian EPR hazard voltage limits
20 -  4.1.2 Limits for telecommunications exchanges and street located carrier equipment
21 -  4.2 NEW ZEALAND EPR HAZARD VOLTAGE LIMITS
22 -  SECTION 5 ASSESSMENT OF EPR
22 -  5.1 INTRODUCTION
22 -  5.2 CONSIDERATION IN CONJUNCTION WITH LOW FREQUENCY INDUCTION (LFI)
23 -  SECTION 6 FIELD TESTS AND MEASUREMENTS
23 -  6.1 GENERAL
23 -  6.2 SAFETY PRECAUTIONS
24 -  SECTION 7 MITIGATION
24 -  7.1 INTRODUCTION
24 -  7.2 SCOPE OF MITIGATION
24 -  7.3 MITIGATION MEASURES
25 -  7.4 MITIGATION MEASURES APPLIED TO THE POWER SYSTEM PLANT
25 -  7.5 MITIGATION MEASURES APPLIED TO TELECOMMUNICATIONS PLANT
25 -  7.5.1 General
25 -  7.5.2 Mitigation measures for telecommunications plant passing through an EPR hazard zone
26 -  7.5.3 Mitigation measures for telecommunications plant terminating within a HV site or an EPR hazard zone
31 -  7.5.4 Lightning and surge protection for telecommunications equipment at HV sites or within an EPR hazard zone
31 -  7.5.5 Safety equipment and work practices for telecommunications personnel working at a HV site
34 -  APPENDIX A - SUBJECTS FOR AGREEMENT BETWEEN POWER UTILITIES AND TELECOMMUNICATIONS CARRIERS
34 -  A1 COST OBJECTIVE
34 -  A2 ALLOCATION OF COSTS (IN AUSTRALIA)
35 -  A3 ALLOCATION OF COSTS (IN NEW ZEALAND)
35 -  A4 COST ESTIMATES
36 -  APPENDIX B - REQUIREMENTS FOR HV ISOLATION EQUIPMENT
36 -  B1 SCOPE
36 -  B2 HV ISOLATING LINKS
36 -  B2.1 Classification
36 -  B2.2 Voltage withstand
36 -  B2.3 Accessibility of conductive parts
36 -  B3 HV ISOLATION DEVICES
36 -  B3.1 Voltage rating
36 -  B3.2 Voltage withstand
38 -  APPENDIX C - LIST OF ACRONYMS AND ABBREVIATIONS
39 -  APPENDIX D - BIBLIOGRAPHY

Abstract

Specifies requirements and code of practice to minimize hazards due to earth potential rise for the protection of telecommunications network users, personnel and plant.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	ET-007
Supersedes	DR 04471