AS/NZS 3835.1:2006

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