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AS 4262.1-1995
[Current]Telecommunication overvoltages, Part 1: Protection of persons
Specifies requirements for the protection of users of telecommunication equipment from overvoltages which may exist between a user environment and the telecommunication facilities in that environment. It does not apply to a carrier's network.
Published: 05/03/1995
Pages: 20
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Table of contents
Cited references
Content history
Table of contents
Header
About this publication
PREFACE
FOREWORD
1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
2 PRINCIPLES
2.1 GENERAL CONSIDERATIONS FOR PROTECTION
2.1.1 Overvoltages in the user environment
2.1.2 Protection concepts
2.1.3 Protection using an electrical insulation barrier
2.1.4 Protection using potential equalization
2.1.5 Effective user protection
2.2 PROTECTION OF USERS
2.2.1 Equipment protection
2.2.2 Additional protection
2.2.3 Overvoltage reduction
3 ANALYSIS OF PROTECTION AGAINST LIGHTNING OVERVOLTAGES
3.1 GENERAL
3.2 FACTORS AFFECTING LIGHTNING INCIDENT PROBABILITY
4 PROTECTION SYSTEMS
5 INSTALLATION METHODS
5.1 GENERAL
5.1.1 Surge suppression device installation requirements
5.1.2 Power earth connectors
5.1.3 Conductor size
5.1.4 Bonding methods
5.2 MDF/IDF INSTALLATIONS
5.2.1 Installation
5.3 DOMESTIC AND NON-MDF/IDF INSTALLATIONS
5.3.1 Installation
5.3.2 Surge suppression device location
5.4 INSTALLATIONS NOT CONNECTED TO THE SUPPLY AUTHORITY MAINS
5.4.1 Installation types
5.4.2 Elements of the installation
APPENDIX A
A1 INTRODUCTION
A2 OVERVOLTAGE DUE TO LIGHTNING
A2.1 Strike to the environment
A2.2 Introduced via telephone lines
A2.3 Introduced via electricity service
A3 POWER SYSTEM DISTURBANCE
A3.1 Electrical contact with power plant
A3.2 Fault currents on HV transmission lines
A3.3 Earth potential rise
A3.4 Switching surges
A3.5 Follow through currents
APPENDIX B
B1 LIGHTNING HAZARD
B2 SELF-HELP PROTECTION
B3 FIRST AID
Cited references in this standard
AUSTEL TS 009
Installation Requirements for Customer Cabling (Wiring Rules)
AUSTEL TS 001
Safety Requirements for Customer Equipment
[Withdrawn]
Approval and test specification — Safety of information technology equipment including electrical business equipment
AS 4117
Surge suppression devices for telecommunication applications
Content history
DR 94004