Table of Contents

1 -  AS 4262.1-1995 TELECOMMUNICATION OVERVOLTAGES - PROTECTION OF PERSONS
4 -  PREFACE
5 -  CONTENTS
6 -  FOREWORD
7 -  SECTION 1 - SCOPE AND GENERAL
7 -  1.1 SCOPE
7 -  1.2 APPLICATION
7 -  1.3 REFERENCED DOCUMENTS
7 -  1.4 DEFINITIONS
7 -  1.4.1 Bonding conductor
8 -  1.4.2 Building
8 -  1.4.3 Carrier
8 -  1.4.4 Customer cabling
8 -  1.4.5 Intermediate distribution frame (IDF)
8 -  1.4.6 Main distribution frame (MDF)
8 -  1.4.7 Overvoltage
8 -  1.4.8 Telecommunication facilities
8 -  1.4.9 Three-electrode gas-filled surge suppression device
8 -  1.4.10 User environment
9 -  SECTION 2 - PRINCIPLES
9 -  2.1 GENERAL CONSIDERATIONS FOR PROTECTION
9 -  2.1.1 Overvoltages in the user environment
10 -  2.1.2 Protection concepts
10 -  2.1.3 Protection using an electrical insulation barrier
10 -  2.1.4 Protection using potential equalization
10 -  2.1.5 Effective user protection
11 -  2.2 PROTECTION OF USERS
11 -  2.2.1 Equipment protection
11 -  2.2.2 Additional protection
11 -  2.2.3 Overvoltage reduction
13 -  SECTION 3 - ANALYSIS OF PROTECTION AGAINST LIGHTNING OVERVOLTAGES
13 -  3.1 GENERAL
13 -  3.2 FACTORS AFFECTING LIGHTNING INCIDENT PROBABILITY
17 -  SECTION 4 - PROTECTION SYSTEMS
18 -  SECTION 5 - INSTALLATION METHODS
18 -  5.1 GENERAL
18 -  5.1.1 Surge suppression device installation requirements
18 -  5.1.2 Power earth connectors
18 -  5.1.3 Conductor size
18 -  5.1.4 Bonding methods
18 -  5.2 MDF/ IDF INSTALLATIONS
18 -  5.2.1 Installation
18 -  5.3 DOMESTIC AND NON-MDF/ IDF INSTALLATIONS
18 -  5.3.1 Installation
18 -  5.3.2 Surge suppression device location
18 -  5.4 INSTALLATIONS NOT CONNECTED TO THE SUPPLY AUTHORITY MAINS
18 -  5.4.1 Installation types
19 -  5.4.2 Elements of the installation
22 -  APPENDIX A - SOURCES OF OVERVOLTAGE AND MODES OF ENTRY
22 -  A1 INTRODUCTION
22 -  A2 OVERVOLTAGE DUE TO LIGHTNING
22 -  A2.1 Strike to the environment
23 -  A2.2 Introduced via telephone lines
23 -  A2.3 Introduced via electricity service
23 -  A3 POWER SYSTEM DISTURBANCE
24 -  A3.1 Electrical contact with power plant
24 -  A3.2 Fault currents on HV transmission lines
25 -  A3.3 Earth potential rise
25 -  A3.4 Switching surges
25 -  A3.5 Follow through currents
26 -  APPENDIX B - LIGHTNING HAZARDS AND SELF-HELP PROTECTION
26 -  B1 LIGHTNING HAZARD
26 -  B2 SELF- HELP PROTECTION
26 -  B3 FIRST AID

Abstract

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.

Scope

This Standard specifies the 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.

This Standard does not apply to the carriers' networks.

NOTE: See the AUSTEL Technical Standards for the mandatory requirements for the connection of equipment to carriers' networks.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	TE-020
Supersedes	DR 94004