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AS 4070-1992

Current

Current

The latest, up-to-date edition.

Recommended practices for protection of low-voltage electrical installations and equipment in MEN systems from transient overvoltages (Reconfirmed 2015)

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

12-10-1992

€15.02
Excluding VAT

Recommends a simple system for the protection of electrical installations and connected equipment from transient voltages exceeding 2500 volt due to lightning discharges and switching.

Committee
EL-007
DocumentType
Standard
ISBN
0 7262 7794 0
Pages
3
ProductNote
Reconfirmed 18/05/2015.This standard as been reconfirmed in Australia in 2015 and remains current in New Zealand. Reconfirmation Notice 18/05/2015
PublisherName
Standards Australia
Status
Current
Supersedes

This Standard recommends a simple system of insulation coordination for nominal 240/415 V, 50 Hz electrical installations in multiple earthed neutral (MEN) systems to avoid damage to wiring and equipment due to transient voltages exceeding 2500 V caused by lightning discharges and switching. Circuits in some installations may be protected for lower overvoltages, but this is not dealt with in this Standard. (For guidance see AS 1768.) This Standard does not apply to the protection of installations from temporary overvoltages which could result from faults in the electricity supply system. It does not apply to the protection of equipment connected to both electricity supply and information technology services (e.g. telephone cables and TV antennas). Consideration needs to be given to a common earthing system for the protection of all electrical services.NOTE: Reference should be made to AUSTEL mandatory Technical Standard 001 which specifies requirements for overvoltage protective devices in equipment to be connected to telecommunication networks. For most applications of this Standard, the telecommunication networks need not be taken into consideration. However, if connections are to be made between systems, or if both systems are enclosed in common ducts, the requirements of this Standard and AUSTEL mandatory Technical Standard 001 should be met. Reference should also be made to AS 3260.

First published as AS 4070-1992.

AS/NZS 1768:2007 Lightning protection
AS 3260-1988 Approval and test specification - Safety of information technology equipment including electrical business equipment
AS/NZS 3260:1993 Approval and test specification - Safety of information technology equipment including electrical business equipment
AS 1307.2-1996 Surge arresters Metal-oxide surge arresters without gaps for a.c. systems (Reconfirmed 2015)
AS 1768-1991 Lightning protection

AS/NZS 1768:2007 Lightning protection
AS/NZS 3084:2003
AS/NZS 3009:1998 Electrical installations - Emergency power supplies in hospitals
AS/NZS 3000:2007 Electrical installations (known as the Australian/New Zealand Wiring Rules)
AS/NZS 3084:2017 Telecommunications installations - Telecommunications pathways and spaces for commercial buildings
SAA HB113-1998 RESIDUAL CURRENT DEVICES - What they do and how they do it (Reconfirmed 2016)
AS/NZS 3000:2000 Electrical installations (known as the Australian/New Zealand Wiring Rules)
AS/NZS 1768(INT):2003 Lightning protection
AS 4262.2-1999 Telecommunication overvoltages Protection of equipment

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