BS EN 61472:2004 - Live working. Minimum approach distances for a.c. systems in the voltage range 72,5 kV to 800 kV. A method of calculation

BS EN 61472:2004

Live working. Minimum approach distances for a.c. systems in the voltage range 72,5 kV to 800 kV. A method of calculation

Status : Revised, Superseded, Withdrawn   Published : January 2005 Replaced By : BS EN 61472:2013

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Describes a method for calculating the minimum approach distances for live working, at maximum voltages between 72,5 kV and 800 kV. This standard addresses system overvoltages, and the working air distances between parts and/or workers at different potentials. The required withstand voltage and minimum approach distances calculated by the method described in this standard are evaluated taking into consideration the following: - workers are trained for, and skilled in, working in the live working zone; - the anticipated overvoltages do not exceed the value selected for the determination of the required minimum approach distance; - transient overvoltages are the determining overvoltages; - tool insulation has no continuous film of moisture present on the surface; - no lightning is seen or heard within 10 km of the work site; - allowance is made for the effect of conducting components of tools; - the effect of altitude on the electric strength is taken into consideration. For conditions other than the above, the evaluation of the minimum approach distances may require specific data, derived by other calculation or obtained from additional laboratory investigations on the actual situation. The contents of the corrigenda of May 2005 and November 2006 have been included in this copy.




Standard NumberBS EN 61472:2004
TitleLive working. Minimum approach distances for a.c. systems in the voltage range 72,5 kV to 800 kV. A method of calculation
StatusRevised, Superseded, Withdrawn
Publication Date20 January 2005
Withdrawn Date01 May 2016
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)CIGRE, Brochure No. 151:2000, IEC 61477:2001, IEC 60743:2001, IEC 60050-604:1987/AMD 1:1998, CIGRE, Brochure No. 72:1992, IEC 60050-604:1987, IEC 60071-1:1993, IEC 60050-195:1998, IEC 60071-2:1996, IEC 60050-651:1999
Replaced ByBS EN 61472:2013
International RelationshipsEN 61472 (IEC 61472:2004) AS,IEC 61472:2004,IEC 61472:2004/COR1:2005
Draft Superseded By02/205451 DC
DescriptorsFormulae (mathematics), Mathematical calculations, Voltage, Safety measures, Electrical insulation, Electrical safety, Alternating current, Electric shocks, Electrical insulating materials, Overvoltage protection, Overvoltage, Electrical insulation devices, Live working, Occupational safety
ICS13.260
29.240.20
29.260.99
Title in FrenchTravaux sous tension. Distances minimales d'approche pour des reseaux a courant alternatif de tension comprise entre 72,5 kV et 800 kV. Une methode de calcul
Title in GermanArbeiten unter Spannung. Mindest-Arbeitsabstaende fuer Wechselspannungsnetze im Spannungsbereich von 72,5 kV bis 800 kV. Berechnungsverfahren
CommitteePEL/78
ISBN0 580 45277 8
PublisherBSI
FormatA4
DeliveryNo
Pages46
File Size771 KB
Price£240.00


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