1、Rue de Stassart. 35 - 1050 Bruxelles TBI.: (+ 32 2) 519.68.71 - Fax: (+ 32 2) 519.89.19 Teletex 208 2210097 I s sue 1 CENCEL - TX 172210097 HO 581 S1 1991-04-18 April 1991 Application guide for calculation of short-circuit currents in low-voltage radial systems Guido dapplication pour 10 calcul des
2、courants do court-circuit dans in UnVOrinrSChten Drehstrom- lor riseaux i basse tension radiaux Nirderspannungsstrahlonnetzen; Borochnung von Kurzschlustrmen Anmndungsloitfrden RD: IEC 781:1989; IEC/lC 73 (not appended) This Harmonization Document consists of the following: - Titlo Pago Rolrtod to D
3、irectivo: - date of ratification : 1991-03-15 date of announcement : 1991-09-01 date of latest publication : 1992-03-01 date of withdrawal : 1992-03-01 LIST OF NATIONAL STANDARDS IS GIVEN OVERLEAF HARMONIZED NATIONAL STANDARDS = 3404583 0034323 3 W I HO 581 S1:1991 AT : NOS BE : NOS CH : NOS DE : NO
4、S OK : NOS ES : FI : NOS FR : NOS GB : NOS GR : NOS I : NOS IS : IT : NOS LU : NOS NL : NO : NOS PT : NOS SE : NOS 3404583 U034324 5 U HARMONIZATION DOCUMENT DOCUMENT DHARMONISATION HARl4ONISIERUNGSDOKUMENT HO 581 S1 April 1991 UOC 621.316.9.001.24:621.3.025.027.2 Descriptors: Guide, calculation of
5、short-circuit current, low-voltage radial systems ENGLISH VERSION APPLICATION GUIDE FOR CALCULATION OF SHORT-CIRCUIT CURRENTS IN LOU-VOLTAGE RADIAL SYSTEMS (IEC 781:1989) Guide dapplication pour le calcul des courants de court-circuit dans lor risoaux i basso tonsion radiaux (CE1 781:1989) Borochnun
6、g von Kurzschlu6strmen in unvormaschton Drohstrom- Niodorsprnnungsstrrhlonnotzon: Anmndungsloitfrdon (IEC 781:1989) This Harmonization Document was approved by CENELEC on 1991-03-15. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for impl
7、ementation of this Harmonization Document on a national level, Up-to-date lists and bibliographical references concerning national implementation may be obtainod on application to the Central Secretariat or to any CENELEC member. This Harmonization Document exists in three official versions (English
8、, French, Gorman). CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greeco, Icolend, Irolrnd, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotec
9、hnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Contra1 Socretrrirt: ruo do Stasrart 35, 0-1050 rurrolr 1991 Copyright reserved to CENELEC members Ref. No. HD 581 S1:1991 E 3404583 0034325 7 D Page 2 HD 581 S1:1991 FOREWORD The
10、CENELEC questionnaire procedure, performed for finding out whether or not the International Standard IEC 781:1989 could be accepted without textual changes, has shown that no CENELEC common modifications were necessary for the acceptance as Harmonization Document. The reference document was submitte
11、d to the CENELEC members for formal vote and was approved by CENELEC as HD 581 S1 on 15 March 1991. The following dates were fixed: - latest date of announcement of the HD at national level - latest date of publication of a harmonized national standard - latest date of withdrawal of conflicting nati
12、onal standards (doa) 1991-09-01 (dop) 1992-03-01 (daw) 1992-03-01 Annexes designated “normative“ are part of the body of the standard, In this standard, annex ZA is normative. ENDORSEMENT NOTICE The text of the International Standard IEC 781:1989 was approved by CENELEC as a Harmonization Document w
13、ithout any modification. 3404583 0034326 9 M ANHEX ZA (normative) OTHER INTERNATIONAL PUBLICATIONS QUOTED IN THIS STANDARD WITH THE REFERENCES OF THE RELEVANT EUROPEAN PUBLICATIONS When the international publication has been modified by CENELEC common modifications, indicated by (mod), the relevant
14、EN/HD applies. IEC . Publication Date Title 38 (mod) 1983 IEC standard voltages 50 International Electrotechnical Vocabulary (IEV) 50 (131) 1978 Chapter 131: Electric and magnetic circuits 50 (151) 1978 Chapter 151: Electrical and magnetic devices 50 (441) 1984 Chapter 441: Switchgear, controlgear and fuses 909 1988 Short-circuit current calculation in three-phase a.c. systems ENIHD HD 472 S1* - - - - - * Title of ID: Nominal voltages for low voltage public electricity supply systems
