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PD IEC/TR 60909-2:2008

Current
Current

The latest, up-to-date edition.

Short-circuit currents in three-phase a.c. systems Data of electrical equipment for short-circuit current calculations
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

11-13-2008

FOREWORD
1 General
  1.1 Scope and object
  1.2 Normative references
2 Data for electrical equipment
  2.1 General
  2.2 Data of typical synchronous machines
  2.3 Data of typical two-winding, three-winding
      and auto-transformers
  2.4 Data of typical overhead lines, single
      and double circuits
  2.5 Data of typical high-voltage, medium-voltage
      and low-voltage cables
  2.6 Data of typical asynchronous motors
  2.7 Busbars
Annex A (informative) - Information from National
                        Committees
Bibliography

Describes data of electrical equipment collected from different countries to be used when necessary for the calculation of short-circuit currents in accordance with IEC 60909-0.

This part of IEC 60909 comprises data of electrical equipment collected from different countries to be used when necessary for the calculation of short-circuit currents in accordance with IEC 60909-0.

Generally, electrical equipment data are given by the manufacturers on the name plate or by the electricity supplier.

In some cases, however, the data may not be available. The data in this report may be applied for calculating short-circuit currents in low-voltage networks if they are in accordance with typical equipment employed in the user’s country. The collected data and their evaluation may be used for medium- or high-voltage planning purposes and also for comparison with data given by manufacturers or electricity suppliers. For overhead lines and cables the electrical data may in some cases also be calculated from the physical dimensions and the material following the equations given in this report.

Thus this technical report is an addition to IEC 60909-0. It does not, however, change the basis for the standardized calculation procedure given in IEC 60909-0 and IEC 60909-3.

Committee
W/-
DevelopmentNote
Supersedes BS PD7639-2(1994). (02/2009)
DocumentType
Standard
Pages
50
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
IEC TR 60909-2:2008 Identical

IEC 60038:2009 IEC standard voltages
IEC 60909-3:2009 Short-circuit currents in three-phase AC systems - Part 3: Currents during two separate simultaneous line-to-earth short circuits and partial short-circuit currents flowing through earth
IEC TR 60909-1:2002 Short-circuit currents in three-phase a.c. systems - Part 1: Factors for the calculation of short-circuit currents according to IEC 60909-0
IEC 60909-3 : 3.0 SHORT-CIRCUIT CURRENTS IN THREE-PHASE AC SYSTEMS - PART 3: CURRENTS DURING TWO SEPARATE SIMULTANEOUS LINE-TO-EARTH SHORT CIRCUITS AND PARTIAL SHORT-CIRCUIT CURRENTS FLOWING THROUGH EARTH
IEC 60909-0:2016 Short-circuit currents in three-phase a.c. systems - Part 0: Calculation of currents

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