PD IEC/TR 62271-308:2002
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
High-voltage switchgear and controlgear Guide for asymmetrical short-circuit breaking test duty T100a
Hardcopy , PDF
07-31-2009
English
10-10-2002
FOREWORD
1 General
1.1 Scope
1.2 Reference documents
2 Definitions
3 Ratings
4 Test procedure
4.1 Demonstration of arcing times during three-phase
tests for test-duty T100a
4.2 Demonstration of arcing times during single-phase
tests in substitution of three-phase conditions
in a non-solidly earthed neutral system (first
pole-to-clear factor 1,5) for test-duty T100a
4.3 Demonstration of arcing times during single-phase
tests in substitution of three-phase conditions in
a solidly earthed neutral system (first
pole-to-clear factor 1,3) for test-duty T100a
4.4 DC component of short-circuit breaking current
4.5 Test-duty T100a
5 Asymmetry criteria
5.1 Direct tests
5.2 Synthetic tests
5.3 Adjustment measures
Annex A Calculation of the TRV parameters during
asymmetrical fault condition (T100a)
Annex B Table B.1 - Tolerances on test quantities for
type tests
Annex C Alternative to C.2.5 of IEC 62271-100
Annex D Examples for the application of the asymmetry
criteria during asymmetrical test duty
Annex E Updated information regarding item g) of 1.2.1
of IEC 62271-100
Figures and Tables
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