I.S. EN 62271-100:2009

National Foreword
FOREWORD
1 General
2 Normal and special service conditions
3 Terms and definitions
4 Ratings
5 Design and construction
6 Type tests
7 Routine tests
8 Guidance to the selection of circuit-breakers
   for service
9 Information to be given with enquiries, tenders
   and orders
10 Rules for transport, storage, installation,
   operation and maintenance
11 Safety
12 Influence of the product on the environment
Annex A (normative) - Calculation of transient recovery
        voltages for short-line faults from rated
        characteristics
Annex B (normative) - Tolerances on test quantities during
        type tests
Annex C (normative) - Records and reports of type tests
Annex D (normative) - Determination of short-circuit power
        factor
Annex E (normative) - Method of drawing the envelope of the
        prospective transient recovery voltage of a circuit
        and determining the representative parameters
Annex F (normative) - Methods of determining prospective
        transient recovery voltage waves
Annex G (normative) - Rationale behind introduction of
        circuit-breakers class E2
Annex H (informative) - Inrush currents of single and
        back-to-back capacitor banks
Annex I (informative) - Explanatory notes
Annex J (informative) - Test current and line length
        tolerances for short-line fault testing
Annex K (informative) - List of symbols and abbreviations
        used in this standard
Annex L (informative) - Explanatory notes on the revision
        of TRVs for circuit-breakers of rated voltages higher
        than 1 kV and less than 100 kV
Annex M (normative) - Requirements for breaking of
        transformer-limited faults by circuit-breakers with
        rated voltage higher than 1 kV
Annex N (normative) - Use of mechanical characteristics and
        and related requirements
Annex O (informative) - Guidance for short-circuit and switching
        test procedures for metal-enclosed and dead tank
        circuit-breakers
Annex P (normative) - Calculation of the TRV parameters during
        asymmetrical fault condition (T100a)
Annex Q (informative) - Examples for the application of the
        asymmetry criteria during asymmetrical test-duty T100a
Annex R (normative) - Requirements for circuit-breakers with
        opening resistors
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Pertains to a.c. circuit-breakers designed for indoor or outdoor installation and for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1000 V.