目录简介 | Contents Foreword Introduction 1 General 1.1 Scope 1.2 Normative references 1.3 Terms and definitions 1.4 Symbols, subscripts and superscripts 2 Characteristics of short-circuit currents: calculating method 2.1 General 2.2 Calculation assumptions 2.3 Method of calculation 2.4 Maximum short-circuit currents 2.5 Minimum short-circuit currents 3 Short-circuit impedances of electrical equipment 3.1 General 3.2 Network feeders 3.3 Transformers 3.4 Overhead lines and cables 3.5 Short-circuit limiting reactors 3.6 Synchronous machines 3.7 Power station unit 3.8 Asynchronous motors 3.9 Static converters 3.10 Capacitors and non-rotating loads 4 Calculation of short-circuit currents 4.1 General 4.2 Initial symmetrical short-circuit current I"k 4.3 Peak short-circuit current ip 4.4 DC component of the short-circuit current 4.5 Symmetrical short-circuit breaking current Ib 4.6 Steady-state short-circuit current Ik 4.7 Terminal short circuit of asynchronous motors 4.8 Joule integral and thermal equivalent short-circuit curernt Annex A (Normative) Equations for the calculation of the factors m and n |