ДСТУ EN 60909-0:2022 Струми короткого замикання в трифазних системах змінного струму. Частина 0. Розрахунок струмів (EN 60909-0:2010, IDT; IEC 60909-0:2009, IDT)

ДСТУ EN 60909-0:2022
(EN 60909-0:2016, IDT; IEC 60909-0:2016, IDT)

Струми короткого замикання в трифазних системах змінного струму.
Частина 0. Розрахунок струмів

 
   
 
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

CONTENTS

FOREWORD

1 Scope

2 Normative references

3 Terms and definitions

4 Symbols, subscripts and superscripts

4.1 General

4.2 Symbols

4.3 Subscripts

4.4 Superscripts

5 Characteristics of short-circuit currents: calculating method

5.1 General

5.2 Calculation assumptions

5.3 Method of calculation

6 Short-circuit impedances of electrical equipment

6.1 General

6.2 Network feeders

6.3 Transformers

6.4 Overhead lines and cables

6.5 Short-circuit current-limiting reactors

6.6 Synchronous machines

6.7 Power station units

6.8 Wind power station units

6.8.1 General

6.9 Power station units with full size converter

6.10 Asynchronous motors

6.11 Static converter fed drives

6.12 Capacitors and non-rotating loads

7 Calculation of initial short-circuit current

7.1 General

7.3 Line-to-line short circuit

7.4 Line-to-line short circuit with earth connection

7.5 Line-to-earth short circuit

8 Calculation of peak short-circuit current

8.1 Three-phase short circuit

8.2 Line-to-line short circuit

8.3 Line-to-line short circuit with earth connection

8.4 Line-to-earth short circuit

9 Calculation of symmetrical breaking current

9.1 Three-phase short circuit

9.2 Unbalanced short-circuits

10 DC component of the short-circuit current

11 Calculation of steady-state short-circuit current

11.1 General

11.2 Three-phase short circuit

11.3 Unbalanced short circuits

12 Short circuits at the low-voltage side of transformers, if one line conductor is interrupted at the high-voltage side

13 Terminal short circuit of asynchronous motors

14 Joule integral and thermal equivalent short-circuit current

Annex A (normative) Formulas for the calculation of the factors m and n

Annex B (informative) Nodal admittance and nodal impedance matrices

Bibliography