短路电流计算
内容介绍:施耐德公司的技术资料,关于短路电流计算,使用的方法有:
1.Calculation of Isc by the impedance method
1 Introduction p. 4
1.1 The main types of short-circuits p. 5
1.2 Etablishing the short-circuit current p. 7
1.3 Standardised Isc calculations p. 10
1.4 Methods presented in this document p. 11
1.5 Basic assumptions p. 11
2 Calculation of Isc by the impedance method 2.1 Isc depending on the different types of short-circuit p. 12
2.2 Determining the various short-circuit impedances p. 13
2.3 Relationships between impedances at the different
voltage levels in an installation p. 18
2.4 Calculation example p. 19
3 Calculation of Isc values in a radial 3.1 Advantages of this method p. 23
3.2 Symmetrical components p. 23
3.3 Calculation as defined by IEC 60909 p. 24
3.4 Equations for the various currents p. 26
3.5 Calculation example p. 27
4 Computerised calculations and conclusion p. 31
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