内容介绍:, W$ Y6 h( j' }
施耐德公司的技术资料,关于短路电流计算,使用的方法有: % d0 |' s" b) @5 N1.Calculation of Isc by the impedance method8 G2 B) i! ]% p3 ? K' k/ ~# T9 p
1 Introduction p. 4; R& A" X6 z' d; T
1.1 The main types of short-circuits p. 5 ) D1 X2 ? G" E1.2 Etablishing the short-circuit current p. 7( K3 J. W+ |! O7 y! x' z3 g
1.3 Standardised Isc calculations p. 10 ! r4 s" `8 B# }) y' W; P1 S: L. H% o( J1.4 Methods presented in this document p. 11 , [; e; F4 g5 G1.5 Basic assumptions p. 11% A0 y* \. H7 G! Z
2 Calculation of Isc by the impedance method 2.1 Isc depending on the different types of short-circuit p. 12* t( v2 Z* ^+ E# W0 V
2.2 Determining the various short-circuit impedances p. 13. |5 n! e q7 n
2.3 Relationships between impedances at the different7 j9 D( Q2 f4 a# C2 v* B
voltage levels in an installation p. 187 i: p4 r* `) Z- D
2.4 Calculation example p. 19 1 [6 c- g G6 i5 q3 E, m$ h( @3 Calculation of Isc values in a radial 3.1 Advantages of this method p. 23' e0 H8 H; p) n0 q) M
3.2 Symmetrical components p. 23" |0 ^: A/ w4 x9 k
3.3 Calculation as defined by IEC 60909 p. 24 & {! D) I5 d" t9 O5 H3.4 Equations for the various currents p. 26 B: l" K. d# g1 i6 ^3.5 Calculation example p. 27+ J7 E3 a: Q- }) c
4 Computerised calculations and conclusion p. 31 ' o+ I- B$ O$ h( j, {. G- E. M) C& A * I/ |/ @& W' D5 G9 ^总共36页,贴近实际应用。-%-18926-%--%-18953-%--%-18986-%-