IEC 60287-1-2:1993

FOREWORD
1 Scope
2 Normative references
3 Symbols
4 Description of method
    4.1 General
    4.2 Outline of method
    4.3 Criteria for use of formulae and co-efficients
5 Formulae for sheath loss factors for high-
    resistance sheaths in a single circuit
6 Calculation of the coefficients H, N and J
    6.1 Allocation of coefficients to each cable,
          time sequence and phase identification
    6.2 Calculation of coefficients H(1,2 and 3)
          table 1
    6.3 Calculation of coefficients N(1,2,3,4,5 and 6)
          table 2
    6.4 Calculation of coefficients J(1,2,3,4,5 and 6)
          tables 3 to 11
    6.5 Calculation of coefficients Gs and gs
7 Notes on transposition of cables
8 Worked examples of calculation of eddy current losses
    8.1 Introduction
    8.2 Example 1
    8.3 Example 2
Tables

Provides a method for calculating theeddy current losses in the metallic sheaths of single-core cablesarranged as a three-phase, double-circuit in flat formation.