SN EN 60618 : 1997 AMD 2 1997

National foreword
Cooperating organizations
1 Scope
2 Terms and definitions
    2.1 Inductive voltage divider
    2.2 Transfer ratio
    2.3 Fiducial value
    2.4 Transfer ratio error
    2.5 Input impedance
    2.6 Output impedance
    2.7 Influence quantity
    2.8 Variation
    2.9 Reference conditions
    2.10 Nominal range of use
    2.11 Limiting values of an influence quantity
    2.12 Circuit insulation voltage (nominal circuit
          voltage)
    2.13 Common mode voltage
    2.14 D.C. series mode input current
    2.15 Distortion factor
    2.16 Electrostatic screen
    2.17 Leakage current screen
    2.18 Resolution
    2.19 Auxiliary equipment
    2.20 Accuracy
3 Classification
4 Limits of intrinsic error
    4.1 Permissible limits of intrinsic error
    4.2 Selectable ratios
5 Conditions for the determination of intrinsic errors
6 Permissible variations
    6.1 Limits of variations
    6.2 Conditions for the determination of the
          variations
    6.3 Variation due to d.c. series mode current
    6.4 Variation due to the influence of an externally
          produced magnetic field
7 Additional electrical and mechanical requirements
    7.1 Limiting values of input voltage
    7.2 Input voltage switching
    7.3 Voltage test and other safety requirements
    7.4 Insulation resistance test
    7.5 Limiting conditions for storage, transport
          and use
8 Information, markings and symbols
    8.1 Information
    8.2 Markings, symbols and their locations
    8.3 Documentation
    8.4 Example of the marking of an IVD
Appendix A - Transfer ratio and other performance
characteristics
Figures
Annex ZA (normative) Normative references to international
publications with their corresponding European publications

Applies to inductive voltage dividers which are made to provide a number of accurate ratios of alternating voltage over several frequencies and meant to be used with negligible burden on their output.