DIN EN 50065-7 : 2002

Introduction
1 Scope
2 Normative references
3 Definitions
4 Requirements
5 Test method
  5.1 General
  5.2 Test conditions
  5.3 Impedance analyser measuring method
  5.4 Voltage ratio method
Annex A (informative) Signalling on low voltage electrical
        installations in the frequency range 3 kHz to
        148,5 kHz, potential problems
Annex B (informative) Minimum value of the equipment impedance
        B.1 Consumer's network impedance
        B.2 Type 1 & 2 equipment impedance versus environment
        B.3 Minimum value of the equipment impedance
Annex C (informative) Impedance measurement method with impedance
        analyser
        C.1 Theory
        C.2 Practice
Annex D (informative) Analysis of voltage ratio method for impedance
        measurement
        D.1 Introduction
        D.2 Principle of the voltage ratio method
        D.3 Measuring notes

Applies to electrical equipment excluding decoupling filters, using signals in the frequency range 3 kHz for data transmission on low voltage electrical networks either on the public supply network or within installations in consumers' premises.