The standard applies to new kilowatt-hour meters of class 2, based on the induction principle, for direct mains connection, designed for single or multiple tariff measurement of active electrical energy with an alternating voltage of a maximum of 600 V and a frequency of 50 Hz.
NEN 1803-1985 history
1985NEN 1803-1985 Class 2 alternating-current watthour meters - Acceptance inspection