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anx_V__cpt_2__table_1

I = the electrical current flowing through the meter; I_(n) = the specified reference current for which the transformer operated meter has been designed; I_(st) = the lowest declared value of I at which the meter registers active electrical energy at unity power factor (polyphase meters with balanced load); I_(min) = the value of I above which the error lies within maximum permissible errors (MPEs) (polyphase meters with balanced load); I_(tr) = the value of I above which the error lies within the smallest MPE corresponding to the class index of the meter; I_(max) = the maximum value of I for which the error lies within the MPEs; U = the voltage of the electricity supplied to the meter; U_(n) = the specified reference voltage; f = the frequency of the voltage supplied to the meter; f_(n) = the specified reference frequency; PF = power factor = cosφ = the cosine of the phase difference φ between I and U.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-06 · Text as adopted (Official Journal); later amendments are not incorporated in this text.