5. Suitability

Directive 2014/32/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of measuring instruments (recast) Text with EEA relevance · European Union

5.1. Below the rated operating voltage the positive error of the meter shall not exceed 10 %. 5.2. The display of the total energy shall have a sufficient number of digits to ensure that when the meter is operated for 4000 hours at full load (I = I_(max), U = U_(n) and PF = 1) the indication does not return to its initial value and shall not be able to be reset during use. 5.3. In the event of loss of electricity in the circuit, the amounts of electrical energy measured shall remain available for reading during a period of at least 4 months. When the voltage is applied with no current flowing in the current circuit (current circuit shall be open circuit), the meter shall not register energy at any voltage between 0,8 U_(n) and 1,1 U_(n). The meter shall start and continue to register at U_(n), PF = 1 (polyphase meter with balanced loads) and a current which is equal to I_(st).

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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.