Patent ID: 9714964
Date: 2017-07-25
CPC Classifications: G01R

Claim:
1. A meter for recording an electrical energy withdrawn from an electrical supply network, the meter comprising: a first component for measuring a currently supplied supply voltage; and a computing element for determining an operation state of the meter for calculating a billing unit based on a currently withdrawn electrical energy, wherein the operation state is modified in accordance with the measured supply voltage independent of electrical consumption, such that the currently supplied supply voltage that is higher or lower than a nominal voltage causes the computing element to determine that the meter is to be operated under a modified operation state based on a value of the currently supplied supply voltage that is respectively higher or lower than the nominal voltage to define the billing unit, wherein under the modified operation mode state, a correction factor used to adjust the billing unit is formed based on the nominal voltage of the supply network relative to the currently supplied supply voltage, and wherein the correction factor increases disproportionately as the measured supply voltage decreases when the measured supply voltage is less than the nominal voltage and the correction factor decreases disproportionately as the measured supply voltage increases when the measured supply voltage is greater than the nominal voltage, and wherein the billing unit is determined based on an amount of energy used and is adjusted by the correction factor.