Important international standard for smart meters now available as commented version

An important international standard for smart meters is now available as a commented version (CMV). The commented version of IEC 62055-31:2022 provides a quick and easy way to compare all the changes with the previous 2005 edition of the standard.

The CMV provides comments from experts who developed the standard to explain the reasons for the most relevant changes, as well as to clarify other points.

Electricity meters measure energy consumption and some provide load management functionality. In most countries, the energy consumption measured by the meter forms the basis for energy suppliers to generate a bill for consumers to pay for their usage.<_o3a_p>

In some countries, payment meters are used that provide consumer with the ability to pay for their energy consumption at the meter. Payment meters have the facility to accept credit by means of a token (e.g., smart card, key, or over the air). They measure the energy usage and, through the use of in-built tariff data, deduct the charge from the available credit.

Payment meters are fitted with a supply control switch that cuts off the supply when the available credit has been exhausted. The supply is restored when more credit is added. Features such as Emergency Credit allow consumers to restore their supply if they cannot, for some reason, manage to top up their credit.<_o3a_p>

Smart meters often have the facility to be configured as payment meters, providing the ability to be topped up remotely over the air in real time, which can be more convenient for consumers.<_o3a_p>

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The 2022 edition of IEC 62055-31 defines the functional requirements that apply to payment meters, including basic informative requirements as well as test methods for some operations, while also providing flexibility for the wide range of options available on the market. IEC 62055-31 has been designed to align with the requirements of IEC 62052-31 which specifies product safety requirements for equipment for electrical energy measurement and control.<_o3a_p>

The international standard is the work of IEC Technical Committee 13: Electrical energy measurement and control.<_o3a_p>

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