NF C44-470-1/A1*NF EN 50470-1/A1:2018 Electricity metering equipment (a.c.) - Part 1 : general requirements, tests and test conditions - Metering equipment (class indexes A, B and C)
2018NF C44-470-1/A1*NF EN 50470-1/A1:2018 Electricity metering equipment (a.c.) - Part 1 : general requirements, tests and test conditions - Metering equipment (class indexes A, B and C)