VDI/VDE/DGQ/DKD 2622 Part 24.1:2019 Edition

This standard specifies a calibration procedure for the calibration of single- and multi-phase power meters. The standard covers power measuring instruments for measuring DC power, AC active power, AC reactive power and AC apparent power, power factor (phase angle) as well as all basic measurands contained therein (current and voltage) and all measurands derived from these (with or without external current transformers). If extra care is taken when connecting, this standard also applies to power-measuring instruments with no external energy supply (e.g. adapter plugs or rail systems).