Yokogawa’s European Calibration Laboratory has become the world’s first non-governmental facility to receive full ISO17025 accreditation for power measurements of up to 100kHz. This is in addition to its established capability for providing high-accuracy calibration at 50Hz, especially at very low power factors (down to 0.0001) and at high currents.
The growth in renewable energy markets and the need to optimise energy efficiency while complying with international standards has been driving the demand for certainty in power measurements, especially at low power factors. In addition, the inverters used in renewable energy systems are switching at higher speeds: a scenario that introduces harmonics at higher frequencies.
There is also demand for high-frequency power measurements on switch-mode power supplies, electronic lighting ballasts, soft starters in motor controls and frequency converters in traction applications.