Calibration of Electrical Power

A power meter, watt meter or power converter measures the electrical power and may be designed for single-phase or poly-phase connection. Calibration of these assures that their measurement errors can be kept within the desired limits.

The normal calibration method is to generate the desired power levels, and to compare the measured power of the unit under test with the power measured by a reference system. For this purpose SP has several reference system with uncertainty level down to below 0.01 %. The application may be one-phase or poly-phase and for any power factor. The frequency is normally 50 Hz but may be varied from 16.7 Hz to 20 kHz


DSWM - a Digital Multifunctional Sampling WattMeter standard

We are pleased to be able to provide for purchase our top-of-the-line power measuring system for power quality. Read more...

Related Information


View A-Z ...

Contact Persons

Kristofer Holmberg

Phone: +46 10 516 53 79

RISE Research Institutes of Sweden, Phone 010-516 50 00, E-mail

The RISE institutes SP, Innventia and Swedish ICT have merged in order to become a stronger research and innovation partner for businesses and society.
During 2017 will be one of several websites within RISE. Please visit for more information about RISE.