Products & Services
Information on the products and services offered in the Electrical Measurement area.
Electrical Measurement products & services
- The measurement of power at NPL is based on a digital sampling technique.
- As industry has expanded the frequency range of their AC sources / measuring systems, NPL has a UKAS accredited service that can calibrate customers measuring systems, e.g. 5790's, 4920's up to 100 MHz, currently at voltages from 0.5 to 1V.
- AC/DC transfer links quantum DC voltage traceability to a wide range of ac frequencies using the heating effect of electrical current.
- Over the last ten years NPL has been developing new measurement techniques that have enabled a reduction in uncertainties for specific types of capacitance standards in the 0.001 pF to 10 mF range at frequencies up to 1 MHz.
- NPL is able to measure a wide range of capacitance standards of around 80 different types of capacitors, from more than 20 leading manufacturers, over the range 0.001 pF to 10 mF.
- NPL has developed a number of Coaxial AC Bridge Systems suitable for national standards laboratories for precision impedance and AC voltage ratio measurements at the highest accuracy levels.
- NPL carries out UKAS accredited measurements of current transformers for customers including the Electricity Supply Industry and transformer manufacturers.
- Infomation on harmonics and flicker research areas at NPL, including the NPL Power Quality Waveform Library.
- NPL provides UKAS-accredited calibration of IVDs at specified discrete frequencies within the range 40 Hz to 120 kHz.
- A portable and rugged, yet high precision, Power Analyser for laboratory and on-site electrical measurements. Designed for high granularity three phase power and power quality measurements at the 0.01% level.
- NPL maintains two primary self-inductors whose values are established from capacitance standards using two special transfer inductance standards.
- NPL has developed highly stable four terminal-pair capacitance standards of compact design.