Komitenavnet er "måleinstrumenter", men det meste av arbeidet relateres energimåling og laststyring.
NEK/NK66 har elektronisk måleutstyr.
Tekst fra IEC om Electrical energy measurement, tariff- and load control
To prepare international standards for equipment for electrical energy measurement, tariff- and load control, customer information, payment, local and/or remote data exchange, using electromechanical and/or electronic technologies, for applications ranging from electrical energy generation to residential.
The standards may include requirements and test methods to cover mechanical, environmental, electrical, safety, metrology, dependability aspects, as well as functional requirements and data models.
NEK/NK45 Måleinstrumenter brukt i forbindelse med ioniserende stråling.
Aktiviteten i IEC listes under "TC dashboard" (lenken nedenfor), valg "work programme".