Ol tri-feis pawa mita em ol bikpela samting we ol i save yusim long ol pawa sistem long skelim stret tripela-feis AC eneji konsumsen. Ol i save yusim planti long ol indastriel, komesel, na ol bikpela residensiel aplikesen. Ol teknikel prinsipol bilong ol i stap long 'electromagnetic induction' o 'electronic metering' teknoloji. Long rot bilong bungim tripela-feis voltej na karent signal, ol i save skelim ol 'cumulative values' bilong 'active', 'reactive', na 'aparent power', na bihain ol i kisim 'quantitative statistical analysis' bilong 'electrical energy'.
Long sait bilong straksa, ol 'traditional three-phase electricity meters i save yusim wanpela 'electromagnetic mechanical design'. Wok bung bilong magnetik fluks we i kamap long ol 'voltage' na 'current coils' i save kirapim 'rotation' bilong wanpela 'aluminium disk', na 'rotation speed' i wankain olsem pawa. Wanpela 'gear transmission mechanism' i save bungim ol 'rotations' na soim 'reading'. Ol ilektronik tri-feis pawa mita bilong nau i save yusim ol 'microprocessors' na ol 'high-precision analog-to-dijitel konveta (ADC). Ol i save kisim stret ol 'instantaneous values' bilong tripela '-' 'phase voltage' na 'current', na skelim 'instantaneous power' yusim ol 'digital signal processing algorithms', na bungim ol 'energy data'. Ol ilektronik pawa mita i save givim gutpela skelim stret, strongpela intaferens imuniti, na sapotim ol rimot komunikesen olsem RS-485, karia wev, o waiales transmisin, na i helpim gutpela pawa grid menesmen. Bikpela samting bilong ol tripela-feis pawa mita em long strong bilong ol long karim ol tri-feis lod we i gat balens na ol lod we i no balens. Ol indastriel ikwipmen i save yusim tripela-feis pawa saplai long mekim wok i kamap gutpela moa, na ol mita bilong pawa i mas skelim stret 'vector sum' bilong pawa bilong wanwan feis long meksua olsem olgeta eneji data i stret. Na tu, ol nupela mita bilong pawa i save bungim ol samting olsem 'harmonic analysis', 'demand statistics', na 'power outage logging', na dispela i save givim data sapot long grid status monitoring na yusa eneji efisiensi optimaisesen.
Long aplikesen level, seleksen bilong tripela-feis pawa mita i nidim tingting long reit voltej, karent ranj, na envairomen kompatibiliti. Olsem, ol indastrial senario i ken nidim ol mita long sanap strong long ol bikpela lod fluktuesen na ol hatpela tempereja kondisen, tasol ol komesal bilding i save putim namba wan samting long komyunikesen intafes kompatibiliti. Wantaim divelopmen bilong ol smat grid, ol smat pawa mita wantaim IoT kapabiliti i wok long kamap bikpela samting, na sapotim ril-taim pawa prais rispons na distributed eneji risos ekses menesmen, na i mekim pawa sistem i kamap gutpela moa na yusa i wok bung wantaim.
Long bihain taim, tripela-feis pawa mita teknoloji bai go het long kamap gutpela moa, netwok, na multi-fanksenel integresen, na kamap wanpela ki infrastraksa bilong wokim wanpela gutpela, dipen, na sastenebel eneji sistem.
