Ratio Error ndi Phase angle error test
Kulondola kwa data yamayeso apamwamba komanso okhazikika
Open-circuit & close-circuit demagnetization ntchito
Ndi kupitilira apo, mphamvu yamagetsi, reverse polarity, kuchulukirachulukira komanso chitetezo cha ma waya olakwika
Muyezo wogwiritsidwa ntchito: IEC 60044 kapena ANSI/IEEE C57.13 (malingana ndi zomwe kasitomala akufuna)