Yuav Ua Li Cas Ntsuas Peb-theem Tam Sim No Nrog Ob-theem CT

Siv ob lub CTs thiab peb lub ammeters tsuas yog ntsuas peb-theem symmetrical loads. Yog hais tias peb-theem loads yog asymmetrical, lub load tam sim no ntawm theem uas tsis yog nruab nrog CTs yog tsis raug.

Nco ntsoov tias CT raug teeb tsa hauv theem A thiab C (ib qho ob theem tau txais), lub sijhawm no, lub polarity ntawm CT yuav tsum tau them nyiaj mloog thaum xaim, piv txwv li, thawj tam sim no ntawm theem A thiab C yog los ntawm CT.

Thaum L1 sab ntws mus rau hauv, A thiab C theem CT theem ob sab K1 cov davhlau ya nyob twg txuas nrog rau A thiab C theem ammeters, thiab lwm yam ob lub davhlau ya nyob twg ntawm A thiab C theem ammeters luv, thiab tom qab ntawd coj mus rau cov xaim mus rau. B theem ammeter, thiab thaum kawg Lwm lub davhlau ya nyob twg ntawm B-theem ammeter rov qab mus rau CT thib ob sab K2 davhlau ya nyob twg (ob lub CT thib ob sab K2 terminals yog luv ua ke thiab hauv av).