Tam sim no transformers, lossis CTs, yog cov cuab yeej siv los ntsuas hluav taws xob tam sim no. Lawv feem ntau siv rau hauv cov tshuab hluav taws xob hluav taws xob los ntsuas qhov tam sim no ntws nyob rau hauv high-voltage kis kab, hauv transformers thiab lwm yam khoom siv hluav taws xob. CTs yog cov khoom tseem ceeb hauv lub tshuab xa hluav taws xob, vim lawv muab txoj hauv kev los ntsuas thiab saib xyuas cov khoom hluav taws xob ntawm lub cev.
a. Rated Primary tam sim no:
Tus nqi ntawm thawj qhov tam sim no uas qhov kev ua tau zoo ntawm qhov tam sim no transformer tau teev los ntawm cov chaw tsim khoom.
b. Rated lub sij hawm luv luv tam sim no (primary):
Nws txhais tau tias yog RMS tus nqi ntawm ac tivthaiv uas CT tuaj yeem nqa tau rau lub sijhawm ntsuas yam tsis muaj kev puas tsuaj vim thermal lossis electrodynamic stresses.
c. Rated Secondary Tam sim no:
Tus nqi ntawm qhov thib ob tam sim no yog cim rau ntawm daim ntawv ntsuam xyuas.
d. Rated tam sim no:
Tus nqi RMS ntawm tam sim no ntawm kev coj los ntawm qhov thib ob winding ntawm CT thaum lub sinusoidal voltage ntawm cov zaus ntsuas yog siv rau theem nrab nrog thawj winding qhib-circuited.
e. Rated Burden:
Lub nra uas tau muab los ntawm cov chaw tsim khoom uas CT ua haujlwm nrog qhov tseeb.
f. Tam sim no yuam kev los yog Ratio yuam kev:
Qhov feem pua yuam kev nyob rau hauv qhov loj ntawm qhov thib ob tam sim no yog txhais raws li qhov yuam kev tam sim no.
g. Phase angle yuam kev:
Lub kaum sab xis nruab nrab ntawm thawj vector tam sim no thiab thim rov qab theem nrab tam sim no vector.
h. Composite yuam kev:
Tus nqi rms ntawm qhov sib txawv (Knits - Ip) sib xyaw ua ke
ib lub voj voog nyob rau hauv cov xwm txheej tsis tu ncua, muab los ntawm
Qhov twg Kn=Rated transformation ration
IP=Thawj qhov tam sim no, rms
iP=Thawj qhov tam sim no, instantaneous
yog=Secondary tam sim no, instantaneous
T=Sijhawm ntawm ib lub voj voog, hauv sec.
i. Chav kawm raug:
Cov chav kawm raug xa mus rau qhov tam sim no transformer nrog cov kev txwv ntawm qhov kev ua yuam kev thiab theem lub kaum sab xis.
j. Qhov tseem ceeb tshaj tam sim no:
Qhov piv ntawm qhov ntsuas luv luv tam sim no rau qhov ntsuas thawj tam sim no.
k. Rwb thaiv tsev theem (primary):
Cov txheej txheem rwb thaiv tsev ntawm CT yog hais txog cov txiaj ntsig ntawm kev tiv thaiv
- Fais fab zaus withstands voltage.
- Impulse withstand voltage.