Q: Vim li cas peb ntsuas kev tiv thaiv hluav taws xob ntawm lub tshuab hluav taws xob, thiab qhov txiaj ntsig txhais li cas?
A: Kev ntsuas hluav taws xob tiv thaiv hluav taws xob (IR) yog ib qho cuab yeej siv tshuaj ntsuam xyuas siv los ntsuas qhov zoo ntawm cov rwb thaiv tsev ntawm windings thiab nruab nrab ntawm windings thiab hauv av (core / tank).
Lub hom phiaj:
• Tshawb xyuas cov dej paug, cov av hauv av, lossis cov pa roj carbonized hauv cov rwb thaiv tsev.
• Ntsuas qhov ua tau zoo ntawm kev kho kom qhuav tom qab kho lossis hloov roj.
• Muab lub hauv paus rau cov xwm txheej rwb thaiv tsev zoo li niaj zaus.
Txhais lus:
• Ib qho kev nyeem IR ib zaug yog muab piv rau cov qauv tsim khoom lossis cov ntaub ntawv keeb kwm.
• Polarization Index (PI) - qhov piv ntawm 10-feeb mus rau 1-feeb IR nyeem - yog qhov qhia tau ntau dua:
|
PI Tus nqi |
Qhov xwm txheej |
Txhais lus |
|
Ntau dua lossis sib npaug rau 2.0 |
Zoo |
Qhuav, zoo rwb thaiv tsev |
|
1.0 – 2.0 |
Lus nug |
Tej zaum yuav qhia tau tias noo noo ingress |
|
< 1.0 |
pluag |
Rwb thaiv tsev tej zaum yuav cuam tshuam |
Ntsiab Lus:IR yog qhov chaw- kuaj xyuas, tsis yog qhov lees paub dhau los / ua tsis tiav. Ib txwm ua ke nrog lwm yam kev xeem (tanδ, DGA) rau kev ntsuas tag nrho. Kev kho qhov kub thiab txias kuj tseem ceeb: IR qhov tseem ceeb kwv yees li ib nrab rau txhua 10℃nce.