Cov chav kawm rwb thaiv tsev ntawm lub tshuab hluav taws xob yog hais txog cov cua kub tsis kam ntawm cov khoom siv rwb thaiv tsev siv, muab faib ua cov chav kawm A, E, B, F, thiab H. Qhov kev tso cai kub nce yog hais txog qhov txwv uas lub cev muaj zog tuaj yeem nce siab piv rau qhov kub thiab txias. Txhua chav tsev rwb thaiv tsev sib raug rau qhov sib txawv qhov siab tshaj plaws uas tau tso cai, qhov ntsuas cua kub nce siab, thiab qhov ntsuas kub ntawm kev ua haujlwm. Piv txwv li, chav kawm A yog 105 degree, 60K, thiab 80 degree; chav kawm E yog 120 degree, 75K, thiab 95 degree; chav kawm B yog 130 degree, 80K, thiab 100 degree; chav kawm F yog 155 degree, 100K, thiab 120 degree; thiab chav H yog 180 degree, 125K, thiab 145 degree.
Cov kev ua tau zoo ntawm cov khoom siv hluav taws xob muaj xws li hluav taws xob, thermal, mechanical, thiab chemical zog. VPI (lub tshuab nqus tsev siab impregnation) thev naus laus zis tuaj yeem siv los tshem tawm cov dej noo los ntawm cov cua ntsawj ntshab, txhim kho cov khoom ntim ntawm cov kua roj vanish, thiab ua kom cov windings tsim ib qho kev sib koom ua ke. Environmentally friendly water-raws li insulating varnishes yog cov yam ntxwv ntawm lawv cov ntsuab thiab ib puag ncig tus phooj ywg xwm, zoo permeability, thiab tshav kub dissipation zog.
