1 Kev Taw Qhia
Insulating roj hmab, ib qho tseem ceeb ntawm cov khoom siv hluav taws xob engineering, feem ntau yog siv los tiv thaiv cov khoom siv hluav taws xob xws li cables, hloov cov txee, thiab cov hloov pauv. Cov qib sib txawv ntawm cov roj hmab insulating muaj qhov sib txawv voltage tsis kam, kub tsis kam, kev laus ua haujlwm, thiab lwm yam zoo, ua rau lawv tsim nyog rau ntau yam kev siv hluav taws xob. Kev nkag siab txog cov khoom siv ntawm ntau qib ntawm cov roj hmab insulating tuaj yeem pab rau kev cia siab thiab kev nyab xeeb ntawm cov khoom siv fais fab.
2. Kev faib tawm thiab kev ua haujlwm ntawm insulating roj hmab
2.1 Classification ntawminsulating roj hmab
Lub teb chaws tus qauv GB/T 12706.1-2008 categorizes insulating roj hmab rau hauv cov qib hauv qab no:
General-qib insulating roj hmab
High voltage qib insulating roj hmab.
Ultra-siab voltage insulating roj hmab.
2.2 Cov ntsuas kev ua haujlwm tseem ceeb ntawm cov roj hmab insulating
Volume resistivity
Dielectric zog
Thaum tshav kub kub Resistance
Kev laus tsis kam
Mechanical Strength
Cov kev ntsuas kev ua tau zoo no qhia meej qhov sib txawv ntawm cov qib sib txawv ntawm cov roj hmab insulating.
3. Daim ntawv thov scenarios ntawm general-qib insulating roj hmab
General-purpose insulating roj hmab yog qhov tsim nyog rau cov tshuab hluav taws xob tsawg xws li cov khoom siv hauv tsev thiab cov thawv xa khoom. Cov ntsuas kev ua haujlwm tseem ceeb yog raws li hauv qab no:
Volume resistivity yog ntau dua los yog sib npaug rau 10^13 Ω·cm.
Dielectric zog yog ntau dua los yog sib npaug rau 15kV / mm
Tensile zog: Ntau dua los yog sib npaug rau 10 MPa
Ua haujlwm kub ntau: -40 txog +90 degree .
Hom roj hmab no yog qhov tsim nyog pheej yig thiab zoo tagnrho rau cov khoom siv hluav taws xob tsawg, hluav taws xob tsawg.
4. Daim ntawv thov scenarios ntawm high-voltage qib insulating roj hmab
High-voltage qib insulating roj hmab yog tsim nyog rau nruab nrab thiab high-voltage fais fab nroj tsuag, xws li cov kab hluav taws xob kab hluav taws xob thiab hloov cov txee ntsuas 35kV lossis tsawg dua. Cov ntsuas kev ua haujlwm tseem ceeb yog raws li hauv qab no:
Volume resistivity yog ntau dua los yog sib npaug rau 10 ^ 14 Ω·cm.
Dielectric zog:> 20kV / mm.
Tensile zog: Ntau dua los yog sib npaug rau 12 MPa
Ua haujlwm kub ntau: -30 txog +105 degree .
Cov roj hmab no muaj cov rwb thaiv tsev zoo thiab kub ua haujlwm, ua rau nws zoo tagnrho rau kev tiv thaiv cov khoom siv hluav taws xob nruab nrab thiab high-voltage.
5. Daim ntawv thov scenarios ntawm ultra-high voltage insulating roj hmab
Ultra-siab voltage insulating roj hmab yog tsim nyog rau ultra-high voltage fais fab daim phiaj ntawm 500kV los yog siab dua, nrog rau transformers thiab cable terminals. Cov ntsuas kev ua haujlwm tseem ceeb yog raws li hauv qab no:
Volume resistivity yog ntau dua los yog sib npaug rau 10^15 Ω·cm.
Dielectric strength: >25 kV / hli.
Tensile zog: Ntau dua los yog sib npaug rau 14 MPa
Ua haujlwm kub ntau: -20 txog +115 degree .
Hom roj hmab no muaj cov rwb thaiv tsev siab, tiv thaiv tshav kub, thiab cov khoom siv dag zog, thiab tuaj yeem tiv taus qhov hnyav ntawm cov khoom siv hluav taws xob UHV.
6 Kev xaus
Cov qib sib txawv ntawm cov roj hmab insulating, txhua tus nrog nws tus kheej cov yam ntxwv ntawm kev ua tau zoo, yog qhov tsim nyog rau kev sib txawv ntawm cov qib hluav taws xob hauv cov tshuab hluav taws xob. General-qib insulating roj hmab yog qhov tsim nyog rau cov khoom siv hluav taws xob tsawg, tab sis high-voltage thiab ultra-high-voltage insulating roj hmab feem ntau siv nyob rau hauv nruab nrab-siab thiab ultra-siab voltage fais fab network. Daim ntawv thov tsom rau no pab txhim kho kev nyab xeeb thiab kev cia siab ntawm cov khoom siv hluav taws xob, thaum tseem lav qhov ruaj khov ntawm daim phiaj hluav taws xob.