Cov kev txiav txim siab tseem ceeb thaum lub sijhawm ua haujlwm ntawm cov hloov pauv tam sim no (CTS)
Raws li cov cuab yeej tseem ceeb rau kev ntsuas tam sim no, kev tiv thaiv, thiab kev soj ntsuam hauv lub zog hluav taws xob, cov xwm txheej ua haujlwm ntawm cov kev nyab xeeb system tam sim no (ntsuas qhov ntsuas qhov tseeb.
1. Kev tswj kev pheej hmoo ntawm theem nrab-sab qhib Circuit Court
Cov teeb meem tseem ceeb:
Kev qhib Circuit Court ntawm ob sab sab nraud tuaj yeem ua rau poob qis hauv cov tseem ceeb sib nqus flux (li ntau txhiab tus nqi hluav taws xob), ua rau kom muaj kev phom sij siab.
Cov ntaub ntawv raug:
Hloov chaw ua tsis tau sai sai rau kev ua haujlwm qis dua ntawm CT, uas ua rau lub qhov hluav taws xob ntau dua 2 kv ntawm lub caij ntawm lub voj voog. Qhov kev sib tw no tau ua txhaum cov rwb thaiv tsev txheej ntawm cov cable theem nrab.
Tswj Ntsuas Ntsuas:
Kev ua ntej ua haujlwm:
Thaum kuaj xyuas lossis rov ua dua lub hauv paus theem nrab, siv thaj chaw uas muaj siab luv luv (nrog rau ntau qhov chaw sib luag ntawm ntau dua lossis sib npaug ntawm 4 mm²) rau kev ntseeg siab luv-taws.
Tom qab luv luv-taws tes, lees paub kev siv tus multimeter.
Khoom Xaiv:
Siv CTS nruab nrog anti-qhib corristors cov khoom siv (piv txwv li, built-in voltages kom tsawg dua los yog sib npaug rau 500 v nyob rau hauv qhov kev tshwm sim ntawm ib qho kev qhib Circuit Court.
Kev Saib Xyuas Online:
Install a secondary-circuit open-circuit monitoring device that triggers an alarm upon detecting sudden changes in secondary current (>10% ntawm tus nqi ntsuas).
2. Tshaj muaj peev xwm thiab ntsuas kub nce
Qhov taw qhia tseem ceeb:
Dynamic stability ntau yam:
Muaj peev xwm tiv taus 20 lub sijhawm qhov ntsuas uas muaj nyob rau 1 thib ob.
Thermal Stability Ntau Yam:
Muaj peev xwm tiv taus 10 lub sijhawm rated tam sim no rau 10 vib nas this.
Ntaub pheb cov ntaub ntawv tas:
Ib qho cua ua liaj ua teb muaj kev paub luv luv ntawm Circuit Court tam sim no 3 0}} lub sij hawm ct tus nqi. Tom qab 0.8 seconds, lub rwb thaiv tsev txheej txheej carbonized, ua rau muaj kev cuam tshuam nrog kev sib txuas lus luv luv.
Lub Tswv Yim Tswj Cov Tswv Yim:
Kev Ntsuas Cov Ntaub Ntawv:
Ntsuas cov CT theem nrab load impedance (Z₂, hauv ω) kom ntseeg tau tias nws tsis pub tshaj 80% ntawm cov nqi ntawm cov khoom siv nyiaj thib ob (zₙ).
Tus yam ntxwv:
Rau ib qho 5p {20- chav kawm ct nrog zₙ {2}}} ω, qhov tseeb z₂ yuav tsum tsawg dua los yog sib npaug rau 4 ω.
Tshav kub dissipation optimization:
Rau sab nraum zoov cts nrog cov qauv sib khi tag nrho, xyuas kom meej raws li qhov ntsuas IP67 thiab tswj hwm qhov cua aperture ntau dua los yog sib npaug rau 1:50.
Reserve lub tshav kub dissipation qhov chaw ntawm ntau dua los yog sib npaug {{0 m ywm}. 5 m nyob ib puag ncig sab hauv tsev kom tiv thaiv kev sib chwv hauv sab hauv tsev.
3. Rwb thaiv tsev kev ua haujlwm
Kev Laus Mechanisms:
Lub ntsiab rwb thaiv tsev Dampness:
Dielectric dissipation factor (Tann) tshaj 0. 8%.
Partial paug (PD):
PD levels >50C Pc tuaj yeem ua rau cov ntoo hluav taws xob.
Cov Qauv Nrhiav Tau:
Kev Tiv Thaiv Kev Tiv Thaiv:AC wall withstt voltage kuaj:
Thov siv 85% ntawm lub Hoobkas-rated voltage rau 1 feeb (piv txwv li, ib qho 35 kv ct yuav tsum tiv taus 76 kV).
Kev ntsuas kev tawm tsam ib nrab:
Xyuas kom meej pd qib yog tsawg dua lossis sib npaug rau 10 lub PC nyob rau hauv ib qho hluav taws xob ntawm 1.1um / √3.
Kev Saib Xyuas Online:
Nruab ib qho kev sib nrig sib haum
Use infrared thermal imaging to detect insulation defects, which manifest as hot spots with temperature differences >5 K.
