Zero-Sequence Tam sim no tiv thaiv
1. Lub hauv paus ntsiab lus
Zero-kev tiv thaiv tam sim no yog raws li Kirchhoff txoj cai tam sim no: nyob rau hauv ib txwm peb-phase balanced system, vector sum ntawm peb -theem tam sim no yog xoom (ie, IU + IV + IW=0).
Thaum muaj teeb meem hauv av, qhov vector sum ntawm peb - theem tam sim no tsis yog xoom (piv txwv li, "zero-ib ntu tam sim no" I0 yog tsim), thiab tam sim no yuav raug cuam tshuam rau sab thib ob ntawm CT.
(2) Peb-theem CT synthesis txoj kev: xoom- ntu ntu tam sim no tau txais los ntawm kev sib txuas cov kab nruab nrab ntawm peb theem CTs nyob rau hauv ib txoj kev tshwj xeeb (xws li txuas nrog tam sim no).
2. Cov xwm txheej tseem ceeb ntawm daim ntawv thov
(1) Loj tam sim no grounding system (xws li qhov nruab nrab taw tes ncaj qha grounded system): Thaum ib qho - theem av txhaum tshwm sim, qhov txhaum tam sim no loj heev. Zero- kev tiv thaiv ib ntus, raws li lub ntsiab lus tseem ceeb lossis kev tiv thaiv thaub qab, yuav sai sai thiab tshem tawm qhov txhaum.
3. Kev Tiv Thaiv Cov Khoom thiab Lub Hom Phiaj
(1) Kev Tiv Thaiv Cov Khoom: Cov khoom siv hluav taws xob xws li cov tshuab hluav taws xob, cov khoom siv hluav taws xob, thiab cov kab sib kis.
(2) Lub Hom Phiaj: Txhawm rau tiv thaiv cov cuab yeej puas tsuaj (xws li arc hlawv ntawm cov tub ntxhais hlau), qhov system overvoltage, cuam tshuam ntawm qhov system stability, thiab theem - mus rau -theem luv - Circuit Court faults los ntawm grounding faults.
4. Cov yam ntxwv
(1) Nws tsom mus rau grounding faults ntawm sab system.
(2) Kev khiav hauj lwm tam sim no tus nqi feem ntau yog loj (los ntawm ob peb amperes mus rau ob peb puas amperes), uas muaj feem xyuam rau qhov system scale thiab grounding method.
(3) Nws yuav tsum muaj kev sib koom tes nrog cov txheej txheem hauv av thiab suav nrog kev teeb tsa nyuaj.
Residual Current Protection
1. Txoj Cai
Kev tiv thaiv tam sim no tseem yog raws li Kirchhoff txoj cai tam sim no, tab sis lub hom phiaj yog qhov txawv: qhov tam sim no ntws mus rau hauv ib lub node yuav tsum sib npaug rau qhov tam sim no ntws tawm ntawm cov node.
Thaum cov dej ntws los yog hluav taws xob poob, qee qhov tam sim no ntws rov qab rau hauv av, ua rau "inflow ≠ outflow." Qhov sib txawv no yog qhov seem tam sim no (feem ntau hu ua "leakage tam sim no"). Lub CT kuaj pom qhov sib txawv no thiab ua rau lub zog txav mus los.
2. Daim ntawv thov tseem ceeb
(1) Tsawg- qhov hluav taws xob hluav taws xob faib hluav taws xob cov khoom siv hluav taws xob: cov thawv xa khoom hauv cov chaw nyob, cov tsev ua haujlwm, thiab cov khw muag khoom.
(2) Cov khoom siv hluav taws xob ntawm cov cuab yeej siv hluav taws xob thiab cov khoom siv txawb.
(3) Muaj kev pheej hmoo siab - ib puag ncig xws li chaw ntub dej (piv txwv li, chav dej, chav ua noj) thiab kev tsim hluav taws xob ib ntus.
3. Cov yam ntxwv
(1) Nws tsom rau kev xau / hluav taws xob poob ntawm sab load. (2) Kev khiav hauj lwm tam sim no tsawg heev. High- qauv rhiab heev muaj 6mA, 10mA, thiab 30mA, siv rau kev tiv thaiv tus kheej; 100mA thiab 300mA yog siv los tiv thaiv hluav taws. (3) Ob theem thiab nruab nrab kab yuav tsum tau kuaj ib txhij.
xaus:
(1) Zero- kev tiv thaiv tam sim no yog "tus kws kho mob sab hauv" ntawm lub zog hluav taws xob, kuaj xyuas thiab kho "cov kab mob hnyav" (hauv av faults) nyob rau hauv lub cev (sib txuas hluav taws xob thiab khoom siv).
(2) Cov kev tiv thaiv tam sim no yog tus neeg siv "tus neeg saib xyuas," tsis tu ncua "kev puas tsuaj" (tshwj xeeb thiab hluav taws xob) los ntawm sab nraud (cov khoom siv hluav taws xob).
LVZW-35 tam sim no transformer
LVZW-35 tam sim no transformeryog ib qho sensor siv los ntsuas qhov tam sim no loj hauv 35kV system. Nws yog tsuas yog siv nyob rau hauv substations, hluav taws xob systems thiab hluav taws xob khoom. Lub transformer txais kev sib nqus core hom, uas yog tus cwj pwm los ntawm high linearity, muaj zog tiv thaiv - muaj peev xwm cuam tshuam, me me thiab cov qauv yooj yim. Nws yog tam sim no transformer nrog tus nqi siab heev.
1.Rated voltage: 40.5kV
2.Primary tam sim no: 50-1200A
3. Secondary tam sim no: 5/1
4.Measurement theem: 0.2/0.2S/0.5/0.5S
5.Kev tiv thaiv qib: 5P / 10P
6.Installation method: ntsug installation;
7.Ua tau ntau yam: siv nrog 35kV Circuit Court breakers thiab transformers.
8.Cov khoom zoo: Kev nyab xeeb thiab txhim khu kev qha, ntsuas qhov tseeb, qhov ntsuas dav dav, me me, lub teeb yuag, kev ua haujlwm zoo, kev siv hluav taws xob tsawg, cov cuab yeej siv tau yooj yim, yooj yim rau kev paub tsis siv neeg xyuas thiab tswj.
Shaanxi West Fais Fab Tongzhong Hluav Taws Xob Co., Ltd. yog cov chaw tsim khoom lag luam nrog ntau tshaj 20 xyoo ntawm kev paub, tshwj xeeb hauv kev ua haujlwm siab 7 txog 40.5kV lub tshuab nqus tsev vacuum breakers, switchgears, thiab ntau yam khoom siv hluav taws xob. Peb cov txheej txheem tsim khoom ua tau zoo ua kom ntseeg tau, cov kev daws teeb meem ruaj khov, tshwj xeeb tshaj yog peb cov VTZ series lub tshuab nqus tsev vacuum breakers, uas yog tu- pub dawb txog li 20 xyoo. Nrog ib pab pawg kws tshaj lij, peb ua tau zoo hauv R&D, kev tsim khoom, thiab tom qab- muag kev pabcuam rau cov khoom siv hluav taws xob siab thiab tsis tshua muaj hluav taws xob, xa cov khoom zoo ntawm txhua theem.
Shaanxi West Fais Fab Tongzhong Hluav Taws Xob Co., Ltd.Peb qhov chaw nyob
Tsis yog. 1 East Gaoxin Avenue nyob rau hauv siab -Tech Development Zone ntawm Baoji City, Shaanxi Province.
86-18091765882
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