Hauv 10kV zog daim phiaj, thaum ib ntu-theem av yuam kev tshwm sim, cov voltage ntawm qhov tsis txhaum theem yuav sawv mus rau kab voltage (10kv). Vim li cas tsis xaiv 10KV rau nruab nrab voltage cable cable u ₀, tab sis 8.7kV? Qhov no feem ntau yog raws cov kev ua hauv paus hauv qab no:
1. Cov lus txhais ntawmMV CableCov Ntsuas Hluav Taws Xob
Hauv cov qauv, cov ntsuas hluav taws xob ntawm cov xaim feem ntau yog qhia raws li u ₀ / u (um):
U ₀: Ib theem mus rau av rated voltage (Theem Voltage)
U: Ob theem ntsuas hluav taws xob (kab hluav taws xob)
Um: siab tshaj plaws ua hauj lwm voltage
Rau nruab nrab voltage cables ntawm 8.7 / 15kv:
U {=8. 7Kv (ib theem mus rau av ntsuas hluav taws xob)
U {=15 kv (rated voltage nruab nrab ntawm ob ntu)
Um =17. 5kv (Ntau Tshaj Plaws Hluav Taws Xob)
2.Yow yog qhov ntsuas theem voltage ntawm 8.7kV txiav txim?
Qhov ntsuas theem voltage u ₀ ntawm lub cable tsis yog xaiv tau ncaj qha rau cov kev sib xyaw ua ke ntawm cov kab ke ntawm cov kab ke thiab kev ua txhaum:
(1) raws li kev ua haujlwm ib txwm muaj ntawm cov kab ke
Nyob rau hauv kev ua haujlwm ib txwm muaj:
Cov theem voltage ntawm 10kv system u ₀ =10 kv / √ 3 ≈ 5.77kv.
Yog tusNruab Nrab Voltage CableSiv 8.7kv raws li U ₀, nws txhais tau tias lub rwb thaiv tsev tsim kev lag luam ntawm lub nruab nrab voltage cable yog ntau dua li cov kev ua haujlwm zoo tshaj li qub.
(2) Xav txog cov hluav taws xob nce nce thaum ib theem hauv av ua txhaum
Thaum ib qho av thaiv cov plua plav txhaum tshwm sim, cov theem hluav taws xob ntawm theem tsis muaj kev ua txhaum yuav sawv mus rau ntawm kab voltage qib (10kv).
Txawm li cas los xij, cov rwb thaiv tsev kev tsim qauv ntawm cov hluav taws xob nruab nrab voltage tsis yog raws li lub sij hawm luv luv, tab sis yuav tsum tau ua haujlwm ntev, thiab ntev ruaj khov.
U ₀ ntawm 8.7KV yog txaus kom ntseeg tau tias txoj haujlwm ntseeg tau ntawm cov hluav taws xob tsis zoo thaum lub sij hawm ua txhaum, thaum xaiv ob qho kev lag luam thiab kev ruaj ntseg liab.
(3) Raws li kev nyab xeeb ntawm kev nyab xeeb
Cov txheej txheem thoob ntiaj teb xws li iec 60502-2 thiab GB / T 12706.2 sab xis uas:
Cable hluav taws xob nruab nrab cable nrog lub ntsuas hluav taws xob ntawm 8.7 / 15kv, nrog u}}. 7Kv, tuaj yeem tiv ib qho hluav taws xob ntawm 8.7kv tau ntev.
Nyob rau hauv cov ntaub ntawv ntawm luv luv-ua txhaum (xws li ib leeg-theem av yuam kev siab dua 8.7 KV, tab sis tsis tas yuav ncaj qha teeb U ₀ rau 10 kV.
3.Vim li cas tsis xaiv qhov tseeb ntawm 10kv raws li U ₀?
Yog tias lub cable yog xaiv ncaj qha raws li u ₀ =10 kv, txawm hais tias nws yuav tsis haum rau hauv kev ua txhaum engineering, feem ntau yog vim li cas hauv qab no:
(1) cov pob rwb thaiv tsev yog txaus
Cov rwb thaiv tsev tuab thiab dielectric lub zog ntawm cable nrog cov hluav taws xob hluav taws xob ntawm 8-theem av yuam kev tsis cuam tshuam kev nyab xeeb.
Yog tias koj tau nce ntxiv rau 10kV, nws txhais tau tias lub rwb thaiv tsev txheej yuav tsum tau them nyiaj ntxiv, ua rau muaj kev nce qib, thiab cov npoo av siab tsis tas yuav tsum muaj kev ua lag luam tiag tiag.
(2) txiav txim siab nyiaj txiag
Thickening cov rwb thaiv tsev txheej tsis tsuas yog nce kev tsim cov nqi, tab sis kuj tseem yuav muaj teeb meem sab nraud thiab qhov nyuaj ntawm kev tsim kho cable thiab nce ntxiv cov nqi kev tsim kho thiab kev tsim kho.
Ntawm tam sim no, 8.7kV tsim yog txhim khu kev qha kom txaus thiab tsis tas yuav muaj nqi ntxiv.
(3) Cov Qauv Koom Tes Siv Hluav Taws Xob
Cov Txheej Txheem Thoob Ntiaj Teb (IEC, GB) yuav tsum tau txais 8.7 / 15KV raws li cov lus pom zoo cable rau 10kV pob cov phiaj xwm. Siv 10kv u ₀ cov xaim yuav ua rau tsis sib xws nrog cov qauv uas twb muaj lawm thiab cuam tshuam rau cov ntawv thov engineering.
Hauv cov ntsiab lus, xaiv cov xaim nrog 8,7 / 15kV cov kev qhia tshwj xeeb yog qhov kev xaiv zoo tshaj plaws uas tau txheeb xyuas los ntawm kev xyaum ntev.