Vim li cas PVC-Insulated BV Wire yog lub hauv paus ntawm kev sib txuas lus nyab xeeb

Ntu 1: BV Wire Yog Dab Tsi? Kev Txhais Txheem

Kev tsim kho ib txwm muaj:

• Tus Neeg Txuas: Cov tooj liab khov kho lossis cov tooj liab uas tau muab khi ua ke (Chav Kawm 1 lossis Chav Kawm 2, raws li IEC 60228)

• Kev rwb thaiv tsev: PVC hom A, B, lossis C (nyob ntawm qhov ntsuas kub thiab daim ntawv thov)

Cov ntu sib txuas ua ke:0.5 mm² txog 10 mm² (feem ntau cuam tshuam rau Lub Rooj Sib Tham kev sib txuas hauv cov vaj huam sib luag tswj hwm thiab cov thawv sib txuas)

Qhov ntsuas hluav taws xob:450/750 V (feem ntau) lossis 300/500 V

Qhov ntsuas kub:Feem ntau -15 ° C txog +70 ° C rau tus qauv PVC (qib tshwj xeeb muaj: -40 ° C txog +105 ° C)

Tsis zoo li cov xov hlau uas yooj ywm (RVV, RV), cov xov hlau BV muaj ib qhoCov rwb thaiv tsev PVC tuab dua, tawv duathiab tus neeg hlau uas ruaj khov dua. Qhov no ua rau nws zoo tagnrho rau:

• Cov xov hlau ruaj khov hauv cov vaj huam sib luag hluav taws xob

• Kev txuas hluav taws xob ntawm cov thawv faib khoom, cov switchboards, thiab cov khoom siv hauv tsev uas ruaj khov

• Kev sib txuas rau cov thaiv qhov rooj thiab cov thaiv qhov rooj uas xav tau cov khoom siv khov kho lossis cov hlua khi

  Ntu 2: Vim Li Cas PVC - Thiab Vim Li Cas PVC Zoo Tseem Ceeb

  Kwv yees li 60% ntawm cov teeb meem cable uas ua rau muaj teeb meem rwb thaiv tsev yog vim muajCov txheej txheem PVC tsis zoo, tsis yog tooj liab. Nov yog yam uas cov neeg yuav khoom tshaj lij yuav tsum xyuas:

  2.1 Cov ntsiab lus ntawm plasticizer thiab kev hloov pauv
  Cov PVC tsis zoo muaj cov yas ntau dhau. Raws sijhawm, cov yas hloov mus rau hauv cov tsev thaiv qhov kawg (tshwj xeeb tshaj yog PA66 lossis PC), ua rau tawg lossis mos ntawm lub thaiv qhov kawg. Yueqing Gaopeng Electric tau sim cov xov hlau BV los ntawm 40+ tus neeg muag khoom - peb tuaj yeem qhia rau koj:kev tsiv teb tsaws chaw tsis pom kom txog thaum nws rhuav tshem ib lub vaj huam sib luag.

  2.2 Cov pa oxygen index (fire retardancy)
  PVC txheem muaj cov pa oxygen ntawm 26–30%. Cov hlau BV zoo yuav tsum dhau IEC 60332-1 qhov kev sim nplaim taws ntsug. Hauv peb tus kheej qhov kev sim hauv chaw kuaj mob, PVC tsis zoo txuas ntxiv hlawv tom qab nplaim taws raug tshem tawm - qhov kev pheej hmoo hluav taws ncaj qha.

  2.3 Kev tiv thaiv kev laus thermal
  Raws li IEC 60227, cov khoom rwb thaiv tsev PVC yuav tsum tiv taus kev laus 7 hnub ntawm 80 ° C (rau cov hlau ntsuas 70 ° C). Cov PVC tsis zoo yuav tawv thiab tawg hauv tsawg dua 3 hnub hauv tib qho xwm txheej, ua rau luv luv.

  2.4 Kev sim khoov txias
  Rau kev xa tawm mus rau Tebchaws Europe lossis North America, BV hlau yuav tsum dhau qhov -15 ° C txias khoov (lossis -25 ° C rau cov qib tshwj xeeb). PVC pheej yig dhau los ua brittle li iav hauv qab 0 ° C - tsis yooj yim sua kom nruab tau zoo hauv lub caij ntuj no lossis huab cua txias.

  Tshooj 3: Yuav Ua Li Cas BV Wire Sib Txuas Lus Nrog Cov Terminal Blocks - Engineering View

  Qhov no tseem ceeb heev rau txhua tus neeg yuav khoom uas yuav ob qho tib si cov xov hlau thiab cov terminals (txawm tias los ntawm cov neeg muag khoom sib txawv). Cov xov hlau BV tsis raug tuaj yeem ua rau lub davhlau ya nyob twg tsis ua haujlwm:

  3.1 Kev sib raug zoo ntawm chav kawm ntawm tus neeg coj ua

  • Feem ntau cov ntsia hlau-hom terminals (piv txwv li, peb Gaopeng T-Series) txais ob qho tib si khoom (Chav Kawm 1) thiab stranded (Chav Kawm 2) conductors.

  • Cov xov hlau hom caij nplooj ntoos hlav nyiam cov hlua khi lossis yooj ywm Class 5 - tab sis ntau cov xov hlau BV yog khov kho.

  • Piv txwv tsis sib xws:Siv cov khoom khov kho BV 4mm² hauv lub qhov txuas uas tsim los rau cov xov hlau zoo ua rau kev clamping thiab rub tawm tsis txhim khu kev qha.

  3.2 Qhov ntev thiab qhov tseeb ntawm kev txiav
  Cov tuab ntawm cov rwb thaiv tsev PVC txawv. Cov hlau BV txheem raws li GB/T 5023.3 muaj cov tuab ntawm cov rwb thaiv tsev uas tau teev tseg (piv txwv li, 0.8 hli rau 2.5mm²). Txawm li cas los xij, ntau cov hlau pheej yig muaj cov rwb thaiv tsev nyias dua lossis tsis sib npaug. Qhov tshwm sim: yog kev hla dhau (qhia ntau tooj liab, ua rau luv luv) lossis hla dhau (PVC ntes tau sab hauv lub davhlau ya nyob twg, ua rau muaj kev tiv thaiv siab).

  3.3 Tus neeg xyuas pib voj voog piv rau tus neeg xyuas pib zoo li tus neeg xyuas pib
  Cov xov hlau BV zoo muaj tus hlau uas ncig tiag tiag. Cov xov hlau BV tsis zoo siv cov tooj liab uas dov rov qab uas tsis sib npaug, uas tsis tuaj yeem zaum hauv lub terminal block's clamping yoke. Qhov no ua raukev sib cuages tsis txhob sib cuag nrog kab - qhov nce 300% ntawm kev tiv taus kev sib cuag.