Ntau tshaj li ib puas xyoo dhau los, nrog kev qhia txog hluav taws xob rau hauv lub neej niaj hnub, tib neeg thaum kawg tau txais kev coj ua thev naus laus zis ntawm peb kev vam meej. Tam sim no peb nyob ib puag ncig los ntawm ntau yam khoom siv hluav taws xob thiab khoom siv nyob txhua qhov chaw. Yuav luag txhua lub tsev muaj cov xaim hluav taws xob, thiab yog tias lub tsev nyob hauv thaj chaw deb, ces tib neeg nrhiav txoj hauv kev tawm ntawm qhov xwm txheej: lawv nruab cua tshuab hluav taws xob, hnub ci vaj huam sib luag, thiab lwm yam. Tab sis tsis yog txhua tus neeg paub tias yuav luag txhua yam khoom siv hluav taws xob xav tau cov khoom xws li lub thawv davhlau ya nyob twg. Nws yog dab tsi thiab nws yog dab tsi? Hauv tsab xov xwm peb yuav sim teb cov lus nug no.
Lub thawv davhlau ya nyob twg yog lub thawv duab plaub lossis lub thawv puag ncig nrog lub davhlau ya nyob twg hauv. Feem ntau, qhov thaiv yog tsim los rau qhov siab tshaj plaws ntawm ntu ntawm cov hlau hloov pauv (35 hli) thiab rau cov xov tooj sib txuas ncaj qha - 7-12 pcs.
Terminal thawv nyob ntawm lub hom phiajtshwm sim:
- rau chav qhuav;
- rau cov khoom nrog ib puag ncig nruj (kev tsim tshuaj lom neeg);
- rau siv sab nraum zoov (kub thiab ya raws resistant).
Kev faib tawm ntawm lub thawv davhlau ya nyob twg
1. Raws li txoj kev teeb tsa, muaj:
- rau qhib kev teeb tsa;
- rau kev zais kev teeb tsa hauv pob zeb;
- rau kev zais zais hauv plaster, phab ntsa qhuav.
2. Nyob ntawm cov khoom siv:
- polypropylene, ABC, tus kheej tua PVC, thiab lwm yam.;
- los ntawm hlau.
3. Los ntawm kev tiv thaiv qib (plua plav, noo noo, thiab lwm yam):
- boxes IP20;
- IP44, IP54, IP65;
- explosion-proof.
4. Lawv muab faib los ntawm climatic version:
- rau siv sab nraud U1;
- rau qhov tso rau hauv qab lub canopy U2;
- rau thaj chaw U3.
5. Nyob ntawm daim ntawv ua tiav, muaj:
- rectangular;
- square;
- ncig.
6. Los ntawm kev muaj cov terminal blocks:
- nrog davhlau ya nyob twg;
- tsis muaj qhov thaiv thaiv.
Nws kuj yuav tsum tau hais txog lub thawv ntsuas. Lawv yog me ntsis loj dua li lub thawv davhlau ya nyob twg. Lawv tso cai rau koj tso cov khoom siv me me, hloov pauv, lub qhov (socket) ntxiv rau cov ntaub qhwv.
Lub thawv davhlau ya nyob twg tuaj yeem muaj cov qog nqaij hlav hauv nws lub tsev rau kev muab cov xaim thiab cables. Feem ntau cov qog yog hloov los ntawm cov kav hlau lossis yas. Cov qog tuaj yeem ua tau roj hmab nrog txiav cov voj voog los yog cov yas kom tso cai rau kev hloov ntawm lub qhov mounting. Kev siv cov ntsaws ruaj ruaj tuaj yeem txhim kho qhov nruj ntawm cov khoom. Lub thawv kaw nrog lub hau, uas txuas nrog rau rooj plaub nrog cov ntsia hlau lossis latches nrog gaskets.
Txhua lub thawv davhlau ya nyob twg, nyob ntawm lub hom phiaj, daim ntawv thov thiab kev ua haujlwm, muaj cov cim sib txawv. Qhov no tso cai rau cov neeg siv khoom sai sai xaiv cov khoom xav tau. Tom qab tag nrho, lub thawv davhlau ya nyob twg tuaj yeem siv tau ob qho tib si hauv qab dej thiab ntawm qhov siab (hais, tsib txhiab meters saum toj no hiav txwv theem), nws tuaj yeem sewn rau hauv phab ntsa, lossis nws tuaj yeem raug cuam tshuam los ntawm kev ua phem rau hauv kev lag luam tshuaj. Tag nrho cov ntaub ntawv no muaj nyob rau hauv cov khoom code. Piv txwv li, lub thawv tawg-pov thawj davhlau ya nyob twg yog cim 1ExeIIT5. Muaj ntau hom kev cim txawm tias ntawm cov thawv tawg-pov thawj. Lub cim encodes cov ntaub ntawv hais txog qib ntawm kev tiv thaiv tawg, thiab qhov chaw ntawm daim ntawv thov ntawm cov khoom, thiab ntau ntxiv.
