Qhov cuam tshuam ntawm kev nce siab tuaj yeem ua rau tsis ua haujlwm tam sim lossis kev puas tsuaj rau cov cuab yeej tsuas yog tshwm sim nyob rau lub sijhawm ntev. SPDs feem ntau yog ntsia rau hauv cov neeg siv khoom siv los tiv thaiv kev teeb tsa hluav taws xob tab sis ntau hom SPD muaj los tiv thaiv kev teeb tsa los ntawm lwm cov kev pabcuam tuaj, xws li xov tooj thiab cable TV. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias kev tiv thaiv kev teeb tsa hluav taws xob ib leeg thiab tsis yog lwm qhov kev pabcuam tuaj yeem tawm mus rau lwm txoj hauv kev rau cov hluav taws xob hloov pauv mus rau qhov kev teeb tsa.

Muaj peb yam sib txawv ntawm Surge Protective Devices:

• Hom 1 SPD ntsia ntawm lub hauv paus chiv keeb, xws li lub rooj sib tham loj.
• Hom 2 SPD tau nruab rau ntawm cov khoom siv sib faib
  • (Combined Hom 1 & 2 SPDs muaj thiab feem ntau yog ntsia hauv cov neeg siv khoom).
• Hom 3 SPD ntsia ze rau ntawm qhov chaw tiv thaiv. Lawv tsuas yog yuav tsum tau nruab ua ib qho ntxiv rau Hom 2 SPD.

Qhov twg ntau yam khoom siv yuav tsum tau tiv thaiv lub installation, lawv yuav tsum tau sib koom ua ke kom ntseeg tau tias kev ua haujlwm raug. Cov khoom muab los ntawm cov tuam txhab sib txawv yuav tsum tau lees paub rau kev sib raug zoo, cov neeg tsim khoom thiab cov chaw tsim khoom ntawm cov khoom siv tau zoo tshaj plaws los muab kev taw qhia txog qhov no.

Transient overvoltages yog dab tsi?

Transient overvoltages yog txhais raws li lub sij hawm luv luv surges ntawm hluav taws xob uas tshwm sim vim lub tam sim ntawd tso tawm ntawm lub zog yav tas los-kho los yog induced los ntawm lwm yam txhais tau tias. Transient overvoltages tuaj yeem tshwm sim los yog tsim los ntawm tib neeg.

Yuav ua li cas transient overvoltages tshwm sim?

Tib neeg tsim cov kev hloov pauv tshwm sim vim kev hloov ntawm cov motors thiab transformers, nrog rau qee hom teeb pom kev zoo. Keeb kwm qhov no tsis yog ib qho teeb meem hauv kev teeb tsa hauv tsev tab sis tsis ntev los no, kev teeb tsa tau hloov pauv nrog qhov tshwm sim ntawm cov thev naus laus zis tshiab xws li hluav taws xob tsheb them, huab cua / av qhov chaw cua sov thiab cov tshuab ntxhua khaub ncaws ceev tau ua rau muaj kev cuam tshuam ntau dua hauv kev teeb tsa hauv tsev.

Tej yam ntuj tso overvoltages tshwm sim vim tsis ncaj qha hluav taws xob ntaus feem ntau yuav tshwm sim vim yog ib tug ncaj qha hluav taws xob tawm tsam ntawm ib tug nyob ib sab overhead hwj chim los yog xov tooj kab ua rau lub transient overvoltage mus rau cov kab, uas yuav ua rau muaj kev puas tsuaj loj rau cov hluav taws xob installation thiab cov khoom txuam.

Kuv puas yuav tsum tau teeb tsa SPDs?

Daim ntawv tshaj tawm tam sim no ntawm IET Cov Kev Cai Txuas Hluav Taws Xob, BS 7671: 2018, hais tias tshwj tsis yog kev ntsuas kev pheej hmoo ua tiav, kev tiv thaiv kev tiv thaiv ib ntus overvoltage yuav tsum tau muab qhov uas qhov tshwm sim los ntawm overvoltage tuaj yeem:

• Ua rau muaj kev raug mob hnyav rau, lossis poob ntawm tib neeg lub neej; los yog
• Ua rau cuam tshuam cov kev pabcuam pej xeem thiab / lossis kev puas tsuaj rau cov cuab yeej cuab tam kab lis kev cai; los yog
• Ua rau cuam tshuam ntawm kev lag luam lossis kev lag luam; los yog
• Muaj feem cuam tshuam rau coob tus neeg nyob sib koom.

Txoj cai no siv tau rau txhua yam ntawm thaj chaw uas suav nrog hauv tsev, kev lag luam thiab kev lag luam.

Hauv tsab xov xwm dhau los ntawm IET Cov Kev Cai Txuas Hluav Taws Xob, BS 7671: 2008 + A3: 2015, muaj kev zam rau qee lub tsev nyob hauv tsev kom tsis suav nrog kev tiv thaiv kev tiv thaiv, piv txwv li, yog tias muab cov kab txuas hauv av, tab sis tam sim no tau raug tshem tawm thiab tam sim no yog qhov yuav tsum tau muaj rau txhua hom tsev nyob nrog rau ib leeg. Qhov no siv tau rau txhua qhov kev tsim kho tshiab thiab cov khoom siv rov ua dua tshiab.

Txawm hais tias IET Cov Kev Cai Txuas Hluav Taws Xob tsis rov qab los, qhov chaw ua haujlwm tau ua nyob rau hauv ib qho kev sib txuas uas twb muaj lawm nyob rau hauv ib qho kev teeb tsa uas tau tsim thiab ntsia rau ib tsab xov xwm dhau los ntawm IET Wiring Regulations, nws yog ib qho tsim nyog los xyuas kom meej qhov kev hloov kho Circuit Court ua raws li cov ntawv tshiab, qhov no tsuas yog yuav muaj txiaj ntsig yog tias SPDs raug teeb tsa los tiv thaiv tag nrho cov kev teeb tsa.

Qhov kev txiav txim siab seb puas yuav yuav SPDs yog nyob rau ntawm tus neeg siv khoom txhais tes, tab sis lawv yuav tsum tau muab cov ntaub ntawv txaus los txiav txim siab seb lawv puas xav tshem tawm SPDs. Kev txiav txim siab yuav tsum tau ua raws li qhov kev pheej hmoo ntawm kev nyab xeeb thiab ua raws li kev ntsuas tus nqi ntawm SPDs, uas yuav raug nqi tsawg li ob peb puas phaus, tiv thaiv tus nqi ntawm cov khoom siv hluav taws xob thiab cov khoom siv txuas nrog xws li khoos phis tawj, TVs thiab cov khoom tsim nyog, piv txwv li, kev kuaj pom cov pa taws thiab cov boiler tswj.

Kev tiv thaiv kev kub ntxhov tuaj yeem ntsia tau rau hauv cov neeg siv khoom uas twb muaj lawm yog tias qhov chaw tsim nyog muaj nyob hauv lub cev lossis, yog tias tsis muaj chaw txaus, nws tuaj yeem ntsia tau rau hauv ib qho chaw sab nraud uas nyob ib sab ntawm cov neeg siv khoom uas twb muaj lawm.

Nws tseem tsim nyog kuaj xyuas nrog koj lub tuam txhab pov hwm vim qee cov cai yuav hais tias cov cuab yeej yuav tsum tau them nrog SPD lossis lawv yuav tsis them nyiaj thaum muaj kev thov.