Surge Protection Device SPD

AC Surge Protective Device T2 SLP40-275-3S + 1Surge Protection Device SPD tseem muaj npe hu ua surge arrester, Txhua tus tiv thaiv phais neeg rau lub hom phiaj tshwj xeeb yog qhov zoo ntawm cov khoom siv hloov nrawm, thiab tus tiv thaiv phais tau qhib lub pob hluav taws xob. Tom qab ua haujlwm, cov tshuaj tiv thaiv ntawm cov neeg tiv thaiv kev tiv thaiv yuav raug txiav tawm ntawm lub xeev siab, thiab cov ncej L yuav raug hloov mus ua lub xeev tsis kam tiv thaiv. Ua li no, lub zog hluav taws xob hauv zos tam sim no hauv lub cuab yeej hluav taws xob tuaj yeem ua cua. Lub sijhawm ua tiav tag nrho cov txheej txheem xob laim, tus tiv thaiv kab mob tiv thaiv yuav ua rau muaj hluav taws xob nyob sib luag. Qhov ntsuas hluav taws xob no ua kom paub tseeb tias tus tiv thaiv surge yeej ib txwm nyob thiab muaj peev xwm ua kom muaj kev cuam tshuam loj ntawm lub thoob tawm tam sim no rau lub ntiaj teb. Hauv lwm lo lus, cov neeg tiv thaiv hluav taws xob tiv thaiv cov khoom siv hluav taws xob tsis zoo los ntawm kev cuam tshuam ntawm cov xwm txheej xob laim, hloov kev ua si ntawm cov phiaj xwm pej xeem, lub zog hloov kho cov txheej txheem, thiab lwm lub zog tsim los ntawm kev ua si sab hauv thiab sab nraud.

Daim ntawv thov

Xob laim muaj qhov pom tseeb txaus ntshai rau tus kheej kev nyab xeeb thiab ua rau muaj kev hem thawj rau ntau yam khoom siv. Kev puas tsuaj ntawm lub hwj chim surges rau cov cuab yeej tsis txwv tsis pub ncaj qha AC Surge Protection Device T2 SLP40-275-1S + 1xob laim ntaus. Lub teeb hluav taws xob ze-thaiv ua rau muaj kev hem thawj loj heev rau cov khoom siv hluav taws xob niaj hnub; ntawm qhov tod tes, xob laim ua haujlwm nyob rau qhov kev ncua deb thiab kev tso tawm ntawm xob laim huab tuaj yeem tsim kom muaj zog inrush tam sim no nyob rau hauv lub zog hluav taws xob thiab lub teeb liab, kom cov khoom siv khiav dej num zoo li qub. Khiav thiab lub sijhawm ua haujlwm luv luv ntawm cov khoom siv. Lub xob laim xob laim tam sim no ntws mus thoob hauv lub ntiaj teb vim muaj qhov av tsis kam, uas ua rau lub zog siab. Lub siab hluav taws xob no tsis tsuas yog cuam tshuam rau cov khoom siv hluav taws xob tab sis kuj cuam tshuam rau tib neeg lub neej vim los ntawm cov kauj ruam voltage.

Cia li sawv, raws li lub npe pom tias yog ib qho kev hloov pauv siab uas tshaj qhov qub kev khiav hauj lwm voltage. Hauv qhov tseem ceeb, tus tiv thaiv phais neeg mob yog lub quab yuam kev txom nyem uas tau tshwm sim hauv ob peb lab ntawm ib pliag thiab tuaj yeem ua rau kev nrawm: cov khoom hnyav, lub voj voos luv luv, kev hloov hluav taws xob, lossis lub cav loj. Cov khoom lag luam muaj cov tub ceev xwm ntes tau tuaj yeem nqus cov hluav taws xob nrawm ntawm lub zog kom tiv thaiv cov cuab yeej txuas nrog los ntawm kev puas tsuaj.

Tus kws tiv thaiv mob tsaj lij, tseem hu ua xob laim ntes, yog ib qho khoom siv hluav taws xob uas muab kev tiv thaiv kev nyab xeeb rau ntau yam khoom siv hluav taws xob, twj paj nruag, thiab cov kab sib txuas lus. Thaum qhov hluav taws xob tam sim no lossis hluav taws xob tau tsim dheev hauv qhov hluav taws xob lossis kev sib txuas lus vim muaj kev cuam tshuam sab nraud, tus tiv thaiv kab mob tuaj yeem ua rau lub suab hluav taws xob nyob rau lub sijhawm luv luv, thiaj li zam dhau kev puas tsuaj rau lwm cov khoom siv hauv Circuit Court los ntawm kev thev naus laus zis.

Ntaus Ntaus

Cov tiv thaiv kab hluav taws xob muaj qhov dej ntws loj, muaj hluav taws xob tsawg tsawg thiab lub sijhawm teb tau nrawm;

Siv cov tshuab hluav taws xob tua hluav taws xob tshiab kawg kom tsis txhob muaj qhov tua hluav taws;

Kub tswj kev tiv thaiv Circuit Court nrog built-in thermal tiv thaiv;

Nrog lub zog qhia txog kev ua haujlwm qhia txog cov xwm txheej ua haujlwm ntawm tus tiv thaiv tsaj lij;

Cov qauv yog nruj thiab cov haujlwm ua haujlwm ruaj khov thiab txhim khu kev qha.

terminology

1, Cua-kaw cov kab ke

Cov neeg tiv thaiv hluav taws xob yog siv rau cov khoom siv hlau thiab cov qauv siv hlau uas ncaj qha txais lossis tiv thaiv cov xob laim, xws li xob laim, xob thaiv tiv thaiv cov kab (kab), xob tiv thaiv lub vauj hluav taws xob, thiab lwm yam.

2, Down neeg xyuas pib system

Tus tiv thaiv kab mob txuas cov hlau ntawm tus tsaj hluav taws xob ntawm lub teeb txais hluav taws xob mus rau qhov chaw nyob hauv av.

3, Lub ntiaj teb kev kaw haujlwm

Qhov tawm ntawm cov hluav taws xob hauv ntiaj teb thiab lub ntiaj teb neeg xyuas pib.

4, Hluav taws xob hauv ntiaj teb

Tus hlau laij hlau coj mus faus rau hauv av uas yog ncaj qha rau lub ntiaj teb. Kuj hu ua tus ncej grounding. Cov tswvcuab hlau ntau, cov chaw siv hlau, cov kav hlau, cov khoom siv hlau, thiab lwm yam uas txuas ncaj qha rau lub ntiaj teb kuj tuaj yeem ua lub ntiaj teb electrode, uas hu ua lub ntiaj teb electrode.

5, Lub ntiaj teb neeg xyuas pib

Txuas cov xov hlau sib txuas lossis kev coj ntawm lub tsaws hluav taws xob los ntawm cov kab hluav taws xob hauv av ntawm cov khoom siv hluav taws xob mus rau cov xov hlau sib txuas lossis cov kab hluav taws xob ntawm cov khoom siv hluav taws xob los ntawm cov khoom hlau uas yuav tsum muaj qhov sib luag ntawm cov kab ke, tag nrho cov davhlau ya nyob hauv av, lub rooj tsav xwm hauv pem teb, tag nrho cov hauv av bar, thiab kab ke sib npaug.

6, Lub teeb nyem ncaj qha

Xob laim ncaj qha ntaus rau ntawm cov khoom tiag tiag xws li cov tuam tsev, lub ntiaj teb lossis xob thaiv hluav taws xob.

7, Lub taub hau rov qab

Lub xob laim tam sim no dhau los ntawm qhov chaw taw tes lossis hauv av sau ntawv kom ua rau muaj kev hloov pauv ntawm thaj av ntawm thaj av. Kev tawm tsam hauv av tuaj yeem ua rau muaj kev hloov pauv ntawm tus txheej txheem hauv av, uas yuav tsim kev puas tsuaj rau cov cuab yeej hluav taws xob thiab khoom siv hluav taws xob.

8, Kev tiv thaiv xob laim (LPS)

Cov neeg tiv thaiv hluav taws xob txo kev puas tsuaj los ntawm xob laim rau cov tsev, kev teeb tsa, thiab lwm yam, suav nrog kev tiv thaiv sab nraud thiab sab hauv.

8.1 Cov hluav taws xob tiv thaiv sab nraud

Kev tiv thaiv xob laim tawm ntawm sab nrauv lossis lub cev ntawm tsev. Cov tiv thaiv kab mob feem ntau muaj lub teeb liab txais, ib tus neeg coj ntawm tes thiab hauv av tiv thaiv kom tsis txhob muaj hluav taws xob ncaj qha.

8.2 Lub teeb liab thaiv hluav taws xob tiv thaiv sab hauv

Lub hauv paus tiv thaiv hluav taws xob tiv thaiv sab hauv lub tsev (qauv), cov tiv thaiv kab hluav taws xob feem ntau muaj qhov sib luag ntawm cov kab ke, cov txheej txheem sib xws hauv av, thaiv cov txheej txheem, cov xov hlau tsim nyog, surge tiv thaiv, thiab lwm yam, feem ntau yog siv los txo thiab tiv thaiv xob laim tam sim no Cov hluav taws xob muaj txiaj ntsig tsim hauv qhov chaw tiv thaiv.

Analysis

Xob laim qeeg yog ib qho kev puas tsuaj loj tshaj plaws. Muaj ntau yam suav tsis txheeb thiab cov khoom ntiag tug poob los ntawm xob laim qeeg hauv txhua lub xyoo hauv ntiaj teb. Nrog coob tus ntawm cov ntawv thov siv hluav taws xob thiab microelectronic sib xyaw ua ke, kev puas tsuaj ntawm cov tshuab thiab khoom siv los ntawm xob laim overvoltage thiab xob laim electromagnetic pulses nce zuj zus. Yog li, nws yog qhov tseem ceeb tshaj plaws los daws cov teeb meem ntawm xob laim tiv thaiv teeb meem ntawm cov tuam tsev thiab cov ntaub ntawv hluav taws xob kom sai li sai tau.

Surge protector xob laim tawm tuaj yeem tshwm sim ntawm huab lossis huab, lossis nruab nrab ntawm huab thiab av; ntxiv rau kev tawm sab hauv los ntawm kev siv ntau cov khoom siv hluav taws xob loj, lub zog siv hluav taws xob (Tuam Tshoj lub zog hluav taws xob qis hluav taws xob cov qauv: AC 50Hz 220 / 380V) thiab qhov cuam tshuam ntawm cov khoom siv hluav taws xob thiab tiv thaiv xob laim thiab cia siab tau dhau los ua qhov tseem ceeb ntawm kev saib xyuas.

Xob laim tawm tsam ntawm huab thiab hauv av ntawm cov tiv thaiv surge muaj ib los yog ob peb cais sib laim sib txawv, txhua tus nqa tus xov tooj ntawm cov dej hluav taws xob siab heev nrog luv luv. Xob laim hluav taws xob feem ntau yuav suav nrog ob lossis peb lub xob laim ntaus, kwv yees li ib-thib nees nkaum ib ntawm ob ntawm kev tawm tsam xob laim. Feem ntau xob laim ntog feem ntau poob ntawm 10,000 thiab 100,000 amps, thiab lawv qhov ntev li ntawm tsawg dua 100 microseconds.

Kev siv cov khoom loj-qhov muaj peev xwm thiab cov khoom siv inverter hauv cov tiv thaiv hluav taws xob tiv thaiv hluav taws xob tau ua rau muaj qhov teeb meem loj zuj zus tuaj sab hauv. Peb suav tias nws yog qhov cuam tshuam ntawm kev hloov overvoltage (TVS). Cov chaw cia tau ntawm cov hluav taws xob fais fab voltage tam sim no rau ib qho kev siv fais fab. Qee lub sij hawm txawm tias qhov kev nqaim siab tshaj qhov poob siab yuav ua rau lub hwj chim lossis ua puas rau cov khoom. Qhov no yog qhov teeb meem nrog kev hloov pauv overvoltage (TVS) kev puas tsuaj. Tshwj xeeb rau qee qhov khoom siv hluav taws xob me me, qee zaum kev phais me me tuaj yeem ua rau tuag taus.

Nrog rau qhov yuav tsum tau nruj rau kev tiv thaiv xob laim ntawm cov khoom siv ntsig txog, kev teeb tsa ntawm Surge Protection Device (SPD) los tiv thaiv surges thiab kev hloov pauv ntawm cov kab thiab hla ntawm cov kab ntshav tau dhau los ua ib qho tseem ceeb ntawm cov cuab yeej tiv thaiv xob laim tshiab. ib tug.

1, cov yam ntxwv xob laim

Kev tiv thaiv xob laim muaj xws li tiv thaiv xob laim sab nraud thiab tiv thaiv hluav taws xob sab hauv. Kev tiv thaiv xob laim sab nraud tsuas yog siv rau cov kab hluav taws xob (xob kab, xob laim thaiv kev tiv thaiv, xob tiv thaiv xob laim, xob tiv thaiv kab hluav taws xob), cov kab hluav taws xob tiv thaiv, thiab cov khoom sib txuas. Lub luag haujlwm tseem ceeb ntawm tus neeg tiv thaiv surge yog kom ntseeg tau tias lub cev lub cev tiv thaiv los ntawm kev tawm tsam hluav taws xob ncaj qha. Xob laim hluav taws xob uas raug ntaus lub tsev raug rhuav tshem mus rau hauv lub ntiaj teb los ntawm cov kab hluav taws xob (txoj siv, nets, xov hlau), hauv qab cov kav theej, thiab lwm yam. induction. Cov txheej txheem yog ua raws li kev sib koom ua ke, suav nrog kev sib txuas ncaj qha thiab kev sib txuas ncaj qha los ntawm SPD, kom cov hlau lub cev, cov khoom siv kab thiab lub ntiaj teb tsim lub cev tsim kom muaj lub cev, thiab cov chaw sab hauv yog shunted thiab ntxias los ntawm xob laim thiab lwm yam surges. Lub xob laim hluav taws xob tam sim no los sis nag ntws tam sim no tau tawm mus rau hauv lub ntiaj teb kom tiv thaiv kev nyab xeeb ntawm tib neeg thiab khoom siv hauv tsev.

Xob laim teeb pom kev los ntawm kev ceev ceev voltage nce (tsis pub dhau 10μs), siab siab voltage (kaum tawm txhiab mus txog lab ntawm volts), qhov tam sim no loj (kaum rau ntau pua txhiab amps), thiab lub sijhawm luv luv (kaum txog rau pua pua microseconds)), qhov kis tau tus mob nrawm nrawm (hloov ntawm lub ceev ntawm lub teeb), lub zog yog loj heev, thiab nws yog qhov kev puas tsuaj tshaj plaws ntawm cov kev hloov hluav taws xob.

2, kev cais tawm ntawm cov thaiv kom zoo

SPD yog qhov cuab yeej tseem ceeb rau lub teeb liab tiv thaiv ntawm cov khoom siv hluav taws xob. Nws lub luag haujlwm yog txwv cov kev sib tsoo hluav taws xob tam sim ntawm lub hwj chim kab thiab teeb liab kis kab mus rau qhov hluav taws xob ntau uas cov khoom siv lossis lub kaw lus tuaj yeem tiv thaiv, lossis kom muaj lub zog hluav taws xob zoo tam sim no rau hauv av. Tiv thaiv cov khoom tiv thaiv lossis tshuab los ntawm kev poob siab.

2,1 Kev faib ua pawg los ntawm kev ua haujlwm tus qauv

Qeb raws li lawv txoj haujlwm ua haujlwm, SPD tuaj yeem faib ua hom hloov mus rau hluav taws xob, hom voltage thiab hom sib xyaw.

(1) Voltage hloov hom SPD. Thaum tsis muaj qhov hloov ntawm overvoltage, nws ua kom pom qhov siab loj. Thaum nws teb rau xob laim hloov hluav taws xob overvoltage, nws txoj kev hloov pauv hloov mus rau qhov tsis tshua muaj qhov cuam tshuam, tso cai rau lub teeb liab tam sim no dhau ntawm, tseem hu ua "luv luv Circuit Court hloov hom SPD".

(2) Lub siab lim hiam SPD. Thaum tsis muaj qhov hloov pauv overvoltage, nws yog impedance siab, tab sis raws li qhov muaj zog tam sim no thiab qhov hluav taws xob nce, nws qhov cuam tshuam yuav txuas ntxiv zuj zus, thiab nws qhov cuam tshuam tam sim no thiab qhov hluav taws xob muaj qhov tsis zoo, qee zaum hu ua "clamped type SPD".

(3) Ua ke SPD. Nws yog kev sib xyaw ntawm kev hloov hluav taws xob hloov hom thiab qhov kev txwv voltage ib yam, uas tuaj yeem ua qhov hloov hluav taws xob lossis hom kev txwv voltage lossis ob qho tib si, nyob ntawm cov yam ntxwv ntawm qhov siv hluav taws xob.

2.2 Kev faib hom phiaj los ntawm hom phiaj

Raws li lawv siv, SPD tuaj yeem muab faib ua fais fab xov tooj SPD thiab teeb liab kab SPD.

2.2.1 Fais Fab Xov SPD

Txij li thaum lub zog ntawm xob laim tawm tsam loj heev, nws yog ib qho tsim nyog yuav tsum maj mam tso tawm ntawm lub teeb hluav taws xob tawm tsam lub zog rau lub ntiaj teb los ntawm txoj kev muaj kuab paug tawm. Nruab tus tiv thaiv saib xyuas hluav taws xob lossis cov xaim hluav taws xob tiv thaiv kev tiv thaiv uas dhau qhov kev xeem ua Class Class I ntawm qhov kev sib txuas ntawm qhov ncaj qha tiv thaiv xob laim (LPZ0A) lossis qhov ncaj qha tiv thaiv xob laim (LPZ0B) thiab thawj qhov chaw tiv thaiv (LPZ1). Kev tiv thaiv ib qho tseem ceeb, uas tso tawm hluav taws xob ncaj qha tam sim no, lossis tshem tawm cov nqi hluav taws xob ntau thaum lub zog hluav taws xob kis tau raug rau lub teeb hluav taws xob ncaj qha. Kev tiv thaiv kab hluav taws xob tiv thaiv kab mob tiv thaiv tso rau ntawm qhov chaw txuas ntawm txhua cheeb tsam (suav nrog LPZ1 cheeb tsam) nyob tom qab thaj chaw tiv thaiv thawj ua lub sijhawm thib ob, theem peb lossis siab dua ntawm kev tiv thaiv. Qhov tiv thaiv qib thib ob yog cov khoom siv tiv thaiv rau cov seem hluav taws xob ntawm cov khoom siv tiv thaiv ua ntej thiab kev tawm tsam xob laim ntawm cheeb tsam. Thaum lub zog ntawm lub zog hluav taws xob nqus ntawm lub hauv ntej-theem yog loj, qee qhov chaw kuj tseem loj heev rau cov khoom siv lossis cov tiv thaiv theem peb. Lub zog uas tau kis yuav xav tau ntxiv nqus los ntawm tus pab cuam theem ob. Nyob rau tib lub sijhawm, kis kab ntawm thawj theem raug ntes lub teeb hluav taws xob tseem yuav ntxias lub teeb hluav taws xob hluav taws xob hluav taws xob tiv thaiv hluav taws xob. Thaum txoj kab ntev ntev, lub zog ntawm kev tsim hluav taws xob tau dhau los ua qhov loj txaus, thiab qib kev tiv thaiv qib thib ob ntxiv txhawm rau txhawm rau los ntshav lub zog. Qhov theem peb tus tiv thaiv kev tiv thaiv cov hluav taws xob seem ntawm lub zog tiv thaiv theem ob. Raws li qhov ntsuas voltage theem ntawm cov cuab yeej tiv thaiv, yog tias kev tiv thaiv ob theem hluav taws xob tiv thaiv hluav taws xob tuaj yeem ua tiav qhov ntsuas hluav taws xob tsawg dua qhov theem voltage ntawm cov khoom siv, tsuas yog ob theem kev tiv thaiv uas xav tau; yog tias cov cuab yeej tiv thaiv qhov ntsuas hluav taws xob tsawg, nws yuav xav tau plaub theem lossis ntau dua ntawm kev tiv thaiv.

Xaiv SPD, koj yuav tsum nkag siab qee yam tsis xws luag thiab lawv ua haujlwm li cas.

(1) 10 / 350μs nthwv dej yog qhov qauv yoj uas sim sim lub teeb ncaj qha los ntawm lub teeb hluav taws xob, thiab lub zog yoj lub zog loj; 8 / 20μ yoj nthwv dej yog cov qauv sib txuas uas simulates xob laim induction thiab xob laim conduction.

(2) nominal tawm tam sim no Hauv hais txog lub siab tam sim no ntws los ntawm SPD thiab 8/20 μs yoj tam sim no.

(3) Qhov siab tshaj tawm tam sim no Imax, tseem hu ua tus nqi siab tshaj plaws, hais txog qhov siab tshaj tawm tam sim no uas tuaj yeem tiv thaiv los ntawm SPD nrog nthwv dej tam sim no ntawm 8 / 20μs.

(4) Qhov siab tshaj plaws tas mus li voltage Uc (rms) hais txog qhov siab tshaj plaws AC voltage rms lossis DC voltage uas txuas ntxiv mus rau SPD.

(5) Cov seem hluav taws xob Ur yog hais txog tus nqi siab nyob ntawm cov rated paug tawm tam sim no Hauv.

(6) Qhov kev tiv thaiv voltage Up cim cov hluav taws xob voltage yam ntxwv ntawm SPD txwv cov davhlau ya nyob twg, thiab nws tus nqi tuaj yeem xaiv los ntawm cov npe nyiam, uas yuav tsum siab tshaj tus nqi siab tshaj qhov txwv voltage.

(7) Qhov hloov hluav taws xob hluav taws xob hom SPD feem ntau tso tawm 10 / 350μ lub nthwv dej tam sim no, thiab qhov hluav taws xob qhov txwv tsis pub tshaj SPD feem ntau cuam tshuam txog 8 / 20μs tam sim no nthwv dej.

2.2.2 Cov Lus Cim SPD

Lub teeb liab kab hluav taws xob SPD yog qhov tseeb lub teeb liab xob ntes tau tsim nyob rau hauv lub teeb liab kis kab, feem ntau nyob ntawm pem hauv ntej kawg ntawm lub cuab yeej, los tiv thaiv cov cuab yeej txuas ntxiv thiab tiv thaiv xob laim ntawm cuam tshuam los ntawm cov cuab yeej puas los ntawm lub teeb liab kab.

1) Kev xaiv ntawm kev tiv thaiv voltage theem (Up)

Tus nqi Up yuav tsum tsis tshaj qhov ntsuas qhov ntsuas qhov ntsuas ntawm cov khoom siv tiv thaiv. Txog kev xav tau hais tias SPD kom raug zoo rau kev rwb thaiv tsev ntawm cov khoom siv tiv thaiv.

Hauv kev siv hluav taws xob tsawg thiab kev faib khoom, cov khoom siv yuav tsum muaj qee qhov muaj peev xwm tiv taus kev poob siab, uas yog, muaj peev xwm tiv taus kev poob siab thiab overvoltage. Thaum qhov cuam tshuam overvoltage nqi ntawm ntau yam khoom siv ntawm 220 / 380V peb-theem tsis tuaj yeem tau txais, nws tuaj yeem xaiv raws li cov ntsuas qhov ntsuas ntawm IEC 60664-1.

2) Kev xaiv ntawm cov nominal tawm tam sim no Hauv (feem cuam tshuam)

Lub siab tam sim no ntws los ntawm SPD, 8/20 μ yoj tam sim no. Nws yog siv rau Kev Tshawb Fawb Qeb Kawm II ntawm SPD thiab tseem siv rau kev ntsuas ua ntej ntawm SPD rau Qeb I thiab Kev Kawm Class II.

Qhov tseeb, Hauv yog qhov siab tshaj tus nqi ntawm cov txiaj ntsig tam sim no uas tuaj yeem dhau tus naj npawb ntawm cov sij hawm (feem ntau 20 zaug) thiab cov nthwv dej (8/20 )s) yam tsis muaj kev puas tsuaj rau SPD ntau.

3) Kev xaiv cov siab tshaj tawm tam sim no Imax (txwv tsis pub lub zog txaus)

Lub siab dej ntws tam sim no dhau los ntawm SPD, 8/20 μ cov dej nthwv dej tam sim no, siv rau Kev Xeem Class II. Imax muaj ntau qhov zoo sib xws nrog Hauv, uas siv lub siab tam sim no ntawm 8/20 waves tam sim no nthwv dej kom ua tau cov Class II kev faib tawm ntawm SPD. Qhov txawv kuj pom tseeb. Imax tsuas yog ua qhov kev sim ntawm SPD, thiab SPD tsis ua rau muaj kev puas tsuaj ntau tom qab sim, thiab Hauv tuaj yeem ua 20 qhov kev ntsuas, thiab SPD tsis tuaj yeem rhuav tshem tom qab sim. Yog li no, Imax yog qhov txwv tam sim no ntawm qhov cuam tshuam, yog li qhov siab tshaj tawm tam sim no kuj tseem hu ua qhov kawg impulse flow peev. Qhov Tseeb, Imax> Hauv.

txoj haujlwm ua haujlwm

Surge Protection Device yog qhov cuab yeej tseem ceeb rau lub teeb ci tiv thaiv ntawm cov khoom siv hluav taws xob. Nws tau siv los hu ua "tus neeg raug ntes" lossis "tus tiv thaiv tshaj lij". English yog abbreviated li SPD. Lub luag haujlwm ntawm tus tiv thaiv tsaj hluav taws xob yog mus rau Qhov hloov pauv overvoltage rau hauv lub hwj chim kab thiab lub teeb liab kis kab mob tsuas yog siv rau qhov ntsuas hluav taws xob ntau uas cov cuab yeej lossis lub zog tuaj yeem tiv thaiv, lossis cov hluav taws xob muaj zog tam sim no tau tso rau hauv av kom tiv thaiv cov khoom tiv thaiv lossis system los ntawm kev cuam tshuam thiab kev puas tsuaj.

Hom thiab cov qauv ntawm cov tiv thaiv surge tuaj sib txawv ntawm ib daim ntawv thov rau, tab sis nws yuav tsum muaj tsawg kawg yog ib qho tsis muaj kab uas txwv tsis pub muaj kev sib xyaw. Cov khoom siv yooj yim uas siv hauv kev tiv thaiv hluav taws xob yog tshem tawm qhov sib txawv, cov roj tawm ntawm lub raj xa hluav taws xob, varistor, hluav taws xob diode thiab lub zawm caj pas.

Cov khoom siv theem pib

1. Kev faib tawm qhov sib txawv (tseem hu ua qhov sib txawv tiv thaiv):

Nws feem ntau muaj ob txoj hlua hlau sib cais los ntawm qee yam sib txawv uas tau ua rau huab cua, ib qho txuas nrog lub hwj huam sib txuas theem kab L lossis kab nruab nrab (N) ntawm cov khoom tiv thaiv xav tau, thiab lwm cov hlau hlau thiab cov kab hauv av (PE) txuas nrog. Thaum lub sij hawm hloov pauv overvoltage, qhov sib txawv yog tawg, thiab ib feem ntawm lub txim overvoltage tau nkag mus rau hauv lub ntiaj teb, uas zam cov voltage nce ntawm cov khoom tiv thaiv. Qhov kev ncua deb ntawm ob lub pas hlau hlau ntawm qhov tsis sib txawv txav tuaj yeem hloov kho raws li qhov xav tau, thiab tus qauv kuj yooj yim, thiab qhov tsis zoo yog qhov arc extinguishing kev ua haujlwm tsis zoo. Cov kev hloov kho qhov tsis sib haum yog qhov sib txawv ntawm angular, thiab nws cov arc-extinguishing muaj nuj nqi zoo dua li qhov qub. Nws tshwm sim los ntawm qhov kev ua ntawm lub zog hluav taws xob F ntawm lub Circuit Court thiab qhov nce ntawm cov cua kub ntws kom tua cov arc.

2. Cov roj tawm paug raj:

Nws muaj ob khub ntawm cov paib tsis zoo uas tau sib cais sib cais thiab tau ntim rau hauv lub khob raj lossis cov raj roj iav uas muaj cov roj inert (Ar). Txhawm rau txhawm rau txhim kho qhov teeb meem tshwm sim ntawm lub raj xa hluav taws xob, ib tus sawv cev tawm sab nraud kuj tseem muab rau hauv lub raj xa hluav taws xob. Hom pa roj tawm ntawm lub raj tso tawm dej muaj ob-ncej thiab hom peb-ncej.

Cov txheej txheem thev naus laus zis ntawm lub raj xa hluav taws xob tso tawm hluav taws xob yog: DC paug voltage Udc; poob siab voltage hluav taws xob Up (Feem ntau, Up≈ (2 ~ 3) Udc; lub zog ua haujlwm tam sim no Hauv; impulse tiv taus Ip tam sim no; rwb thaiv tsev tsis kam R (> 109Ω); kev sib tshuam hauv nruab siab (1-5PF)

Lub raj xa hluav taws xob roj tuaj yeem siv raws li DC thiab AC. Cov xaiv DC paug voltage Udc yog raws li hauv qab no: Siv raws li DC cov kab mob: Udc≥1.8U0 (U0 yog DC voltage rau cov kab ua haujlwm nquag)

Siv raws li AC tej yam kev mob: U dc ≥ 1.44Un (Un yog tus nqi rms ntawm AC voltage rau kev ua haujlwm zoo ntawm cov kab)

3. Varistor:

Nws yog cov hlau oxide semiconductor varistor nrog ZnO ua nws cov khoom tseem ceeb. Thaum qhov voltage thov rau ob qho kawg tau nce mus txog qee tus nqi, qhov tsis kam yog qhov rhiab heev rau voltage. Nws txoj hauv kev ua haujlwm yog sib npaug nrog cov koob thiab cov kab sib txuas txuas ntawm ntau lub semiconductor PN. Cov ntsuas hluav taws xob muaj cov yam ntxwv zoo (non = linear) (I = CUline, α yog nonlinear coefficient), cov peev txheej ntws loj (~ 2KA / cm2), qis qis rau cov dej tsis ua hauj lwm tam sim no (10-7 ~ 10-6A), tsis tshua muaj hluav taws xob seem (nyob ntawm ntawm Nyob rau hauv varistor kev khiav hauj lwm voltage thiab txaus muaj peev xwm), lub sij hawm teb rau lub sij hawm hloov overvoltage tau nrawm (~ 10-8s), tsis muaj kev ywj pheej.

Cov txheej txheem ntsuas ntawm cov varistor yog varistor voltage (piv txwv li hloov voltage) UN, siv voltage Ulma; voltage seem Ures; qhov seem hluav taws xob piv K (K = Ures / UN); lub peev xwm ntau ntws Imax; to dej ntws tam sim no; teb lub sijhawm.

Tus ntsuas hluav taws xob tau siv raws li cov xwm txheej nram qab no: varistor voltage: UN ≥ [(√ 2 × 1.2) / 0.7] U0 (U0 yog qhov ntsuas cov roj hluav taws xob ntawm lub zog siv hluav taws xob)

Siv hluav taws xob tsawg kawg nkaus: Ulma ≥ (1.8 ~ 2) Uac (siv raws DC cov xwm txheej)

Ulma ≥ (2.2 ~ 2.5) Uac (siv nyob rau hauv AC tej yam kev mob, Uac yog AC khiav hauj lwm voltage)

Qhov siab siv hluav taws xob ntau ntawm cov varistor yuav tsum tau txiav txim siab los ntawm lub ntsuas hluav taws xob ntawm lub thaiv hluav taws xob tiv thaiv. Qhov seem hluav taws xob ntawm tus varistor yuav tsum qis dua qhov theem voltage ntawm lub tshuab hluav taws xob tiv thaiv, piv txwv li (Ulma) max≤Ub / K. Qhov twg K yog qhov seem ntawm hluav taws xob thiab Ub yog qhov kev puas tsuaj voltage ntawm lub twj tiv thaiv.

4. Kev Tawm Suab:

Qhov hluav taws xob diode muaj qhov clamp-txwv muaj nuj nqi. Nws ua haujlwm hauv thaj tsam thim rov qab. Vim nws tsawg clamping voltage thiab cov lus teb ceev ceev, nws yog qhov tshwj xeeb tshaj yog tsim rau siv raws li kev tiv thaiv kev tiv thaiv kawg nyob hauv kev tiv thaiv ntau qib kev tiv thaiv. Cov yam ntxwv volt-ampere ntawm cov hluav taws xob diode hluav taws xob hauv thaj av tawg tuaj yeem hais tawm los ntawm cov qauv hauv qab no: I = CUα, qhov twg a yog qhov sib npaug tsis sib haum, rau lub Zener diode α = 7 ～ 9, hauv avalanche diode α = 5 ～ 7. Peb muaj XNUMX.

Raug diode kev tsis raug

(1) Qhov hluav taws xob tawg, uas yog hais txog qhov hluav taws xob tawg thaum lub teeb tsa hluav taws xob tawg tam sim no (feem ntau 1ma), uas feem ntau tsis pub dhau ntawm 2.9V rau 4.7V rau Zener diodes, thiab cov cuab yeej ntsuas ntawm avalanche diodes. Kev coj ntawm cov voltage feem ntau nyob hauv qhov ntau ntawm 5.6V txog 200V.

(2) Qhov siab tshaj plaws clamp voltage: Nws hais txog qhov hluav taws xob ntau tshaj plaws tshwm sim ntawm ob qho kawg ntawm ib lub raj thaum nws hla ntawm qhov tam sim no loj ntawm cov qauv siv hluav taws xob.

(3) lub zog mem tes: Nws yog hais txog qhov khoom ntawm qhov siab tshaj plaws clamp voltage ntawm ob qhov kawg ntawm lub raj thiab qhov tam sim no sib luag rau hauv raj raws li cov kev cai yob tawm tam sim no (piv txwv li, 10/1000 )s).

(4) Rov qab hluav taws xob hloov hluav taws xob: Nws yog hais txog qhov siab tshaj qhov hluav taws xob uas siv tau rau ob tog ntawm qhov raj hauv qhov rov qab xau, uas lub raj yuav tsum tsis txhob tawg. Qhov hloov tawm hluav taws xob no yuav tsum muaj qhov siab tshaj qhov ua haujlwm siab tshaj qhov hluav taws xob tiv thaiv hluav taws xob tiv thaiv hluav taws xob, piv txwv li, nws tsis tuaj yeem ua lub xeev tsis muaj zog thaum lub sijhawm ua haujlwm ntawm lub system.

(5) Qhov siab tshaj plaws tam sim no: nws yog hais txog qhov siab tshaj plaws tam sim no ntws los ntawm lub raj xa hauv qhov hloov hluav taws xob rov qab.

(6) Lub sijhawm teb: 10-11s

5. Txheeb chev:

Txoj phuam caj pas yog ib hom kev cuam tshuam los cuam tshuam cov khoom siv nrog ferrite uas yog tus tub ntxhais. Nws yog symmetrically mob rau tib ferrite toroidal tub ntxhais los ntawm ob coils ntawm tib qho loj thiab tib tus naj npawb ntawm lem. Txhawm rau ua plaub lub davhlau ya nyob twg, nws yog qhov tsim nyog los ntsuas qhov loj ntawm qhov teeb meem ntawm hom teeb liab, thiab nws tsis muaj kev cuam tshuam loj ntawm qhov ua kom tsis muaj qhov tsis xws ntawm cov teeb liab hom. Lub zawm caj pas tuaj yeem tiv thaiv zoo tshaj qhov cuam tshuam cuam tshuam hom teeb liab (xws li xob laim cuam tshuam) nyob rau hauv cov kab sib luag tab sis tsis muaj kev cuam tshuam rau cov teeb liab txawv ntawm cov teeb liab uas cov kab ib txwm sib kis.

Lub zawm caj pas yuav tsum ua tau raws li cov nram qab no thaum tsim tawm:

1) Cov xaim xaim xaim ntawm lub coil core yuav tsum tau rwb thaiv tsev los ntawm txhua tus kom paub tseeb tias tsis muaj kev sib tsoo luv luv ntawm kev sib hloov ntawm lub kauj nyob hauv kev hloov pauv overvoltage.

2) Thaum lub kauj puas ntws los ntawm qhov nrawm nrawm tam sim no, tus tub ntxhais tsis zoo li tsis txhuam.

3) Lub hauv paus ntawm cov kauj yuav tsum tau rwb thaiv tsev ntawm lub tsho tiv thaiv kom tsis txhob muaj kev sib cais ntawm ob qho ntawm kev hloov chaw hla overvoltage.

4) lub kauj yuav tsum tau ua kom mob ntau li ntau tau, uas tuaj yeem txo qhov txha caj qaum ntawm lub kauj thiab txhim kho lub peev xwm ntawm lub coil rau overvoltage instantaneous.

6. 1/4 wavelength luv circuited

Lub 1/4 wavelength crowbar yog lub teeb liab microwave cov xov tooj kab thaiv kev tiv thaiv raws kev tsom xam ntawm lub teeb tsom hluav taws xob thiab cov nthwv dej sawv ntawm kev xav ntawm lub kav hlau txais xov. Qhov ntev ntawm cov hlau luv luv hauv cov khoom tiv thaiv no yog raws li kev ua haujlwm lub teeb liab zaus (piv txwv 900 MHz lossis 1800 MHz). Qhov loj me ntawm 1/4 wavelength yog txiav txim siab. Cov kab hluav taws xob thaum uas tig mus luv luv muaj qhov tsis muaj qhov kawg rau lub teeb liab ua haujlwm, uas yog sib npaug rau qhov qhib kev sib txuas thiab tsis cuam tshuam qhov kev xa ntawm lub teeb liab. Txawm li cas los xij, rau xob laim ntaws, vim tias lub zog hluav taws xob feem ntau tau faib hauv qab n + KHZ, qhov bar luv rau Cov xob laim ntawm qhov tsis sib haum yog qhov me me, sib npaug hauv lub luv luv Circuit Court, qhov hluav taws xob qib theem raug tso tawm mus rau hauv av.

Txij li cov taub ntawm 1/4 wavelength shorting bar feem ntau yog ob peb millimeters, qhov cuam tshuam tam sim no zoo, thiab nws tuaj yeem ncav cuag 30KA (8 / 20μs) lossis ntau dua, thiab cov seem hluav taws xob yog me me. Qhov seem hluav taws xob no feem ntau tshwm sim los ntawm qhov yus tus kheej ntawm lub bar luv. Qhov luv luv yog lub zog siv hluav taws xob nqaim thiab qhov bandwidth yog li ntawm 2% mus rau 20%. Lwm qhov tsis zoo yog tias DC bias tsis tuaj yeem siv rau kav hlau txais xov, uas txwv qee yam kev siv.

Circuit Court yooj yim

Lub voj voos ntawm tus tiv thaiv cov nplai muaj cov ntawv sib txawv raws li kev xav tau sib txawv. Cov khoom siv yooj yim yog cov saum toj-hais ntau hom. Tus kws tshawb fawb kev paub txog xob laim tiv thaiv cov khoom lag luam tuaj yeem tsim ntau yam ntawm kev ncig, ib yam li lub thawv ntim tau siv tau. Cov qauv sib txawv. Nws yog lub luag haujlwm ntawm cov neeg ua haujlwm tiv thaiv xob laim los txhim kho cov khoom lag luam uas muaj txiaj ntsig thiab raug nqi.

Graded tiv thaiv

Cov tiv thaiv kab hluav taws xob tiv thaiv thawj theem xob laim hluav taws xob tuaj yeem los ntshav qoj ib ce tam sim no los yog los ntshav thaum cov xaim hluav taws xob kis tau raug rau lub teeb hluav taws xob ncaj qha. Rau cov chaw uas muaj hluav taws xob xob laim ncaj qha tuaj yeem tshwm sim, HOOB-I yuav tsum tau ua. Xob laim tiv thaiv. Qhov thib ob ntawm lub teeb hluav taws xob ntes hluav taws xob tiv thaiv hluav taws xob tiv thaiv hluav taws xob rau cov seem hluav taws xob ntawm pem hauv ntej-kawg tiv thaiv xob laim thiab tiv thaiv xob laim xob laim ntawm cheeb tsam. Thaum muaj qhov loj ntawm lub zog hluav taws xob nyob rau sab pem hauv ntej, tseem tshuav ib feem ntawm cov cuab yeej siv lossis theem peb ntawm kev tiv thaiv xob laim. Nws yog qhov ntau ntawm lub zog uas yuav kis tau thiab yuav tsum tau ntes ob-theem rau kev nqus ntxiv. Nyob rau tib lub sijhawm, kis kab ntawm thawj theem sib tsuam hluav taws xob ntes hluav taws xob tseem yuav ua rau xob laim hluav taws xob hluav taws xob hluav taws xob hluav taws xob LEMP. Thaum cov kab ntev ntev, lub zog ntawm kev tsim hluav taws xob tau dhau los ua qhov loj txaus, thiab qib thib ob rau kev tiv thaiv xob laim hluav taws xob xav tau txuas ntxiv tso tawm ntawm lub zog xob laim. Qhov theem peb ntes hluav taws xob tiv thaiv LEMP thiab cov hluav taws xob muaj hluav taws xob dhau los ntawm kev ntes hluav taws xob theem ob.

Daim duab-5-Tshaj Tag Nrho-saib-ntawm-ib-xob laim-tiv thaiv-cheeb tsam-tswvyim

Kev tiv thaiv theem ib

Lub hom phiaj ntawm cov neeg tiv thaiv tsaj kom tiv thaiv kom tsis txhob muaj cov xaim hluav taws xob kom tau ncaj qha los ntawm thaj chaw LPZ0 mus rau hauv thaj chaw LPZ1, txwv cov kis hluav taws xob dhau ntawm kaum tawm mus txog ntau pua txhiab mus rau 2500-3000V.

Cov tiv thaiv kab hluav taws xob tiv thaiv nyob rau sab hluav taws xob tsawg ntawm lub zog hluav taws xob yog qhov peb-theem voltage hloov hom fais fab mov xob laim ntes. Lub teeb hluav taws xob flux yuav tsum tsis txhob qis dua 60KA. Lub zog muab hluav taws xob ntes neeg raug ntes ntawm chav kawm no yuav yog lub peev xwm loj uas muaj peev xwm muab hluav taws xob ntes hluav taws xob txuas ntawm qhov sib txuas ntawm cov ntu ntawm qhov nkag ntawm tus neeg siv lub zog hluav taws xob thiab lub ntiaj teb. Feem ntau yuav tsum muaj lub zog tiv thaiv lub zog ntawm cov chav kawm no muaj qhov cuam tshuam loj tshaj li 100KA ib ntu, thiab qhov yuav tsum muaj qhov hluav taws xob tsawg dua 1500V, uas hu ua CLASS I lub zog tiv thaiv thiab cov tiv thaiv kom zoo. Tsim los kom tiv thaiv lub teeb hluav taws xob loj ntawm lub teeb hluav taws xob thiab hluav taws xob tiv thaiv hluav taws xob, thiab kom muaj peev xwm xav tau kev ua haujlwm siab, cov neeg siv hluav taws xob no tau ntes cov teeb hluav taws xob ntau rau hauv av tam sim no. Lawv tsuas yog muab cov roj limiting (qhov siab tshaj plaws qhov hluav taws xob uas tshwm ntawm kab thaum lub inrush tam sim no ntws los ntawm lub zog hluav taws xob ntes tau raug hu ua muaj kev txwv tsis pub dhau). CLASS Class I tus tiv thaiv kev tiv thaiv tsuas yog siv los nqus cov dej ntws loj, tsuas yog Lawv tsis tuaj yeem tiv thaiv cov khoom siv hluav taws xob sab hauv lub zog hluav taws xob.

Thawj-qib fais fab tus tiv thaiv hluav taws xob tuaj yeem tiv thaiv 10 / 350μs thiab 100KA xob laim hluav taws xob thiab ua tau raws li cov qauv kev tiv thaiv zoo tshaj plaws los ntawm IEC. Cov txheej txheem thev naus laus zis yog raws li hauv qab no: cov hluav taws xob flux ntau dua los yog sib npaug 100KA (10 / 350μs); qhov seem hluav taws xob tsis siab tshaj 2.5KV; cov lus teb lub sijhawm tsawg dua lossis sib npaug rau 100ns.

Qhov kev tiv thaiv theem ob

Lub hom phiaj ntawm cov tiv thaiv kab mob mus ntxiv yog txwv tsis pub muaj cov xaim hluav taws xob ntau dhau los ntawm thawj lub teeb hluav taws xob ntes mus rau 1500-2000V thiab kom txuas cov khoom hluav taws xob rau LPZ1-LPZ2.

Lub zog hluav taws xob ntes hluav taws xob ntes tawm los ntawm cov kab hluav taws xob faib tawm kab yuav tsum yog lub zog hluav taws xob los tiv thaiv xob laim hluav taws xob tiv thaiv hluav taws xob tiv thaiv kev tiv thaiv kev tiv thaiv qib thib ob. Lub teeb tam sim no muaj peev xwm yuav tsum tsis pub tsawg dua 20KA. Nws yuav tsum tau nruab rau hauv lub tshuab fais fab rau cov khoom siv hluav taws xob tseem ceeb lossis rhiab. Kev tsheb chaw nres tsheb. Cov fais fab ntawm cov neeg ntes lub zog muab ib qho zoo dua qhov nqus lub zog ntawm lub zog seem los ntawm cov neeg txaij hluav taws xob ntes ntawm cov neeg siv khoom siv fais fab lub zog thiab muaj qhov muaj peev xwm zoo tshaj plaws ntawm kev hloov pauv. Lub zog hluav taws xob ntes tau siv nyob rau hauv cheeb tsam no yuav tsum muaj qhov cuam tshuam loj tshaj plaws ntawm 45kA lossis ntau dua rau ib ntu, thiab qhov yuav tsum tau siv hluav taws xob tsawg dua 1200V, uas yog hu ua a HOOB II lub hwj chim muab xob laim ntawm kev ntes. Kev siv hluav taws xob rau cov neeg siv hluav taws xob tuaj yeem ua tiav kev tiv thaiv qib thib ob kom ua tau raws li qhov yuav tsum tau ua ntawm kev ua haujlwm ntawm cov khoom siv hluav taws xob.

Qhov thib ob-theem lub zog hluav taws xob tiv thaiv siv Class C tiv thaiv rau qib-rau-theem, theem-av thiab nruab nrab-av puv kev tiv thaiv. Cov cuab yeej tseem ceeb yog: xob laim txaus muaj peev xwm ntau dua los yog sib npaug 40KA (8 / 20μs); hluav taws xob residual Qhov siab kawg tus nqi tsis ntau tshaj 1000V; lub sijhawm teb tsis tshaj 25ns.

Thib peb theem kev tiv thaiv

Lub hom phiaj ntawm cov tiv thaiv qoj ib ce yog thaum kawg tiv thaiv cov cuab yeej los ntawm kev txo cov khoom seem hluav taws xob mus rau qis dua 1000V kom lub zog hluav taws xob tsis ua rau cov khoom puas.

Thaum lub hwj huam hluav taws xob tiv thaiv hluav taws xob tiv thaiv lub cuab yeej ntsia tom qab qhov kawg ntawm AC lub zog hluav taws xob ntawm cov khoom siv hluav taws xob cov cuab yeej hluav taws xob tau raug siv los ua kev tiv thaiv qib thib peb, nws yuav tsum yog cov hluav taws xob tiv thaiv hluav taws xob tiv thaiv xob hluav taws xob tiv thaiv xob, thiab nws xob laim. lub peev xwm tam sim no yuav tsum tsis pub tsawg dua 10KA.

Cov kab kawg ntawm kev tiv thaiv kev tiv thaiv surge tuaj yeem siv nrog lub zog tsim hluav taws xob tiv thaiv sab hauv lub zog hluav taws xob sab hauv ntawm cov neeg siv khoom kom ua tiav qhov kev tshem tawm ntawm cov kev hloov me me. Lub zog hluav taws xob ntes tau siv ntawm no yuav tsum muaj qhov cuam tshuam loj tshaj plaws ntawm 20KA lossis tsawg dua rau ib ntu, thiab qhov yuav tsum tau siv hluav taws xob tsawg yuav tsum qis dua 1000V. Nws yog qhov tsim nyog kom muaj a theem peb ntawm kev tiv thaiv rau qee qhov tseem ceeb lossis tshwj xeeb hauv cov khoom siv hluav taws xob, nrog rau kev tiv thaiv cov khoom siv hluav taws xob los ntawm kev hloov pauv overvoltages tsim hauv qhov system.

Txog kev txhim kho hluav taws xob siv hauv cov khoom siv sib txuas lus microwave, chaw nres tsheb sib txuas lus txawb thiab cov khoom siv radar, nws yog qhov tsim nyog los xaiv cov DC fais fab mov hluav taws xob tiv thaiv hluav taws xob tiv thaiv cov khoom lag luam nrog cov ua haujlwm voltage hloov kho raws li theem kawg tiv thaiv raws li kev tiv thaiv ntawm nws ua haujlwm voltage.

Qeb 4 thiab siab dua

Tus tiv thaiv hluav taws xob raws li kev tiv thaiv theem voltage ntawm cov cuab yeej tiv thaiv, yog tias kev tiv thaiv ob theem kev tiv thaiv hluav taws xob tuaj yeem ua tiav qhov kev txwv voltage qis dua qhov ntsuas voltage ntawm cov khoom, nws tsuas yog yuav tsum ua ob theem kev tiv thaiv, yog tias cov cuab yeej tiv thaiv voltage theem tau qis, nws yuav Xav Tau plaub lossis ntau theem kev tiv thaiv. Qeb plaub ntawm kev tiv thaiv ntawm nws cov hluav taws xob muaj peev xwm khiav dej num yuav tsum tsis txhob qis dua 5KA.

Txhim kho txoj kev

1, SPD tsis tu ncua kev teeb tsa yuav tsum ua

Cov neeg tiv thaiv phais mob tau nruab nrog 35mm txheej txheem kev tsheb nqaj hlau

Txhaum rau SPDs, cov kauj ruam hauv qab no yuav tsum tau ua raws li kev teeb tsa tsis tu ncua:

1) Xam pom qhov tawm tam sim no txoj hauv kev

2) Khij cov hlau rau cov hluav taws xob ntxiv qhov teeb meem tshwm sim los ntawm lub tshuab ntaus ntawv.

3) Txhawm rau zam qhov tsis muaj qhov tsis muaj qhov sib txuas, cim khij tus PE tus coj ntawm txhua lub cuab yeej.

4) Tsim kom muaj qhov sib khi ntawm cov khoom siv thiab SPD.

5) Los ua kom muaj kev sib koom ua ke ntawm lub zog ntawm ntau qib SPD

Txhawm rau kom txwv qhov sib npaug ntawm qhov sib txuas ntawm qhov tiv thaiv tiv thaiv thiab qhov tsis muaj kev tiv thaiv ntawm lub cuab yeej, qee qhov ntsuas tau xav tau. Qhov sib txuam ua ke tuaj yeem txo los ntawm kev sib cais ntawm lub siab hnov ​​los ntawm lub rooj sib txig sib xyaw, kev xaiv ntawm lub kaum sab xis, thiab qhov kev txwv ntawm lub cheeb tsam kaw.

Thaum tus neeg nqa khoom tam sim no coj los ua ib feem ntawm lub voj kaw, lub voj thiab cov khoom siv hluav taws xob raug txo kom qis thaum tus neeg xyuas pib txuas mus rau hauv Circuit Court.

Feem ntau, nws yog qhov zoo dua los cais cov hlau tiv thaiv los ntawm cov hlau tsis muaj kev tiv thaiv thiab nws yuav tsum muab cais tawm ntawm cov hlau hlau hauv av. Nyob rau tib lub sijhawm, txhawm rau kom tsis txhob muaj kev hloov txuas ntawm lub ntsuas hluav taws xob txuas ntawm lub hwj chim cable thiab kev sib txuas lus cable, kev ntsuas tsim nyog yuav tsum tau ua.

2, SPD grounding xaim diam duab xaiv

Cov kab kab: Qhov yuav tsum muaj ntau tshaj 2.5mm2; thaum qhov ntev tshaj 0.5m, nws yuav tsum muaj qhov ntau dua 4mm2.

Lub thawv hluav taws xob: Thaum lub theem kab sib tshooj ntu thaj tsam S≤16mm2, cov kab hauv av siv S; thaum lub sijhawm kab ntu-qhov chaw ntu yog 16 hli2≤S≤35 hli2, cov kab hauv av siv 16 hli2; thaum lub ntu kab ntu ntu ntu S≥35mm2, cov kab hauv av yuav tsum S / 2.

Lub ntsiab lus tsis tseem ceeb

  1. Nominal voltage Un: Qhov ntsuas qhov ntsuas hluav taws xob ntawm lub thaiv kev tiv thaiv zoo ib yam. Hauv cov ntaub ntawv siv thev naus laus zis, qhov ntsuas no qhia tau hais tias hom kev tiv thaiv uas yuav tsum raug xaiv, uas qhia tau hais tias tus nqi zoo ntawm AC lossis DC voltage.
  1. Rated voltage Uc: tuaj yeem siv rau qhov kawg ntawm kev tiv thaiv tus neeg tiv thaiv ntev ntev uas tsis ua rau muaj kev hloov pauv ntawm cov yam ntxwv ntawm tus tiv thaiv thiab ua kom lub siab tshaj plaws voltage zoo tus nqi ntawm cov khoom tiv thaiv.
  1. Rated tawm tam sim no Isn: qhov siab tshaj plaws inrush tam sim no ncov uas tus tiv thaiv tiv taus thaum lub teeb hluav taws xob txheem nrog qhov nthwv cua ntawm 8/20 μs tau thov rau tus tiv thaiv rau 10 zaug.
  1. Qhov siab tshaj tawm tam sim no Imax: qhov siab tshaj plaws inrush tam sim no lub ncov uas tus tiv thaiv tiv taus thaum lub teeb hluav taws xob txheem nrog qhov nthwv dej ntawm 8/20 iss tau thov rau tus tiv thaiv.
  1. Kev tiv thaiv voltage theem: Tus nqi siab tshaj plaws ntawm tus tiv thaiv hauv kev ntsuam xyuas hauv qab no: qhov flashover voltage ntawm txoj kab nqes ntawm 1KV / μs; qhov seem hluav taws xob ntawm qhov rated paug tam sim no.
  1. Teb lub sijhawm TA: Qhov kev txiav txim siab nkag siab thiab rhuav tshem lub sijhawm ntawm kev tiv thaiv tshwj xeeb feem ntau cuam tshuam hauv tus tiv thaiv, thiab kev hloov pauv nyob rau qee lub sijhawm yog nyob ntawm txoj kab nqes ntawm du / dt lossis di / dt.
  1. Cov ntaub ntawv kis tau tus nqi Vs: qhia tias muaj pes tsawg qhov tseem ceeb kis tau hauv ib pliag, qhov ntsuas yog: bps; nws yog qhov siv tus nqi ntawm cov hluav taws xob tiv thaiv cov cuab yeej raug xaiv tau xaiv hauv cov ntaub ntawv xa cov ntaub ntawv, thiab cov ntaub ntawv sib kis ntawm cov khoom siv tiv thaiv xob laim yog nyob ntawm qhov sib kis ntawm cov kab ke.
  1. Tso tsis tau cov Ae: Qhov sib piv ntawm qhov hluav taws xob ua ntej thiab tom qab tus tiv thaiv tso rau ntawm ib qho zaus.
  1. Rov Qab Los Ar: Qhia txog qhov sib piv ntawm txoj kab kev dhau los uas tiv thaiv los ntawm kev tiv thaiv lub cuab yeej (qhov taw tes rov qab), uas yog qhov ntsuas uas ncaj qha ntsuas seb cov khoom tiv thaiv puas sib haum nrog qhov system impedance.
  1. Qhov siab ntev tshaj tawm tam sim no: hais txog lub ntsiab ntawm qhov siab tshaj plaws inrush tam sim no uas tus tiv thaiv tau raug thaum tus qauv hluav taws xob xob nrog qhov nthwv dej ntawm 8 / 20μs tau thov rau txhua qhov av.
  1. Qhov siab tshaj plaws tom qab tawm tam sim no: qhov siab tshaj plaws inrush tam sim no lub ncov uas tus tiv thaiv tau raug thaum tus qauv hluav taws xob xaim hluav taws xob nrog qhov nthwv ntawm 8 / 20μs tau thov nruab nrab ntawm kab thiab kab.
  1. Online impedance: hais txog qhov tawm ntawm impedance thiab inductive reactance ntawm lub voj ntws los ntawm tus tiv thaiv hauv qab nominal voltage Un. Feem ntau hu ua "kev tiv thaiv kab ke."
  1. Peak paug tam sim no: Nws muaj ob hom: rated paug tawm tam sim no Isn thiab qhov siab tshaj tawm tam sim no Imax.
  1. Xau tam sim no: hais txog DC tam sim no ntws los ntawm tus tiv thaiv ntawm ib qho nominal voltage Un ntawm 75 lossis 80.

Cais los ntawm txoj cai ua haujlwm

  1. Hloov hom: txoj cai ua haujlwm ntawm tus tiv thaiv hluav taws xob yog siab impedance thaum tsis muaj qhov nrawm nrawm nrawm, tab sis ib zaug nws teb rau xob laim hloov hluav taws xob overvoltage, nws qhov cuam tshuam yuav dheev hloov mus rau tus nqi qis, cia lub xob laim tam sim no dhau. Thaum siv raws li cov khoom siv ntawd, cov cuab yeej muaj: qhov sib cais tawm, tso pa tawm ntawm lub raj, thyristor, thiab zoo li.
  1. Voltage limiting type: Lub ntsiab cai ua haujlwm ntawm tus tiv thaiv hluav taws xob yog siab impedance thaum tsis muaj kev hloov pauv sab nraud, tab sis nws qhov kev cuam tshuam yuav txo qis txuas nrog qhov nce ntawm surge tam sim no thiab voltage, thiab nws qhov tam sim no thiab qhov hluav taws xob cov yam ntxwv muaj zog tsis tiv thaiv. Cov cuab yeej siv xws li cov khoom siv yog: zinc oxide, varistors, hluav taws xob diodes, avalanche diodes, thiab cov zoo li.
  1. Sib faib los yog cov turbulent ：

Shunt hom: Txaws rau cov khoom siv tiv thaiv, ua kom pom qhov cuam tshuam qis rau lub ntsej muag xob laim thiab lub siab cuam tshuam rau cov kev ua haujlwm ib txwm muaj.

Hom turbulent: Hauv cov cuab yeej siv tiv thaiv, nws ua kom pom qhov cuam tshuam siab ntawm cov hluav taws xob laim thiab qhov cuam tshuam tsawg rau qhov ib txwm ua haujlwm.

Cov cuab yeej siv xws li cov khoom siv yog: caj pas txhaws, lim hla dhau, lim hla qis, ntu luv ntu, thiab lwm yam.

Kev Siv Khoom Siv Tiv Thaiv Kev Nyab Xeeb SPD

(1) Tus tiv thaiv hluav taws xob: AC lub zog tiv thaiv, DC lub zog tiv thaiv, hloov mus rau lub zog tiv thaiv, thiab lwm yam.

AC lub zog hluav taws xob tiv thaiv hluav taws xob tsim nyog rau kev tiv thaiv hluav taws xob tiv thaiv cov chav faib hluav taws xob, cov thawv faib hluav taws xob, hloov cov tub rau khoom, AC / DC lub zog faib hluav taws xob, thiab lwm yam.

Muaj cov thawv tawm sab nraud thiab cov thawv txheej tsev faib khoom hauv tsev;

Rau qhov ntsuas hluav taws xob tsawg tsawg (220 / 380VAC) muaj zog siv hluav taws xob thiab tuav lub zog rau pej xeem;

Hauv lub kaw lus fais fab, nws yog tsuas yog siv rau kev tawm tswv yim lossis tawm ntawm peb-theem fais fab hauv lub vijtsam hluav taws xob ntawm chav tswj lub ntsiab ntawm lub tshuab hloov kho tshuab lossis hloov chaw.

Haum rau ntau qhov DC zog ua haujlwm, xws li:

DC hluav taws xob faib vaj huam sib luag;

DC lub zog khoom siv;

DC faib lub thawv;

Cov ntaub ntawv hluav taws xob system txee;

Cov khoom tsim tawm ntawm lub zog theem nrab.

(2) Lub cim tiv thaiv: cov cim hluav taws xob tsawg, tus tiv thaiv cov teeb liab loj, kav hlau txais xov tiv thaiv, thiab lwm yam.

Network lub teeb liab tiv thaiv ntaus:

Kev tiv thaiv overvoltage tiv thaiv los ntawm xob laim ntaus thiab xob laim xob electromagnetic rau cov khoom siv network xws li 10 / 100Mbps SWITCH, HUB, ROUTER; Network chav network hloov kev tiv thaiv; · Network chav server tiv thaiv; Network chav lwm network interface ntaus kev tiv thaiv;

Lub 24-chaw nres nkoj ua ke tiv thaiv lub teeb hluav taws xob yog tsuas yog siv rau hauv nruab nrab ntawm kev tiv thaiv ntawm ntau lub teeb liab sib txuas hauv cov kab sib txuas hauv lub network thiab cov txee hloov chaw.

Video teeb liab xob tiv thaiv ntaus ntawv:

Cov kws tiv thaiv kab mob feem ntau siv rau kis-rau-taw tes tiv thaiv cov cuab yeej video. Nws tuaj yeem tiv thaiv ntau yam khoom siv sib kis video los ntawm kev tawm tsam kev tawm tsam sab hauv thiab kev cuam tshuam ntawm voltage los ntawm cov teeb liab kis kab. Nws kuj tseem muaj rau kis tau tus mob RF nyob rau hauv tib lub zog ua hauj lwm. Lub chaw sib xyaw ua ke ntawm cov yeeb yaj kiab hluav taws xob tiv thaiv lub thawv yog siv rau hauv nruab nrab ntawm kev tiv thaiv ntawm kev tswj cov khoom siv xws li hard disk recorders thiab video cutter hauv cov tswj tuav tswj.

Surge Tiv Thaiv Hom

Cov neeg raug ntes feem ntau nyob rau hauv kev ua lag luam yog: Tuam Tshoj LSP surgeor tiv thaiv, Lub teb chaws Yelemees OBO surge tiv thaiv, DEHN surge tiv thaiv, PHOENIX surge tiv thaiv, US ECS surge tiv thaiv, US PANAMAX surge tiv thaiv, INNOVATIVE surge tiv thaiv, U.S. , UK ESP Furse surge tiv thaiv thiab lwm yam.