Rau cov kws tsim hluav taws xob, kev paub txog kev paub txog kev txawj ntse ntawm Surge Protective Devices yog lub hauv paus tseem ceeb rau kev tsim hluav taws xob, kev tsim kho, kev ua haujlwm, thiab kev saib xyuas. Cov kev paub yooj yim tseem ceeb tau sau tseg raws li hauv qab no:
1. Kev paub txog kev ua haujlwm tseem ceeb
Cov kws tshaj lij yuav tsum paub cov yam ntxwv tsis zoo ntawm SPDs: kev ua haujlwm siab hauv ib txwm muaj hluav taws xob thiab tsis muaj zog hauv overvoltage. Nws yog ib qho tsim nyog kom paub meej tias SPDs tau txais kev teeb tsa kev sib txuas, nrog rau kev ua haujlwm tseem ceeb ntawm kev hloov pauv tam sim no thiab voltage clamping, tsis yog tam sim no thaiv. Kev nkag siab txog kev ua haujlwm ntawm cov ntsiab lus tseem ceeb xws li varistors, cov raj xa hluav taws xob, thiab TVS diodes yog lub hauv paus rau kev txiav txim siab SPD kev ua tau zoo.
2. Kev faib tawm thiab kev paub zoo sib xws
Paub txog IEC tus qauv Hom 1/Type 2/Type 3 peb- theem kev tiv thaiv, thiab paub txog cov ntsiab lus sib xws ntawm ntau hom SPDs. Hom 1 yog siv rau kev tiv thaiv kev tiv thaiv hluav taws xob tag nrho, Hom 2 rau kev tiv thaiv kev faib tawm thib ob, thiab Hom 3 rau kev tiv thaiv lub davhlau ya nyob twg. Cov kws kho tsheb yuav tsum xaiv qhov sib xws SPD hom raws li qhov system voltage, qib tiv thaiv xob laim, thiab cov khoom siv rhiab heev.
4. Txuj kev teeb tsa thiab cov kab hluav taws xob specifications
SPD kev teeb tsa yuav tsum ua raws li cov lus qhia tshwj xeeb ntawm cov kab hluav taws xob luv luv thiab kev ntseeg tau hauv av. Kev xaim ntev ntev yuav ua rau cov kab inductance nce ntxiv thiab txo kev tiv thaiv. Cov kws tshaj lij yuav tsum paub txog cov txheej txheem txuas txuas txuas ntawm lub zog SPDs thiab cov koob - cov qauv xaim hluav taws xob sib txuas ntawm cov teeb liab SPDs, nrog rau cov kev sib txuas hauv av ntawm cov qib sib txawv.
5. Kev txiav txim txhaum cai thiab kev paub txog kev saib xyuas
Ua kom paub qhov kev laus thiab tsis ua haujlwm ntawm SPDs: ntev - lub sij hawm surge cuam tshuam yuav ua rau cov khoom laus, txo qhov muaj peev xwm tawm, thiab nce qhov seem seem. Kawm los txiav txim rau SPD kev khiav hauj lwm raws li txoj cai los ntawm qhov taw qhia teeb thiab saib xyuas cov teeb liab, thiab paub txog kev tshawb nrhiav thiab hloov pauv cov qauv kom tsis txhob muaj kev tiv thaiv tsis ua haujlwm los ntawm cov khoom siv laus.
6. Scenario-raws li txoj cai xaiv
Paub qhov txawv ntawm daim ntawv thov sib txawv ntawm lub zog SPDs thiab teeb liab SPDs, kev lag luam thiab pej xeem SPDs. Rau siab- kub, av noo, thiab sab nraum zoov hnyav ib puag ncig, xaiv muaj- qib kaw thiab ib puag ncig- tiv taus SPDs; rau cov cuab yeej ntse ntse, xaiv qis- seem-voltage Type 3 SPDs kom ntseeg tau tias muaj kev tiv thaiv.