TVSS (Pakati pa Mpweya Wowonongeka)

TVSS (Kutha kwa Mpweya Wokwanira Wokwanira) ndi SPD (Chipangizo choteteza Chitetezo), zonsezi zimagwiritsa ntchito chipangizo chomwe chingateteze magetsi otsika kwambiri, kuphulika kapena kupititsa patsogolo (kugwedezeka kosawonekera kochokera kumagetsi).

Mawu akuti TVSS amadziwika kwambiri mu mayiko ena a UL monga United States, Canada ndi mayiko ena a ku Middle ndi South America kapena ngakhale Philippines. 

TVSS vs TVS, kodi ndizofanana?

Onani kuti musasakanize mawuwo TVSS ndi TV. TVS ndifupikitsa kwa nthawi yayitali ya voltage suppressor. Kuchokera pa dzina lawo, iwo amawoneka ngati chinthu chomwecho. Komabe, muchitetezo choteteza chitetezo, TVS ndi magetsi (a diode) omwe amachititsa kuti pakhale kuchoka. Ndi chimodzi mwa zida zowonjezera zowonjezera za 3 (zina 2 ndi MOV ndi GDT). Monga MOV ndi GDT, TVS ingagwiritsidwe ntchito kupanga TVSS ndipo kwenikweni imagwiritsidwa ntchito kugetetsa ndi MOV ndi GDT. GDT ikhoza kuthana ndi mphezi yayikulu komanso yowonjezera pakali pano komabe imayendetsa pang'onopang'ono pamene TVs imatha kuthana ndi kanthawi kakang'ono kwambiri koma imayankha njira mofulumira kuposa GDT ndi MOV ndipo motero 3 imapanga njira yowonongeka bwino pakupitirira.

Nchifukwa chiyani opanga SPD sakanenanso za zinthu zawo monga TVSS?

TVSS Zipangizo nthawi zonse zimakhala za mabanja akuluakulu okhudzana ndi zofooka zomwe zimatchedwa SPDs (Surge Protective Devices). Kuyambira ndi UL 1449 3rd Edition ndi 2008 National Electrical Code, mawu oti "SPD" adasinthiratu mawu oti "TVSS" (Transient Voltage Surge Suppressor) ndi "Secondary Surge Arrester". Ma SPD tsopano amadziwika ngati mtundu 1, Type 2, Type 3 kapena Type 4 ndipo amasankhidwa kutengera momwe amagwiritsidwira ntchito ndi komwe adzagwiritsidwe ntchito. Ndikusintha kwamatchulidwe aposachedwa kwa UL ndi NEC, palibenso mabungwe omwe amagwiritsa ntchito mawu oti TVSS, monga IEEE®, IEC® ndi NEMA™ akhala akugwiritsa ntchito mawu oti "SPD" kwa zaka zambiri.

Izi ndizosavuta kusintha kwa TVSS ku SPD. Komabe, makamaka, TVSS ndi SPD sizimasinthasintha. TVSS yomwe kale idadziwika tsopano ndi mtundu wa 2 SPD monga momwe zilili kale muyezo wa UL, TVSS imayikidwa pambali pazitseko. Komabe SPD ikhoza kuyimitsidwa yokhala pamtunda kapena kumbali.

Komabe, kwa ogulitsa ambiri, mutenga TVSS ndi SPD monga chinthu chomwecho ndi kunyalanyaza kusiyana kwakukulu kwazithukuko.

TVSS ndi Surge Suppressor kapena Protect Surge Prototype mwa njira ya mphamvu?

Pali zida zamagetsi kapena zotengera zambiri zomwe zimakhala ndi chitetezo pamsika. Nthawi zambiri timatcha mitundu iyi yazinthu zopondereza kapena zotchinjiriza ndipo chimodzi mwazinthu zazikuluzikulu ndizoyeserera. Komabe opondereza otsekemerawa kapena otetezera mawonekedwe amtundu wamagetsi sangafanane ndi TVSS.

Mutha kuganiza za TVSS ngati banja lalikulu komanso mankhwala osokoneza bongo. Mwachidziwitso, timachititsa kuti tizilombo toyambitsa matendawa tizilombo toyambitsa matenda kapena tizilombo toyambitsa matenda ta 3 TVSS kapena kugwiritsa ntchito TVSS monga momwe zimayikidwira pambali ndi zipangizo zotetezedwa ndipo zimakhala chitetezo chotsiriza choteteza chitetezo. Lembani 1 kapena mtundu wa 2 TVSS kawirikawiri ndi mawonekedwe a bokosi kapena gulu, nthawizina akhoza kukhala aakulu kwambiri. Choyimira chake chachikulu sichikulingalira kwa Joules koma mphamvu yamagetsi. Lembani 1 / 2 / 3 TVSS ikupanga mgwirizano wa 3 wopangira chitetezo.

Kodi TVSS (yomwe imakhala yothamanga kwambiri pamagetsi) imagwira ntchito bwanji?

Mawuwa amatulutsa chipangizo chotetezera (SPD) komanso nthawi yowonjezera kutuluka kwa mpweya (TVSS) amagwiritsidwa ntchito pofotokozera zipangizo zamagetsi zomwe zimayikidwa pamagulu opatsa mphamvu, njira zowonetsera kayendedwe ka machitidwe, machitidwe a mauthenga, ndi machitidwe ena olemera ogulitsa mafakitale, pofuna kutetezera mazitsulo ndi magetsi a magetsi, kuphatikizapo omwe amachititsa mphezi. Nthawi zina zipangizo zamakonozi zimayikidwa muzipinda zogwirira ntchito zogwirira magetsi, kuteteza zipangizo m'nyumba kuti zikhale zoopsa zofanana.

Kodi nthawi yayitali imayimilira bwanji mu nthawi yochepa yowonjezera mpweya?

Ngati inu mutayang'ana mmwamba dikishonaleyi, nthawi yayitali imatanthauza amatha kwa kanthawi kochepa. Kapenanso ngati mutayang'ana pa Wikipedia, ingakuwuzeni: Chochitika chanthawi yayitali ndimphamvu yayifupi m'dongosolo lomwe lidayambitsidwa ndi kusintha kwadzidzidzi kwa dziko.

Komano pofika kumalo oponderezedwa, kodi nthawi yayitali ndi yotani? Ngati kuponderezedwa kumatha, mwachitsanzo, masekondi a 5, kodi ndi kochepa? Ayi ndithu. Powonongeka kwapang'onopang'ono, kutuluka kwadzidzidzi kumachitika mu microsecond (1 / 1000 kachiwiri) kapena ngakhale millisecond (1 / 1000000 kachiwiri). Kotero tsopano inu mukuzindikira kuti kuthamanga kungakhoze kukhala kothamanga.

Ndipo izo zikubweretsa mutu wina: kodi kuponderezana kumakhala kotalika bwanji kuposa nthawi yayitali komanso momwe chivomezi chothamangitsira (kapena chipangizo choteteza chitetezo) chikuyankhira pa izi?

Kuthamanga kumeneku ndikomene timatcha kuti kupitilira kwachangu (TOV). Kuthamanga kwachisawawa si chinthu chokhachokha chimene chingathe kuthandizira. Kwenikweni, kuthamangitsidwa ndi munthu amene amazunzidwa ndi kanthawi kochepa. Kupitirira, mwamphamvu kwambiri, kumangokhala kwa microseconds kapena milliseconds ndipo motero kumangotengera mphamvu zocheperapo pokhapokha. Komabe TOV, yomwe imakhala nthawi yayitali, imabweretsa mavuto omwe amachititsa kuti zitsulo zikhale zowonjezereka zomwe zimakhala zogwiritsa ntchito zitsulo zakutchire varistor (MOV) ndipo motero MOV mkati mwake imatha kutenthetsa ndi kutentha utsi.

Choncho, gridi yamagetsi yolimba ndi yofunika kwambiri pamagetsi onse ophatikizirapo kuphatikizapo kuthamanga kwambiri. Chabwino, mwina mukudabwa: Ndimakhala kumalo kumene gridi yamagetsi ndi nyansi. Pankhaniyi, TVSS siigwiritsidwe ntchito? Anthu a ku Ulaya oponderezedwa kutulutsa operekera katundu watipatsa chitsanzo chabwino kwambiri. Pafupifupi zaka 20 zapitazo, opanga makina opanga maulendo a ku Ulaya anayamba kutumiza katundu wa chitetezo ku China koma ambiri a SPDs, omwe amagwira bwino bwino ku Ulaya, akuwotchedwa mu ntchito. Chimodzi mwa zifukwa zazikulu ndikuti Ulaya ali ndi galasi lamphamvu kwambiri ndipo motero opanga SPD akuyambitsa chifuwa chachikulu ndi Uc / MCOV (kupitirizabe kuthamanga / kupitirirabe kupitirira pa voltage) pafupi ndi 255V. Komabe zaka 20 zapitazo ku China, gridi yamagetsi sali yangwiro ndipo kuthamanga kwa magetsi kumachitika kawirikawiri. Vutoli limathetsedwa pamene opanga SPD atenga zapamwamba za Uc / MCOV.

Choncho, malinga ngati mutasankha TVSS ndi Econom / MCOV yapamwamba, ndibwino kugwiritsa ntchito TVSS m'malo amtundu wosinthasintha. Mwachitsanzo, tikatumiza katundu wathu ku India, timatenga Uc / MCOV pa 320V kapena 385V.

Mitundu Yambiri ya TVSS (Kutsika Kwambiri Pogwiritsa Ntchito Mpweya Wokwanira)

Kodi zikutanthauzanji ndi mtundu wa 1 / 2 / 3 TVSS? Muyezo wa UL 1449, mtundu wa TVSS umadalira makamaka malo ake opangira.

Gwiritsani ntchito 1 TVSS, ngakhale kuti imayikidwa pamzere wa pakhomo la utumiki, imagwiritsidwa ntchito paliponse mkati mwa kayendedwe ka mphamvu.

Mtundu wa 2 TVSS umayikidwa pamtundu wothandizira (kutanthauza gulu la nthambi) pamene mtundu 3 TVSS (nthawi zambiri mphamvu zamagetsi, zotengera kapena zikwama) zimayikidwa pafupi ndi zida zotetezedwa.

Pano pali fanizo la mitundu ya TVSS yochokera kumalo osungira.

Kuchokera ku nemasurge.org

TVSS / Zokwanira Zowonjezereka Zowonjezera

Prosurge ikupereka zotsatila zonse za TVSS pogwiritsa ntchito ANSI / UL 1449 4th edition ndipo EN / IEC61643-1 / 11

Kupitilira Kuthetsa Zothetsera

Onani zambiri

Lumikizanani ndi Prosurge ndi Pezani Mayankho m'maola a 2!

Kambiranani ndife pakompyuta pakhoma lachinsinsi kumbali ya kumanja