Tsarin Kariya na Faruwa2019-04-04T15:50:50+08:00
2404, 2019

Bincike na gwaji na tsayayyar kwarewa na Class I SPDs a karkashin 10 / 350μs da 8 / 20μs Rigon Kaya

Ana buƙatar na'urori masu karewa (SPDs) don a gwada su a ƙarƙashin shafunan kwalliyar ruwa tare da zane-zane na 8 / 20 ms da 10 / 350 ms. Duk da haka, tare da inganta kayan SPD, fasaha da tsayayya na SPDs a karkashin irin wannan gwajin gwajin na bukatar ƙarin bincike. Don bincika da kwatanta iyawar SPDs a karkashin 8 / 20 ms da kuma 10 / 350 ms, ba a yi gwajin gwaje-gwaje akan nau'in nau'in nau'in nau'i-nau'in nau'in nau'in nau'in nau'in nau'in halitta (MOVs) da aka yi amfani dashi ga aji na SPDs. Sakamakon ya nuna cewa MOVs da wutar lantarki masu iyakance mafi girma sun fi dacewa da kwarewa a karkashin 8 / 20ms halin yanzu, yayin da ƙarshe a karkashin 10 / 350ms motsa jiki a yanzu shi ne kishiyar. A karkashin 10 / 350 ms a halin yanzu, rashin nasarar MOV yana da alaka da ƙwaƙwalwar makamashi ta kowace ƙa'idar mota a ƙarƙashin motsi daya. Crack shine babban lalacewa a karkashin 10 / 350ms a halin yanzu, wanda za'a iya kwatanta shi a gefe ɗaya na lalata wutar lantarki na MOV da kuma takarda mai kwakwalwa. Ablation na abu ZnO, wanda aka sanya ta hanyar walƙiya a tsakanin na'ura na lantarki da ZnO surface, ya bayyana kusa da na'ura ta MOV.

1. Gabatarwa

Na'urorin kariya mai zurfi (SPDs) waɗanda aka haɗa da ƙananan ƙarfin wutar lantarki, sadarwa ana buƙatar cibiyoyin sadarwa a ƙarƙashin buƙatun IEC da IEEE […]

1904, 2019

Gabatarwa ga Yankin Kariyar Wutar Lantarki (LPZ)

Ƙungiyar Harkokin Walƙiya (LPZ)

A cikin daidaitattun IEC, mahimmancin nau'ikan 1 / 2 / 3 ko nau'in 1 / 2 / 3 nau'in haɗari mai zurfi yana da kyau sosai. A cikin wannan labarin, za mu gabatar da ra'ayi wanda yake da dangantaka da kalmomin da suka gabata: yanki na walƙiya ko LPZ.

Mene ne tsari na kare walƙiya kuma me yasa hakan yake?

Tunanin kariya ta walƙiya ya samo asali kuma an bayyana shi a cikin ma'aunin IEC 62305-4 wanda shine matsayin duniya game da kariyar walƙiya. Manufar LPZ ta samo asali ne daga ra'ayin rage ƙarfin walƙiya zuwa matakin aminci don kar ya haifar da lalacewar na'urar mashin.

Bari mu ga wani hoto na asali.

To, menene ma'anar kariya ta walƙiya tana nufin?

LPZ 0A: Yankin yanki ba shi da kariya ba a wajen ginin kuma ana fuskantar yajin aiki kai tsaye. A cikin LPZ 0A, babu wata kariya daga tsangwama ta hanyar wutan lantarki yana jawo LEMP (Hasken Wutar Lantarki).

LPZ 0B: Kamar LPZ 0A, shi ma a waje da ginin amma LPZ 0B ana kiyaye shi ta hanyar tsawawar walƙiya ta waje, ko da yaushe a cikin kariya ta yankin walƙiya. Bugu da ƙari, babu kariya ga LEMP ma.

LPZ 1: Yankin shine yankin cikin ginin. A wannan yankin, yana da […]

1604, 2019

Na'urar Kariyar Ajiyayyen don SPD - Mai cuitarya Mashi & Fuse

Kamar yadda muka sani, farfadowa na'urar tsaro za ta lalata ko ma zo ƙarshen rayuwa a tsawon lokaci saboda ƙananan surges maimaitawa, wani ƙarfin karfi ko ci gaba. Kuma lokacin da na'urar farfadowa ta tasowa ta kasa kasa, zai iya haifar da yanayin zagaye na kusa kuma haifar da matsalar tsaro a cikin tsarin wuta. Saboda haka ana buƙatar dacewa da kariya mai sauƙi don aiki tare da na'ura mai karewa.

Akwai nau'i nau'i nau'i nau'i nau'i nau'i nau'i nau'in karewa wanda ya yi amfani da shi tare da SPD don kare kariya: mai kwalliya fashewa da fuse. Don haka, menene Kamfanoni da Kasuwancin su?

Mai karɓar raga

Abũbuwan amfãni

  • Za a iya amfani da shi akai-akai kuma ta haka ya rage kudin da ake biyewa.

disadvantages

  • Kasance da ƙarfin wutan lantarki mafi girma lokacin da kake fuskantar tashin hankalin don haka zai rage matakin kariyar SPD

fis

Abũbuwan amfãni

  • Kusan ƙila rashin aiki
  • Hawan ƙananan matsi a kan halin yanzu
  • Samfurin kanta yafi tasiri mafi mahimmanci musamman ga halin yanzu halin da ake ciki a halin yanzu

disadvantages

  • Bayan aiki, dole ne a maye gurbin fuse kuma ta kara yawan farashin kulawa

Saboda haka a aikace, ana amfani da na'urorin biyu dangane da halin da ake ciki.

904, 2019

Imfani da Length na USB a kan Matsayin Tsaron Tsare Mai Tsarewa

Imfani da Length na USB a kan Matsayin Tsaron Tsare Mai Tsarewa

Mahimmancin shigarwa na SPD yana da wuya a ambata a tattaunawarmu. Akwai dalilai guda biyu:

  1. Shigar da na'urar injiniya na ciki yakamata ya sami izini daga ƙwararren ma'aikacin lantarki. Ba mu so mu ɓatar da cewa wannan ya kamata masu amfani su yi hakan. Kuma idan SPD ya kasance bai dace ba, yana iya haifar da haɗari.
  2. Akwai bidiyo da yawa a kan Youtube wanda ke nuna yadda za a shigar da na'urar kare haɗari. Yana da sauqi da sauƙi fiye da karanta umarnin rubutu.

Amma duk da haka, muna lura da kuskuren da aka sabawa a cikin shigarwa SPD, har ma da masu sana'a suka yi. Don haka a cikin wannan labarin, zamu tattauna wani muhimmin mahimmanciyar jagora a shigar da na'urar kare kariya mai zurfi: don ci gaba da kebul a takaice.

Me ya sa yawancin lokaci yana da mahimmanci? 

Kuna iya tambayar kanku wannan tambayar. Kuma wani lokaci abokan ciniki suna tambayar mu cewa me ya sa ba za ku iya yin tsawon ta na USB ba? Idan kayi tsawon USB, to zan iya shigar da SPD kadan nesa da kwamiti na kewaye. Da kyau, wannan akasin duk wani mai ƙira na SPD yana so ka yi.

Anan mun gabatar da sigogi: VPR (Voltage […]

204, 2019

Aikace-aikacen SPD a Tsakanin Girma

Aikace-aikacen SPD a Tsakanin Girma

A matsayin dan wasa na kasa da kasa a kan kare kariya, Prosurge yana da masarufi mai yawa a duniya. Alal misali, muna da abokan ciniki da dama a kudancin Amirka inda aka sanannun sanannen filin sa. Wani lokaci, muna da abokan ciniki sun tambayi mu: Muna buƙatar shigar da na'urar kare kariya a cikin wani yanki tare da tsawo a sama da 2000m, zai shafi aikin SPD?

To, wannan tambaya ne mai matukar amfani. Kuma a cikin wannan labarin, za mu tattauna game da wannan batu. Za mu gabatar da wasu ra'ayoyin daga masu sana'a daban-daban duk da haka lura da kyau cewa wannan yanki yana buƙatar a kara bincika kuma haka ne bayanin da muke gabatarwa kawai ya zama abin nufi.

Menene Musamman game da Babban Tsawon?

Batun rigakafin kariya / kariya ta walƙiya a cikin tsaunukan yanki koyaushe koyaushe yana zama mai amfani. A cikin ILPS 2018 (Symputsium International Security Symposium), kwararrun kariyar tiyata kuma suna da tattaunawa kan wannan batun. Don haka menene na musamman game da yanki mai tsayi?

Da farko, bari mu bincika manyan halayen yanayin yanayi na wurare masu tsayi:

  • low zafin jiki da canji mai sauƙi;
  • karancin iska ko […]
2903, 2019

Dukan Kariyar Hawan Doki - Me ya sa kuma Ta yaya


Tsaron Gidan Gida na Tsaron Kasa da Kariya na Tsaro

A yau, manufar kariyar dukkan gida ko kariya ta gida yana zama mafi shahara. Daya daga cikin mahimman dalilai shine cewa a yau akwai na'urori masu yawa da yawa masu tsada waɗanda suke da tsada sosai amma suna da wuyar shawo kan wutar lantarki. An kiyasta cewa gidan matsakaita ya ƙunshi fiye da dala 15000 na lantarki da kayayyakin lantarki waɗanda ba su da kariya daga kankara. Haɗarin kamuwa da cuta na yau da kullun na iya barin duk nau'ikan lantarki da na lantarki marasa amfani kuma wannan shine yanayin da baku taɓa taɓa dandanawa ba.

Don haka a cikin wannan labarin, za mu tattauna game da wannan batu: kiyaye kariya ta gida.

Me yasa muke buƙatar kariya ta kan gida?

Ruwa yana da hatsarin gaske ga kayan aikin gida. Idan kana zaune a yanki tare da saurin walƙiya mai sauƙi, ƙila ka rigaya ya sha wahala daga lalacewar da ta kawo. A nan ne labarun daga wadanda suka kamu biyu. Shin yana da kama da ku?

Yuli 2016 Mun ɗanɗana ikon saukar da wutar lantarki mako guda da suka gabata. Wutar mu (akwatin wutar lantarki an ƙone ta). Muryar da ke kewaye da mu ta ƙone, haka kuma mai karɓar tamu. Canji a kan wayoyin, […]

2703, 2019

Labarin Maɗaukakiyar Ƙarƙirar Lokacin da Zaɓi Na'urar Kariya ta Farko

Dukanmu mun san cewa ba sauki ba ne don zaɓar na'ura mai kariya ta dace. Sakamakon na'urar na'ura mai haɗuwa ba ta son saitin wayar da ta fi dacewa da fahimta ga mafi yawan mutane. Akwai rashin fahimta a yayin zabar SPD.

Ofaya daga cikin fahimtar na yau da kullun shine cewa mafi girman ƙarfin halin yanzu (wanda aka auna a cikin kA a kowane lokaci), mafi kyawun SPD. Amma da farko, bari mu gabatar da me muke nufi da karfin halin yanzu. Surge current a kowane sashi shine matsakaicin adadin matsin lamba wanda za'a iya rufewa (ta kowane bangare na na'urar) ba tare da gazawa ba kuma ya dogara ne akan ma'aunin IEEE 8 × 20 microsecond gwajin gwaji. Misali, idan mukayi magana game da 100kA SPD ko 200kA SPD. Muna nufin karfin halin da yake ciki yanzu.

Inganta halin yanzu shine ɗayan mahimman sigogi don SPD. Yana ba da daidaitattun don daidaita kayan aikin kariya na daban. Kuma masana'antun SPD ana buƙatar jera ƙarfin halin yanzu na SPDs. Kuma ga abokin ciniki, sun kuma fahimci cewa SPD shigar a sabis ƙofar ya kamata da girma karuwa halin yanzu iya aiki idan aka kwatanta da […]

2603, 2019

Ƙayyadewa na Kayan Kariya

Na'urar Kariya ta Farko Kaddarawa

A cikin wani labarin da ya gabata, mun gabatar da daya daga cikin samfurin na'urar kare kariya, watau, ta hanyar iri ko aji. Rubuta 1 / 2 / 3 shi ne mafi yawan SPD a cikin daidaitattun UL ko IEC. Zaka iya sake duba wannan labarin ta hanyar wannan mahaɗin:

Kuma a cikin wannan labarin, za mu yi magana game da sauran ƙididdiga wanda ba a gabatar da su a wannan labarin ba.

AC SPD & DC / PV SPD

A bayyane yake, AC SPD ya zama ruwan dare fiye da DC SPD kamar yadda dukkanmu muke rayuwa a cikin al'umma wanda yawancin samfuran wutar lantarki ke karɓuwa ta hanyar AC na yanzu godiya ga Thomas Edison. Wataƙila abin da yasa ka'idar IEC 61643-11 kawai ta dace da na'urar kariya ta AC na tsawon lokaci mai tsawo babu ƙayyadaddun ka'idojin IEC don na'urar kariya ta DC. DC SPD ya zama sananne kamar tashin masana'antar hasken rana kuma mutane sun lura cewa shigarwa na PV wani yanki ne wanda aka azabtar da walƙiya kamar yadda aka saba a fili ko kuma a saman rufin gidaje. Don haka buƙatar na'urorin kariya ta hanji don aikace-aikacen PV suna girma da sauri a cikin shekaru 10 da suka gabata. PV kansu shi ne ya fi na kowa […]

1403, 2019

Na'urar Kariyar Kiwo: Ƙaddamarwa Mafi Girma

Na'urar Kariya

Na'urar kariya ta farji (ko an rage ta kamar SPD) ba kayayyaki bane da jama'a suka sani. Jama'a na san cewa ingancin wutar lantarki babbar matsala ce a cikin al'ummarmu inda ake amfani da kayan lantarki ko kayayyakin lantarki. Sun san game da UPS wanda zai iya samar da wutar lantarki ba tare da tsayawa ba. Sun san mai ƙarfin lantarki wanda, kamar yadda sunan sa ya nuna, daidaita ko daidaita ƙarfin lantarki. Amma duk da haka mafi yawan mutane, suna jin daɗin lafiyar kayan aikin kariya na kariyar da aka kawo, ba su ma san kasancewarsa ba.

An gaya mana tun muna yara cewa yana kashe duk kayan lantarki yayin tsawa in ba haka ba walƙiya na iya tafiya cikin ginin kuma ya lalata kayan lantarki.

To, walƙiya yana da haɗari sosai kuma mai cutarwa. Ga wasu hotunan da ke nuna halaka.

Shafin wannan gabatarwar

To, wannan shine game da walƙiya. Ta yaya walƙiya ya danganta da na'urar kare kariya? A cikin wannan labarin, zamu bada cikakken gabatarwa akan wannan batu. Za mu gabatar da:

Tsarewar walƙiya VS Surge Protection: Related yet Daban-daban

Surge

  • Menene tsayi
  • Abin da ya faru ya faru
  • Sakamakon karuwa

Na'urar Tsaro (SPD)

  • definition
  • aiki
  • Aikace-aikace
  • Abubuwa: GDT, MOV, […]
1502, 2019

Yadda za a zabi na'urar kare kariya (SPD)?

Matakan Tsaro (SPD) ana amfani da su don kare kayan lantarki daga kange (overvoltages) da hasken walƙiya ko sauya kayan aiki masu nauyi (mutane da yawa zasu iya watsi da wannan). Yana iya ɗaukar wasu bayanan fasaha lokacin da zaɓin na'urar haɗi mai dacewa kamar yadda akwai fasahar zamani da ka'idoji.

Halin na IEC 61643 ya bayyana nau'ikan 3 nau'ikan na'urorin kare rayuka don tsarin lantarki mai low voltage.

Rubuta 1 ko Class I: Rubuta 1 SPD zai iya fitar da wutar lantarki mai ƙarfi kuma ana shigar da shi a cikin babbar wutar lantarki lokacin da aka killage ginin tareda tsarin tsabtace walƙiya (sandar walƙiya, mai hawa da ƙasa).

Rubuta 2 ko Class II: An tsara waɗannan na'urorin kare rayuka (SPD) don fitar da kayan aiki na yau da kullum ta hanyar hasken wutar lantarki wanda ya haifar da karuwa a kan hanyar sadarwa ta wutar lantarki. Yawancin lokaci, ana shigar da su a babban tashoshin rarraba. Rubuta 2 SPD su ne mashahuriyar SPD a kasuwar kuma Prosurge yana ba su takardun shaida daban-daban.

Rubuta 3 ko Class III: Rubuta 3 SPDs an tsara su don rage girman kan a tashoshin kayan aiki mai mahimmanci kuma saboda haka yana da iyakar iyakar iyakar iyawa ta halin yanzu.

A ina za a shigar SPD?

Rubuta na'urar tsaro ta 2 za a shigar a cikin […]