IZICI EZIYISIKHOMBISA ZESITHATHI SEZINC OXIDE

1. Umthamo wokugeleza

Lokhu kubonakala kakhulu ekhonweni le-arter lokumunca ama-overvoltage ahlukahlukene ombani, ama-overvoltage esikhashana aphindaphindwayo emvamisa yamandla, kanye nama-overvoltage asebenzayo.

2. Izici zokuvikela

I-Zinc oxide arrester iwumkhiqizo kagesi osetshenziselwa ukuvikela imishini kagesi ehlukahlukene ohlelweni lwamandla ekulimaleni kwe-overvoltage, futhi isebenza kahle ekuvikeleni. Ngenxa yokuthi izici ze-volt-ampere ezingezona eziqondile zepuleti le-valve le-zinc oxide zinhle kakhulu, ama-microampere ambalwa kuphela wamanje angadlula ngaphansi kwe-voltage evamile yokusebenza, okulula ukuklama isakhiwo esingenazikhala, ukuze sibe nokusebenza okuhle kokuvikela, isisindo esincane kanye nesici esincane sosayizi. Lapho i-overvoltage ihlasela, ugesi ogeleza ngepuleti le-valve uyanda ngokushesha, futhi ngasikhathi sinye, ubukhulu be-overvoltage bunqunyelwe, futhi amandla e-overvoltage ayakhishwa. Ngemuva kwalokho, ipuleti le-valve le-zinc oxide libuyela esimweni sokumelana okuphezulu, ukuze uhlelo lwamandla lusebenze ngokujwayelekile.

3. Ukusebenza kokuvala

Isici sokumisa samukela ijakethi ehlanganisiwe yekhwalithi ephezulu esebenza kahle ngokuguga kanye nokuqina komoya okuhle. Izindlela ezifana nokulawula ukucindezelwa kwendandatho yokuvala kanye nokufaka i-sealant ziyasetshenziswa. Ijakethi ye-ceramic isetshenziswa njengento yokuvala ukuqinisekisa ukuvala okuthembekile kanye nokusebenza okuzinzile kwe-rearter.

4. Izakhiwo zemishini

Izici ezintathu ezilandelayo zicatshangelwa kakhulu: amandla okuzamazama komhlaba okufanele abekezelelwe; ingcindezi yomoya ephezulu esebenza ku-arrester; amandla aphezulu okudonswa kwentambo phezulu kwe-arrester.

5. Ukusebenza kokuhlanza

Isivikelo se-zinc oxide esingenazikhala sinamandla aphezulu okumelana nokungcola.

Isilinganiso sokuhamba esichazwe yizinga likazwelonke yilesi: Indawo yokungcola okuphakathi kweSigaba II: isilinganiso sokuhamba esinama-creepage esingu-20mm/kv; Indawo yokungcola okunamandla yeSigaba III: isilinganiso sokuhamba esinama-creepage esingu-25mm/kv; Indawo yokungcola okunamandla kakhulu yeSigaba IV: isilinganiso sokuhamba esinama-creepage esingu-31mm/kv.

6. Ukuthembeka okuphezulu kokusebenza

Ukuthembeka kokusebenza kwesikhathi eside kuncike kwikhwalithi yomkhiqizo nokuthi ukukhethwa komkhiqizo kuyafaneleka yini. Ikhwalithi yomkhiqizo ewuthintayo inezici ezintathu ezilandelayo: ukuqonda kwesakhiwo sonke se-arrester; izici ze-volt-ampere kanye nezici zokulwa nokuguga kwepuleti le-valve ye-zinc oxide; ukusebenza kokuvala kwe-arrester.

7. Ukubekezelelana kwemvamisa yamandla

Ngenxa yezizathu ezahlukahlukene ohlelweni lwamandla, njengokufakwa kwesisekelo kwesigaba esisodwa, umphumela we-capacitance yomugqa omude kanye nokwenqatshwa komthwalo, i-voltage yemvamisa yamandla izokhuphuka noma kuzokhiqizwa i-overvoltage yesikhashana ene-amplitude ephezulu. I-arrester inekhono lokubekezelela imvamisa yamandla ethile ngaphakathi kwesikhathi esithile. Amandla okukhulisa i-voltage.