IIMPAWU EZISIXHENXE ZE-ZINC OXIDE ARRESTER

1. Umthamo wokuhamba kwamanzi

Oku kubonakala kakhulu kubuchule be-arrester bokufunxa ii-overvoltages ezahlukeneyo zombane, ii-overvoltages ze-power frequency transient frequency, kunye nee-overvoltages ezisebenzayo.

2. Iimpawu zokhuseleko

I-Zinc oxide arrester yimveliso yombane esetyenziselwa ukukhusela izixhobo ezahlukeneyo zombane kwinkqubo yamandla kumonakalo we-overvoltage, kwaye isebenza kakuhle ekukhuseleni. Ngenxa yokuba iimpawu ze-volt-ampere ezingezizo ezikwi-zinc oxide valve plate zilungile kakhulu, zimbalwa kuphela ii-microampere zamandla zamandla ezinokudlula phantsi kwe-voltage eqhelekileyo yokusebenza, nto leyo elula ukuyila isakhiwo esingenamsantsa, ukuze sibe nokusebenza kakuhle kokukhusela, ubunzima obuphantsi kunye nobukhulu obuncinci. Xa i-overvoltage ihlasela, i-current ehamba kwi-valve plate iyanda ngokukhawuleza, kwaye kwangaxeshanye, ubukhulu be-overvoltage buncitshisiwe, kwaye amandla e-overvoltage ayakhululwa. Emva koko, i-zinc oxide valve plate ibuyela kwimeko yokuxhathisa okuphezulu, ukuze inkqubo yamandla isebenze ngokuqhelekileyo.

3. Ukusebenza kokutywina

Into yokubamba isetyenziswa yijakethi edityanisiweyo esemgangathweni ophezulu esebenza kakuhle kwaye inamandla okugcina umoya uqinile. Amanyathelo anjengokulawula ukucinezelwa kweringi yokutywina kunye nokongeza i-sealant ayasetyenziswa. Ijakethi yeseramikhi isetyenziswa njengesixhobo sokutywina ukuqinisekisa ukutywina okuthembekileyo kunye nokusebenza okuzinzileyo kwe-armender.

4. Iimpawu zoomatshini

Ezi zinto zintathu zilandelayo ziqwalaselwa kakhulu: amandla okushukuma komhlaba ekufuneka anyanyezelwe; uxinzelelo lomoya oluphezulu olusebenza kwi-arrester; amandla okuxinana aphezulu avumelekileyo entambo ephezu kwe-arrester.

5. Ukusebenza kokucoca

Isithinteli se-zinc oxide esingenazikhewu sinokumelana okuphezulu kokungcola.

Umlinganiselo we-creepage ochazwe ngumgangatho wesizwe ngulo: Udidi lwesibini indawo yongcoliseko oluphakathi: umlinganiselo we-creepage 20mm/kv; Udidi lwesithathu indawo yongcoliseko olunzima: umlinganiselo we-creepage 25mm/kv; Udidi lwesine indawo yongcoliseko olunzima: umlinganiselo we-creepage 31mm/kv.

6. Ukuthembeka okuphezulu kokusebenza

Ukuthembeka kokusebenza kwexesha elide kuxhomekeke kumgangatho wemveliso kunye nokuba ukukhethwa kwemveliso kufanelekile na. Umgangatho wemveliso oyichaphazelayo ikakhulu unale mibandela mithathu ilandelayo: ukuqonda kwesakhiwo siphela se-arrester; iimpawu ze-volt-ampere kunye neempawu zokulwa nokwaluphala kwepleyiti yevalvu ye-zinc oxide; ukusebenza kokutywina kwe-arrester.

7. Ukunyamezelana kwamaza ombane

Ngenxa yezizathu ezahlukeneyo kwinkqubo yamandla, ezinje ngokumisa isiseko sesigaba esinye, isiphumo somthamo wexesha elide kunye nokwaliwa komthwalo, i-voltage ye-frequency yamandla iya kunyuka okanye i-overvoltage yesikhashana ene-amplitude ephezulu iya kuveliswa. I-arrester inako ukumelana ne-frequency yamandla athile ngaphakathi kwexesha elithile. Amandla okunyusa i-voltage.