Hunhu hwemafuyusi

Zvinhu zvikuru zvefuse

1) Mushure mekunge gomba raputika, fuse inofanira kutsiviwa.

2) Basa rekudzivirira ibasa rimwe chete, rine hunhu humwe chete hwe overcurrent inverse time, hunoshandiswa pakudzivirira overload, short circuit uye ground fault.

3) Kana fuse yechikamu chimwe chete yaitika, mota yechikamu chimwe chete inokonzera mhedzisiro yakaipa yekushanda kwechikamu chimwe chete. Ehe, fuse ine chiratidzo chekunyevera inogona kushandiswa kutsiva, uye fuse yechikamu chimwe chete inogona kubvisa chikamu chimwe chete chechikamu.

4) Remote control haigone kuonekwa, uye inofanira kusanganiswa ne electric banga switch ne switch.

Hunhu hweFuse

Kushanda kwefuse kunoonekwa nekunyunguduka kwekunyunguduka. Fuse ine hunhu hwakajeka, kureva hunhu hweampere-second. Kune iyo melt, hunhu hwayo hwekushanda uye hunhu hwenguva yekushanda hunhu hweampere-second hwefuse, hunonziwo hunhu hweinverse time delay, ndiko kuti: kana overload current iri diki, nguva yekubatanidza yakareba; kana overload current yakakura, nguva yekubatanidza ipfupi.

Kuti tinzwisise hunhu hwe ampere-second, tinogona kuona kubva mumutemo waJoule kuti mu series circuit, R value yefuse haina kuchinja zvachose, uye calorific value inoenderana ne square ye current I, uye inoenderana nenguva yekupisa T, ndiko kuti: kana current Kana yakakura, nguva inodiwa kuti melt iputike ipfupi. Kana current iri diki, nguva inodiwa kuti melt iputike yakareba, uye kunyangwe kana speed yekupisa iri pasi pe rate ye thermal diffusion, tembiricha yefuse haizokwire kusvika pakunyunguduka, uye fuse haizomboputi. Saka, mukati meimwe overload current range, kana current yadzoka kune yakajairika, fuse haizoputike uye inogona kuramba ichishandiswa.

Saka, kunyunguduka kwega kwega kune simba rekunyunguduka risingapfuure. Zvichienderana nekupisa kwakasiyana, simba rekunyunguduka risingapfuure rakasiyanawo. Kunyangwe simba rekunyunguduka richikanganiswa nemamiriro ekunze, rinogona kufuratirwa mukushandiswa kwaro. Kazhinji, chiyero chesimba rekunyunguduka risingapfuure rekunyunguduka kune simba rekunyunguduka risingapfuure ndiro simba rekunyunguduka risingapfuure. Simba rekunyunguduka risingapfuure 1.25, kureva kuti, kunyunguduka nesimba rekunyunguduka risingapfuure 10 amps hakuzosangani kana simba riri pasi pe12.5 amps.

Zvinogona kuonekwa kubva pane izvi kuti mashandiro ekudzivirira fuse padanho repfupi akanaka kwazvo, uye mashandiro ekudzivirira overload ari pakati nepakati. Kana zvichidikanwa chaizvo kuishandisa mukudzivirira overload, zvinodikanwa kunyatsoenzanisa line overload current ne rated current yefuse. Semuenzaniso: 8-amp melt inoshandiswa mu 10-amp circuit yekudzivirira short-circuit nekudzivirira overload, asi hunhu hwekudzivirira overload panguva ino hahuna kunaka.