Low voltage switchgear uye controlgear

Basic concepts:
Switchgear uye midziyo yekudzora ishoko rekutanga, iro rinosanganisira switchgear uye musanganiswa wayo neanobatsira kudzora, kuona, kudzivirira uye kugadzirisa zvishandiso.Inosanganisirawo kusanganiswa kwemidziyo yemagetsi nemidziyo ine wiring yemukati, midziyo yekubatsira, imba uye zvikamu zvinotsigira zvimiro.Switchgear inoshandiswa kugadzira magetsi, kutapurirana, kugovera uye magetsi ekushandura mabasa.Iyo midziyo yekudzora inoshandiswa pakubata basa rekushandisa simba rekushandisa.

Switchgear uye midziyo yekudzora inosanganisira matatu ekutanga pfungwa:

• kuiswa kwemurwere kwake ega
Nekuchengetedza, cheka magetsi emagetsi kana kupatsanura mudziyo kana chikamu chebhazi kubva kune yega yega magetsi kuti uite chikamu chega chemudziyo (semuenzaniso, kana zvichidikanwa kushanda pane kondakita mhenyu).Zvakadai semutoro switch, disconnector, circuit breaker ine yekuzviparadzanisa nevamwe, nezvimwe.

• control (on-off)
Nechinangwa chekushanda nekugadzirisa, batanidza kana kubvisa pasi pemamiriro ekushanda.Zvakadai senge contactor uye mota starter, switch, emergency switch, nezvimwe.

• kudzivirira
Kuti udzivise mamiriro asina kujairika etambo, zvishandiso uye vashandi, senge kuwandisa, kupfupika kwedunhu uye grounding kukanganisa, nzira yekubvisa kukanganisa ikozvino inoshandiswa kuparadzanisa kukanganisa.Zvakadai se: wedunhu breaker, chinja fuse boka, inodzivirira relay uye yekudzora mudziyo musanganiswa, nezvimwe.

Switchgear

1. Fuse:
Inonyanya kushandiswa sekudzivirira-pfupi-circuit.Kana dunhu rakapfupikiswa kana kuremerwa zvakanyanya, rinobva raita fuse uye kugura dunhu rekudzivirira.Iyo yakakamurwa kuva yakajairika mhando uye semiconductor yakakosha mhando.

2. Load switch / fuse switch (chinja fuse boka):
Mechanical switching zvishandiso zvinogona kubatanidza, kutakura uye kubvisa zvakajairwa ikozvino uye kutakura zvazvino pasi pemamiriro asina kujairika (aya ma switch haagone kubvisa abnormal short-circuit current)

3. Frame circuit breaker (ACB):
Iyo yakayerwa ikozvino ndeye 6300A;Rated voltage kusvika 1000V;Kuputsa simba kusvika ku150ka;Dziviriro kuburitswa ne microprocessor tekinoroji.

4. Molded case circuit breaker (MCCB):
Iyo yakayerwa ikozvino ndeye 3200A;Rated voltage kusvika 690V;Kuputsa simba kusvika ku200kA;Kuburitswa kwekudzivirira kunotora tekinoroji yemagetsi kana microprocessor tekinoroji.

5. Miniature circuit breaker (MCB)
Iyo yakayerwa ikozvino haina kupfuura 125A;Rated voltage kusvika 690V;Kuputsa simba kusvika ku50kA

6. Thermal electromagnetic protection release inogamuchirwa
Residual current (leakage) circuit breaker (rccb/rcbo) RCBO inowanzo umbwa neMCB uye zvakasara zvezvino midziyo.Chete diki redunhu redunhu rine yasara yekudzivirira ikozvino inonzi RCCB, uye yasara yazvino yekudzivirira mudziyo inonzi RCD.