Principle of Operation na Earth Leakage Circuit Breaker ELCB | Voltage da Current ELCB | RCCB

Earth Leakage Circuit Breaker ko ELCB

ELCB (Earth-leakage circuit breaker) yana daya daga cikin wurare na hankali da ake amfani da su a tashar karamin lamarin (kamar karkashin gida da kuma kasuwanci) don in ba ci nasara. Wannan wurari ya shafi tsawon voltaji mai girma a cikin kayayyakin karamin lamarin, kuma ya koyi wata idan ana samun voltaji mai yawa.

ELCBs sun taimaka wajen neman shugaban ruwa da kuma nasarorin kayayyaki a wurare na karamin lamarin wadanda za su iya haifar da nasara a kan mutum da ya kama a wata wata.

Akwai abubuwa biyu na ELCB - voltage ELCB da kuma current ELCB.

Voltage Earth Leakage Circuit Breaker

Yadda ake yi ELCB ta voltaji yana da kyau. Daya daga terminal na relay coil an fi sanya zuwa kayayyakin kayan aiki da ake bincika bayan nasara, kuma terminal na biyu an fi sanya zuwa arziki.

Idan akwai nasarar kayayyaki ko live phase wire ya sa kayayyakin kayan aiki, ya zama akwai fasaloli na voltaji a cikin terminal na coil da ake sanya zuwa kayayyakin kayan aiki da arziki. Wannan fasaloli na voltaji ya faɗa shugaban ruwa zuwa coil.

Idan fasalolin voltaji ya kai ƙarin da aka ƙwarewa, shugaban ruwa zuwa relay ya zama da ma'adan da ya iya karɓar relay don koyi circuit breaker a cikin zuwa kayan aiki.

Karakarren wannan wurari shine, ya iya neman da kuma daidaita kayan aiki ko kayan aiki da ake sanya zuwa shi. Ba zan iya neman nasarorin kayayyaki a wasu ƙasashen ƙasar. Amsa Electrical MCQs don sanin cewa masu inganci game da yadda ELCBs ke yi aiki.

Current ELCB ko Residual Current Circuit Breaker (RCCB)

Yadda ake yi current earth leakage circuit breaker ko RCCB yana da kyau kamar ELCB ta voltaji, amma al'adun da ake yi yana da ƙarin da ELCB ta current yana da ma'adan da ya iya neman da kuma daidaita.

Duk da cewa akwai abubuwa biyu na ELCB, amma annan yadda ake amfani da ELCB ta voltaji ake kira ELCB na musamman. Kuma ELCB ta current ake kira RCD ko RCCB. Hakan an fi sanya CT (Current Transformer) core zuwa phase wire da kuma neutral wire.

Single Phase Residual Current ELCB. Tushen winding na phase da neutral winding a cikin core ita ce, a lokacin da aka fara, mmf na biyu ya shiga mmf na uku.

Akwai ƙarin bayanai, a lokacin da aka fara, shugaban ruwa zuwa phase wire ya koma zuwa neutral wire idan ba a ka nasara a kan ƙarin.

Saboda haka, saboda shugaban ruwa na biyu ana da muhimmanci, mmf na resulta ya zama zero - ideal.

Relay coil an fi sanya zuwa winding uku a cikin CT core a matsayin secondary. Terminal na winding ita an sanya zuwa system na relay.

A lokacin da aka fara, ba za a iya samun shugaban ruwa a cikin winding uku saboda ba a ka flux a cikin core saboda shugaban ruwa na phase da neutral.

Idan akwai nasara a cikin kayan aiki, ya zama part of phase current ya koma zuwa arziki, a nan nasarorin kayayyaki.

Saboda haka, misalai shugaban ruwa na neutral zuwa RCCB ba ce shugaban ruwa na phase.

Three Phase Residual Current Circuit Breaker ko Current ELCB. Idan wannan farko ya kai ƙarin da aka ƙwarewa, shugaban ruwa zuwa winding uku a cikin core ya zama da ma'adan da ya iya karɓar electromagnetic relay da ake sanya zuwa shi.

Wannan relay ya faɗa koyi circuit breaker zuwa kayan aiki.

Residual current circuit breaker yana iya a kira residual current device (RCD) idan muna ƙarƙashin circuit breaker da ake sanya zuwa RCCB. Yana nufin, duk ƙasashe na RCCB sai circuit breaker suna kira RCD.

Bayani: Yara da takardun bayanai suna da muhimmanci, bayanai masu daidai suna da muhimmanci don kunna, idane akwai nasarorin bayanai zaka iya tabbatar da zaka canza.