UMEHLUKO PHAKATHI KWESISHISHI ESIQAQAYO NESISHISHI SOMTHWALO

Abantu abaningi abaqondi ukuthi iswishi yokuhlukanisa kanye neswishi yokulayisha, izinhlobo ezimbili zeswishi zibhekwa njengezijwayelekile, zingashintshwa, kodwa kwezinye izikhathi azikwazi ukushintshwa, i-Kesu electromechanical xiaobian ikutshela ukuthi umehluko uyini phakathi kweswishi yokuhlukanisa kanye neswishi yokulayisha.

Iswishi yokuzihlukanisa ngokwayo ayinayo idivayisi yokucisha i-arc, inganqamula kuphela ugesi olinganiselwe, ngakho-ke ku-loop kuphela njengesici sokuzihlukanisa, esidinga ukulungiswa sizohlukaniswa nokunikezwa kwamandla nomthwalo.

Iswishi yokulayisha inedivayisi yokucisha i-arc ukuze inqamule ugesi wephutha, futhi ukuxhumana kwayo kungasetshenziswa njengeswishi yokuhlukanisa, enemisebenzi emibili yokuhlukanisa kanye nokuhlukanisa.
Amaswishi okulayisha ngokuvamile akhiwa ama-fuse kanye namaswishi okunqamula. Iswishi yokunqamula isetshenziselwa ukusebenza kwe-loop evamile, kanti i-fuse isetshenziselwa ukunqamula i-fault current ye-loop.

Isingeniso sokunqamula iswishi:

Iswishi yokuhlukanisa uhlobo lwedivayisi yokushintsha esetshenziswa kakhulu ukuhlukanisa ukunikezwa kwamandla, ukushintsha ukusebenza, ukuxhuma nokusika isekethe encane yamanje, ngaphandle komsebenzi wokucima i-arc.
Uma inkinobho yokuzihlukanisa isendaweni ehlukile, kuba nebanga lokuvikela phakathi koxhumana nabo ngokuhambisana nezidingo kanye nophawu lokunqamula olusobala;
Iswitshi esikwaziyo, uma sivaliwe, ukuthwala ugesi ngaphansi kwezimo ezijwayelekile zeluphu kanye nogesi ngaphansi kwezimo ezingavamile (isb. i-short circuit) isikhathi esithile.
Ngokuvamile isetshenziswa njengeswishi yokuhlukanisa amandla kagesi aphezulu, okungukuthi, i-voltage elinganisiwe ngaphezu kweswishi yokuhlukanisa engu-1kV, isimiso sayo sokusebenza kanye nesakhiwo kulula kakhulu, kodwa ngenxa yokusetshenziswa kwezidingo ezinkulu, zokuthembeka okuphezulu, isiteshi esincane, ukwakheka kwesitshalo samandla, ukusungulwa kanye nokusebenza okuphephile kwethonya kukhulu.
Isici esiyinhloko seswishi yokunqamula ukuthi ayinalo ikhono lokugoba futhi ingavula futhi ivale isekethe kuphela ngaphandle komthwalo wamanje.
Lesi sihloko sethula umsebenzi, izici, izinhlobo, izinhlelo zokusebenza, ukuthuthukiswa kokuvimbela amaphutha, ukulungiswa, izinkinga ezivamile zeswishi yokuzihlukanisa.

Isingeniso esifushane sokushintsha umthwalo:

Iswishi yomthwalo iyithuluzi lokushintsha phakathi kwe-circuit breaker kanye neswishi yokunqamula. Inedivayisi elula yokucisha i-arc, enganqamula i-load current elinganisiwe kanye ne-overload current ethile, kodwa ayikwazi ukunqamula i-short circuit current.
Ukuhlukaniswa kweswishi yomthwalo: ngokwendlela yokusebenzisa i-voltage kungahlukaniswa kube yi-swishi yomthwalo we-voltage ephezulu kanye neswishi yomthwalo we-voltage ephansi.
Amaswishi okulayisha asetshenziswa kakhulu ukuvula nokuvala i-load current, noma angasetshenziswa nama-fuse ane-voltage ephezulu esikhundleni sama-circuit breaker.
Ngenxa yokuthi kulula futhi inentengo efanelekile, iswishi yokulayisha isetshenziswa kabanzi ohlelweni lokusabalalisa lwe-10kV.
Ukukhetha okunengqondo kweswishi yomthwalo ekwakhiweni kubaluleke kakhulu ukuqinisekisa ukuphepha nokusebenza okuthembekile kwegridi yamandla.