Abahanga mu by'amashanyarazi benshi batekereza ko fuse ari ibikoresho byo kurinda bishaje, mu gihe DC circuit breakers ari ibikoresho byo kurinda bigezweho. Ese iki gitekerezo ni cyo?
Bigaragara ko umurongo uhindagurika mu miterere y’igihe n’igihe wa fiyuzi uri hafi y’umurongo usesengura imiterere y’ubushobozi bwo kwiga ubushyuhe bw’urusobe rw’akazi rurinzwe, bigaragaza ko rufite ingaruka nziza zo kurinda umuvuduko mwinshi, ariko ikoreshwa ryarwo ntiryoroshye nk’urusobe rw’amashanyarazi rwa DC. Iyo umuyoboro ugabanya umuvuduko w’amashanyarazi wa DC ucitse bitewe n’umuvuduko mwinshi w’amashanyarazi, ushobora gufungwa kugira ngo utange ingufu nyuma yo gukemura ibibazo, ibyo bikaba byoroshye cyane kandi byoroshye. Fiyuzi igomba gusimbuzwa igihe hamwe n’imiterere imwe ya fiyuzi, bityo bikaba ngombwa gutanga ibice bitandukanye by’inyongera bifite imiterere itandukanye, ibyo bikaba bitera ikibazo gikomeye ku mukoresha.
Insinga za fuse nazo zigomba kwitabwaho cyane. Urugero, igice cyo hagati cya fuse ya screw kigomba kuba gifatanye n'uruhande rw'amashanyarazi, naho igice cyo hejuru kigomba kuba gifatanye n'uruhande rw'umutwaro. Bitabaye ibyo, biroroshye guteza impanuka y'amashanyarazi iyo fuse isimbuwe.
Ariko, muri iki gihe, mu bijyanye no gushushanya ibidukikije mu gihugu cyacu, zimwe mu nganda zikora, inyubako z'ibiro n'izindi sisitemu zo gukwirakwiza ingufu zicungwa n'inzobere mu by'amashanyarazi (abakozi ba BA4 na BA5, reba Umugereka C) bakoresha cyane cyane imiyoboro ya DC circuit breakers. Ni bake bakeneye gukoresha firigo, ariko mu bindi bihugu byateye imbere mu bukungu, ikoreshwa ry'ubwo bwoko bubiri bw'ibikoresho by'amashanyarazi ni hafi kimwe cya kabiri.
Nkuko twese tubizi, igiciro cya DC circuit breaker kiri hejuru cyane ugereranyije n'ubushobozi bunini bw'umurongo mukuru, mu gihe fuse ifite umuvuduko muto nka 30 ishobora guca umuvuduko muto wa kilometero 50, kandi ikiguzi cyo gusimbuza fuse ni gito cyane. Byongeye kandi, nyuma yo kuzimya DC circuit breaker, ubushobozi bwo kuziba bw'aho contacts buguma buhinduka nyuma yo gusimbuza indi nshya. Muri urwo rwego, byaba byiza gukata short circuit ukoresheje fuse.
Byongeye kandi, iyo itandukaniro ry’urwego rw’ubushyuhe bwa buri fuse hakurikijwe ibipimo ngenderwaho by’ibicuruzwa (ni ukuvuga, umuvuduko w’ubushyuhe utemewe niba ari santimetero 1.25, n’umuvuduko w’ubushyuhe utemewe niba ari santimetero 1.6) ari inshuro 1.6, ibipimo ngenderwaho by’ibicuruzwa bigaragaza urwego rwose rwa fuse. Guhitamo kwayo bishobora kwemezwa iyo ikoreshejwe nk’uburinzi bw’ubushyuhe bwinshi, ariko biragoye kugera ku bigabanya umuvuduko wa DC. Mu yandi magambo, fuse zifite uburyo bwiza bwo guhitamo hagati y’urwego rwo kurinda ubushyuhe bwinshi, bishobora kugabanya ubuso bw’ibura ry’amashanyarazi mu gihe cyo kurinda ubushyuhe bwinshi.
