Me ke nan da ake Fuses na Kirkiro Yawan Kafa?
Fuse wani aikin da ya yi aiki a zama aiki a kawo yawan karamin tsari bayan yake tafi mai kyau. Ana kategorize fuses a biyu na nisa: fuses masu hanyar karamin tsari mai yawa da fuses masu hanyar karamin tsari mai shi. Fuses masu hanyar karamin tsari mai shi ana zaune a biyu: fuses masu cikin gida ko fuses da ake iya sake fitowa, da fuses masu cikin karfi.
Fuses Masu Cikin Gida Ko Fuses Da Ake Iya Sake Fitowa
Fuses masu cikin gida, ko fuses da ake iya sake fitowa, ake kira a matsayin fuses masu kit-kat, suna da amfani sosai a matsayin fuses masu wiring masu gida da kuma fuses masu circuits masu karamin tsari mai shi. Wadannan fuses suna da base mai alfarin china da contacts masu cikakki, tun daga ma ake kara live wires. Fuse carrier, wanda yake da ita, zai iya sake kara zuwa ko karkashin base.
Element mai fuse yana da muhimmanci a zama a kan lead, tin, copper, ko a kan tin-lead alloy. Karamin tsari da ke bukatar don kare element mai fuse yana da muhimmanci yawanci waɗannan karamin tsari. Idan an amfani da elements masu fuse mafi yawa (da suka fi ɗaya ko biyu), za a ba su fagenen masu sauƙi. Factor mai de-rating ta element mai fuse yana cikin 0.7 zuwa 0.8. Idan yana samu fault, element mai fuse zai kare, zama a kawo yawan karamin tsari.
Idan element mai fuse yana kare, zai iya sake karkasha da wani element mai nauyi. Tun daga ma ake sake kara fuse zuwa base, za a iya sake kawo yawan karamin tsari. Fuses masu cikin gida suna da fa'idar sake karkasha element mai fuse da la'akari mai ƙarfin kasa.
Amma, fuses masu cikin gida suna da wasu matsaloli:
Fuses Masu Cikin Karfi Ko Cartridge Type Fuses
A fuses masu cikin karfi ko cartridge type fuses, element mai fuse yana cikin container mai karfi, da metal contacts suka haifar da shi. Ana zaune fuses wadannan a biyu: D-types da link types. Link type cartridge fuses ana zaune a knife blade ko bolted designs.
D - Types Cartridge Fuse
D - types cartridge fuses ba su iya sake kara. Muhimman components masu fuse wadannan sun hada da base mai fuse, adapter ring, cartridge, da cap mai fuse. Cartridge zai kara zuwa cap mai fuse, wanda ake kara zuwa base mai fuse. Element mai fuse zai kara zuwa tip mai base mai fuse, kawo yawan karamin tsari via fuse link.
Standard ratings masu fuses sun hada da 6, 16, 32, da 63 amperes. Tsarin kawo element masu fuse yana da 4kA don fuses 2A da 4A, da 16kA don fuses 6A ko 63A. Wani wannan nau'i na fuse bai da disadvantages, kuma yana da aiki mai yawan daidai.
Link Type Cartridge or High Rupturing Capacity (HRC) Fuses
Frame mai fuse yana da shirya steatite (a powdered mineral) ko ceramic materials, da ake zaba saboda mechanical strength masu yawan daidai. Brass caps suka haifar da element mai fuse a cikin body mai ceramic, fastened with specialized force don yanke high internal pressure a lokacin fault conditions.
End contacts suka kara zuwa metallic caps, don inganta electrical connectivity mai yawan daidai. Space bayan element mai fuse da body mai cartridge an fitowa da quartz powder, wanda yake da arc-extinguishing medium. Wani powder yana juye heat wanda yake faru saboda short-circuit currents, converting into a high-resistance state wanda yake yanke restriking voltage da kuma quench arcs, enhancing rupturing capability and reliability masu fuse.
Element mai fuse yana da shirya silver ko copper da kuma connected via a tin joint, wanda yake regulate temperature mai fuse a lokacin short-circuit events. Silver yana da melting point 980°C, amma tin yana da melting point 240°C. A lokacin system fault, short-circuit current zai kara zuwa tin joint, wanda yake restrict current flow through the silver element.
Fusing factor ta link fuse yana da 1.45, amma wasu specialized fuses suka da fusing factor 1.2. Common types include knife-blade and bolted designs.
