Me kowane ne daga cikin Fuses?
Fuse da duka cikin yana nufin kowane?
Fuse wani wurare da ke tattara jirgin ruwa. Idan karkashin ruwa ya zama da yawa, fuse ke tattara jirgin ruwa ta hanyar kafurta elementin fuse, don haka an kusa kai wurare da take sauke da jirgin ruwa na gaba. Fuse suna faɗa biyu ne kamar hanyar tasiri mai girma: AC fuses da DC fuses. Duk da cewa babban fasahar fuses ana nuna a hoton da aka baka zuwa.
DC Fuse
DC fuse yana aiki don tattara jirgin ruwa idan karkashin ruwa ya zama da yawa. Amma, muhimman abu da ba a da shi a DC fuses shine kafurta arc da ke faruwa saboda direct current. Saboda ba a kasance natural zero-current crossings a cikin jirgin ruwa na DC, kamar yadda ake iya a cikin jirgin ruwa na AC, kafurta arc yana zama da yawa. Don haɓaka wannan, an koye electrodes a cikin DC fuse a matsayin yanayi da yawa. Saboda haka, tushen DC fuse yana zama da yawa ciki da AC fuse da rating sama.
AC Fuses
AC fuses suka faɗa biyu ne: low-voltage fuses da high-voltage fuses. Karkashin ruwa na AC fuses yana da frequency wanda ke taimaka amfani a kan 0º zuwa 60º a cikin shekara biyu. Ingantaccen AC yana taimaka don kafurta arc a cikin jirgin ruwa na AC da yawa ciki da jirgin ruwa na DC.
Low-voltage fuses zai iya faɗa zuwa faɗo biyar, kamar yadda ake nuna a hoton da aka baka zuwa. Semi-enclosed ko rewirable fuses, tare da totally enclosed ko cartridge-type fuses, su ne mafi yawan amfani a cikin fuses.
Rewirable Fuses
Rewirable fuses ana amfani da su a cikin jirgin ruwa masu karfi biyu, kamar yadda ake amfani a cikin wiring na gidaje. Rewirable fuse yana da duk biyu na main components: fuse case da fuse carrier. Base na fuse, wanda ake yi daga porcelain, yana da rikitar da ke buga fuse wires. Wadannan wires zai iya yi daga materials kamar lead, tinned copper, aluminium, ko tin-lead alloy. Muhimman abubuwan renuwa fuse shine ina iya fi fuse carrier ka ci gaba da kuma kai base ita bayan sanarwa. Wannan inganci yana taimaka don kawo karamin karamin wire idan ya kafarta saboda karkashin ruwa mai yawa, kuma yana ba da kyau a cikin electrical systems na gidaje inda simplicity da kuma koyarwa suka fi zama muhimmanci.
Totally Enclosed or Cartridge Type Fuses
A cikin totally enclosed ko cartridge type fuses, elementin fuse yana da encasing daidai a cikin container, tare da metal contacts wajen farkon biyu. Wadannan fuses zai iya faɗa zuwa faɗo biyu: D-type cartridge fuses da Link-type cartridge fuses. Kowane subtype yana da design da characteristics masu yawa, wadanda ana taimaka don applications da electrical requirements masu yawa. Enclosed structure na fuses na yake taimaka don protection da yawa against environmental factors da accidental contact, kuma yana ba da kyau a cikin electrical systems masu yawa inda safety da kuma reliability suka fi zama muhimmanci.
D-Type Cartridge Fuses
Key components na D-type cartridge fuse sun hada da base, adapter ring, cartridge, da fuse cap. Cartridge yana ji a cikin fuse cap, da fuse cap yana da shiga da fuse base. Idan cartridge ya shiga da base, tip na cartridge yana da shiga da conductor, don haka an kasa jirgin ruwa via fuse links. Wannan design yana taimaka don installation da kuma replacement da daidai, tare da taimaka don efficient electrical connection da protection a cikin jirgin ruwa.
Link Type Cartridge or High Rupturing Capacity (HRC) Fuses
A cikin link type cartridge ko HRC fuses, elementin fuse yana da design da ke taimaka don carry fault current da yawa. Idan fault yana daɗi, elementin fuse zai kafarta, don haka an tattara jirgin ruwa da kafurta karkashin ruwa. Muhimman abubuwan HRC fuses shine in suke clear both low da high fault currents. Wannan yana taimaka don reliable protection a cikin electrical systems daga abnormal current conditions daban-daban.
HRC fuses suna da high-speed operation. Su na da minimal maintenance, wanda yana ba da kyau a cikin many applications. Amma, ba a nan daɗi, elementin fuse na HRC fuses yana buƙata da shiga. Kuma a faults, wadannan fuses suna yi heat, wanda yana iya taimaka don kafurta operation na switches da ke ke gaba.
Enclosure na HRC fuse yana da powdered pure quartz, wanda yana da effective arc-extinction medium. Fuse wire na HRC fuses yana da silver da copper. Wadannan fuse wire suna da two or more sections wanda suka shiga da tin-joint. Tin-joint yana taimaka don reduce temperature under overloaded conditions, don haka in taimaka don overall performance da durability na fuse.
Don increase breaking capacity na fuses, two or more silver wires suna shiga da parallel. Wadannan wires suna da arrangement wanda akwai wire mafi yawan da za'a kafarta a lokacin. HRC fuses ne biyu
Knife Blade Type Switches
A cikin knife blade type switches, replacement na fuse wire a cikin live circuit yana da taimaka da fuse puller. Wannan tool yana taimaka don safe removal da substitution na fuse wire bayan sanarwa, don haka in taimaka don reduce risk of electric shock. Bolted type HRC fuses, on the other hand, suna da two conducting plates wanda suka shiga da fuse base. Amma, idan kana kai wani type na fuse switch, additional safety circuit yana buƙata don prevent user from receiving electric shock. Wannan extra circuit yana taimaka don isolate electrical current daidai idan kana kai switch.
Dropout Fuse
Dropout fuse yana aiki a cikin waya. Idan elementin fuse ya kafarta saboda karkashin ruwa mai yawa, yana dropout under the influence of gravity around its lower support. Wannan characteristic yana taimaka don dropout fuses da yawa a cikin protection na outdoor transformers. A cikin environment na outdoor, inda transformers suka da exposure to various weather conditions da potential electrical faults, dropout fuse yana taimaka don quickly and effectively isolate faulty component, don haka in taimaka don protect transformer da overall electrical system.
Striker Fuse
Striker fuse wani mechanical device wanda yana da sufficient force da displacement capabilities. Wannan yana taimaka don use for closing tripping ko indicator circuits. Idan fault ya faru a cikin electrical system, striker fuse zai iya trigger, da mechanical action yana taimaka don close relevant tripping circuit, don haka in taimaka don disconnect power supply da kuma protect system. Kuma yana iya activate indicator circuit don signal occurrence of fault, don haka in taimaka don important visual ko audible indication for maintenance personnel.
Switch Fuse
Switch fuses suna da design don use a cikin low- and medium-voltage circuits. Fuse units a cikin wadannan switches suna da ratings da dama 30, 60, 100, 200, 400, 600, da 800 amperes. Suna da 3-pole da 4-pole configurations, tare da flexibility a cikin different electrical setups. Making capacity na fuses yana iya reach up to 46 kA. Depending on their rating, they are capable of safely breaking currents that are approximately 3 times the load current. Wannan yana taimaka don switch fuses da reliable components for protecting electrical circuits from overcurrents da short-circuits a cikin low-to-medium voltage applications.
High Voltage HRC Fuses
Muhimman abu da high-voltage fuses suka da face shine issue of corona. Corona yana faru idan electrical field strength around a conductor yana da yawa da ke ionize surrounding air, don haka in taimaka don discharge. Don address this problem, high-voltage fuses suna da special features. Wadannan fuses suna faɗa zuwa three types, kowane type tailored to meet specific requirements of high-voltage applications while minimizing effects of corona da ensuring reliable performance.
Cartridge Type HV HRC Fuse
A cikin cartridge-type high-voltage (HV) high-rupturing capacity (HRC) fuse, elementin fuse yana wind a helical shape. Wannan design yana taimaka don mitigate corona effect a high voltages. Fuse yana da two parallel-arranged fused elements: one with low resistance da the other with high resistance. Under normal operating conditions, low-resistance wire yana carry normal current. Amma, during a fault, it is the first to blow, reducing short-circuit current. This sequential operation helps in safeguarding the electrical system by quickly limiting excessive current flow.
Liquid Type HV HRC Fuse
Liquid-type HV HRC fuses suna da carbon tetrachloride da sealed caps a farkon biyu. Idan fault ya faru da karkashin ruwa ya zama da yawa, elementin fuse zai kafarta da kafurta. Carbon tetrachloride liquid a cikin fuse yana da efficient arc-extinguishing medium for HRC fuses. Wadannan fuses suna da applications a cikin transformer protection da providing backup protection for circuit breakers. Their ability to rapidly quench arcs yana taimaka don them reliable components a cikin high-voltage electrical setups.
Expulsion Type HV Fuse
Expulsion-type fuses suna da popular use for feeder da transformer protection saboda cost-effectiveness. Su ne typically designed for 11 kV systems da rupturing capacity of up to 250 MVA. Wani type na fuse yana da hollow, open-ended tube made of synthetic resin-bonded paper. Fuse elements suna shiga a tubes, da tube ends suna shiga da appropriate fittings. Idan arc ya faru, ita yana da taimaka don inner coating of the tube. Gases produced during this process yana taimaka don extinguish arc, don haka in taimaka don protect electrical system from over-current conditions.
