Konstrakshi na AC Energy Meter
Kirkiyoyi kashi suna cikin abubuwan da suka fi sani don kaddamar kashi. Ana amfani da su duka, ba a gaba wadanda suke kaddamar ko kadan. Sunan mafi yawan kawo kuna da ita ce kirkiyar watt-hour. A nan zan iya bayarwa kimiya da yanayin aiki na kirkiyar induction type energy meter.
Don in fahimtar kimiya na kirkiyar watt-hour, ya kamata a fahimta abubuwa uku na kirkiya. Wannan abubuwan ne su ne:
Sistemun karkashin
Sistemun kudukudukan
Sistemun kudukudukan
Sistemun kiran kudukudukan
Sistemun Karkashin
Abubuwan da suka cikin wannan sistemune su ne waɗannan electromagnets da ake laminated da silicon steel. An kira electromagnet na fagen shunt magnet, kuma akwai voltage coil da ke sauran manyan turns da wire mai kadan. Electromagnet na tsohuwa an kira series magnet, kuma akwai current coils da ke sauran ƙarin turns da wire mai tsakiya. Current coils suna haɗa da circuit da kuma current ta load yana hauƙar da su.
Voltage coil yana haɗa da supply mains da kuma yake samun yawan inductance zuwa resistance. Akwai bands da copper a tsofaffin shunt magnet wanda ke bayarwa frictional compensation don haka za ta ƙaramin phase angle da ke bayarwa flux ta shunt magnet da supply voltage ta 90o.
Sistemun Kudukudukan
Idan kana bincika a figure, akwai disk mai aluminum mai kadan da ake sa a wurin bayan electromagnets biyu da ake mounta a shaft mai tsaye. Eddy currents suna haɗa kan disk mai aluminum idan ya kare flux da aka samu daga electromagnets biyu. Tabbas interference da eddy currents da magnetic fields biyu suna haɗa kan torque mai kudukudukan a disk. Idan kana fara kaddamar kashi, disk yana kusa kudukudu, kuma kudukudukan da aka kara suke kiran kashi da aka kaddamar a lokacinin da ya kasa. Yanzu ana kiran shi a kilowatt-hours.
Sistemun Kudukudukan
Abubuwan da suka cikin wannan sistemune sun ne permanent magnet da ake kira brake magnet. Ya kiyasin disk don haka eddy currents suna haɗa kan disk saboda kudukudukan da disk ya yi a magnetic field. Wannan eddy current yana haɗa kan flux da kuma yake samun braking torque wanda yake ƙaramin motion ta disk. Zan iya kontrola speed ta disk ta bayarwa flux.
Sistemun Kiran Kudukudukan
Daga sunan, ya kiran kudukudukan disk da ke proportional da energy da aka kaddamar a kilowatt-hour. Akwai spindle da ake sa disk da ake drive a gear a disk shaft da kuma yake kiran kudukudukan da disk ya yi.
Yanayin Aiki na Kirkiyar Kashi
Aiki na single phase induction type kirkiyoyi kashi suna cikin fundamentals biyu:
Rotation of aluminum disk.
Arrangement of counting and displaying the amount of energy consumed.
Kudukudukan Disk Mai Aluminum
Kudukudukan disk mai metal ya karkashin biyu coils. Duk da biyu coils suna cikin arrangement da zai iya samun magnetic field da ke proportional da voltage da kuma zai iya samun magnetic field da ke proportional da current. Field da voltage coil ta samu yana ƙaramin 90o don haka eddy current suna haɗa kan disk. Force da aka samu kan disk daga biyu fields yana proportional da product da immediate current da voltage a coils.
Tabbas, disk mai aluminum mai kadan yana kudukudu a air gap. Amma, ya kamata a stop disk idan ba a gaba supply ba. Permanent magnet yana aiki a matsayin brake wanda yake ƙaramin kudukudukan disk da kuma yake balance speed ta kudukudukan da kasha kaddamar kashi.
Arrangement of Counting and Displaying the Energy Consumed
A cikin wannan sistemune, kudukudukan disk mai floating ya kiran da kuma yana kiran a window na meter. Disk mai aluminum ya haɗa da spindle wanda ake sa gear. Gear yana drive register da kuma revolution ta disk ya kiran da kuma yana kiran a register wanda akwai series of dials da kuma har da dial yana represent digit. Akwai small display window a front na meter wanda yana kiran reading na energy da aka kaddamar a help of dials. Akwai copper shading ring a central limb ta shunt magnet. Don haka za ta ƙaramin phase angle bayarwa flux da shunt magnet da supply voltage ta 900, ya kamata small adjustments a place of the ring.
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