Zeziphi izincedisi ezisetyenziswa nge epoxy glass fiber ilaphu ibhodi?

Ukuthembeka kunye nobomi benkonzo yokusebenza kwe-winding kuxhomekeke kumlinganiselo omkhulu ekusebenzeni kwezinto zokukhusela. Iimfuno ezisisiseko zokusebenza kwezixhobo zokugquma zibandakanya ukusebenza kombane, ukumelana nobushushu kunye neempawu zomatshini. Eli nqaku uNksz libhekisela kwisingeniso esifutshane ekusebenzeni kombane wezinto ezikhuselayo. Iimpawu zombane zezixhobo zokugquma ziquka amandla okuqhekeka, ukuxhathisa ukugquma, imvume kunye nokulahlekelwa kwe-dielectric. Ukwahlula i-voltage yokuqhawula ngobunzima bezinto ezikhuselayo kwindawo yokuphuka, echazwe kwi-kilovolts / mm. Ukuqhekeka kwezixhobo zokugquma kungahlulahlulwa ngokweendlela ezintathu: ukuqhekeka kombane, ukuphuka kwe-thermal kunye nokuqhekeka kokukhutshwa. Iimfuno zokusebenza zombane zemoto kwizinto ezigqumayo zezona zibaluleke kakhulu kumandla ombane wokuqhekeka kunye nokumelana nokugquma.

Ngokuxhomekeke kuhlobo lwemoto, ezinye iimfuno zokusebenza kombane azifani ncam. Ngokomzekelo, ukugquma kweenjini eziphezulu ze-voltage kufuna ilahleko ephantsi ye-dielectric yezinto zokukhusela kunye nokuchasana kakuhle kwe-corona; kunye nokusabalalisa intsimi yombane phakathi kwentsimbi yentsimbi kunye nomqhubi kufuneka kuthathelwe ingqalelo. Ubunzulu bommandla wombane buyanda. I-tangent yelahleko nayo iyanda. Xa i-voltage inyuka kwixabiso elithile, iibhubhu ngaphakathi ngaphakathi okanye umda we-electrode uya kukhululwa ngokuyinxenye, kwaye i-tangent yokulahlekelwa ngokukhawuleza iyanda kakhulu. Eli xabiso lombane libizwa ngokuba yi-voltage yokuqala yasimahla. Kubunjineli, umlinganiselo wokuqala wombane wasimahla uhlala usetyenziswa ukujonga umsantsa womoya ngaphakathi kwesakhiwo sokugquma ukulawula umgangatho wokugquma. Ukongeza, ezinye izinto zokukhusela kufuneka ziqwalasele iipropathi zombane ezinje ngokumelana ne-corona, ukuchasana kwe-arc, kunye nokuchasana neempawu zokuvuza.

Ilahleko ye-dielectric ye-insulating material. Izinto ezikhuselayo zivelisa ukulahlekelwa kwamandla ngenxa yokuvuza kombane kunye ne-polarization phantsi kwesenzo sommandla wombane. Ngokuqhelekileyo, amandla okulahlekelwa okanye i-tangent yokulahlekelwa isetyenziselwa ukuvakalisa ubungakanani belahleko ye-dielectric. Ngaphantsi kwesenzo sombane we-DC, ukutshaja kwangoku, ukufunxa ngoku kunye nokuvuza kwangoku kuya kudlula. Xa i-voltage ye-AC isetyenzisiwe, umbane wokutshaja ngokukhawuleza ngumbane osebenzayo (i-capacitive current); ukuvuza kwangoku kukwisigaba kunye nombane kwaye ngumbane osebenzayo; umsinga wokufunxa unazo zombini icandelo elisebenzayo langoku kunye necandelo elisebenzayo langoku. Izinto eziphambili ezichaphazela ilahleko ye-dielectric yezinto zokukhusela. Ekubeni kukho ilahleko ye-dielectric eyahlukeneyo kwiifrikhwensi ezahlukeneyo, i-frequency ethile kufuneka ikhethwe xa kulinganiswa ixabiso le-tangent yelahleko. Ngokubanzi, izinto ezisetyenziswa kwimotor ngokubanzi zilinganiselwa kwi-dielectric loss tangent kumaza ombane.

Ngaphantsi kwesenzo se-voltage, i-insulating material iya kuhlala inokuvuza okuncinci okwangoku kuyo. Inxalenye yale yangoku ihamba ngaphakathi kwezinto; inxalenye yayo ihamba ngomphezulu wezinto eziphathekayo. Ke ngoko, i-resistivity ye-insulation inokwahlulwa ibe yi-volume resistivity kunye ne-surface resistivity. Umthamo wokumelana nomthamo ubonakalisa ukuhanjiswa kombane kwangaphakathi kwezinto, kwaye iyunithi i-ohm · imitha; umgangatho we-resistiveivity ubonisa ukuqhutyelwa kombane kwi-surface yezinto, kwaye iyunithi i-ohm. Umthamo we-resistiveivity we-insulating material ngokuqhelekileyo kuluhlu lwe-107 ukuya kwi-1019 m · m. I-resistiveivity ye-insulating materials ihambelana ngokubanzi nezi zinto zilandelayo. Uninzi lwezinto ezingcolileyo kwizinto ezikhuselayo zivelisa i-ion conductive, enokuthi ikhuthaze ukuchithwa kweemolekyuli ze-polar, ezibangela ukuba i-resistiveivity yehle ngokukhawuleza. Njengoko iqondo lokushisa liphakama, ukuxhathisa kuncipha ngokukhawuleza.