Pono ʻoe e ʻike e pili ana i nā mea insulating

2021-06-12

1. Ka wehewehe ʻana o ka mea insulating

  ʻO kahi mea i haku ʻia me nā mea me ka nui resistivity o 109~1022Ω·cm i kapa ʻia he insulating mea i ka ʻenehana uila, a ua kapa ʻia hoʻi he dielectric.

  He kū'ē nui ka mea insulating i ka manawa DC. Ma muli o kona kūpaʻa kiʻekiʻe, ma lalo o ka hana o ka uila DC, me ka hoʻohui a 

liʻiliʻi liʻiliʻi liʻiliʻi liʻiliʻi leakage o kēia manawa, ʻaʻole ia e hoʻokō; ʻoiai no ka AC i kēia manawa aia ka capacitive current Pass, maʻamau i manaʻo ʻia he non-conductive. ʻOi aku ka nui o ka resistivity o ka mea insulating, ʻoi aku ka maikaʻi o ka hana insulation.

2. Ka hoʻokaʻawale ʻana o nā mea insulating

  Mea hoʻokaʻawale kinoea

  Ma lalo o nā kūlana maʻamau, loaʻa i nā kinoea maloʻo ma lalo o ka mahana maʻamau a me ke kaomi maʻamau i nā waiwai insulation maikaʻi, e like me ka ea, nitrogen, a me ka sulfur hexafluoride gas. I kēia manawa, hoʻohana nui ʻia nā mea hoʻololi kinoea i hoʻopaʻa ʻia me ka sulfur hexafluoride.

  Mea hoʻoheheʻe wai

  Loaʻa nā mea hoʻoheheʻe wai ma ke ʻano o ka ʻaila, i ʻike ʻia ʻo ka ʻaila insulating, e like me ka ʻaila transformer, ka aila hoʻololi, ka ʻaila capacitor, a me nā mea ʻē aʻe.

  Mea hoʻokaʻawale paʻa

  ʻO nā mea paʻa paʻa maʻamau ka nui o ka pepa insulating, insulating paperboard, lāʻau, uila laminated wood, papa pepa phenolic, papa pulupulu phenolic, FR4 pepa, 3240 Epoxy Resin Pepa etc.

FR4 Pepa.webp

ʻO ka pahu pahu pahu lithium 3240 epoxy papa

3026 Phenolic Laminated pulupulu lole pepa

3. Nā waiwai kumu o nā mea insulating

ʻO ka hana uila

  ʻO ka hana uila o ka mea insulating ka hana koʻikoʻi o ka mea hoʻololi, a he mea nui ia i ka hoʻoholo ʻana i ke koho ʻana i nā mea insulating. Loaʻa ka hana uila i nā ʻano penei:

1. Ke kū'ē kū'ē

  ʻO ka quotient o ka volta DC i hoʻohana ʻia ma waena o nā electrodes ʻelua o ka insulator i puʻunaue ʻia e ka mea e hele nei i kēia manawa ma nā electrodes ʻelua ʻo ia ke kūpaʻa insulation.


  Hoʻokaʻawale ʻia ke kūpaʻa insulation i ke kūpaʻa insulation ili a me ke kūpaʻa insulation volume. ʻO ke kūpaʻa ʻana o ka insulation o ka ʻili e pili ana i ka nui o ka hiki ke pale aku i ka holo ʻana o ke au ma ka ʻili o ka dielectric; ʻO ke kūpaʻa insulation volume e pili ana i ka nui o ka pale ʻana i ke au mai ka hele ʻana ma loko o ka dielectric.

2. Ka ikaika uila

  Ke ʻoi aku ka ikaika o ke kahua uila ma mua o ka waiwai i ʻae ʻia (waiwai koʻikoʻi) i hiki i ke ʻano ke kū ʻole, nalowale ka hana insulation. Ua kapa ʻia kēia ʻano ʻo ka haʻihaʻi uila o ka waena. ʻO ka volta i hiki mai ai ka dielectric breakdown i kapa ʻia ʻo ka breakdown voltage, a ʻo ka ikaika o ke kahua uila i kapa ʻia ʻo ka ikaika uila o ka waena.


  ʻO ka ikaika uila o ka mea insulating e pili ana i ka hana mua o ka mea ponoʻī, ka mahana, ka haʻahaʻa a me nā mea pili ʻē aʻe. ʻO ka hana uila o ka mea insulating i hoʻohana ʻia i ka transformer e pili pū ana me ke ʻano a me ka hoʻohana ʻana i nā kūlana o ka transformer ponoʻī.


  Ma hope o ka haki ʻana o ka mea hoʻokalakupua paʻa, ʻaʻole hiki ke hoʻihoʻi ʻia iā ia iho a hiki ke hoʻololi wale ʻia; ʻOiai ke hoʻopau ʻia nā mea hoʻoheheʻe wai a me ke kinoea, hiki iā lākou ke hoʻihoʻi i kā lākou hana insulation kumu ma hope o kekahi manawa, he elastic breakdown.

3. Pohō dielectric

  I loko o ke kahua uila, hoʻopau ka mea insulating i ka ikehu uila a hoʻopau i ka mana ma ke ʻano o ka wela i kapa ʻia ʻo dielectric loss. Hōʻike ʻia ka poho dielectric e ka tangent o ka angle pohō dielectric (tanδ), ʻo ia hoʻi, ʻoi aku ka nui o ka tanδ, ʻoi aku ka nui o ka poho dielectric, ʻoi aku ka kiʻekiʻe o ka wela waena, a ʻoi aku ka wikiwiki o ka makahiki.

4. Dielectric mau

  ʻO ka ʻae ʻia ka nui kino e hōʻike ana i ka polarization o kahi dielectric ma lalo o kahi māla uila. No ka mea hoʻokaʻawale laina isotropic, ʻo kona mau dielectric: ε = ε0 * εr

ʻO ε ka dielectric mau o ka dielectric; ʻO ε0 ka mea mau dielectric vacuum; ʻO ka εr ka mea mau dielectric pili o ka dielectric.

Kūʻē wela

  Ma hope o ka hoʻohana ʻia ʻana o ka mea hoʻololi, ʻo ka insulating medium i loko o ia mea i loko o kahi ʻano wela kiʻekiʻe. I ka manawa like, ma lalo o ka hana o ke kahua uila, ʻo ka mea insulating ponoʻī nō hoʻi e hoʻopuka i ka wela. Inā ʻaʻole hiki ke kaulike ʻia ka mea insulating ma waena o ka wela a me ka wela, e hoʻomau ka piʻi ʻana o ka mahana, a e nalowale koke ka mea insulating i kāna mau mea insulating a hoʻohaʻahaʻa. Ua kapa ʻia kēia ʻano o ka pōʻino insulation.


  ʻO nā hōʻailona e hōʻike ana i ka pale wela o nā mea insulating e pili ana i ka pale wela, ke kūpaʻa, ka wela o ka hana i ʻae ʻia a me ka pae wela wela, etc. ʻO nā wehewehe kumu penei:

1. kū pale i ka wela

  Hōʻike i ka hiki ke hoʻololi ʻole i ka waiwai dielectric, nā waiwai mechanical, nā waiwai kino a me nā kemika, a pēlā aku ma lalo o ka wela kiʻekiʻe.

2. Ke kūpaʻa wela

  E pili ana i ka hiki o kahi mea insulating ke mālama i kona kūlana maʻamau me ka hoʻololi ʻole ʻana i kona mau waiwai dielectric, nā waiwai mechanical, nā waiwai kino a me nā waiwai ʻē aʻe ma lalo o ke ʻano o ka hoʻololi mau ʻana o ka mahana.

3. ʻO ka wela hana i ʻae ʻia

  E pili ana i ka mahana i hiki ai i ka mea insulating ke mālama i nā waiwai dielectric pono, nā waiwai mechanical, a me nā waiwai kino a me nā kemika no ka manawa lōʻihi (15-20 mau makahiki) me ka ʻole o ka pōʻino nui.

4. Heat resistance grade

  Hōʻike i ka wela hana ʻae ʻia o ka mea insulating. ʻO nā māka pale wela o nā mea insulating ka nui o 90 ° C, 105 ° C, 120 ° C, 130 ° C, 155 ° C, 180 ° C, 200 ° C, 220 ° C, etc.

Mechanical waiwai

  Ma waho aʻe o ka insulation, pono nā ʻāpana insulating i hoʻohana ʻia ma ka transformer e kū i nā ʻano like ʻole e like me ke kaomi a me ka ʻāʻī i ka wā o ka hana. Pono kēia i ka mea insulating e loaʻa nā waiwai mechanical maikaʻi i ka mahana hana ʻae ʻia.


  ʻO nā hōʻailona e hōʻike ana i nā waiwai mechanical o nā mea insulating e pili ana i ka ikaika a me ka paʻakikī, etc., a penei kā lākou wehewehe ʻana:

1. paʻakikī

  Hōʻike i ka hiki ʻole o ka ʻili o ke kino ke hoʻololi ʻole ma hope o ke kaomi ʻana.

2. Ka ikaika

  Hōʻike i ka hiki ʻole o ka mea ke hoʻololi ʻole ma hope o ke kau ʻia ʻana i ke koʻikoʻi (ka hoʻopaʻapaʻa, hoʻopaʻa ʻana, ka piko, ka hopena, a me ka haʻalulu).


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