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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
06/04/2005 |
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Data da última atualização: |
06/04/2005 |
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Autoria: |
MURAKAMI, C. R.; ALTAFIM, R. A. C.; BONOMO, A.; CRUVINEL, P. E.; CHIERICE, G. O.; AGNELLI, J. A. M. |
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Título: |
Study of pin-type polymeric electric insulators: manufacturing process, tomographic analyses and electrical and mechanical tests. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON PROPERTIES AND APPLICATIONS OF DIELECTRIC MATERIALS, 7., jun. 2003. Nagoya, Japan. Proceedings... Nagoya, 2003. ref. P4-34. |
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Idioma: |
Inglês |
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Conteúdo: |
Unlike other countries, pin-type porceIain insulators are still considered traditional in Brazil and are applied on a iarge scale in electric power distribution liDes, in a predominantly aerial type configuration. Despite tbeir low and tberefore competitive cost, these insuIators have undergone non- programmed shutdowns caused by defects in the dielectric material. A description is given' herein not only of tbe manufacturing process of pin-type polymeric insuIators, but also of computcrized tomography-based analyses ofthese insuIators to verify tbe homogeneity of the dielectric material's composition, as well as tbe results of alternating electric current tests and mechanical flexure tests before and after accelerated aging. This paper reports on a preliminary study, presenting and discussing pin-type polymeric insuIators manufactured with castor oil-based polyurethane resins and comparing them with porcelain insulators. The results revealed that the aged and nonaged electric insuIators displayed the same electrical behavior under alternating electric current, while tbe aged insulators showed greater mechanical rigidity |
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Palavras-Chave: |
Testes mecânicos. |
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Thesagro: |
Tomografia. |
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Categoria do assunto: |
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Marc: |
LEADER 01867naa a2200205 a 4500
001 1028937
005 2005-04-06
008 2003 bl --- 0-- u #d
100 1 $aMURAKAMI, C. R.
245 $aStudy of pin-type polymeric electric insulators$bmanufacturing process, tomographic analyses and electrical and mechanical tests.
260 $c2003
520 $aUnlike other countries, pin-type porceIain insulators are still considered traditional in Brazil and are applied on a iarge scale in electric power distribution liDes, in a predominantly aerial type configuration. Despite tbeir low and tberefore competitive cost, these insuIators have undergone non- programmed shutdowns caused by defects in the dielectric material. A description is given' herein not only of tbe manufacturing process of pin-type polymeric insuIators, but also of computcrized tomography-based analyses ofthese insuIators to verify tbe homogeneity of the dielectric material's composition, as well as tbe results of alternating electric current tests and mechanical flexure tests before and after accelerated aging. This paper reports on a preliminary study, presenting and discussing pin-type polymeric insuIators manufactured with castor oil-based polyurethane resins and comparing them with porcelain insulators. The results revealed that the aged and nonaged electric insuIators displayed the same electrical behavior under alternating electric current, while tbe aged insulators showed greater mechanical rigidity
650 $aTomografia
653 $aTestes mecânicos
700 1 $aALTAFIM, R. A. C.
700 1 $aBONOMO, A.
700 1 $aCRUVINEL, P. E.
700 1 $aCHIERICE, G. O.
700 1 $aAGNELLI, J. A. M.
773 $tIn: INTERNATIONAL CONFERENCE ON PROPERTIES AND APPLICATIONS OF DIELECTRIC MATERIALS, 7., jun. 2003. Nagoya, Japan. Proceedings... Nagoya, 2003. ref. P4-34.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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| Registros recuperados : 7 | |
| 2. |  | RABELLO, L. M.; CRUVINEL, P. E.; ALTAFIM, R. A. C. An improved electric tomography dedicated to agriculture applications. In: WORLD MULTICONFERENCE ON: CIRCUITS, SYSTEMS, COMMUNICATIONS AND COMPUTERS (IEEE/WSES/IMACS), 3., 1999, Athens. Proceedings... [Athens]: World Scientific Engineering Society, 1999. p.5291-5295, ref. 529. Editor Nikos E. Mastorakis. 1 CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
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| 4. | | HERMANN, P. S. P.; CARDOSO, L. P.; ALTAFIM, R. A. C.; MURAKAMI, C. R. Surface analysis with atomic force microscopy (AFM) of polyurethane resins derived from castor oil with filler. In: CONGRESSO BRASILEIRO DE MICROSCOPIA DE MATERIAIS - MICROMAT, 7., 2000, São Pedro, SP. MICROMAT 2000: abstracts... São Carlos: [UFSCar], 2000. p. 16., ref. RE004-013.| Biblioteca(s): Embrapa Instrumentação. |
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| 5. | | CRUVINEL, P. E.; RABELLO, L. M.; MASCARENHAS, S.; ALTAFIM, R. A. C.; GIGANTE, G. E.; STADERINI, E. M.; CESAREO, R. Tomografia por impedância elétrica e seus possíveis usos na agropecuária. São Carlos, SP: Embrapa Instrumentação Agropecuária, 1998. (Embrapa Instrumentação Agropecuária. Pesquisa em Andamento, 26).| Biblioteca(s): Embrapa Instrumentação. |
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| 6. | | ALTAFIM, R. A. C.; MURAKAMI, C. R.; HERRMANN, P. S. P.; NAIME, J. M.; CRUVINEL, P. E.; CARDOSO, L. P. Uma nova metodologia para análise dos materiais dielétricos usados em isoladores poliméricos. In: ENCONTRO REGIONAL LATINO AMERICANO DA CIGRÉ-ERLAC - ENCUENTRO REGIONAL LATINO AMERICANO DEL CIGRÉ, 9., 2001, Foz do Iguaçu. IX Erlac: anais. [Foz do iguaçu]: Cigré, 2001. 5 f. 1 CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
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| 7. | | MURAKAMI, C. R.; ALTAFIM, R. A. C.; BONOMO, A.; CRUVINEL, P. E.; CHIERICE, G. O.; AGNELLI, J. A. M. Study of pin-type polymeric electric insulators: manufacturing process, tomographic analyses and electrical and mechanical tests. In: INTERNATIONAL CONFERENCE ON PROPERTIES AND APPLICATIONS OF DIELECTRIC MATERIALS, 7., jun. 2003. Nagoya, Japan. Proceedings... Nagoya, 2003. ref. P4-34.| Biblioteca(s): Embrapa Instrumentação. |
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| Registros recuperados : 7 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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