{"id":3584,"date":"2013-10-22T16:15:20","date_gmt":"2013-10-22T20:15:20","guid":{"rendered":"http:\/\/www.transformadores.cl\/?p=1723"},"modified":"2016-05-17T11:05:40","modified_gmt":"2016-05-17T11:05:40","slug":"autotransformador-trifasico-aceite-mineral-de-2000-kva-en-23-kv-enersis-2","status":"publish","type":"post","link":"https:\/\/www.transformadores.cl\/en\/proyects\/autotransformador-trifasico-aceite-mineral-de-2000-kva-en-23-kv-enersis-2\/","title":{"rendered":"Three phase autotransformer 2.000 KVA in 23 KV in mineral oil for Enersis"},"content":{"rendered":"<p>Date: August 2012<\/p>\n<p>Company: Enersis \/ Santiago \u2013 Metropolitan area.<\/p>\n<p>CH Three Phase autotransformer, auto refrigerated, immersed in mineral oil, outdoors, hermetic, with insulators class 34,5kV to high voltage, designed and constructed according to ANSI C 571290 norms.<\/p>\n<p>1) Autotransformer general characteristics<\/p>\n<ul>\n<li>Potential: 2000 kVA<\/li>\n<li>Raise of temperature: 65 \u00baC<\/li>\n<li>Service altitude: 1000 m.a.s.l.<\/li>\n<li>Frequency: 50 Hz<\/li>\n<li>Impedance: 4%; tolerance \u00b1 10 %<\/li>\n<li>Connection group: Yyn0<\/li>\n<li>Polarity: Subtractive<\/li>\n<li>N\u00ba of phases: 3<\/li>\n<li>Nominal primary voltage: 23000 Volts<\/li>\n<li>Primary BIL: 150 kV<\/li>\n<li>Autotransformer Connection: Three Phase<\/li>\n<li>Secondary voltage: 12000 Volts<\/li>\n<li>Secondary BIL: 95 kV<\/li>\n<li>Primary derivations: 25300-24150-23000-21850-20700 Volts<\/li>\n<li>Tertiary voltage: &lt; 5 kV<\/li>\n<li>Tertiary connection group: Closed delta with accessible vertex.<\/li>\n<li>Refrigerant liquid: Dielectric mineral oil<\/li>\n<li>Refrigeration: ONAN<\/li>\n<li>K Factor: 1<\/li>\n<li>Losses: Normal<\/li>\n<\/ul>\n<p>2) Tests to the autotransformer<\/p>\n<p>Routine tests indicated in ANSI C57.12.90 were realized, and the sealing and pressure proves.<\/p>\n<p>3) Autotransformer accessories<\/p>\n<ul>\n<li>Bushings located on the lid<\/li>\n<li>Tap changer, external drive, no voltage<\/li>\n<li>Oil level indicator magnetic-type<\/li>\n<li>Oil temperature thermometer dial-type, with drag needle<\/li>\n<li>1\u201d oil full nipple in the cover<\/li>\n<li>Above valve of 1\u201d oil filtrated<\/li>\n<li>Valve of draining and exposing 1\u201d<\/li>\n<li>Pressure relief valve<\/li>\n<li>Tertiary bushings accessible to bridge with fuse<\/li>\n<li>Two plates of grounding connection<\/li>\n<li>Eyebolts<\/li>\n<li>Steel characteristic plate<\/li>\n<li>Dielectric mineral oil<\/li>\n<li>Anchor base to floor or platform<\/li>\n<\/ul>\n<p>4) Autotransformer losses<\/p>\n<ul>\n<li>Loss in Cu: \u2264 11550 Watts<\/li>\n<li>Loss in Vaci\u00f3: \u2264 1890 Watts<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Date: August 2012 Company: Enersis \/ Santiago \u2013 Metropolitan area. CH Three Phase autotransformer, auto refrigerated, immersed in mineral oil, outdoors, hermetic, with insulators class 34,5kV to high voltage, designed and constructed according to ANSI C 571290 norms. 1) Autotransformer general characteristics Potential: 2000 kVA Raise of temperature: 65 \u00baC Service altitude: 1000 m.a.s.l. Frequency:&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[173],"tags":[],"class_list":["post-3584","post","type-post","status-publish","format-standard","hentry","category-proyects","description-off"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.4 (Yoast SEO v25.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Transformadores CH | Autotransformador 2000 KVA 23 KV en aceite<\/title>\n<meta name=\"description\" content=\"Autotransformador trifasicos marca CH, auto-refrigerados de 2000 KVA en 23 KV en aceite.\" \/>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Three phase autotransformer 2.000 KVA in 23 KV in mineral oil for Enersis\" 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