{"id":2143,"date":"2026-03-05T06:21:45","date_gmt":"2026-03-05T06:21:45","guid":{"rendered":"https:\/\/yawei-powertransformer.com\/?p=2143"},"modified":"2026-03-24T06:47:18","modified_gmt":"2026-03-24T06:47:18","slug":"500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems","status":"publish","type":"post","link":"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/","title":{"rendered":"\u0634\u0631\u062d \u0627\u0644\u0645\u062e\u0637\u0637 \u0627\u0644\u0628\u064a\u0627\u0646\u064a \u0627\u0644\u0623\u062d\u0627\u062f\u064a \u0644\u0645\u062d\u0648\u0644 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631 \u0644\u0644\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0641\u064a \u0627\u0644\u0648\u0644\u0627\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u062f\u0629"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u062c\u062f\u0648\u0644 \u0627\u0644\u0645\u062d\u062a\u0648\u064a\u0627\u062a<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u062a\u0628\u062f\u064a\u0644<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" 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href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#What_Is_a_Unifilar_Diagram_in_Power_System_Engineering\" >\u0645\u0627 \u0647\u0648 \u0627\u0644\u0645\u062e\u0637\u0637 \u0623\u062d\u0627\u062f\u064a \u0627\u0644\u0633\u0644\u0643 \u0641\u064a \u0647\u0646\u062f\u0633\u0629 \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0637\u0627\u0642\u0629\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Primary_Voltage_Medium_Voltage\" >\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0623\u0633\u0627\u0633\u064a (\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0648\u0633\u0637)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Secondary_Voltage_Low_Voltage\" >\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u062b\u0627\u0646\u0648\u064a (\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u0646\u062e\u0641\u0636)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Typical_Connection_Type_for_a_500_kVA_Transformer\" >\u0646\u0648\u0639 \u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u0645\u0639\u062a\u0627\u062f \u0644\u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Advantages_of_Delta%E2%80%93Wye_Configuration\" >\u0645\u0632\u0627\u064a\u0627 \u0627\u0644\u062a\u0643\u0648\u064a\u0646 \u00ab\u062f\u0644\u062a\u0627-\u0648\u0627\u064a\u00bb<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Main_Components_in_a_500_kVA_Transformer_Unifilar_Diagram\" >\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u0641\u064a \u0627\u0644\u0645\u062e\u0637\u0637 \u0623\u062d\u0627\u062f\u064a \u0627\u0644\u062e\u064a\u0637 \u0644\u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#1_Medium_Voltage_Utility_Supply\" >1. \u0625\u0645\u062f\u0627\u062f\u0627\u062a \u0627\u0644\u0637\u0627\u0642\u0629 \u0630\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0648\u0633\u0637<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#2_High_Voltage_Disconnect_Switch\" >2. \u0645\u0641\u062a\u0627\u062d \u0641\u0635\u0644 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0639\u0627\u0644\u064a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#3_Surge_Arresters\" >3. \u0645\u0627\u0646\u0639\u0627\u062a \u0627\u0644\u0635\u0648\u0627\u0639\u0642<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#4_High_Voltage_Protection\" >4. \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0639\u0627\u0644\u064a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#5_500_kVA_Transformer\" >5. \u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#6_Grounding_System\" >6. \u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u0623\u0631\u064a\u0636<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#7_Low_Voltage_Distribution_Panel\" >7. \u0644\u0648\u062d\u0629 \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u0646\u062e\u0641\u0636<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Where_500_kVA_Transformers_Are_Commonly_Used\" >\u0627\u0644\u0645\u062c\u0627\u0644\u0627\u062a \u0627\u0644\u062a\u064a \u064a\u0634\u064a\u0639 \u0641\u064a\u0647\u0627 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0630\u0627\u062a \u0627\u0644\u0633\u0639\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Commercial_Buildings\" >\u0627\u0644\u0645\u0628\u0627\u0646\u064a \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Industrial_Facilities\" >\u0627\u0644\u0645\u0646\u0634\u0622\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Infrastructure_Projects\" >\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Design_Standards_for_Transformers_Used_in_the_United_States\" >\u0645\u0639\u0627\u064a\u064a\u0631 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0627\u0644\u0648\u0644\u0627\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u062f\u0629<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Major_Standards\" >\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#500_kVA_Distribution_Transformers_from_Yawei_Transformer\" >\u0645\u062d\u0648\u0644\u0627\u062a \u062a\u0648\u0632\u064a\u0639 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631 \u0645\u0646 \u0634\u0631\u0643\u0629 Yawei Transformer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Frequently_Asked_Questions_FAQ\" >\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629 (FAQ)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#What_is_a_transformer_unifilar_diagram\" >\u0645\u0627 \u0647\u0648 \u0627\u0644\u0645\u062e\u0637\u0637 \u0627\u0644\u0623\u062d\u0627\u062f\u064a \u0627\u0644\u062e\u064a\u0637 \u0644\u0644\u0645\u062d\u0648\u0644\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#What_voltage_is_typical_for_a_500_kVA_transformer_in_the_United_States\" >\u0645\u0627 \u0647\u0648 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0627\u0644\u0645\u0639\u062a\u0627\u062f \u0644\u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631 \u0641\u064a \u0627\u0644\u0648\u0644\u0627\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u062f\u0629\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#What_does_Delta%E2%80%93Wye_mean_in_a_transformer\" >\u0645\u0627 \u0627\u0644\u0645\u0642\u0635\u0648\u062f \u0628\u0640\u00ab\u062f\u0644\u062a\u0627-\u0648\u0627\u064a\u00bb \u0641\u064a \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/#Is_500_kVA_a_common_transformer_size\" >\u0647\u0644 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631 \u062d\u062c\u0645 \u0634\u0627\u0626\u0639 \u0644\u0644\u0645\u062d\u0648\u0644\u0627\u062a\u061f<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 data-start=\"862\" data-end=\"876\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>\u0645\u0642\u062f\u0645\u0629<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"878\" data-end=\"1067\">\u0641\u064a \u062a\u0635\u0645\u064a\u0645 \u0634\u0628\u0643\u0627\u062a \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629\u060c \u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0627 \u064a\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u0645\u0647\u0646\u062f\u0633\u0648\u0646 \u0627\u0644\u0645\u062e\u0637\u0637 \u0623\u062d\u0627\u062f\u064a \u0627\u0644\u062e\u0637 (\u0627\u0644\u0645\u0639\u0631\u0648\u0641 \u0623\u064a\u0636\u064b\u0627 \u0628\u0627\u0633\u0645 \u0627\u0644\u0645\u062e\u0637\u0637 \u0627\u0644\u062e\u0637\u064a) \u0644\u062a\u0648\u0636\u064a\u062d \u0643\u064a\u0641\u064a\u0629 \u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u0645\u0639\u062f\u0627\u062a \u062f\u0627\u062e\u0644 \u0646\u0638\u0627\u0645 \u0627\u0644\u0637\u0627\u0642\u0629.<\/p>\n<p data-start=\"1069\" data-end=\"1349\">\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0645\u0646\u0634\u0622\u062a \u0627\u0644\u062a\u064a \u062a\u062a\u0637\u0644\u0628 \u0645\u062d\u0648\u0644 \u062a\u0648\u0632\u064a\u0639 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631\u060c \u064a\u0642\u062f\u0645 \u0627\u0644\u0645\u062e\u0637\u0637 \u0627\u0644\u0623\u062d\u0627\u062f\u064a \u0627\u0644\u062e\u0637 \u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0645\u0628\u0633\u0637\u0629 \u0639\u0644\u0649 \u0627\u0644\u0634\u0628\u0643\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629\u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643 \u0645\u0635\u062f\u0631 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0648\u0633\u0637\u060c \u0648\u062a\u0648\u0635\u064a\u0644\u0627\u062a \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a\u060c \u0648\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629\u060c \u0648\u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u0623\u0631\u064a\u0636\u060c \u0648\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u0646\u062e\u0641\u0636.<\/p>\n<p data-start=\"1351\" data-end=\"1578\">\u0641\u064a \u0627\u0644\u0648\u0644\u0627\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u062f\u0629\u060c \u062a\u062a\u0648\u0627\u0641\u0642 \u062a\u0631\u0643\u064a\u0628\u0627\u062a \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0639\u0627\u062f\u0629\u064b \u0645\u0639 \u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0643\u0641\u0627\u0621\u0629 \u0627\u0644\u0635\u0627\u062f\u0631\u0629 \u0639\u0646 ANSI \u0648IEEE \u0648\u0648\u0632\u0627\u0631\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 (DOE)\u060c \u0648\u062a\u0634\u0645\u0644 \u0627\u0644\u062a\u0643\u0648\u064a\u0646\u0627\u062a \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629 \u0644\u0644\u062c\u0647\u062f \u062c\u0647\u062f\u064b\u0627 \u0623\u0648\u0644\u064a\u064b\u0651\u0627 \u064a\u0628\u0644\u063a 13.2 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \/ 12.47 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \u0648\u062c\u0647\u062f\u064b\u0627 \u062b\u0627\u0646\u0648\u064a\u064b\u0651\u0627 \u064a\u0628\u0644\u063a 480Y\/277 \u0641\u0648\u0644\u062a.<\/p>\n<p data-start=\"1580\" data-end=\"1758\">\u064a\u0634\u0631\u062d \u0647\u0630\u0627 \u0627\u0644\u062f\u0644\u064a\u0644 \u0643\u064a\u0641\u064a\u0629 \u0628\u0646\u0627\u0621 \u0627\u0644\u0645\u062e\u0637\u0637 \u0627\u0644\u0623\u062d\u0627\u062f\u064a \u0627\u0644\u062e\u0637 \u0644\u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631\u060c \u0648\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u062a\u064a \u064a\u062a\u0636\u0645\u0646\u0647\u0627\u060c \u0648\u0643\u064a\u0641\u064a\u0629 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 \u0641\u064a \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629 \u0648\u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0627\u0644\u0641\u0639\u0644\u064a\u0629.<\/p>\n<h2 data-start=\"1770\" data-end=\"1824\"><span class=\"ez-toc-section\" id=\"What_Is_a_Unifilar_Diagram_in_Power_System_Engineering\"><\/span>\u0645\u0627 \u0647\u0648 \u0627\u0644\u0645\u062e\u0637\u0637 \u0623\u062d\u0627\u062f\u064a \u0627\u0644\u0633\u0644\u0643 \u0641\u064a \u0647\u0646\u062f\u0633\u0629 \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0637\u0627\u0642\u0629\u061f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"1826\" data-end=\"1969\">\u0627\u0644\u0631\u0633\u0645 \u0627\u0644\u062a\u062e\u0637\u064a\u0637\u064a \u0623\u062d\u0627\u062f\u064a \u0627\u0644\u062e\u0637 \u0647\u0648 \u062a\u0645\u062b\u064a\u0644 \u0645\u0628\u0633\u0637 \u0644\u0646\u0638\u0627\u0645 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u064a\u0633\u062a\u062e\u062f\u0645 \u062e\u0637\u064b\u0627 \u0648\u0627\u062d\u062f\u064b\u0627 \u0644\u062a\u0645\u062b\u064a\u0644 \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a \u062b\u0644\u0627\u062b\u064a\u0629 \u0627\u0644\u0623\u0637\u0648\u0627\u0631.<\/p>\n<p data-start=\"1971\" data-end=\"2082\">\u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0631\u0633\u0645 \u0643\u0644 \u0645\u0631\u062d\u0644\u0629 \u0639\u0644\u0649 \u062d\u062f\u0629\u060c \u064a\u0648\u0636\u062d \u0627\u0644\u0631\u0633\u0645 \u0627\u0644\u0628\u064a\u0627\u0646\u064a \u0627\u0644\u0639\u0644\u0627\u0642\u0627\u062a \u0627\u0644\u0648\u0638\u064a\u0641\u064a\u0629 \u0628\u064a\u0646 \u0627\u0644\u0645\u0639\u062f\u0627\u062a.<\/p>\n<p data-start=\"2084\" data-end=\"2120\"><strong>\u064a\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u0645\u0647\u0646\u062f\u0633\u0648\u0646 \u0627\u0644\u0645\u062e\u0637\u0637\u0627\u062a \u0623\u062d\u0627\u062f\u064a\u0629 \u0627\u0644\u062e\u064a\u0637 \u0641\u064a:<\/strong><\/p>\n<ul data-start=\"2122\" data-end=\"2261\">\n<li data-start=\"2122\" data-end=\"2152\">\n<p data-start=\"2124\" data-end=\"2152\">\u062a\u062e\u0637\u064a\u0637 \u0627\u0644\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629<\/p>\n<\/li>\n<li data-start=\"2153\" data-end=\"2174\">\n<p data-start=\"2155\" data-end=\"2174\">\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0645\u062d\u0637\u0627\u062a \u0627\u0644\u0641\u0631\u0639\u064a\u0629<\/p>\n<\/li>\n<li data-start=\"2175\" data-end=\"2203\">\n<p data-start=\"2177\" data-end=\"2203\">\u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a<\/p>\n<\/li>\n<li data-start=\"2204\" data-end=\"2231\">\n<p data-start=\"2206\" data-end=\"2231\">\u062a\u0646\u0633\u064a\u0642 \u0627\u0644\u062d\u0645\u0627\u064a\u0629<\/p>\n<\/li>\n<li data-start=\"2232\" data-end=\"2261\">\n<p data-start=\"2234\" data-end=\"2261\">\u0648\u062b\u0627\u0626\u0642 \u0627\u0644\u0635\u064a\u0627\u0646\u0629<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2263\" data-end=\"2334\"><strong>\u0641\u064a\u0645\u0627 \u064a\u062a\u0639\u0644\u0642 \u0628\u062a\u0631\u0643\u064a\u0628\u0627\u062a \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a\u060c \u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u064a\u0648\u0636\u062d \u0627\u0644\u0645\u062e\u0637\u0637 \u0623\u062d\u0627\u062f\u064a \u0627\u0644\u0633\u0644\u0643 \u0645\u0627 \u064a\u0644\u064a:<\/strong><\/p>\n<ul data-start=\"2336\" data-end=\"2540\">\n<li data-start=\"2336\" data-end=\"2363\">\n<p data-start=\"2338\" data-end=\"2363\">\u062e\u0637 \u062a\u063a\u0630\u064a\u0629 \u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0648\u0627\u0631\u062f<\/p>\n<\/li>\n<li data-start=\"2364\" data-end=\"2402\">\n<p data-start=\"2366\" data-end=\"2402\">\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u062a\u0628\u062f\u064a\u0644 \u0630\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0648\u0633\u0637<\/p>\n<\/li>\n<li data-start=\"2403\" data-end=\"2447\">\n<p data-start=\"2405\" data-end=\"2447\">\u0633\u0639\u0629 \u0627\u0644\u0645\u062d\u0648\u0644 \u0648\u0646\u0648\u0639 \u0627\u0644\u062a\u0648\u0635\u064a\u0644<\/p>\n<\/li>\n<li data-start=\"2448\" data-end=\"2476\">\n<p data-start=\"2450\" data-end=\"2476\">\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062a\u064a\u0627\u0631<\/p>\n<\/li>\n<li data-start=\"2477\" data-end=\"2504\">\n<p data-start=\"2479\" data-end=\"2504\">\u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u0623\u0631\u0636\u064a<\/p>\n<\/li>\n<li data-start=\"2505\" data-end=\"2540\">\n<p data-start=\"2507\" data-end=\"2540\">\u0644\u0648\u062d\u0627\u062a \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u0646\u062e\u0641\u0636<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2542\" data-end=\"2666\">\u0646\u0638\u0631\u0627\u064b \u0644\u0628\u0633\u0627\u0637\u062a\u0647\u060c \u064a\u064f\u0639\u062f \u0627\u0644\u0645\u062e\u0637\u0637 \u0623\u062d\u0627\u062f\u064a \u0627\u0644\u0633\u0644\u0643 \u0623\u062d\u062f \u0623\u0647\u0645 \u0627\u0644\u0648\u062b\u0627\u0626\u0642 \u0641\u064a \u0645\u062c\u0627\u0644 \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0647\u0646\u062f\u0633\u064a \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2148\" src=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/unifilar-diagram-transformer-500-kVA-United-States.webp\" alt=\"Unifilar diagram of a 500 kVA transformer for United States power distribution, showing medium to low voltage connections, produced by a China transformer manufacturer and supplier for industrial, commercial, and utility projects\" width=\"900\" height=\"600\" srcset=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/unifilar-diagram-transformer-500-kVA-United-States.webp 900w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/unifilar-diagram-transformer-500-kVA-United-States-300x200.webp 300w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/unifilar-diagram-transformer-500-kVA-United-States-768x512.webp 768w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/unifilar-diagram-transformer-500-kVA-United-States-18x12.webp 18w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/unifilar-diagram-transformer-500-kVA-United-States-600x400.webp 600w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/p>\n<div class=\"row\"  id=\"row-1070850577\">\n\n\t<div id=\"col-659809410\" class=\"col small-12 large-12\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n<p data-start=\"2678\" data-end=\"2754\">\u0627\u0644\u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a \u0644\u0644\u062c\u0647\u062f \u0644\u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631 \u0641\u064a \u0627\u0644\u0648\u0644\u0627\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u062f\u0629<\/p>\n<p data-start=\"2756\" data-end=\"2928\">\u0641\u064a \u0634\u0628\u0643\u0627\u062a \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0641\u064a \u0623\u0645\u0631\u064a\u0643\u0627 \u0627\u0644\u0634\u0645\u0627\u0644\u064a\u0629\u060c \u0623 <a href=\"https:\/\/yawei-powertransformer.com\/ar\/manufacturer\/500-kva-pad-mounted-distribution-transformer-12470grdy-7200v-primary-480y-277v-secondary-ansi-ieee-compliant-outdoor-rated\/\"><strong data-start=\"2799\" data-end=\"2822\">\u0645\u062d\u0648\u0644 \u0645\u0631\u0643\u0628 \u0639\u0644\u0649 \u0642\u0627\u0639\u062f\u0629 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/strong><\/a> \u064a\u064f\u0633\u062a\u062e\u062f\u0645 \u0639\u0627\u062f\u0629\u064b \u0644\u062e\u0641\u0636 \u0627\u0644\u062c\u0647\u062f <strong data-start=\"2853\" data-end=\"2927\">\u062a\u062d\u0648\u064a\u0644 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0648\u0633\u0637 \u0627\u0644\u0648\u0627\u0631\u062f \u0645\u0646 \u062e\u0637 \u062a\u063a\u0630\u064a\u0629 \u0634\u0631\u0643\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0621 \u0625\u0644\u0649 \u062c\u0647\u062f \u0645\u0646\u062e\u0641\u0636 \u0644\u062a\u063a\u0630\u064a\u0629 \u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u0645\u0628\u0646\u0649<\/strong>.<\/p>\n<h2 data-start=\"2930\" data-end=\"2965\"><span class=\"ez-toc-section\" id=\"Primary_Voltage_Medium_Voltage\"><\/span>\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0623\u0633\u0627\u0633\u064a (\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0648\u0633\u0637)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"2967\" data-end=\"2999\">\u062a\u0634\u0645\u0644 \u0627\u0644\u0641\u0648\u0644\u062a\u064a\u0629 \u0627\u0644\u0623\u0648\u0644\u064a\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629 \u0645\u0627 \u064a\u0644\u064a:<\/p>\n<ul data-start=\"3001\" data-end=\"3057\">\n<li data-start=\"3001\" data-end=\"3015\">\n<p data-start=\"3003\" data-end=\"3015\"><strong data-start=\"3003\" data-end=\"3015\">12.47 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a<\/strong><\/p>\n<\/li>\n<li data-start=\"3016\" data-end=\"3029\">\n<p data-start=\"3018\" data-end=\"3029\"><strong data-start=\"3018\" data-end=\"3029\">13.2 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a<\/strong><\/p>\n<\/li>\n<li data-start=\"3030\" data-end=\"3043\">\n<p data-start=\"3032\" data-end=\"3043\"><strong data-start=\"3032\" data-end=\"3043\">13.8 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a<\/strong><\/p>\n<\/li>\n<li data-start=\"3044\" data-end=\"3057\">\n<p data-start=\"3046\" data-end=\"3057\"><strong data-start=\"3046\" data-end=\"3057\">34.5 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3059\" data-end=\"3147\">\u062a\u0623\u062a\u064a \u0647\u0630\u0647 \u0627\u0644\u0641\u0648\u0644\u062a\u064a\u0629 \u0639\u0627\u062f\u0629\u064b \u0645\u0646 <strong data-start=\"3096\" data-end=\"3146\">\u062e\u0637 \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0645\u0631\u0627\u0641\u0642 \u0623\u0648 \u062e\u0637 \u062a\u063a\u0630\u064a\u0629 \u0627\u0644\u0645\u062d\u0637\u0629 \u0627\u0644\u0641\u0631\u0639\u064a\u0629<\/strong>.<\/p>\n<h2 data-start=\"3149\" data-end=\"3183\"><span class=\"ez-toc-section\" id=\"Secondary_Voltage_Low_Voltage\"><\/span>\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u062b\u0627\u0646\u0648\u064a (\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u0646\u062e\u0641\u0636)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"3185\" data-end=\"3228\">\u0627\u0644\u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u062b\u0627\u0646\u0648\u064a \u0627\u0644\u0623\u0643\u062b\u0631 \u0634\u064a\u0648\u0639\u064b\u0627 \u0647\u0648:<\/p>\n<p data-start=\"3230\" data-end=\"3270\"><strong data-start=\"3230\" data-end=\"3270\">480 \u064a\u0627\u0631\u062f\u0629 \/ 277 \u0641\u0648\u0644\u062a\u060c \u062b\u0644\u0627\u062b\u064a \u0627\u0644\u0623\u0637\u0648\u0627\u0631\u060c \u0631\u0628\u0627\u0639\u064a \u0627\u0644\u0623\u0633\u0644\u0627\u0643<\/strong><\/p>\n<p data-start=\"3272\" data-end=\"3291\">\u064a\u062a\u064a\u062d \u0647\u0630\u0627 \u0627\u0644\u0646\u0638\u0627\u0645 \u0645\u0627 \u064a\u0644\u064a:<\/p>\n<ul data-start=\"3293\" data-end=\"3405\">\n<li data-start=\"3293\" data-end=\"3359\">\n<p data-start=\"3295\" data-end=\"3359\"><strong data-start=\"3295\" data-end=\"3304\">480 V<\/strong> \u0644\u0644\u0645\u062d\u0631\u0643\u0627\u062a\u060c \u0648\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u062a\u062f\u0641\u0626\u0629 \u0648\u0627\u0644\u062a\u0647\u0648\u064a\u0629 \u0648\u062a\u0643\u064a\u064a\u0641 \u0627\u0644\u0647\u0648\u0627\u0621\u060c \u0648\u0627\u0644\u0622\u0644\u0627\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629<\/p>\n<\/li>\n<li data-start=\"3360\" data-end=\"3405\">\n<p data-start=\"3362\" data-end=\"3405\"><strong data-start=\"3362\" data-end=\"3371\">277 \u0641\u0648\u0644\u062a<\/strong> \u0644\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0625\u0636\u0627\u0621\u0629 \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3407\" data-end=\"3449\">\u0648\u0645\u0646 \u0628\u064a\u0646 \u0627\u0644\u0641\u0648\u0644\u062a\u064a\u0627\u062a \u0627\u0644\u062b\u0627\u0646\u0648\u064a\u0629 \u0627\u0644\u0645\u062d\u062a\u0645\u0644\u0629 \u0627\u0644\u0623\u062e\u0631\u0649 \u0645\u0627 \u064a\u0644\u064a:<\/p>\n<ul data-start=\"3451\" data-end=\"3511\">\n<li data-start=\"3451\" data-end=\"3467\">\n<p data-start=\"3453\" data-end=\"3467\">208 \u064a \/ 120 \u0641\u0648\u0644\u062a<\/p>\n<\/li>\n<li data-start=\"3468\" data-end=\"3477\">\n<p data-start=\"3470\" data-end=\"3477\">240 \u0641\u0648\u0644\u062a<\/p>\n<\/li>\n<li data-start=\"3478\" data-end=\"3511\">\n<p data-start=\"3480\" data-end=\"3511\">600 \u0641\u0648\u0644\u062a (\u0623\u0642\u0644 \u0634\u064a\u0648\u0639\u064b\u0627 \u0641\u064a \u0627\u0644\u0648\u0644\u0627\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u062f\u0629)<\/p>\n<\/li>\n<\/ul>\n<div class=\"row\"  id=\"row-1258534443\">\n\n\t<div id=\"col-835765620\" class=\"col medium-4 small-12 large-4\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_405130904\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Pad-Mounted-Transformer-Supplier-for-United-States-Power-Distribution-Systems.webp\" class=\"attachment-large size-large\" alt=\"500 kVA pad mounted transformer manufactured by China transformer factory for United States power distribution systems, ANSI standard three phase underground distribution transformer supplier\" srcset=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Pad-Mounted-Transformer-Supplier-for-United-States-Power-Distribution-Systems.webp 800w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Pad-Mounted-Transformer-Supplier-for-United-States-Power-Distribution-Systems-300x300.webp 300w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Pad-Mounted-Transformer-Supplier-for-United-States-Power-Distribution-Systems-150x150.webp 150w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Pad-Mounted-Transformer-Supplier-for-United-States-Power-Distribution-Systems-768x768.webp 768w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Pad-Mounted-Transformer-Supplier-for-United-States-Power-Distribution-Systems-12x12.webp 12w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Pad-Mounted-Transformer-Supplier-for-United-States-Power-Distribution-Systems-600x600.webp 600w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Pad-Mounted-Transformer-Supplier-for-United-States-Power-Distribution-Systems-100x100.webp 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_405130904 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-231205129\" class=\"col medium-4 small-12 large-4\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_862040392\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Dry-Type-Transformer-Manufacturer-China-Industrial-Power-Transformer-Supplier.webp\" class=\"attachment-large size-large\" alt=\"500 kVA dry type transformer manufactured by a China transformer factory for industrial power distribution systems, three phase electrical transformer supplier for commercial and utility projects\" srcset=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Dry-Type-Transformer-Manufacturer-China-Industrial-Power-Transformer-Supplier.webp 800w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Dry-Type-Transformer-Manufacturer-China-Industrial-Power-Transformer-Supplier-300x300.webp 300w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Dry-Type-Transformer-Manufacturer-China-Industrial-Power-Transformer-Supplier-150x150.webp 150w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Dry-Type-Transformer-Manufacturer-China-Industrial-Power-Transformer-Supplier-768x768.webp 768w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Dry-Type-Transformer-Manufacturer-China-Industrial-Power-Transformer-Supplier-12x12.webp 12w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Dry-Type-Transformer-Manufacturer-China-Industrial-Power-Transformer-Supplier-600x600.webp 600w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Dry-Type-Transformer-Manufacturer-China-Industrial-Power-Transformer-Supplier-100x100.webp 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_862040392 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n\n\t<div id=\"col-650465117\" class=\"col medium-4 small-12 large-4\"  >\n\t\t\t\t<div class=\"col-inner\"  >\n\t\t\t\n\t\t\t\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_1846307010\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Three-Phase-Oil-Immersed-Transformer-Manufacturer-China-Power-Transformer-Factory.webp\" class=\"attachment-large size-large\" alt=\"500 kVA three phase oil immersed transformer manufactured by China power transformer factory, industrial and utility power transformer supplier for commercial and infrastructure projects\" srcset=\"https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Three-Phase-Oil-Immersed-Transformer-Manufacturer-China-Power-Transformer-Factory.webp 800w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Three-Phase-Oil-Immersed-Transformer-Manufacturer-China-Power-Transformer-Factory-300x300.webp 300w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Three-Phase-Oil-Immersed-Transformer-Manufacturer-China-Power-Transformer-Factory-150x150.webp 150w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Three-Phase-Oil-Immersed-Transformer-Manufacturer-China-Power-Transformer-Factory-768x768.webp 768w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Three-Phase-Oil-Immersed-Transformer-Manufacturer-China-Power-Transformer-Factory-12x12.webp 12w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Three-Phase-Oil-Immersed-Transformer-Manufacturer-China-Power-Transformer-Factory-600x600.webp 600w, https:\/\/yawei-powertransformer.com\/wp-content\/uploads\/2026\/03\/500-kVA-Three-Phase-Oil-Immersed-Transformer-Manufacturer-China-Power-Transformer-Factory-100x100.webp 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_1846307010 {\n  width: 100%;\n}\n<\/style>\n\t<\/div>\n\t\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n<h2 data-start=\"3523\" data-end=\"3572\"><span class=\"ez-toc-section\" id=\"Typical_Connection_Type_for_a_500_kVA_Transformer\"><\/span>\u0646\u0648\u0639 \u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u0645\u0639\u062a\u0627\u062f \u0644\u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"3574\" data-end=\"3671\">\u062a\u0633\u062a\u062e\u062f\u0645 \u0645\u0639\u0638\u0645 \u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0627\u0644\u0645\u0628\u0627\u0646\u064a \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629 <strong data-start=\"3640\" data-end=\"3670\">\u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0639\u0644\u0649 \u0634\u0643\u0644 \u062f\u0644\u062a\u0627-\u0648\u0627\u064a (\u0394\u2013Y)<\/strong>.<\/p>\n<h3 data-start=\"3673\" data-end=\"3714\"><span class=\"ez-toc-section\" id=\"Advantages_of_Delta%E2%80%93Wye_Configuration\"><\/span>\u0645\u0632\u0627\u064a\u0627 \u0627\u0644\u062a\u0643\u0648\u064a\u0646 \u00ab\u062f\u0644\u062a\u0627-\u0648\u0627\u064a\u00bb<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol data-start=\"3716\" data-end=\"3897\">\n<li data-start=\"3716\" data-end=\"3770\">\n<p data-start=\"3719\" data-end=\"3770\">\u064a\u0648\u0641\u0631 <strong data-start=\"3730\" data-end=\"3754\">\u0646\u0642\u0637\u0629 \u0645\u062d\u0627\u064a\u062f\u0629 \u062b\u0627\u0628\u062a\u0629<\/strong> \u0644\u0644\u062a\u0623\u0631\u064a\u0636<\/p>\n<\/li>\n<li data-start=\"3771\" data-end=\"3823\">\n<p data-start=\"3774\" data-end=\"3823\">\u064a\u062f\u0639\u0645 <strong data-start=\"3783\" data-end=\"3821\">\u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u062b\u0644\u0627\u062b\u064a\u0629 \u0627\u0644\u0637\u0648\u0631 \u0648\u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0623\u062d\u0627\u062f\u064a\u0629 \u0627\u0644\u0637\u0648\u0631<\/strong><\/p>\n<\/li>\n<li data-start=\"3824\" data-end=\"3864\">\n<p data-start=\"3827\" data-end=\"3864\">\u064a\u0642\u0644\u0644 \u0645\u0646 \u062a\u0623\u062b\u064a\u0631 <strong data-start=\"3849\" data-end=\"3862\">\u0627\u0644\u062a\u0648\u0627\u0641\u0642\u064a\u0627\u062a<\/strong><\/p>\n<\/li>\n<li data-start=\"3865\" data-end=\"3897\">\n<p data-start=\"3868\" data-end=\"3897\">\u064a\u062d\u0633\u0651\u0646 \u0645\u0648\u062b\u0648\u0642\u064a\u0629 \u0627\u0644\u0646\u0638\u0627\u0645<\/p>\n<\/li>\n<\/ol>\n<p data-start=\"3899\" data-end=\"4021\">\u062a\u062a\u064a\u062d \u0646\u0642\u0637\u0629 \u0627\u0644\u0635\u0641\u0631 \u0627\u0644\u0645\u0624\u0631\u0636\u0629 (X0) \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0622\u0645\u0646 \u0644\u0640 <strong data-start=\"3959\" data-end=\"3983\">\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u0625\u0636\u0627\u0621\u0629 277 \u0641\u0648\u0644\u062a<\/strong> \u0648\u064a\u0648\u0641\u0631 \u062d\u0645\u0627\u064a\u0629 \u0645\u0646\u0627\u0633\u0628\u0629 \u0636\u062f \u0627\u0644\u0623\u0639\u0637\u0627\u0644.<\/p>\n<h2 data-start=\"4033\" data-end=\"4090\"><span class=\"ez-toc-section\" id=\"Main_Components_in_a_500_kVA_Transformer_Unifilar_Diagram\"><\/span>\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u0641\u064a \u0627\u0644\u0645\u062e\u0637\u0637 \u0623\u062d\u0627\u062f\u064a \u0627\u0644\u062e\u064a\u0637 \u0644\u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"4092\" data-end=\"4199\">\u0631\u0633\u0645 \u062a\u062e\u0637\u064a\u0637\u064a \u0646\u0645\u0648\u0630\u062c\u064a \u0623\u062d\u0627\u062f\u064a \u0627\u0644\u062e\u0637 \u0644\u0640 <strong data-start=\"4128\" data-end=\"4164\">\u062a\u0631\u0643\u064a\u0628 \u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/strong> \u064a\u062a\u0636\u0645\u0646 \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u062a\u0627\u0644\u064a\u0629.<\/p>\n<h3 data-start=\"4201\" data-end=\"4236\"><span class=\"ez-toc-section\" id=\"1_Medium_Voltage_Utility_Supply\"><\/span>1. \u0625\u0645\u062f\u0627\u062f\u0627\u062a \u0627\u0644\u0637\u0627\u0642\u0629 \u0630\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0648\u0633\u0637<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"4238\" data-end=\"4327\">\u064a\u0628\u062f\u0623 \u0646\u0638\u0627\u0645 \u0627\u0644\u0637\u0627\u0642\u0629 \u0628\u0640 <strong data-start=\"4269\" data-end=\"4287\">\u062e\u0637 \u062a\u063a\u0630\u064a\u0629 \u0627\u0644\u0645\u0631\u0627\u0641\u0642<\/strong>, \u060c \u0648\u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u062a\u062a\u0631\u0627\u0648\u062d \u0628\u064a\u0646 <strong data-start=\"4307\" data-end=\"4326\">12 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \u064835 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a<\/strong>.<\/p>\n<h3 data-start=\"4329\" data-end=\"4365\"><span class=\"ez-toc-section\" id=\"2_High_Voltage_Disconnect_Switch\"><\/span>2. \u0645\u0641\u062a\u0627\u062d \u0641\u0635\u0644 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0639\u0627\u0644\u064a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"4367\" data-end=\"4465\">\u064a\u062a\u064a\u062d \u0647\u0630\u0627 \u0627\u0644\u062c\u0647\u0627\u0632 \u0644\u0644\u0645\u0634\u063a\u0644\u064a\u0646 <strong data-start=\"4399\" data-end=\"4464\">\u0641\u0635\u0644 \u0627\u0644\u0645\u062d\u0648\u0644 \u0644\u0623\u063a\u0631\u0627\u0636 \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0623\u0648 \u0627\u0644\u0625\u063a\u0644\u0627\u0642 \u0641\u064a \u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0637\u0648\u0627\u0631\u0626<\/strong>.<\/p>\n<h3 data-start=\"4467\" data-end=\"4488\"><span class=\"ez-toc-section\" id=\"3_Surge_Arresters\"><\/span>3. \u0645\u0627\u0646\u0639\u0627\u062a \u0627\u0644\u0635\u0648\u0627\u0639\u0642<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"4490\" data-end=\"4535\">\u062a\u062d\u0645\u064a \u0645\u0627\u0646\u0639\u0627\u062a \u0627\u0644\u0635\u0648\u0627\u0639\u0642 \u0627\u0644\u0645\u062d\u0648\u0644 \u0645\u0646:<\/p>\n<ul data-start=\"4537\" data-end=\"4603\">\n<li data-start=\"4537\" data-end=\"4558\">\n<p data-start=\"4539\" data-end=\"4558\">\u0635\u0648\u0627\u0639\u0642 \u0627\u0644\u0628\u0631\u0642<\/p>\n<\/li>\n<li data-start=\"4559\" data-end=\"4579\">\n<p data-start=\"4561\" data-end=\"4579\">\u0627\u0644\u0627\u0631\u062a\u0641\u0627\u0639\u0627\u062a \u0627\u0644\u0645\u0641\u0627\u062c\u0626\u0629 \u0641\u064a \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a<\/p>\n<\/li>\n<li data-start=\"4580\" data-end=\"4603\">\n<p data-start=\"4582\" data-end=\"4603\">\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0632\u0627\u0626\u062f \u0627\u0644\u0639\u0627\u0628\u0631<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"4605\" data-end=\"4634\"><span class=\"ez-toc-section\" id=\"4_High_Voltage_Protection\"><\/span>4. \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0639\u0627\u0644\u064a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"4636\" data-end=\"4667\">\u0642\u062f \u062a\u0634\u0645\u0644 \u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0627 \u064a\u0644\u064a:<\/p>\n<ul data-start=\"4669\" data-end=\"4739\">\n<li data-start=\"4669\" data-end=\"4695\">\n<p data-start=\"4671\" data-end=\"4695\">\u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0627\u0644\u0645\u062d\u062f\u062f\u0629 \u0644\u0644\u062a\u064a\u0627\u0631<\/p>\n<\/li>\n<li data-start=\"4696\" data-end=\"4719\">\n<p data-start=\"4698\" data-end=\"4719\">\u0645\u0641\u0627\u062a\u064a\u062d \u0642\u0637\u0639 \u0627\u0644\u062d\u0645\u0644<\/p>\n<\/li>\n<li data-start=\"4720\" data-end=\"4739\">\n<p data-start=\"4722\" data-end=\"4739\">\u0645\u0631\u062d\u0644\u0627\u062a \u0627\u0644\u062d\u0645\u0627\u064a\u0629<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"4741\" data-end=\"4766\"><span class=\"ez-toc-section\" id=\"5_500_kVA_Transformer\"><\/span>5. \u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"4768\" data-end=\"4790\">\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629:<\/p>\n<ul data-start=\"4792\" data-end=\"4933\">\n<li data-start=\"4792\" data-end=\"4815\">\n<p data-start=\"4794\" data-end=\"4815\">\u0627\u0644\u0633\u0639\u0629: <strong data-start=\"4804\" data-end=\"4815\">500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/strong><\/p>\n<\/li>\n<li data-start=\"4816\" data-end=\"4846\">\n<p data-start=\"4818\" data-end=\"4846\">\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0623\u0648\u0644\u064a: <strong data-start=\"4835\" data-end=\"4846\">13.2 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a<\/strong><\/p>\n<\/li>\n<li data-start=\"4847\" data-end=\"4882\">\n<p data-start=\"4849\" data-end=\"4882\">\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u062b\u0627\u0646\u0648\u064a: <strong data-start=\"4868\" data-end=\"4882\">480 \u0635 \/ 277 \u0641\u0648\u0644\u062a<\/strong><\/p>\n<\/li>\n<li data-start=\"4883\" data-end=\"4910\">\n<p data-start=\"4885\" data-end=\"4910\">\u0627\u0644\u0627\u062a\u0635\u0627\u0644: <strong data-start=\"4897\" data-end=\"4910\">\u062f\u0644\u062a\u0627-\u0648\u0627\u064a<\/strong><\/p>\n<\/li>\n<li data-start=\"4911\" data-end=\"4933\">\n<p data-start=\"4913\" data-end=\"4933\">\u0627\u0644\u062a\u0631\u062f\u062f: <strong data-start=\"4924\" data-end=\"4933\">60 \u0647\u0631\u062a\u0632<\/strong><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"4935\" data-end=\"4957\"><span class=\"ez-toc-section\" id=\"6_Grounding_System\"><\/span>6. \u0646\u0638\u0627\u0645 \u0627\u0644\u062a\u0623\u0631\u064a\u0636<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"4959\" data-end=\"5094\">\u064a\u062a\u0645 \u062a\u0648\u0635\u064a\u0644 \u0646\u0642\u0637\u0629 \u0627\u0644\u0635\u0641\u0631 \u0644\u0644\u0645\u062d\u0648\u0644 (X0) \u0628\u0640 <strong data-start=\"5014\" data-end=\"5044\">\u0646\u0638\u0627\u0645 \u0623\u0642\u0637\u0627\u0628 \u0627\u0644\u062a\u0623\u0631\u064a\u0636<\/strong>, \u060c \u0645\u0645\u0627 \u064a\u0636\u0645\u0646 \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0648\u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u0623\u0639\u0637\u0627\u0644.<\/p>\n<p data-start=\"4959\" data-end=\"5094\"><span style=\"font-size: 120%;\"><a href=\"https:\/\/yawei-powertransformer.com\/ar\/manufacturer\/500-kva-step-down-distribution-transformer-11kv-13-8kv-33kv-to-400v-480v\/\">\u0627\u0642\u0631\u0623 \u0627\u0644\u0645\u0632\u064a\u062f: \u0645\u062d\u0648\u0644 \u062a\u0648\u0632\u064a\u0639 \u062e\u0627\u0641\u0636 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631\u060c 11 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a\u060c 13.8 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a\u060c 33 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0625\u0644\u0649 400 \u0641\u0648\u0644\u062a\u060c 480 \u0641\u0648\u0644\u062a<\/a><\/span><\/p>\n<h3 data-start=\"5096\" data-end=\"5132\"><span class=\"ez-toc-section\" id=\"7_Low_Voltage_Distribution_Panel\"><\/span>7. \u0644\u0648\u062d\u0629 \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u0646\u062e\u0641\u0636<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"5134\" data-end=\"5252\">\u0628\u0639\u062f \u0627\u0644\u0645\u062d\u0648\u0644\u060c \u062a\u062a\u062f\u0641\u0642 \u0627\u0644\u0637\u0627\u0642\u0629 \u0625\u0644\u0649 <strong data-start=\"5176\" data-end=\"5212\">\u0644\u0648\u062d\u0629 \u0623\u0648 \u0644\u0648\u062d\u0629 \u062a\u0648\u0632\u064a\u0639 \u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0645\u0646\u062e\u0641\u0636\u0629 \u0627\u0644\u062c\u0647\u062f<\/strong>, \u060c \u0627\u0644\u062a\u064a \u062a\u0648\u0632\u0639 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0621 \u0645\u0646 \u062e\u0644\u0627\u0644:<\/p>\n<ul data-start=\"5254\" data-end=\"5337\">\n<li data-start=\"5254\" data-end=\"5274\">\n<p data-start=\"5256\" data-end=\"5274\">\u0642\u0648\u0627\u0637\u0639 \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629<\/p>\n<\/li>\n<li data-start=\"5275\" data-end=\"5300\">\n<p data-start=\"5277\" data-end=\"5300\">\u0645\u0631\u0627\u0643\u0632 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0645\u062d\u0631\u0643\u0627\u062a<\/p>\n<\/li>\n<li data-start=\"5301\" data-end=\"5320\">\n<p data-start=\"5303\" data-end=\"5320\">\u0644\u0648\u062d\u0627\u062a \u0627\u0644\u0625\u0636\u0627\u0621\u0629<\/p>\n<\/li>\n<li data-start=\"5321\" data-end=\"5337\">\n<p data-start=\"5323\" data-end=\"5337\">\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u0645\u0628\u0627\u0646\u064a<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"5349\" data-end=\"5393\"><span class=\"ez-toc-section\" id=\"Where_500_kVA_Transformers_Are_Commonly_Used\"><\/span>\u0627\u0644\u0645\u062c\u0627\u0644\u0627\u062a \u0627\u0644\u062a\u064a \u064a\u0634\u064a\u0639 \u0641\u064a\u0647\u0627 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0630\u0627\u062a \u0627\u0644\u0633\u0639\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"5395\" data-end=\"5491\">A <strong data-start=\"5397\" data-end=\"5433\">\u0645\u062d\u0648\u0644 \u062a\u0648\u0632\u064a\u0639 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/strong> \u064a\u064f\u0633\u062a\u062e\u062f\u0645 \u0639\u0644\u0649 \u0646\u0637\u0627\u0642 \u0648\u0627\u0633\u0639 \u0641\u064a \u0623\u0646\u0638\u0645\u0629 \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0637\u0627\u0642\u0629 \u0645\u062a\u0648\u0633\u0637\u0629 \u0627\u0644\u062d\u062c\u0645.<\/p>\n<h3 data-start=\"5493\" data-end=\"5517\"><span class=\"ez-toc-section\" id=\"Commercial_Buildings\"><\/span>\u0627\u0644\u0645\u0628\u0627\u0646\u064a \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul data-start=\"5519\" data-end=\"5583\">\n<li data-start=\"5519\" data-end=\"5539\">\n<p data-start=\"5521\" data-end=\"5539\">\u0645\u062c\u0645\u0639\u0627\u062a \u0627\u0644\u0645\u0643\u0627\u062a\u0628<\/p>\n<\/li>\n<li data-start=\"5540\" data-end=\"5550\">\n<p data-start=\"5542\" data-end=\"5550\">\u0627\u0644\u0641\u0646\u0627\u062f\u0642<\/p>\n<\/li>\n<li data-start=\"5551\" data-end=\"5569\">\n<p data-start=\"5553\" data-end=\"5569\">\u0645\u0631\u0627\u0643\u0632 \u0627\u0644\u062a\u0633\u0648\u0642<\/p>\n<\/li>\n<li data-start=\"5570\" data-end=\"5583\">\n<p data-start=\"5572\" data-end=\"5583\">\u0627\u0644\u0645\u0633\u062a\u0634\u0641\u064a\u0627\u062a<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"5585\" data-end=\"5610\"><span class=\"ez-toc-section\" id=\"Industrial_Facilities\"><\/span>\u0627\u0644\u0645\u0646\u0634\u0622\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul data-start=\"5612\" data-end=\"5682\">\n<li data-start=\"5612\" data-end=\"5636\">\n<p data-start=\"5614\" data-end=\"5636\">\u0645\u0635\u0627\u0646\u0639 \u0627\u0644\u062a\u0635\u0646\u064a\u0639<\/p>\n<\/li>\n<li data-start=\"5637\" data-end=\"5651\">\n<p data-start=\"5639\" data-end=\"5651\">\u0627\u0644\u0645\u0633\u062a\u0648\u062f\u0639\u0627\u062a<\/p>\n<\/li>\n<li data-start=\"5652\" data-end=\"5682\">\n<p data-start=\"5654\" data-end=\"5682\">\u0645\u0646\u0634\u0622\u062a \u062a\u062c\u0647\u064a\u0632 \u0627\u0644\u0623\u063a\u0630\u064a\u0629<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"5684\" data-end=\"5711\"><span class=\"ez-toc-section\" id=\"Infrastructure_Projects\"><\/span>\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul data-start=\"5713\" data-end=\"5805\">\n<li data-start=\"5713\" data-end=\"5746\">\n<p data-start=\"5715\" data-end=\"5746\">\u0634\u0628\u0643\u0627\u062a \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0645\u0631\u0627\u0641\u0642<\/p>\n<\/li>\n<li data-start=\"5747\" data-end=\"5776\">\n<p data-start=\"5749\" data-end=\"5776\">\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0645\u062a\u062c\u062f\u062f\u0629<\/p>\n<\/li>\n<li data-start=\"5777\" data-end=\"5805\">\n<p data-start=\"5779\" data-end=\"5805\">\u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u0628\u0644\u062f\u064a\u0629<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"5807\" data-end=\"5935\">\u0628\u0641\u0636\u0644 \u0642\u062f\u0631\u062a\u0647 \u0627\u0644\u0645\u062a\u0648\u0627\u0632\u0646\u0629\u060c \u064a\u0648\u0641\u0631 \u0627\u0644\u0645\u062d\u0648\u0644 \u0627\u0644\u0630\u064a \u062a\u0628\u0644\u063a \u0642\u062f\u0631\u062a\u0647 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631 <strong data-start=\"5872\" data-end=\"5934\">\u062a\u0648\u0632\u064a\u0639 \u0641\u0639\u0627\u0644 \u0644\u0644\u0637\u0627\u0642\u0629 \u062f\u0648\u0646 \u0627\u0644\u062d\u0627\u062c\u0629 \u0625\u0644\u0649 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0646\u0638\u0627\u0645 \u0628\u0623\u0628\u0639\u0627\u062f \u0623\u0643\u0628\u0631 \u0645\u0646 \u0627\u0644\u0644\u0627\u0632\u0645<\/strong>.<\/p>\n<h2 data-start=\"5947\" data-end=\"6006\"><span class=\"ez-toc-section\" id=\"Design_Standards_for_Transformers_Used_in_the_United_States\"><\/span>\u0645\u0639\u0627\u064a\u064a\u0631 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0627\u0644\u0648\u0644\u0627\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u062f\u0629<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"6008\" data-end=\"6096\">\u064a\u062c\u0628 \u0623\u0646 \u062a\u062a\u0648\u0627\u0641\u0642 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0645\u0631\u0643\u0628\u0629 \u0641\u064a \u0627\u0644\u0648\u0644\u0627\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u062f\u0629 \u0645\u0639 \u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629.<\/p>\n<h3 data-start=\"6098\" data-end=\"6117\"><span class=\"ez-toc-section\" id=\"Major_Standards\"><\/span>\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul data-start=\"6119\" data-end=\"6252\">\n<li data-start=\"6119\" data-end=\"6140\">\n<p data-start=\"6121\" data-end=\"6140\"><strong data-start=\"6121\" data-end=\"6140\">\u0633\u0644\u0633\u0644\u0629 ANSI C57<\/strong><\/p>\n<\/li>\n<li data-start=\"6141\" data-end=\"6173\">\n<p data-start=\"6143\" data-end=\"6173\"><strong data-start=\"6143\" data-end=\"6173\">\u0645\u0639\u0627\u064a\u064a\u0631 IEEE \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a<\/strong><\/p>\n<\/li>\n<li data-start=\"6174\" data-end=\"6214\">\n<p data-start=\"6176\" data-end=\"6214\"><strong data-start=\"6176\" data-end=\"6214\">\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0648\u0632\u0627\u0631\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0623\u0645\u0631\u064a\u0643\u064a\u0629 (DOE) \u0627\u0644\u0645\u062a\u0639\u0644\u0642\u0629 \u0628\u0643\u0641\u0627\u0621\u0629 \u0627\u0644\u0637\u0627\u0642\u0629<\/strong><\/p>\n<\/li>\n<li data-start=\"6215\" data-end=\"6252\">\n<p data-start=\"6217\" data-end=\"6252\"><strong data-start=\"6217\" data-end=\"6252\">\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0645\u062d\u0648\u0644\u0627\u062a NEMA<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"6254\" data-end=\"6279\">\u062a\u0646\u0638\u0645 \u0647\u0630\u0647 \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0645\u0627 \u064a\u0644\u064a:<\/p>\n<ul data-start=\"6281\" data-end=\"6376\">\n<li data-start=\"6281\" data-end=\"6302\">\n<p data-start=\"6283\" data-end=\"6302\">\u0645\u0633\u062a\u0648\u064a\u0627\u062a \u0627\u0644\u0643\u0641\u0627\u0621\u0629<\/p>\n<\/li>\n<li data-start=\"6303\" data-end=\"6330\">\n<p data-start=\"6305\" data-end=\"6330\">\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0639\u0632\u0644<\/p>\n<\/li>\n<li data-start=\"6331\" data-end=\"6353\">\n<p data-start=\"6333\" data-end=\"6353\">\u0625\u062c\u0631\u0627\u0621\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631<\/p>\n<\/li>\n<li data-start=\"6354\" data-end=\"6376\">\n<p data-start=\"6356\" data-end=\"6376\">\u0627\u0644\u0623\u062f\u0627\u0621 \u0641\u064a \u0645\u062c\u0627\u0644 \u0627\u0644\u0633\u0644\u0627\u0645\u0629<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"6378\" data-end=\"6478\">\u064a\u062c\u0628 \u0639\u0644\u0649 \u0627\u0644\u0634\u0631\u0643\u0627\u062a \u0627\u0644\u0645\u0635\u0646\u0639\u0629 \u0627\u0644\u062a\u064a \u062a\u0635\u062f\u0631 \u0625\u0644\u0649 \u0627\u0644\u0633\u0648\u0642 \u0627\u0644\u0623\u0645\u0631\u064a\u0643\u064a\u0629 \u0627\u0644\u062a\u0623\u0643\u062f \u0645\u0646 \u0623\u0646 \u0645\u062d\u0648\u0644\u0627\u062a\u0647\u0627 \u062a\u0633\u062a\u0648\u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a.<\/p>\n<h2 data-start=\"6490\" data-end=\"6546\"><span class=\"ez-toc-section\" id=\"500_kVA_Distribution_Transformers_from_Yawei_Transformer\"><\/span>\u0645\u062d\u0648\u0644\u0627\u062a \u062a\u0648\u0632\u064a\u0639 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631 \u0645\u0646 \u0634\u0631\u0643\u0629 Yawei Transformer<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"6548\" data-end=\"6688\"><strong data-start=\"6548\" data-end=\"6569\">\u0645\u062d\u0648\u0644 \u064a\u0627\u0648\u064a<\/strong> \u0647\u064a \u0634\u0631\u0643\u0629 \u062a\u0635\u0646\u064a\u0639 \u0645\u062a\u062e\u0635\u0635\u0629 \u0641\u064a \u0625\u0646\u062a\u0627\u062c \u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0648\u0633\u0637 \u0648\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0645\u062e\u0635\u0635\u0629 \u0644\u0644\u0623\u0633\u0648\u0627\u0642 \u0627\u0644\u062f\u0648\u0644\u064a\u0629.<\/p>\n<p data-start=\"6690\" data-end=\"6724\"><strong>\u062a\u0634\u0645\u0644 \u062d\u0644\u0648\u0644\u0646\u0627 \u0641\u064a \u0645\u062c\u0627\u0644 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0645\u0627 \u064a\u0644\u064a:<\/strong><\/p>\n<ul data-start=\"6726\" data-end=\"6875\">\n<li data-start=\"6726\" data-end=\"6764\">\n<p data-start=\"6728\" data-end=\"6764\"><strong data-start=\"6728\" data-end=\"6764\">\u0645\u062d\u0648\u0644\u0627\u062a \u0645\u0631\u0643\u0628\u0629 \u0639\u0644\u0649 \u0642\u0627\u0639\u062f\u0629 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/strong><\/p>\n<\/li>\n<li data-start=\"6765\" data-end=\"6809\">\n<p data-start=\"6767\" data-end=\"6809\"><a href=\"https:\/\/yawei-powertransformer.com\/ar\/Wholesale\/distribution-transformers\/\"><strong data-start=\"6767\" data-end=\"6809\">\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0645\u063a\u0645\u0648\u0631\u0629 \u0628\u0627\u0644\u0632\u064a\u062a<\/strong><\/a><\/p>\n<\/li>\n<li data-start=\"6765\" data-end=\"6809\"><a href=\"https:\/\/yawei-powertransformer.com\/ar\/manufacturer\/500-kva-dry-type-cast-resin-transformer-three-phase-power-transformer-480v-400v-230v-11kv-13-2kv-15kv-20kv\/\"><strong>\u0645\u062d\u0648\u0644 \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 \u0627\u0644\u062c\u0627\u0641 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/strong><\/a><\/li>\n<li data-start=\"6810\" data-end=\"6839\">\n<p data-start=\"6812\" data-end=\"6839\"><a href=\"https:\/\/yawei-powertransformer.com\/ar\/Wholesale\/substation-transformers\/\"><strong data-start=\"6812\" data-end=\"6839\">\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0645\u062d\u0637\u0627\u062a \u0627\u0644\u0641\u0631\u0639\u064a\u0629<\/strong><\/a><\/p>\n<\/li>\n<li data-start=\"6840\" data-end=\"6875\">\n<p data-start=\"6842\" data-end=\"6875\"><strong data-start=\"6842\" data-end=\"6875\">\u062a\u0643\u0648\u064a\u0646\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062e\u0635\u0635\u0629<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"6877\" data-end=\"6915\"><strong>\u062a\u0634\u0645\u0644 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629 \u0644\u0644\u0635\u0627\u062f\u0631\u0627\u062a \u0645\u0627 \u064a\u0644\u064a:<\/strong><\/p>\n<ul data-start=\"6917\" data-end=\"7119\">\n<li data-start=\"6917\" data-end=\"6978\">\n<p data-start=\"6919\" data-end=\"6978\">\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0623\u0648\u0644\u064a: <strong data-start=\"6936\" data-end=\"6978\">12.47 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \/ 13.2 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \/ 13.8 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \/ 34.5 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a<\/strong><\/p>\n<\/li>\n<li data-start=\"6979\" data-end=\"7025\">\n<p data-start=\"6981\" data-end=\"7025\">\u0627\u0644\u062c\u0647\u062f \u0627\u0644\u062b\u0627\u0646\u0648\u064a: <strong data-start=\"7000\" data-end=\"7025\">480 \u064a\u0627\u0631\u0643\/277 \u0641\u0648\u0644\u062a \/ 208 \u064a\u0627\u0631\u0643\/120 \u0641\u0648\u0644\u062a<\/strong><\/p>\n<\/li>\n<li data-start=\"7026\" data-end=\"7048\">\n<p data-start=\"7028\" data-end=\"7048\">\u0627\u0644\u062a\u0631\u062f\u062f: <strong data-start=\"7039\" data-end=\"7048\">60 \u0647\u0631\u062a\u0632<\/strong><\/p>\n<\/li>\n<li data-start=\"7049\" data-end=\"7073\">\n<p data-start=\"7051\" data-end=\"7073\">\u0646\u0648\u0639 \u0627\u0644\u062a\u0628\u0631\u064a\u062f: <strong data-start=\"7065\" data-end=\"7073\">\u0645\u0643\u062a\u0628 \u0627\u0644\u0623\u0645\u0645 \u0627\u0644\u0645\u062a\u062d\u062f\u0629 \u0644\u062a\u0646\u0633\u064a\u0642 \u0627\u0644\u0634\u0624\u0648\u0646 \u0627\u0644\u0625\u0646\u0633\u0627\u0646\u064a\u0629<\/strong><\/p>\n<\/li>\n<li data-start=\"7074\" data-end=\"7119\">\n<p data-start=\"7076\" data-end=\"7119\">\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631: <strong data-start=\"7087\" data-end=\"7119\">\u0643\u0641\u0627\u0621\u0629 ANSI \/ IEEE \/ DOE<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"7121\" data-end=\"7322\">\u0628\u0641\u0636\u0644 \u0645\u0631\u0627\u0641\u0642 \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0645\u062a\u0637\u0648\u0631\u0629 \u0648\u0625\u062c\u0631\u0627\u0621\u0627\u062a \u0645\u0631\u0627\u0642\u0628\u0629 \u0627\u0644\u062c\u0648\u062f\u0629 \u0627\u0644\u0635\u0627\u0631\u0645\u0629\u060c \u062a\u0648\u0641\u0631 \u0634\u0631\u0643\u0629 \u00ab\u064a\u0627\u0648\u064a \u062a\u0631\u0627\u0646\u0633\u0641\u0648\u0631\u0645\u0631\u00bb \u062d\u0644\u0648\u0644\u064b\u0627 \u0645\u0648\u062b\u0648\u0642\u0629 \u0641\u064a \u0645\u062c\u0627\u0644 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0644\u0634\u0631\u0643\u0627\u062a \u0627\u0644\u0645\u0631\u0627\u0641\u0642 \u0627\u0644\u0639\u0627\u0645\u0629 \u0648\u0645\u0642\u0627\u0648\u0644\u064a EPC \u0648\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0641\u064a \u062c\u0645\u064a\u0639 \u0623\u0646\u062d\u0627\u0621 \u0627\u0644\u0639\u0627\u0644\u0645.<\/p>\n<h2 data-start=\"7334\" data-end=\"7366\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_FAQ\"><\/span>\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629 (FAQ)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"7368\" data-end=\"7410\"><span class=\"ez-toc-section\" id=\"What_is_a_transformer_unifilar_diagram\"><\/span>\u0645\u0627 \u0647\u0648 \u0627\u0644\u0645\u062e\u0637\u0637 \u0627\u0644\u0623\u062d\u0627\u062f\u064a \u0627\u0644\u062e\u064a\u0637 \u0644\u0644\u0645\u062d\u0648\u0644\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"7412\" data-end=\"7631\">\u0627\u0644\u0631\u0633\u0645 \u0627\u0644\u062a\u062e\u0637\u064a\u0637\u064a \u0623\u062d\u0627\u062f\u064a \u0627\u0644\u062e\u0637 \u0644\u0644\u0645\u062d\u0648\u0644 \u0647\u0648 \u0631\u0633\u0645 \u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0645\u0628\u0633\u0637 \u064a\u0645\u062b\u0644 \u0646\u0638\u0627\u0645 \u0637\u0627\u0642\u0629 \u062b\u0644\u0627\u062b\u064a \u0627\u0644\u0623\u0637\u0648\u0627\u0631 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u062e\u0637 \u0648\u0627\u062d\u062f. \u0648\u0647\u0648 \u064a\u0648\u0636\u062d \u0627\u0644\u062a\u0648\u0635\u064a\u0644\u0627\u062a \u0628\u064a\u0646 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a\u060c \u0648\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062a\u0628\u062f\u064a\u0644\u060c \u0648\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u062d\u0645\u0627\u064a\u0629\u060c \u0648\u0627\u0644\u0623\u062d\u0645\u0627\u0644.<\/p>\n<h3 data-start=\"7638\" data-end=\"7712\"><span class=\"ez-toc-section\" id=\"What_voltage_is_typical_for_a_500_kVA_transformer_in_the_United_States\"><\/span>\u0645\u0627 \u0647\u0648 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0627\u0644\u0645\u0639\u062a\u0627\u062f \u0644\u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631 \u0641\u064a \u0627\u0644\u0648\u0644\u0627\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u062f\u0629\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"7714\" data-end=\"7746\">\u062a\u0634\u0645\u0644 \u0627\u0644\u0642\u064a\u0645 \u0627\u0644\u0627\u0633\u0645\u064a\u0629 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629 \u0644\u0644\u062c\u0647\u062f \u0645\u0627 \u064a\u0644\u064a:<\/p>\n<ul data-start=\"7748\" data-end=\"7810\">\n<li data-start=\"7748\" data-end=\"7782\">\n<p data-start=\"7750\" data-end=\"7782\">\u0627\u0644\u0645\u0631\u062d\u0644\u0629 \u0627\u0644\u0627\u0628\u062a\u062f\u0627\u0626\u064a\u0629: <strong data-start=\"7759\" data-end=\"7782\">12.47 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \u0623\u0648 13.2 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a<\/strong><\/p>\n<\/li>\n<li data-start=\"7783\" data-end=\"7810\">\n<p data-start=\"7785\" data-end=\"7810\">\u0627\u0644\u062b\u0627\u0646\u0648\u064a\u0629: <strong data-start=\"7796\" data-end=\"7810\">480 \u0635 \/ 277 \u0641\u0648\u0644\u062a<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"7812\" data-end=\"7886\">\u064a\u064f\u0633\u062a\u062e\u062f\u0645 \u0647\u0630\u0627 \u0627\u0644\u062a\u0643\u0648\u064a\u0646 \u0639\u0644\u0649 \u0646\u0637\u0627\u0642 \u0648\u0627\u0633\u0639 \u0641\u064a \u0627\u0644\u0645\u0646\u0634\u0622\u062a \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629 \u0648\u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629.<\/p>\n<h3 data-start=\"7893\" data-end=\"7938\"><span class=\"ez-toc-section\" id=\"What_does_Delta%E2%80%93Wye_mean_in_a_transformer\"><\/span>\u0645\u0627 \u0627\u0644\u0645\u0642\u0635\u0648\u062f \u0628\u0640\u00ab\u062f\u0644\u062a\u0627-\u0648\u0627\u064a\u00bb \u0641\u064a \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"7940\" data-end=\"8141\">\u064a\u0634\u064a\u0631 \u0645\u0635\u0637\u0644\u062d \u00ab\u062f\u0644\u062a\u0627-\u0648\u0627\u064a\u00bb \u0625\u0644\u0649 \u062a\u0643\u0648\u064a\u0646 \u0644\u0641\u0627\u062a \u0627\u0644\u0645\u062d\u0648\u0644 \u0627\u0644\u0630\u064a \u064a\u0633\u062a\u062e\u062f\u0645 \u0641\u064a\u0647 \u0627\u0644\u062c\u0627\u0646\u0628 \u0627\u0644\u0623\u0648\u0644\u064a <strong data-start=\"8028\" data-end=\"8048\">\u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u062f\u0644\u062a\u0627<\/strong> \u0648\u064a\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u062c\u0627\u0646\u0628 \u0627\u0644\u062b\u0627\u0646\u0648\u064a <strong data-start=\"8079\" data-end=\"8104\">\u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0639\u0644\u0649 \u0634\u0643\u0644 \u062d\u0631\u0641 W (\u0646\u062c\u0645\u064a)<\/strong>, \u060c \u0645\u0645\u0627 \u064a\u0648\u0641\u0631 \u0646\u0642\u0637\u0629 \u0645\u062d\u0627\u064a\u062f\u0629 \u0645\u0624\u0631\u0636\u0629.<\/p>\n<h3 data-start=\"8148\" data-end=\"8188\"><span class=\"ez-toc-section\" id=\"Is_500_kVA_a_common_transformer_size\"><\/span>\u0647\u0644 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631 \u062d\u062c\u0645 \u0634\u0627\u0626\u0639 \u0644\u0644\u0645\u062d\u0648\u0644\u0627\u062a\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"8190\" data-end=\"8321\">\u0646\u0639\u0645. \u064a\u064f\u0639\u062f \u0627\u0644\u0645\u062d\u0648\u0644 \u0627\u0644\u0630\u064a \u062a\u0628\u0644\u063a \u0642\u062f\u0631\u062a\u0647 500 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631 \u0645\u0646 \u0627\u0644\u0623\u062d\u062c\u0627\u0645 \u0627\u0644\u0634\u0627\u0626\u0639\u0629 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0627\u0644\u0645\u0628\u0627\u0646\u064a \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629 \u0627\u0644\u0645\u062a\u0648\u0633\u0637\u0629 \u0627\u0644\u062d\u062c\u0645 \u0648\u0627\u0644\u0645\u0635\u0627\u0646\u0639 \u0648\u0634\u0628\u0643\u0627\u062a \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0645\u0631\u0627\u0641\u0642 \u0627\u0644\u0639\u0627\u0645\u0629.<\/p>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\n<\/div>\n\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f280-o1\" lang=\"en-US\" dir=\"ltr\" data-wpcf7-id=\"280\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/ar\/wp-json\/wp\/v2\/posts\/2143#wpcf7-f280-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"Contact form\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/ar\/wp-json\/wp\/v2\/posts\/2143#wpcf7-f280-o1\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"280\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.6\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"en_US\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f280-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/fieldset>\n<div class='custom_contact_style'>\n\t<div class=\"row row-small\">\n\t\t<div class=\"col medium-6 small-12 large-6\">\n\t\t\t<div class=\"col-inner\">\n\t\t\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"\u0627\u0644\u0627\u0633\u0645*\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span>\n\t\t\t\t<\/p>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<div class=\"col medium-6 small-12 large-6\">\n\t\t\t<div class=\"col-inner\">\n\t\t\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"\u0627\u0644\u0628\u0631\u064a\u062f \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a*\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span>\n\t\t\t\t<\/p>\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t<div class='cus_contact_form_bottom'>\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-phone\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"\u0627\u0644\u0647\u0627\u062a\u0641\" value=\"\" type=\"text\" name=\"your-phone\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class='cus_contact_form_bottom'>\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-country\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"\u0627\u0644\u0628\u0644\u062f\" value=\"\" type=\"text\" name=\"your-country\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"10\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"\u0631\u0633\u0627\u0644\u062a\u0643*\" name=\"your-message\"><\/textarea><\/span>\n\t<\/p>\n\t<div style=\"margin-bottom:10px;\">\n\t\t<p><span class=\"wpcf7-form-control-wrap kc_captcha cf7ic-toggle\" data-name=\"kc_captcha\"><span class=\"wpcf7-form-control wpcf7-radio\"><span class=\"captcha-image\" style=\"display: none;\"><span class=\"cf7ic_instructions\">Please prove you are human by selecting the<span> car<\/span>.<\/span><label><input aria-label=\"1\" type=\"radio\" name=\"kc_captcha\" value=\"bot\" \/><svg aria-hidden=\"true\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 576 512\"><path fill=\"currentColor\" d=\"M488 313v143c0 13-11 24-24 24H348c-7 0-12-5-12-12V356c0-7-5-12-12-12h-72c-7 0-12 5-12 12v112c0 7-5 12-12 12H112c-13 0-24-11-24-24V313c0-4 2-7 4-10l188-154c5-4 11-4 16 0l188 154c2 3 4 6 4 10zm84-61l-84-69V44c0-6-5-12-12-12h-56c-7 0-12 6-12 12v73l-89-74a48 48 0 00-61 0L4 252c-5 4-5 12-1 17l25 31c5 5 12 5 17 1l235-193c5-4 11-4 16 0l235 193c5 5 13 4 17-1l25-31c4-6 4-13-1-17z\"\/><\/svg><\/label><label><input aria-label=\"2\" type=\"radio\" name=\"kc_captcha\" value=\"kc_human\" \/><svg aria-hidden=\"true\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path fill=\"currentColor\" d=\"M500 168h-55l-8-21a127 127 0 00-120-83H195a127 127 0 00-120 83l-8 21H12c-8 0-14 8-11 16l8 24a12 12 0 0011 8h29a64 64 0 00-33 56v48c0 16 6 31 16 42v62c0 13 11 24 24 24h48c13 0 24-11 24-24v-40h256v40c0 13 11 24 24 24h48c13 0 24-11 24-24v-62c10-11 16-26 16-42v-48c0-24-13-45-33-56h29a12 12 0 0011-8l8-24c3-8-3-16-11-16zm-365 2c9-25 33-42 60-42h122c27 0 51 17 60 42l15 38H120l15-38zM88 328a32 32 0 010-64c18 0 48 30 48 48s-30 16-48 16zm336 0c-18 0-48 2-48-16s30-48 48-48 32 14 32 32-14 32-32 32z\"\/><\/svg><\/label><label><input aria-label=\"3\" type=\"radio\" name=\"kc_captcha\" value=\"bot\" \/><svg aria-hidden=\"true\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path fill=\"currentColor\" d=\"M512 176a176 176 0 01-209 173l-24 27a24 24 0 01-18 8h-37v40c0 13-11 24-24 24h-40v40c0 13-11 24-24 24H24c-13 0-24-11-24-24v-78c0-6 3-13 7-17l162-162a176 176 0 11343-55zm-176-48a48 48 0 1096 0 48 48 0 00-96 0z\"\/><\/svg><\/label>\r\n    <\/span>\r\n    <span style=\"display:none\">\r\n        <input type=\"text\" name=\"kc_honeypot\">\r\n    <\/span><\/span><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"\u0625\u0631\u0633\u0627\u0644 \u0631\u0633\u0627\u0644\u0629\" \/>\n\t<\/p>\n<\/div><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<input type=\"hidden\" name=\"trp-form-language\" value=\"ar\"\/><\/form>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Introduction In electrical power distribution design, engineers frequently use a unifilar diagram (also called a single-line diagram) to represent how equipment is connected within a power system. For facilities that require a 500 kVA distribution transformer, the unifilar diagram provides a simplified overview of the electrical network, including the medium-voltage supply, transformer connections, protection devices, [&#8230;]\n","protected":false},"author":4,"featured_media":2147,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[345,344,341,227,347,293,228,343,346,342],"class_list":["post-2143","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-13-2-kv-to-480v-transformer","tag-500-kva-distribution-transformer","tag-500-kva-transformer","tag-dry-type-transformer","tag-electrical-power-distribution-system","tag-oil-immersed-transformer","tag-pad-mounted-transformer","tag-single-line-diagram-transformer","tag-three-phase-transformer-diagram","tag-transformer-unifilar-diagram"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>500 kVA Transformer Unifilar Diagram Explained for United States Electrical Systems | ANSI Distribution Transformer Guide | Yawei Transformer<\/title>\n<meta name=\"description\" content=\"Learn how a 500 kVA transformer unifilar diagram is used in United States electrical power systems, including typical voltage configurations such as 13.2 kV to 480Y\/277V, transformer connection types, grounding methods, and protection equipment. This guide explains the key components of a single-line diagram for 500 kVA distribution transformers, helping engineers, EPC contractors, and industrial project managers understand transformer integration in commercial and utility power networks.The article also covers common applications of 500 kVA three-phase transformers, design considerations for U.S. electrical standards, and best practices for medium-voltage to low-voltage power distribution systems. Whether you are designing a facility power system, preparing electrical documentation, or sourcing transformers for infrastructure projects, understanding a clear transformer unifilar diagram is essential for safe and efficient power system planning.Yawei Transformer is a professional transformer manufacturer and supplier from China, providing custom 500 kVA distribution transformers, dry type transformers, oil immersed transformers, and pad mounted transformers for global power utilities, EPC contractors, and industrial applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/\" \/>\n<meta property=\"og:locale\" content=\"ar_AR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"500 kVA Transformer Unifilar Diagram Explained for United States Electrical Systems | ANSI Distribution Transformer Guide | Yawei Transformer\" \/>\n<meta property=\"og:description\" content=\"Learn how a 500 kVA transformer unifilar diagram is used in United States electrical power systems, including typical voltage configurations such as 13.2 kV to 480Y\/277V, transformer connection types, grounding methods, and protection equipment. This guide explains the key components of a single-line diagram for 500 kVA distribution transformers, helping engineers, EPC contractors, and industrial project managers understand transformer integration in commercial and utility power networks.The article also covers common applications of 500 kVA three-phase transformers, design considerations for U.S. electrical standards, and best practices for medium-voltage to low-voltage power distribution systems. Whether you are designing a facility power system, preparing electrical documentation, or sourcing transformers for infrastructure projects, understanding a clear transformer unifilar diagram is essential for safe and efficient power system planning.Yawei Transformer is a professional transformer manufacturer and supplier from China, providing custom 500 kVA distribution transformers, dry type transformers, oil immersed transformers, and pad mounted transformers for global power utilities, EPC contractors, and industrial applications.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/yawei-powertransformer.com\/ar\/500-kva-transformer-unifilar-diagram-explained-for-united-states-electrical-systems\/\" \/>\n<meta property=\"og:site_name\" content=\"Electrical Power Transformer Manufacturer | 0.11\u2013500kV, 15kVA\u20131200MVA \u2013 Sichuan Yawei Transformer\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-05T06:21:45+00:00\" \/>\n<meta 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With advanced manufacturing facilities, experienced engineers, integrated production processes, and comprehensive testing capabilities, Yawei Transformer provides factory-direct OEM\/ODM and customized transformer solutions designed to meet IEC, ANSI, IEEE, UL, CSA, CE, GOST, and other international requirements.","url":"https:\/\/yawei-powertransformer.com\/ar\/author\/ad-sc-yaweiyz\/"}]}},"_links":{"self":[{"href":"https:\/\/yawei-powertransformer.com\/ar\/wp-json\/wp\/v2\/posts\/2143","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yawei-powertransformer.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yawei-powertransformer.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yawei-powertransformer.com\/ar\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/yawei-powertransformer.com\/ar\/wp-json\/wp\/v2\/comments?post=2143"}],"version-history":[{"count":5,"href":"https:\/\/yawei-powertransformer.com\/ar\/wp-json\/wp\/v2\/posts\/2143\/revisions"}],"predecessor-version":[{"id":2201,"href":"https:\/\/yawei-powertransformer.com\/ar\/wp-json\/wp\/v2\/posts\/2143\/revisions\/2201"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yawei-powertransformer.com\/ar\/wp-json\/wp\/v2\/media\/2147"}],"wp:attachment":[{"href":"https:\/\/yawei-powertransformer.com\/ar\/wp-json\/wp\/v2\/media?parent=2143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yawei-powertransformer.com\/ar\/wp-json\/wp\/v2\/categories?post=2143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yawei-powertransformer.com\/ar\/wp-json\/wp\/v2\/tags?post=2143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}