{"id":11655,"date":"2026-10-09T00:27:13","date_gmt":"2026-10-08T16:27:13","guid":{"rendered":"https:\/\/subian-electric.com\/?p=11655"},"modified":"2026-10-09T00:29:56","modified_gmt":"2026-10-08T16:29:56","slug":"differential-protection-of-transformer","status":"publish","type":"post","link":"https:\/\/subian-electric.com\/ar\/blog\/differential-protection-of-transformer\/","title":{"rendered":"\u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629 \u0644\u0644\u0645\u062d\u0648\u0644"},"content":{"rendered":"<p>\u0639\u0646\u062f\u0645\u0627 \u062a\u0633\u0623\u0644 \u0623\u062d\u062f \u0645\u0647\u0646\u062f\u0633\u064a \u0627\u0644\u0645\u0631\u062d\u0644\u0627\u062a \u0630\u0648\u064a \u0627\u0644\u062e\u0628\u0631\u0629 \u0623\u064a \u0645\u0631\u062d\u0644 \u062d\u0645\u0627\u064a\u0629 \u0644\u0646 \u064a\u062a\u0645 \u0625\u062e\u0631\u0627\u062c\u0647 \u0645\u0646 \u0627\u0644\u062e\u062f\u0645\u0629 \u0639\u0644\u0649 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I2\u062b\u0627\u0646\u064a\u0629|<\/p>\n<p>\u0628\u0639\u062f \u0638\u0647\u0648\u0631 \u0639\u0637\u0644 \u062f\u0627\u062e\u0644 \u0627\u0644\u0645\u062d\u0648\u0644\u060c \u064a\u0638\u0647\u0631 \u0645\u0643\u0648\u0646 \u062b\u0627\u0644\u062b \u0644\u0645 \u064a\u062a\u0645 \u0627\u062d\u062a\u0633\u0627\u0628\u0647 \u0628\u0648\u0627\u0633\u0637\u0629 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a\u060c \u0648\u0628\u0627\u0644\u062a\u0627\u0644\u064a\u060c \u0644\u0645 \u064a\u0639\u062f \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0643\u0648\u0646 \u0627\u0644\u0645\u062c\u0645\u0648\u0639 \u0635\u0641\u0631\u064b\u0627. \u0648\u0644\u0643\u0646 \u0647\u0646\u0627\u0643 \u0639\u0627\u0645\u0644\u0627\u0646 \u064a\u0639\u0642\u062f\u0627\u0646 \u0627\u0644\u0648\u0636\u0639 \u0644\u0623\u0646 \u0627\u0644\u0645\u062d\u0648\u0644 \u062f\u0627\u0626\u0645\u064b\u0627 \u0645\u0627 \u064a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u0641\u0631\u0639 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\u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629:<\/p>\n<ul>\n<li>\u0627\u0644\u0627\u0644\u062a\u0642\u0627\u0637 (Id \u0623\u0648 Is1): 20\u201330% \u0645\u0646 \u0645\u0633\u062a\u0648\u0649 \u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u062d\u0648\u0644 \u0627\u0644\u0645\u0635\u0646\u0641. \u0627\u062e\u062a\u0631 30% \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u062a\u064a\u0627\u0631 \u0645\u0646 \u0641\u0626\u0629 \u0645\u0646\u062e\u0641\u0636\u0629 \u0623\u0648 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u062d\u0645\u0644 \u063a\u064a\u0631 \u0645\u062a\u0648\u0627\u0632\u0646\u060c \u0645\u0639 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0625\u0639\u062f\u0627\u062f 20% \u0641\u0642\u0637 \u0639\u0646\u062f\u0645\u0627 \u062a\u0643\u0648\u0646 \u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u062a\u064a\u0627\u0631 \u0648\u0627\u0644\u0623\u0633\u0644\u0627\u0643 \u0645\u062a\u0637\u0627\u0628\u0642\u0629 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\u0627\u0644\u0646\u0633\u0628. \u064a\u062c\u0628 \u0627\u062e\u062a\u064a\u0627\u0631 \u0646\u0633\u0628\u0629 CT \u0628\u0637\u0631\u064a\u0642\u0629 \u062a\u062c\u0639\u0644 \u0627\u0644\u062a\u064a\u0627\u0631\u0627\u062a \u0642\u0631\u064a\u0628\u0629 \u0645\u0646 10% \u0645\u0646 \u0628\u0639\u0636\u0647\u0627 \u0627\u0644\u0628\u0639\u0636 \u0639\u0644\u0649 \u0643\u0644\u0627 \u0627\u0644\u062c\u0627\u0646\u0628\u064a\u0646 \u0639\u0646\u062f \u0627\u0644\u0646\u0642\u0637\u0629 \u0627\u0644\u0645\u0635\u0646\u0641\u0629 \u0644\u062a\u062c\u0646\u0628 \u0641\u0642\u062f\u0627\u0646 \u0627\u0644\u0647\u0627\u0645\u0634.<\/li>\n<li>\u064a\u062c\u0628 \u0623\u062e\u0630 \u0645\u062d\u0648\u0644 \u0627\u0644\u062a\u0628\u062f\u064a\u0644 \u0641\u064a \u0627\u0644\u0627\u0639\u062a\u0628\u0627\u0631. \u062a\u0642\u0648\u0645 \u0627\u0644\u0645\u062d\u0648\u0644\u0629 \u0645\u0639 \u00b110% \u0628\u062a\u063a\u064a\u064a\u0631 \u0646\u0633\u0628\u062a\u0647\u0627 \u0628\u0645\u0642\u062f\u0627\u0631 20% \u0645\u0646 \u0637\u0631\u0641 \u0625\u0644\u0649 \u0622\u062e\u0631 \u0648\u064a\u062c\u0628 \u0623\u062e\u0630 \u0647\u0630\u0647 \u0627\u0644\u0641\u0631\u0648\u0642 \u0641\u064a \u0627\u0644\u0627\u0639\u062a\u0628\u0627\u0631 \u0641\u064a \u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0645\u064a\u0644 \u0644\u0644\u0645\u0631\u062d\u0644\u061b \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0634\u062f\u064a\u062f\u0629 \u0627\u0644\u0627\u0646\u062d\u062f\u0627\u0631\u060c \u0641\u0625\u0646 \u0627\u0644\u062d\u0633\u0627\u0633\u064a\u0629 \u062a\u0636\u062d\u064a.<\/li>\n<li>\u064a\u062c\u0628 \u0627\u062a\u0628\u0627\u0639 \u0627\u0644\u0642\u0637\u0628\u064a\u0629. \u0627\u0644\u0642\u0627\u0639\u062f\u0629 \u0647\u064a \u0623\u0646 \u062c\u0645\u064a\u0639 CTs \u062a\u0648\u0627\u062c\u0647 \u0627\u0644\u0645\u062d\u0648\u0644\u0629. \u0625\u0630\u0627 \u0642\u0645\u062a \u0628\u062a\u063a\u064a\u064a\u0631 \u0627\u062a\u062c\u0627\u0647 \u0623\u062d\u062f \u0623\u0632\u0648\u0627\u062c CTs\u060c \u0641\u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0627\u0644\u0641\u0631\u0642\u060c \u0633\u064a\u062a\u0639\u0631\u0641 \u0627\u0644\u0645\u0631\u062d\u0644 \u0639\u0644\u0649 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0643\u0644\u064a.<\/li>\n<\/ul>\n<p>\u0625\u0630\u0627 \u0643\u0646\u062a \u062a\u0639\u0645\u0644 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0627\u0644\u0623\u0633\u0644\u0627\u0643 \u0639\u0644\u0649 \u0648\u062d\u062f\u0629 \u063a\u064a\u0631 \u0645\u0623\u0644\u0648\u0641\u0629\u060c \u0641\u0625\u0646 \u0647\u0630\u0627 \u0627\u0644\u062f\u0644\u064a\u0644 <a href=\"https:\/\/subian-electric.com\/ar\/blog\/transformer-delta-wye-how-to-wire-it\/\">\u062d\u0648\u0644 \u0643\u064a\u0641\u064a\u0629 \u062a\u0648\u0635\u064a\u0644 \u0627\u062a\u0635\u0627\u0644\u0627\u062a \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u062f\u0644\u062a\u0627 \u0648\u0648\u0627\u064a<\/a> \u064a\u063a\u0637\u064a \u062c\u0627\u0646\u0628 \u0627\u0644\u0644\u0641 \u0644\u0646\u0641\u0633 \u0627\u0644\u0645\u0634\u0643\u0644\u0629\u060c \u0648\u0647\u0648 \u0645\u0641\u064a\u062f \u0639\u0646\u062f \u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0631\u0633\u0648\u0645\u0627\u062a \u0645\u0639 \u0644\u0648\u062d\u0629 \u0627\u0644\u0627\u0633\u0645.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11658\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/10\/Differential-versus-REF-\u2014-and-where-the-scheme-falls-short.webp\" alt=\"\u0627\u0644\u0641\u0631\u0642 \u0628\u064a\u0646 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629 \u0648REF \u2014 \u0648\u0623\u064a\u0646 \u062a\u0642\u0635\u0631 \u0627\u0644\u0645\u062e\u0637\u0637\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>\u0627\u0644\u0641\u0631\u0642 \u0628\u064a\u0646 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629 \u0648REF \u2014 \u0648\u0623\u064a\u0646 \u062a\u0642\u0635\u0631 \u0627\u0644\u0645\u062e\u0637\u0637<\/h2>\n<p>\u062d\u0645\u0627\u064a\u0629 \u0639\u0637\u0644 \u0627\u0644\u0623\u0631\u0636 \u0627\u0644\u0645\u0642\u064a\u062f\u0629\u060c \u0648\u0627\u0644\u062a\u064a \u062a\u064f\u0639\u0631\u0641 \u0623\u064a\u0636\u064b\u0627 \u0628\u0627\u0633\u0645 ANSI 64REF \u0623\u0648 \u0628\u0628\u0633\u0627\u0637\u0629 REF\u060c \u064a\u064f\u0642\u0627\u0644 \u0625\u0646\u0647\u0627 \u201c\u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629 \u0644\u0645\u0644\u0641 \u0648\u0627\u062d\u062f\u201d. \u0647\u0630\u0627 \u0635\u062d\u064a\u062d \u062a\u0645\u0627\u0645\u064b\u0627 \u062d\u064a\u062b \u0623\u0646 REF \u0647\u0648 \u0645\u062e\u0637\u0637 \u0639\u0627\u0644\u064a \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u064a\u0642\u064a\u0633 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u062a\u062f\u0641\u0642 \u0625\u0644\u0649 \u0646\u0642\u0637\u0629 \u0627\u0644\u0646\u062c\u0645\u0629 \u0644\u0645\u0644\u0641 \u0648\u0627\u062d\u062f \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0639\u0627\u0626\u062f \u0639\u0628\u0631 CTs \u0627\u0644\u0637\u0648\u0631. \u0646\u0638\u0631\u064b\u0627 \u0644\u0623\u0646\u0647 \u064a\u0643\u0634\u0641 \u0639\u0646 \u0627\u0644\u062a\u064a\u0627\u0631 \u0641\u064a \u0645\u0644\u0641 \u0648\u0627\u062d\u062f \u0641\u0642\u0637\u060c \u0641\u0625\u0646\u0647 \u0623\u0643\u062b\u0631 \u062d\u0633\u0627\u0633\u064a\u0629 \u0628\u0643\u062b\u064a\u0631 \u0645\u0646 \u0627\u0644\u0645\u062e\u0637\u0637 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a \u0627\u0644\u0643\u0627\u0645\u0644\u060c \u0648\u0639\u0627\u062f\u0629 \u0645\u0627 \u064a\u0643\u0648\u0646 \u0623\u0643\u062b\u0631 \u062d\u0633\u0627\u0633\u064a\u0629 \u0628\u062d\u0648\u0627\u0644\u064a \u0639\u0634\u0631\u0629 \u0623\u0636\u0639\u0627\u0641.<\/p>\n<p>\u0644\u0645\u0627\u0630\u0627 \u0643\u0644\u0627\u0647\u0645\u0627 \u0645\u0637\u0644\u0648\u0628\u061f \u0644\u0623\u0646\u0647 \u0641\u064a \u062d\u0627\u0644\u0629 \u062d\u062f\u0648\u062b \u0639\u0637\u0644 \u0628\u064a\u0646 \u0627\u0644\u0644\u0641 \u0627\u0644\u0623\u0631\u0636\u064a \u0628\u0627\u0644\u0642\u0631\u0628 \u0645\u0646 \u0627\u0644\u0645\u062d\u0627\u064a\u062f \u0644\u0645\u0644\u0641 \u0646\u062c\u0645\u064a \u0648\u0627\u062d\u062f\u060c \u0633\u064a\u0643\u0648\u0646 \u0627\u0644\u062a\u064a\u0627\u0631 \u0635\u063a\u064a\u0631\u064b\u0627 \u0648\u0645\u0639\u0638\u0645 \u0627\u0644\u062a\u064a\u0627\u0631 \u0633\u064a\u062a\u062f\u0627\u0648\u0644 \u0641\u064a \u0627\u0644\u0645\u0644\u0641 \u0646\u0641\u0633\u0647 \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0627\u0644\u0645\u0631\u0648\u0631 \u0639\u0628\u0631 \u0627\u0644\u0645\u0646\u0637\u0642\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629. \u0644\u0627 \u064a\u0645\u0643\u0646 \u0644\u062c\u0647\u0627\u0632 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 87T \u0631\u0624\u064a\u062a\u0647. \u064a\u0645\u0643\u0646 \u0644\u0640 REF \u0631\u0624\u064a\u062a\u0647.<\/p>\n<p>\u064a\u062c\u0628 \u0623\u0646 \u0646\u0639\u062f\u062f \u0627\u0644\u0639\u064a\u0648\u0628 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u0644\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629\u060c \u062d\u064a\u062b \u062a\u062d\u062f\u062f \u0627\u0644\u0625\u0639\u062f\u0627\u062f\u0627\u062a:<\/p>\n<ul>\n<li>\u062a\u0634\u0628\u0639 CTs \u0641\u064a \u062d\u0627\u0644\u0629 \u0627\u0644\u0623\u0639\u0637\u0627\u0644 \u0627\u0644\u062e\u0627\u0631\u062c\u064a\u0629. \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0624\u062f\u064a \u0639\u0637\u0644 \u062e\u0627\u0631\u062c\u064a \u0642\u0648\u064a \u0625\u0644\u0649 \u062a\u0634\u0628\u0639 \u062f\u0627\u0626\u0631\u0629 CT \u0648\u0627\u062d\u062f\u0629 \u0645\u0645\u0627 \u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u062a\u0634\u0643\u064a\u0644 \u062a\u064a\u0627\u0631 \u062a\u0641\u0627\u0636\u0644\u064a \u0632\u0627\u0626\u0641. \u0641\u064a \u0647\u0630\u0647 \u0627\u0644\u062d\u0627\u0644\u0629\u060c \u064a\u0645\u0643\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0627\u0646\u062d\u064a\u0627\u0632\u060c \u0648\u0645\u0646\u062d\u062f\u0631 \u062a\u0634\u063a\u064a\u0644 \u0622\u062e\u0631 \u0648CTs \u0630\u0627\u062a \u062d\u0645\u0644 \u0643\u0627\u0641\u064d.<\/li>\n<li>\u0639\u062f\u0645 \u062a\u0637\u0627\u0628\u0642 \u0646\u0633\u0628\u0629 \u0627\u0644\u0637\u0648\u0631. \u0643\u0644 \u0625\u062c\u0631\u0627\u0621 \u062a\u0639\u0648\u064a\u0636\u064a \u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u062a\u0642\u0644\u064a\u0644 \u062d\u0633\u0627\u0633\u064a\u0629 \u0627\u0644\u0646\u0638\u0627\u0645.<\/li>\n<li>\u0646\u0637\u0627\u0642 \u062a\u0646\u0638\u064a\u0645 \u0645\u062d\u0648\u0644 \u0627\u0644\u062a\u0648\u0635\u064a\u0644. \u0643\u0644\u0645\u0627 \u0632\u0627\u062f \u0646\u0637\u0627\u0642 \u0645\u062d\u0648\u0644 \u0627\u0644\u062a\u0648\u0635\u064a\u0644\u060c \u0632\u0627\u062f \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a \u0627\u0644\u0630\u064a \u064a\u062c\u0628 \u062a\u062d\u0645\u0644\u0647\u060c \u0648\u0628\u0627\u0644\u062a\u0627\u0644\u064a \u064a\u062c\u0628 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0645\u0646\u062d\u062f\u0631 \u062a\u0634\u063a\u064a\u0644 \u0623\u0639\u0644\u0649.<\/li>\n<li>\u062a\u062f\u0641\u0642 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0632\u0627\u0626\u062f \u0648\u0627\u0644\u0625\u062b\u0627\u0631\u0629 \u0627\u0644\u0632\u0627\u0626\u062f\u0629. \u064a\u062a\u0645 \u062d\u0644 \u0627\u0644\u0645\u0634\u0643\u0644\u0629 \u0628\u0645\u0633\u0627\u0639\u062f\u0629 \u062a\u0642\u064a\u064a\u062f 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\u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629\u060c \u0641\u0625\u0646 87T \u062a\u0634\u064a\u0631 \u0625\u0644\u0649 \u0623\u0646\u0647 \u062a\u0645 \u062a\u0635\u0645\u064a\u0645\u0647 \u062e\u0635\u064a\u0635\u064b\u0627 \u0644\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0645\u0639 \u0627\u0644\u0645\u062d\u0648\u0644. \u0628\u0639\u0636 \u0627\u0644\u0631\u0645\u0648\u0632 \u0627\u0644\u0623\u062e\u0631\u0649 \u0627\u0644\u062a\u064a \u0642\u062f \u062a\u0648\u062c\u062f \u0639\u0644\u0649 \u0646\u0641\u0633 \u0627\u0644\u0644\u0648\u062d\u0629 \u0647\u064a 87G \u0623\u0648 64REF \u0641\u064a\u0645\u0627 \u064a\u062a\u0639\u0644\u0642 \u0628\u0627\u0644\u0639\u0637\u0644 \u0627\u0644\u0623\u0631\u0636\u064a \u0627\u0644\u0645\u0642\u064a\u062f\u060c 87B \u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644 \u0644\u0644\u0628\u0627\u0631\u060c 50\/51 \u0643\u0646\u0633\u062e\u0629 \u0627\u062d\u062a\u064a\u0627\u0637\u064a\u0629 \u0644\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0632\u0627\u0626\u062f \u0627\u0644\u0632\u0645\u0646\u064a\u060c Buchholz \u0623\u0648 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0645\u0641\u0627\u062c\u0626 63\u060c 49 \u0644\u0644\u062d\u0631\u0627\u0631\u0629\u060c \u064824 \u0644\u0644\u0632\u064a\u0627\u062f\u0629 \u0641\u064a \u0627\u0644\u0625\u062b\u0627\u0631\u0629.<\/p>\n<h3>\u0643\u064a\u0641 \u062a\u062d\u0633\u0628 \u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0645\u062d\u0648\u0644 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629\u061f<\/h3>\n<p>\u0642\u0645 \u0628\u062a\u0646\u0641\u064a\u0630 \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0639\u0644\u0649 \u062e\u0645\u0633 \u0645\u0631\u0627\u062d\u0644. \u0643\u0645\u062b\u0627\u0644\u060c \u062f\u0639\u0646\u0627 \u0646\u0623\u062e\u0630 \u0645\u062d\u0648\u0644 10 MVA\u060c 33\/11 kV\u060c Dyn11.<\/p>\n<ul>\n<li>\u0627\u062d\u0633\u0628 \u0627\u0644\u062a\u064a\u0627\u0631\u0627\u062a \u0627\u0644\u0645\u0642\u062f\u0631\u0629. \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0623\u0648\u0644\u064a \u0647\u0648 10,000 \u00f7 (\u221a3 \u00d7 33) = 175 A \u0648\u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u062b\u0627\u0646\u0648\u064a \u0647\u0648 10,000 \u00f7 (\u221a3 \u00d7 11) = 525 A.<\/li>\n<li>\u0627\u062e\u062a\u0631 \u0646\u0633\u0628 CT. \u062a\u0639\u0637\u064a \u0646\u0633\u0628 CT 200\/1 \u0639\u0644\u0649 \u062c\u0627\u0646\u0628 33 kV \u0648600\/1 \u0639\u0644\u0649 \u062c\u0627\u0646\u0628 11 kV \u062a\u064a\u0627\u0631\u064b\u0627 \u062b\u0627\u0646\u0648\u064a\u064b\u0627 \u0642\u062f\u0631\u0647 0.875 A \u06480.875 A\u060c \u0648\u0647\u0648 \u062a\u0637\u0627\u0628\u0642 \u0645\u062b\u0627\u0644\u064a \u0639\u0646\u062f \u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u0627\u0633\u0645\u064a. \u062a\u0623\u0643\u062f \u0645\u0646 \u0623\u0646 \u0639\u062f\u0645 \u0627\u0644\u062a\u0637\u0627\u0628\u0642 \u0644\u0627 \u064a\u062a\u062c\u0627\u0648\u0632 10% \u0639\u0644\u0649 \u0645\u062f\u0649 \u0643\u0627\u0645\u0644 \u0646\u0637\u0627\u0642 \u0627\u0644\u062a\u0648\u0635\u064a\u0644.<\/li>\n<li>\u062d\u062f\u062f \u0642\u064a\u0645\u0629 \u0627\u0644\u0627\u0644\u062a\u0642\u0627\u0637. \u0633\u062a\u0643\u0648\u0646 0.25 \u00d7 0.875 \u2248 0.22 A\u061b \u0642\u0645 \u0628\u062a\u0642\u0631\u064a\u0628\u0647\u0627 \u0625\u0644\u0649 \u0623\u0642\u0631\u0628 \u062e\u0637\u0648\u0629 \u0645\u062a\u0627\u062d\u0629 \u0648\u0647\u064a \u062a\u0642\u0631\u064a\u0628\u064b\u0627 0.25 A.<\/li>\n<li>\u0627\u062d\u0633\u0628 \u0627\u0644\u0642\u064a\u0648\u062f. \u0642\u064a\u0645\u0629 \u0627\u0644\u0642\u064a\u0648\u062f \u0647\u064a 4 \u00d7 0.875 = 3.5 A \u0644\u062a\u064a\u0627\u0631 \u0645\u0633\u062a\u0645\u0631 \u0642\u062f\u0631\u0647 4 \u0623\u0636\u0639\u0627\u0641 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0642\u062f\u0631. \u0627\u0644\u0645\u064a\u0644 \u0639\u0646\u062f 30% \u064a\u0639\u0646\u064a \u0623\u0646 \u0627\u0644\u0645\u0631\u062d\u0644 \u064a\u062c\u0628 \u0623\u0646 \u064a\u0639\u0645\u0644 \u0639\u0646\u062f \u062a\u064a\u0627\u0631 \u064a\u062a\u062c\u0627\u0648\u0632 1.05 A.<\/li>\n<li>\u0627\u062e\u062a\u0628\u0631 \u0627\u0644\u0639\u0646\u0635\u0631 \u0627\u0644\u0641\u0648\u0631\u064a. \u0644\u0625\u0639\u062f\u0627\u062f \u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0639\u0646\u062f 10\u060c \u0633\u064a\u0639\u0637\u064a \u0642\u064a\u0645\u0629 2.5A.<\/li>\n<\/ul>\n<h3>\u0644\u0623\u064a \u062a\u0635\u0646\u064a\u0641 \u0645\u0646 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u064a\u064f\u0648\u0635\u0649 \u0628\u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629\u061f<\/h3>\n<p>\u0647\u0646\u0627\u0643 \u0627\u062e\u062a\u0644\u0627\u0641\u0627\u062a \u0641\u064a \u0627\u0644\u0645\u0645\u0627\u0631\u0633\u0629 \u062a\u0639\u062a\u0645\u062f \u0639\u0644\u0649 \u0627\u0644\u0645\u0631\u0627\u0641\u0642 \u0648\u0623\u0647\u0645\u064a\u0629 \u0627\u0644\u0648\u062d\u062f\u0629\u060c \u0648\u0644\u0643\u0646 \u0627\u0644\u062d\u062f\u0648\u062f \u0627\u0644\u062a\u0627\u0644\u064a\u0629 \u062a\u064f\u062a\u0628\u0639 \u0639\u0645\u0648\u0645\u064b\u0627. \u0644\u0623\u0642\u0644 \u0645\u0646 \u062d\u0648\u0627\u0644\u064a 1 MVA\u060c \u064a\u0645\u0643\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0641\u064a\u0648\u0632\u0627\u062a \u0648\u0627\u0644\u0645\u0631\u062d\u0644\u0627\u062a \u0627\u0644\u0632\u0627\u0626\u062f\u0629. \u0644\u0644\u0642\u064a\u0645 \u0645\u0646 \u062d\u0648\u0627\u0644\u064a 1 \u0625\u0644\u0649 5 MVA\u060c \u062a\u0628\u062f\u0623 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629 \u0641\u064a \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0641\u064a \u0627\u0644\u0648\u062d\u062f\u0627\u062a \u0627\u0644\u062d\u0631\u062c\u0629 \u0648\u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u063a\u0630\u064a \u0627\u0644\u0645\u0635\u0646\u0639. \u0644\u0644\u0642\u064a\u0645 \u0627\u0644\u062a\u064a \u062a\u0632\u064a\u062f \u0639\u0646 5 \u0648\u062e\u0627\u0635\u0629 \u0644\u062a\u0644\u0643 \u0627\u0644\u062a\u064a \u062a\u0632\u064a\u062f \u0639\u0646 \u062d\u0648\u0627\u0644\u064a 10 MVA\u060c \u062a\u0635\u0628\u062d \u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629 \u0625\u0644\u0632\u0627\u0645\u064a\u064b\u0627. \u0647\u0646\u0627\u0643 \u0627\u0633\u062a\u062b\u0646\u0627\u0646 \u0644\u0647\u0630\u0647 \u0627\u0644\u0642\u0627\u0639\u062f\u0629. \u0623\u062d\u062f\u0647\u0645\u0627 \u0647\u0648 \u0639\u0646\u062f\u0645\u0627 \u062a\u0643\u0648\u0646 \u0627\u0644\u0645\u062d\u0648\u0644\u0629 \u0645\u0646 \u0627\u0644\u0646\u0648\u0639 \u0627\u0644\u0630\u064a \u064a\u0643\u0648\u0646 \u0627\u0633\u062a\u0628\u062f\u0627\u0644\u0647 \u0639\u0645\u0644\u064a\u0629 \u0645\u0639\u0642\u062f\u0629 \u0648\/\u0623\u0648 \u0645\u0643\u0644\u0641\u0629 \u0644\u0644\u063a\u0627\u064a\u0629. \u0633\u0628\u0628 \u0622\u062e\u0631 \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0643\u0648\u0646 \u0645\u0633\u062a\u0648\u0649 \u0645\u0646\u062e\u0641\u0636 \u0645\u0646 \u062a\u064a\u0627\u0631\u0627\u062a \u0627\u0644\u0623\u0639\u0637\u0627\u0644 \u0645\u0642\u0627\u0631\u0646\u0629 \u0628\u0633\u0639\u0629 \u0627\u0644\u0645\u062d\u0648\u0644\u0629.<\/p>\n<h2>\u0627\u0644\u0645\u0631\u0627\u062c\u0639<\/h2>\n<ol>\n<li><a href=\"https:\/\/electrical-engineering-portal.com\/download-center\/books-and-guides\/power-substations\/transformer-differential-protection-scheme\" rel=\"nofollow noopener\" target=\"_blank\">\u0628\u0648\u0627\u0628\u0629 \u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 - \u0645\u062e\u0637\u0637 \u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629<\/a><\/li>\n<li><a href=\"https:\/\/circuitglobe.com\/differential-protection-of-a-transformer.html\" rel=\"nofollow noopener\" target=\"_blank\">\u062f\u0627\u0626\u0631\u0629 \u0627\u0644\u0643\u0631\u0629 - \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629 \u0644\u0645\u062d\u0648\u0644\u0629<\/a><\/li>\n<li><a href=\"https:\/\/www.electrical4u.com\/differential-protection-of-transformer-differential-relays\/\" rel=\"nofollow noopener\" target=\"_blank\">Electrical4U - \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629 \u0644\u0644\u0645\u062d\u0648\u0644 \u0648\u0627\u0644\u0645\u0631\u062d\u0644\u0627\u062a \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629<\/a><\/li>\n<li><a href=\"https:\/\/standards.ieee.org\/\" rel=\"nofollow noopener\" target=\"_blank\">\u062c\u0645\u0639\u064a\u0629 \u0645\u0639\u0627\u064a\u064a\u0631 IEEE - IEEE Std C37.91\u060c \u062f\u0644\u064a\u0644 \u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0645\u0631\u062d\u0644\u0627\u062a \u0627\u0644\u0648\u0627\u0642\u064a\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629<\/a><\/li>\n<li><a href=\"https:\/\/www.selinc.com\/\" rel=\"nofollow noopener\" target=\"_blank\">SEL - \u0645\u0644\u0627\u062d\u0638\u0627\u062a \u062a\u0637\u0628\u064a\u0642 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629 \u0644\u0644\u0645\u062d\u0648\u0644<\/a><\/li>\n<\/ol>\n<h2>\u0627\u0644\u062e\u0627\u062a\u0645\u0629<\/h2>\n<p>\u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629 \u0641\u064a \u062d\u062f \u0630\u0627\u062a\u0647\u0627 \u0628\u0633\u064a\u0637\u0629: \u0642\u0627\u0631\u0646 \u0627\u0644\u0645\u062f\u062e\u0644\u0627\u062a \u0628\u0627\u0644\u0645\u062e\u0631\u062c\u0627\u062a\u060c \u0648\u0627\u0636\u0628\u0637 \u0627\u0644\u0639\u062a\u0628\u0629 \u0628\u0637\u0631\u064a\u0642\u0629 \u0644\u0627 \u062a\u064f\u0641\u0639\u0644 \u0641\u064a\u0647\u0627 \u0627\u0644\u062a\u0628\u0627\u064a\u0646\u0627\u062a \u0627\u0644\u0639\u0627\u062f\u064a\u0629 \u062d\u0645\u0627\u064a\u062a\u0643. \u0627\u0644\u0645\u0634\u0643\u0644\u0629 \u062a\u0643\u0645\u0646 \u0641\u064a \u0627\u0644\u062a\u0641\u0627\u0635\u064a\u0644: \u0627\u0644\u062a\u0631\u062a\u064a\u0628 \u0627\u0644\u0635\u062d\u064a\u062d \u0644\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u062d\u0648\u0644\u060c \u0645\u0637\u0627\u0628\u0642\u0629 \u0627\u0644\u0646\u0633\u0628\u060c \u0641\u0644\u062a\u0631 \u0627\u0644\u062a\u0633\u0644\u0633\u0644 \u0627\u0644\u0635\u0641\u0631\u064a\u060c \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0643\u062a\u0644\u0629 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Although feeders are reclosable and busbars can be separated, a transformer failure which has not been automatically cleared leads to ruptured tank, oil catching fire [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":11656,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-11655","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/posts\/11655","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/comments?post=11655"}],"version-history":[{"count":3,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/posts\/11655\/revisions"}],"predecessor-version":[{"id":11661,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/posts\/11655\/revisions\/11661"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/media\/11656"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/media?parent=11655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/categories?post=11655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/tags?post=11655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}