{"id":309,"date":"2026-08-22T02:34:13","date_gmt":"2026-08-21T18:34:13","guid":{"rendered":"https:\/\/q8bbzjnpm5.wpdns.site\/?p=309"},"modified":"2026-08-29T23:43:39","modified_gmt":"2026-08-29T15:43:39","slug":"buyer-guide-for-oil-filled-transformer","status":"publish","type":"post","link":"https:\/\/subian-electric.com\/ar\/news\/buyer-guide-for-oil-filled-transformer\/","title":{"rendered":"\u062f\u0644\u064a\u0644 \u0627\u0644\u0645\u0634\u062a\u0631\u064a \u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0632\u064a\u062a"},"content":{"rendered":"<p>\u0642\u0628\u0644 \u062b\u0644\u0627\u062b\u0629 \u0623\u0634\u0647\u0631 \u0645\u0646 \u062a\u0648\u0633\u064a\u0639 \u0627\u0644\u0645\u0635\u0646\u0639\u060c \u062a\u0644\u0642\u062a \u0645\u062f\u064a\u0631\u0629 \u0627\u0644\u0645\u0634\u062a\u0631\u064a\u0627\u062a \u0645\u0646 \u0646\u064a\u062c\u064a\u0631\u064a\u0627 \u0648\u0631\u0642\u0629 \u0639\u0631\u0636 \u0623\u0633\u0639\u0627\u0631 \u062a\u0645 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\u0633\u064a\u062a\u062c\u0627\u0648\u0632 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0632\u064a\u062a \u0639\u0646\u062f \u0627\u0644\u062a\u0633\u0644\u064a\u0645. \u0647\u0630\u0627 \u0647\u0648 \u0645\u0627 \u064a\u0631\u0643\u0632 \u0639\u0644\u064a\u0647 \u0627\u0644\u062f\u0644\u064a\u0644 \u0644\u0644\u0645\u0634\u062a\u0631\u064a\u0646 \u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0632\u064a\u062a.<\/p>\n<blockquote><p>\u0627\u0644\u0625\u062c\u0627\u0628\u0629 \u0628\u0633\u064a\u0637\u0629: \u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0632\u064a\u062a \u0647\u064a \u0623\u0633\u0627\u0633\u064b\u0627 \u0645\u062d\u0648\u0644\u0627\u062a \u062a\u0648\u0632\u064a\u0639 \u0623\u0648 \u0645\u062d\u0648\u0644\u0627\u062a \u062a\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u0632\u064a\u062a \u0627\u0644\u0645\u0639\u062f\u0646\u064a \u0644\u0644\u062a\u0628\u0631\u064a\u062f \u0648\u0639\u0632\u0644 \u0627\u0644\u0642\u0644\u0628 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center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-310\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/Buyer-Guide-For-Oil-Filled-Transformer.webp\" alt=\"Buyer Guide For Oil Filled Transformer\" width=\"1448\" height=\"1086\" \/><\/p>\n<hr \/>\n<h2 id=\"definitions\">\u0627\u0644\u062a\u0639\u0631\u064a\u0641\u0627\u062a \u0648\u0627\u0644\u0645\u0635\u0637\u0644\u062d\u0627\u062a \u0627\u0644\u062a\u064a \u064a\u062c\u0628 \u0623\u0646 \u062a\u0639\u0631\u0641\u0647\u0627<\/h2>\n<p>\u062a\u062a\u062d\u062f\u062b \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0644\u063a\u062a\u0647\u0627 \u0627\u0644\u062e\u0627\u0635\u0629 \u0645\u0646 \u0627\u0644\u0627\u062e\u062a\u0635\u0627\u0631\u0627\u062a\u060c \u0648\u062d\u0631\u0641 \u062e\u0627\u0637\u0626 \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0643\u0644\u0641\u0643 \u0627\u0644\u0643\u062b\u064a\u0631 \u0645\u0646 \u0627\u0644\u0645\u0627\u0644. 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\u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c Dyn11 (\u062f\u0644\u062a\u0627 HV \u0648\u0646\u062c\u0645\u0629 LV \u0645\u0639 30 \u062f\u0631\u062c\u0629 \u0645\u0646 \u0627\u0646\u0632\u064a\u0627\u062d \u0627\u0644\u0637\u0648\u0631).<\/li>\n<\/ul>\n<p>\u062a\u0623\u0643\u062f \u0645\u0646 \u0623\u0646\u0643 \u062a\u062a\u0630\u0643\u0631 \u0647\u0630\u0647 \u0627\u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u062e\u0645\u0633\u061b \u064a\u062c\u0628 \u0623\u0646 \u064a\u0642\u062f\u0645 \u0644\u0643 \u0643\u0644 \u0645\u0648\u0631\u062f \u0647\u0630\u0647 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0641\u064a \u0648\u0631\u0642\u0629 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0647\u060c \u0648\u064a\u062c\u0628 \u0623\u0646 \u062a\u062d\u062f\u062f \u0627\u0644\u0639\u0631\u0648\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 \u0631\u0642\u0645\u064a\u0646 \u0644\u0644\u062e\u0633\u0627\u0631\u0629 \u0623\u064a\u0636\u064b\u0627.<\/p>\n<h2 id=\"sizing\">\u0627\u0644\u062e\u0637\u0648\u0629 1: \u0642\u0645 \u0628\u062d\u062c\u0645 \u0627\u0644\u0645\u062d\u0648\u0644 \u0628\u0634\u0643\u0644 \u0635\u062d\u064a\u062d<\/h2>\n<p>\u064a\u0624\u062f\u064a \u0627\u0644\u062a\u0642\u0644\u064a\u0644 \u0645\u0646 \u0627\u0644\u062d\u062c\u0645 \u0625\u0644\u0649 \u0627\u0631\u062a\u0641\u0627\u0639 \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0648\u062a\u0633\u0631\u064a\u0639 \u0627\u0646\u0647\u064a\u0627\u0631 \u0627\u0644\u0639\u0632\u0644\u061b \u0628\u064a\u0646\u0645\u0627 \u064a\u0624\u062f\u064a \u0627\u0644\u0632\u064a\u0627\u062f\u0629 \u0641\u064a \u0627\u0644\u062d\u062c\u0645 \u0625\u0644\u0649 \u062a\u0643\u0627\u0644\u064a\u0641 \u0625\u0636\u0627\u0641\u064a\u0629 \u0648\u0632\u064a\u0627\u062f\u0629 \u062e\u0633\u0627\u0626\u0631 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0641\u0627\u0631\u063a. \u064a\u0628\u062f\u0623 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u062d\u062c\u0645 \u0627\u0644\u0635\u062d\u064a\u062d \u0628\u0627\u0644\u0637\u0644\u0628 \u0627\u0644\u0645\u0642\u0627\u0633 \u0648\u0644\u064a\u0633 \u0628\u062a\u0635\u0646\u064a\u0641\u0627\u062a \u0644\u0648\u062d\u0629 \u0627\u0644\u0627\u0633\u0645. \u0627\u062c\u0645\u0639 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0645\u062a\u0635\u0644\u060c \u0648\u0637\u0628\u0642 \u0639\u0627\u0645\u0644 \u062a\u0646\u0648\u0639 \u064a\u062a\u0631\u0627\u0648\u062d \u0639\u0627\u062f\u0629 \u0628\u064a\u0646 0.6-0.8 \u0644\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0627\u0644\u0645\u062e\u062a\u0644\u0637\u0629\u060c \u0648\u062d\u062f\u062f \u0627\u0644\u062d\u062c\u0645 \u0644\u064a\u0643\u0648\u0646 \u0639\u0646\u062f 70-85% \u0645\u0646 \u0633\u0639\u0629 \u0627\u0644\u0645\u062d\u0648\u0644.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0645\u062a\u0635\u0644 (kW)<\/th>\n<th>\u0639\u0627\u0645\u0644 \u0627\u0644\u062a\u0646\u0648\u0639<\/th>\n<th>\u0627\u0644\u0630\u0631\u0648\u0629 \u0627\u0644\u0645\u062a\u0648\u0642\u0639\u0629 (kVA)<\/th>\n<th>\u0627\u0644\u062a\u0635\u0646\u064a\u0641 \u0627\u0644\u0645\u0648\u0635\u0649 \u0628\u0647<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>120 kW \u0645\u062e\u062a\u0644\u0637<\/td>\n<td>0.7<\/td>\n<td>\u2248 90-110<\/td>\n<td>160 \u0643.\u0641.\u0623<\/td>\n<\/tr>\n<tr>\n<td>250 kW \u0645\u062e\u062a\u0644\u0637<\/td>\n<td>0.7<\/td>\n<td>\u2248 190-220<\/td>\n<td>250 \u0643.\u0641.\u0623<\/td>\n<\/tr>\n<tr>\n<td>500 kW \u0645\u062e\u062a\u0644\u0637<\/td>\n<td>0.75<\/td>\n<td>\u2248 380-450<\/td>\n<td>500 \u0643.\u0641.\u0623<\/td>\n<\/tr>\n<tr>\n<td>900 kW \u0645\u062e\u062a\u0644\u0637<\/td>\n<td>0.75<\/td>\n<td>\u2248 680-820<\/td>\n<td>800 \u0643.\u0641.\u0623<\/td>\n<\/tr>\n<tr>\n<td>1,500 kW \u0645\u062e\u062a\u0644\u0637<\/td>\n<td>0.8<\/td>\n<td>\u2248 1,200-1,400<\/td>\n<td>1,600 \u0643.\u0641.\u0623<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0625\u0630\u0627 \u0643\u0627\u0646 \u0645\u0644\u0641 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062e\u0627\u0635 \u0628\u0643 \u064a\u062a\u0643\u0648\u0646 \u0645\u0646 \u0637\u0644\u0628\u0627\u062a \u0645\u062d\u0631\u0643\u0627\u062a \u0645\u062a\u0632\u0627\u0645\u0646\u0629\u060c \u064a\u062c\u0628 \u062a\u0648\u0641\u064a\u0631 \u0645\u0633\u0627\u062d\u0629 \u0625\u0636\u0627\u0641\u064a\u0629 \u0644\u0644\u0627\u0646\u062f\u0641\u0627\u0639\u061b \u0648\u0645\u0639 \u0630\u0644\u0643\u060c \u0627\u062a\u0628\u0639 \u0627\u0644\u062c\u062f\u0648\u0644 \u0648\u062f\u0639 \u0627\u0644\u0628\u0627\u0626\u0639 \u064a\u0624\u0643\u062f \u0628\u0645\u0644\u0627\u062d\u0638\u0629 \u062a\u062f\u0641\u0642 \u0627\u0644\u062d\u0645\u0644.<\/p>\n<h2 id=\"core\">\u0627\u0644\u062e\u0637\u0648\u0629 2: \u0627\u062e\u062a\u0631 \u0645\u0627\u062f\u0629 \u0627\u0644\u0642\u0644\u0628 (CRGO \u0645\u0642\u0627\u0628\u0644 \u063a\u064a\u0631 \u0645\u062a\u0628\u0644\u0648\u0631)<\/h2>\n<p>\u0627\u0644\u0642\u0644\u0628 \u0647\u0648 \u0627\u0644\u0645\u0643\u0627\u0646 \u0627\u0644\u0630\u064a \u062a\u064f\u0643\u0633\u0628 \u0641\u064a\u0647 \u0645\u0639\u0631\u0643\u0629 \u0627\u0644\u0643\u0641\u0627\u0621\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u062f\u0649 \u0627\u0644\u0637\u0648\u064a\u0644. \u0647\u0646\u0627\u0643 \u062e\u064a\u0627\u0631\u0627\u0646 \u0631\u0626\u064a\u0633\u064a\u0627\u0646 \u0644\u0645\u062d\u0648\u0651\u0644\u0627\u062a \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0645\u0645\u0644\u0648\u0621\u0629 \u0628\u0627\u0644\u0632\u064a\u062a:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0645\u0627\u062f\u0629 \u0627\u0644\u0642\u0644\u0628<\/th>\n<th>\u062e\u0633\u0627\u0631\u0629 \u0639\u062f\u0645 \u0627\u0644\u062d\u0645\u0644 (400 kVA)<\/th>\n<th>\u0627\u0644\u062a\u0643\u0644\u0641\u0629 \u0627\u0644\u0623\u0648\u0644\u0649<\/th>\n<th>\u0627\u0644\u0623\u0641\u0636\u0644 \u0644\u0640<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0641\u0648\u0644\u0627\u0630 \u0633\u064a\u0644\u064a\u0643\u0648\u0646 CRGO (\u062f\u0631\u062c\u0629 30ZH110)<\/td>\n<td>\u2248 600-700 \u0648\u0627\u0637<\/td>\n<td>\u062e\u0637 \u0627\u0644\u0623\u0633\u0627\u0633<\/td>\n<td>\u0627\u0644\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629\u060c \u0623\u0642\u0644 \u062a\u0643\u0644\u0641\u0629 \u0631\u0623\u0633 \u0627\u0644\u0645\u0627\u0644<\/td>\n<\/tr>\n<tr>\n<td>\u0633\u0628\u064a\u0643\u0629 \u063a\u064a\u0631 \u0645\u062a\u0628\u0644\u0648\u0631\u0629 (2605SA1)<\/td>\n<td>\u2248 250-320 \u0648\u0627\u0637<\/td>\n<td>+25\u201340%<\/td>\n<td>\u062d\u0645\u0644 \u062e\u0641\u064a\u0641 \u0639\u0627\u0644\u064a \u0627\u0644\u0645\u062f\u0629\u060c \u0645\u0634\u0627\u0631\u064a\u0639 \u062e\u0636\u0631\u0627\u0621<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0642\u0644\u0644 \u0627\u0644\u0633\u0628\u0627\u0626\u0643 \u063a\u064a\u0631 \u0627\u0644\u0645\u062a\u0628\u0644\u0648\u0631\u0629 \u0645\u0646 \u062e\u0633\u0627\u0631\u0629 \u0639\u062f\u0645 \u0627\u0644\u062d\u0645\u0644 \u0628\u0646\u0633\u0628\u0629 60-70%\u060c \u0645\u0645\u0627 \u064a\u0643\u0648\u0646 \u0645\u0641\u064a\u062f\u064b\u0627 \u0644\u0644\u0645\u062d\u0648\u0651\u0644\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0639\u0645\u0644 \u0641\u064a \u062d\u0627\u0644\u0629 \u0627\u0644\u062e\u0645\u0648\u0644 \u0645\u0639\u0638\u0645 \u0627\u0644\u064a\u0648\u0645 \u0641\u064a \u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0630\u0627\u062a \u062d\u0645\u0644 \u062e\u0641\u064a\u0641 \u0645\u062b\u0644 \u0627\u0644\u0645\u062d\u0637\u0627\u062a \u0627\u0644\u0641\u0631\u0639\u064a\u0629 \u0627\u0644\u0631\u064a\u0641\u064a\u0629 \u0623\u0648 \u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0627\u0644\u062a\u064a \u062a\u0639\u0645\u0644 \u0641\u0642\u0637 \u0641\u064a \u0639\u0637\u0644\u0627\u062a \u0646\u0647\u0627\u064a\u0629 \u0627\u0644\u0623\u0633\u0628\u0648\u0639. \u0648\u0645\u0639 \u0630\u0644\u0643\u060c \u0625\u0630\u0627 \u0643\u0627\u0646 \u0645\u0646 \u0627\u0644\u0645\u0641\u062a\u0631\u0636 \u0623\u0646 \u064a\u0639\u0645\u0644 \u0627\u0644\u0645\u062d\u0648\u0644 \u062a\u0642\u0631\u064a\u0628\u064b\u0627 \u0639\u0646\u062f \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0643\u0627\u0645\u0644 \u0641\u064a \u0645\u0639\u0638\u0645 \u0627\u0644\u062d\u0627\u0644\u0627\u062a\u060c \u0641\u0642\u062f \u062a\u0643\u0648\u0646 \u062e\u0633\u0627\u0631\u0629 \u0627\u0644\u062d\u0645\u0644 \u0623\u0643\u062b\u0631 \u0623\u0647\u0645\u064a\u0629 \u0645\u0642\u0627\u0631\u0646\u0629 \u0628\u062e\u0633\u0627\u0631\u0629 \u0639\u062f\u0645 \u0627\u0644\u062d\u0645\u0644\u060c \u0648\u0642\u062f \u064a\u0643\u0648\u0646 CRGO \u0627\u0633\u062a\u062b\u0645\u0627\u0631\u064b\u0627 \u0645\u0639\u0642\u0648\u0644\u064b\u0627. \u0642\u0627\u0631\u0646 \u0628\u064a\u0646 \u0646\u0648\u0639\u064a \u0627\u0644\u062e\u0633\u0627\u0626\u0631 \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0623\u062d\u0645\u0627\u0644 \u0648\u062a\u0639\u0631\u0641\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 (\u062d\u0648\u0627\u0644\u064a 0.08-0.20 \u062f\u0648\u0644\u0627\u0631 \u0623\u0645\u0631\u064a\u0643\u064a\/kWh \u0641\u064a \u0627\u0644\u0645\u062a\u0648\u0633\u0637 \u0639\u0627\u0644\u0645\u064a\u064b\u0627).<\/p>\n<h2 id=\"cooling\">\u0627\u0644\u062e\u0637\u0648\u0629 3: \u0627\u062e\u062a\u0631 \u0641\u0626\u0629 \u0627\u0644\u062a\u0628\u0631\u064a\u062f<\/h2>\n<p>\u064a\u062a\u0645 \u0627\u0644\u0625\u0634\u0627\u0631\u0629 \u0625\u0644\u0649 \u062a\u0635\u0646\u064a\u0641 \u0627\u0644\u062a\u0628\u0631\u064a\u062f \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0631\u0645\u0632 \u0645\u0643\u0648\u0646 \u0645\u0646 \u0623\u0631\u0628\u0639\u0629 \u0623\u062d\u0631\u0641. \u0641\u064a \u0645\u0639\u0638\u0645 \u0627\u0644\u062d\u0627\u0644\u0627\u062a\u060c \u0633\u064a\u0643\u0648\u0646 \u0644\u062f\u0649 \u0627\u0644\u0645\u0633\u062a\u0647\u0644\u0643\u064a\u0646 \u062e\u064a\u0627\u0631\u0627\u0646 \u0633\u064a\u0624\u062b\u0631\u0627\u0646 \u0639\u0644\u0649 \u0643\u0644 \u0645\u0646 \u0627\u0644\u062a\u0643\u0644\u0641\u0629 \u0627\u0644\u0623\u0648\u0644\u0649 \u0648\u0633\u0639\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0645\u0633\u062a\u0645\u0631\u0629.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0641\u0626\u0629 \u0627\u0644\u062a\u0628\u0631\u064a\u062f<\/th>\n<th>\u0643\u064a\u0641 \u062a\u0639\u0645\u0644<\/th>\n<th>\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0633\u0639\u0629<\/th>\n<th>\u0627\u0644\u0635\u064a\u0627\u0646\u0629<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0623\u0648\u0646\u0627\u0646<\/td>\n<td>\u0632\u064a\u062a \u0637\u0628\u064a\u0639\u064a\u060c \u0647\u0648\u0627\u0621 \u0637\u0628\u064a\u0639\u064a \u2014 \u0628\u062f\u0648\u0646 \u0645\u0636\u062e\u0627\u062a \u0623\u0648 \u0645\u0631\u0627\u0648\u062d<\/td>\n<td>\u062a\u0635\u0646\u064a\u0641 \u0623\u0633\u0627\u0633\u064a<\/td>\n<td>\u0644\u0627 \u0634\u064a\u0621 (\u0633\u0644\u0628\u064a)<\/td>\n<\/tr>\n<tr>\n<td>\u0623\u0648\u0646\u0627\u0641<\/td>\n<td>\u0632\u064a\u062a \u0637\u0628\u064a\u0639\u064a\u060c \u0647\u0648\u0627\u0621 \u0645\u0636\u063a\u0648\u0637 \u2014 \u062a\u0628\u062f\u0623 \u0627\u0644\u0645\u0631\u0627\u0648\u062d \u0639\u0646\u062f \u0646\u0642\u0637\u0629 \u0636\u0628\u0637 \u0627\u0644\u062d\u0631\u0627\u0631\u0629<\/td>\n<td>\u0633\u0639\u0629 \u0645\u0633\u062a\u0645\u0631\u0629 +25\u201333%<\/td>\n<td>\u0645\u062d\u0627\u0645\u0644 \u0627\u0644\u0645\u0631\u0648\u062d\u0629\u060c \u0627\u0644\u0645\u0641\u0627\u062a\u064a\u062d \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629\u060c \u0627\u0644\u062a\u0631\u0645\u0648\u0633\u062a\u0627\u062a<\/td>\n<\/tr>\n<tr>\n<td>\u0623\u0648\u0641\u0627\u0641<\/td>\n<td>\u0632\u064a\u062a \u0645\u0636\u063a\u0648\u0637\u060c \u0647\u0648\u0627\u0621 \u0645\u0636\u063a\u0648\u0637 \u2014 \u0645\u0636\u062e\u0629 + \u0645\u0631\u0627\u0648\u062d<\/td>\n<td>\u0623\u0639\u0644\u0649 \u062a\u0635\u0646\u064a\u0641 \u0644\u062d\u062c\u0645 \u0627\u0644\u062e\u0632\u0627\u0646<\/td>\n<td>\u062e\u062f\u0645\u0629 \u0627\u0644\u0645\u0636\u062e\u0629 \u0648\u0627\u0644\u0645\u0631\u0648\u062d\u0629<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 1,000 kVA\u060c \u0641\u0625\u0646 \u062e\u064a\u0627\u0631 ONAN \u064a\u0648\u0641\u0631 \u062d\u0648\u0627\u0644\u064a $2,000-3,000 \u0641\u064a \u062a\u0643\u0644\u0641\u0629 \u0627\u0644\u0634\u0631\u0627\u0621 \u0645\u0642\u0627\u0631\u0646\u0629 \u0628\u062e\u064a\u0627\u0631 ONAF \u0628\u0646\u0641\u0633 \u0627\u0644\u0633\u0639\u0629. \u0648\u0645\u0639 \u0630\u0644\u0643\u060c \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0624\u062c\u0644 \u062e\u064a\u0627\u0631 ONAF \u0634\u0631\u0627\u0621 \u0627\u0644\u0645\u062d\u0648\u0644 \u0627\u0644\u062a\u0627\u0644\u064a \u0639\u0646\u062f\u0645\u0627 \u062a\u0632\u062f\u0627\u062f \u0630\u0631\u0648\u0629 \u0627\u0644\u0637\u0644\u0628. \u0644\u0630\u0644\u0643\u060c \u064a\u062c\u0628 \u0645\u0631\u0627\u0639\u0627\u0629 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u062f\u0648\u0631\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 \u0627\u0644\u0645\u0631\u0648\u062d\u0629 \u0648\u062d\u062c\u0645\u0647 \u0627\u0644\u0623\u0635\u063a\u0631 \u0642\u0628\u0644 \u0627\u062a\u062e\u0627\u0630 \u0642\u0631\u0627\u0631 \u0628\u0634\u0623\u0646 \u0627\u0644\u062e\u064a\u0627\u0631 \u0627\u0644\u0630\u064a \u064a\u062c\u0628 \u0627\u062e\u062a\u064a\u0627\u0631\u0647.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-311\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/5-key-steps-to-choose-the-right-transformer.webp\" alt=\"5 key steps to choose the right transformer\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"accessories\">\u0627\u0644\u062e\u0637\u0648\u0629 4: \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0644\u062d\u0642\u0627\u062a \u0648\u0645\u063a\u064a\u0631 \u0627\u0644\u062a\u0648\u0635\u064a\u0644<\/h2>\n<p>\u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u062a\u064a \u064a\u062a\u0643\u0648\u0646 \u0645\u0646\u0647\u0627 \u0627\u0644\u0645\u062d\u0648\u0644 \u0647\u064a \u062c\u0632\u0621 \u0641\u0642\u0637 \u0645\u0646 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0644\u0623\u0646 \u0627\u0644\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0645\u0633\u0627\u0639\u062f\u0629 \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0636\u064a\u0641 \u0645\u0627 \u064a\u0635\u0644 \u0625\u0644\u0649 25 \u0641\u064a \u0627\u0644\u0645\u0626\u0629 \u0645\u0646 \u0627\u0644\u062a\u0643\u0644\u0641\u0629 \u0627\u0644\u0643\u0627\u0645\u0644\u0629 \u0644\u0644\u0645\u062d\u0648\u0644. \u062a\u0634\u0645\u0644 \u0645\u062c\u0645\u0648\u0639\u0629 \u0627\u0644\u0645\u0644\u062d\u0642\u0627\u062a \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629 \u0645\u0642\u064a\u0627\u0633 \u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0632\u064a\u062a\u060c \u062d\u0633\u0627\u0633\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0644\u0644\u0632\u064a\u062a \u0648\u0627\u0644\u0645\u0644\u0641\u0627\u062a\u060c \u0635\u0645\u0627\u0645 \u0627\u0644\u0623\u0645\u0627\u0646\u060c \u0645\u0631\u062d\u0644 \u0628\u0648\u062e\u0648\u0644\u0632 (\u0641\u064a \u062d\u0627\u0644\u0629 \u0648\u062c\u0648\u062f \u063a\u0644\u0627\u0641 \u0644\u0644\u062e\u0632\u0627\u0646) \u0648\u0645\u062e\u0632\u0646 \u0645\u0632\u0648\u062f \u0628\u062c\u0647\u0627\u0632 \u0647\u0644\u0627\u0645 \u0627\u0644\u0633\u064a\u0644\u064a\u0643\u0627. \u064a\u062c\u0628 \u0627\u062a\u062e\u0627\u0630 \u0647\u0630\u0647 \u0627\u0644\u0642\u0631\u0627\u0631\u0627\u062a \u0628\u062d\u0643\u0645\u0629:<\/p>\n<ul>\n<li>\u0645\u063a\u064a\u0631 \u0627\u0644\u062a\u0648\u0635\u064a\u0644: \u0645\u063a\u064a\u0631 \u0627\u0644\u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u0645\u0646\u0641\u0635\u0644\u060c \u062e\u0627\u0631\u062c \u0627\u0644\u062f\u0627\u0626\u0631\u0629 \u0647\u0648 \u0627\u0644\u062e\u064a\u0627\u0631 \u0627\u0644\u0623\u0631\u062e\u0635\u060c \u0628\u064a\u0646\u0645\u0627 \u064a\u0636\u064a\u0641 \u0627\u0644\u0645\u063a\u064a\u0631 \u0627\u0644\u0645\u062a\u0635\u0644 \u0639\u0628\u0631 \u0627\u0644\u0625\u0646\u062a\u0631\u0646\u062a \u062a\u0643\u0644\u0641\u0629 \u0625\u0636\u0627\u0641\u064a\u0629 \u062a\u062a\u0631\u0627\u0648\u062d \u0628\u064a\u0646 $2,000 \u2013 $6,000 \u0644\u0645\u062d\u0648\u0644 \u0628\u0642\u062f\u0631\u0629 1,000 kVA \u0648\u064a\u062d\u062a\u0627\u062c \u0641\u0642\u0637 \u0641\u064a \u062d\u0627\u0644\u0629 \u062a\u0642\u0644\u0628\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u062e\u0644\u0627\u0644 \u0627\u0644\u064a\u0648\u0645.<\/li>\n<li>\u0627\u0644\u0639\u0648\u0627\u0632\u0644: \u0647\u0644 \u0647\u064a \u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0628\u0648\u0631\u0633\u0644\u064a\u0646 \u0623\u0648 \u0627\u0644\u0645\u0631\u0643\u0628\u061f \u0648\u0647\u0644 \u0647\u064a \u0639\u0627\u062f\u064a\u0629 \u0623\u0645 \u0645\u0632\u0648\u062f\u0629 \u0628\u0645\u062d\u0648\u0644\u0627\u062a \u062a\u064a\u0627\u0631 \u0644\u0642\u064a\u0627\u0633 \u0627\u0644\u062c\u0647\u062f\u061f<\/li>\n<li>\u0627\u0644\u0645\u0631\u0627\u0642\u0628\u0629: \u0648\u0627\u062d\u062f\u0629 \u0645\u0646 \u0623\u0633\u0647\u0644 \u0627\u0644\u0637\u0631\u0642 \u0644\u0645\u0631\u0627\u0642\u0628\u0629 \u062d\u0627\u0644\u0629 \u0627\u0644\u0645\u062d\u0648\u0644 \u0647\u064a \u0634\u0631\u0627\u0621 \u0625\u0645\u0627 \u062c\u0647\u0627\u0632 DGA \u0628\u0633\u064a\u0637 \u0623\u0648 \u0645\u0633\u062a\u0634\u0639\u0631 \u0631\u0637\u0648\u0628\u0629 \u0639\u0628\u0631 \u0627\u0644\u0625\u0646\u062a\u0631\u0646\u062a\u060c \u0648\u0627\u0644\u0630\u064a \u064a\u0643\u0644\u0641 $1,500 \u2013 $8,000 \u0648\u0644\u0643\u0646\u0647 \u064a\u0639\u0648\u062f \u0628\u0627\u0644\u0646\u0641\u0639 \u0639\u0644\u0649 \u0646\u0641\u0633\u0647 \u0641\u064a \u0627\u0644\u0645\u063a\u0630\u064a\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629.<\/li>\n<\/ul>\n<h2 id=\"tests\">\u0627\u0644\u062e\u0637\u0648\u0629 5: \u0637\u0644\u0628 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u0635\u062d\u064a\u062d\u0629<\/h2>\n<p>\u062a\u0623\u0643\u062f \u062f\u0627\u0626\u0645\u064b\u0627 \u0645\u0646 \u0623\u0646 \u0627\u0644\u0627\u0642\u062a\u0628\u0627\u0633 \u0627\u0644\u0630\u064a \u062a\u0642\u0628\u0644\u0647 \u064a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u062a\u0642\u0631\u064a\u0631 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0631\u0648\u062a\u064a\u0646\u064a. \u0648\u0641\u0642\u064b\u0627 \u0644\u0640 IEC 60076-1\u060c \u064a\u062c\u0628 \u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u0631\u0648\u062a\u064a\u0646\u064a\u0629 \u0627\u0644\u062a\u0627\u0644\u064a\u0629: \u0642\u064a\u0627\u0633 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u0644\u0641\u0627\u062a\u060c \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0646\u0633\u0628\u0629 \u0627\u0644\u062c\u0647\u062f \u0648\u0645\u062c\u0645\u0648\u0639\u0629 \u0627\u0644\u0645\u062a\u062c\u0647\u0627\u062a\u060c \u0642\u064a\u0627\u0633 \u0641\u0642\u062f \u0627\u0644\u0637\u0627\u0642\u0629 \u0628\u062f\u0648\u0646 \u062d\u0645\u0644 \u0648\u0627\u0644\u062a\u064a\u0627\u0631\u060c \u0642\u064a\u0627\u0633 \u0641\u0642\u062f \u0627\u0644\u0637\u0627\u0642\u0629 \u0648\u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629\u060c \u0627\u062e\u062a\u0628\u0627\u0631 \u062a\u062d\u0645\u0644 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u0633\u062a\u062d\u062b \u0648\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062a\u0633\u0631\u0628. \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u0645\u062d\u0648\u0644 \u0645\u0644\u064a\u0626\u064b\u0627 \u0628\u0627\u0644\u0632\u064a\u062a\u060c \u062a\u0623\u0643\u062f \u0645\u0646 \u0623\u0646\u0643 \u062a\u0635\u0631 \u0623\u064a\u0636\u064b\u0627 \u0639\u0644\u0649 \u0634\u0647\u0627\u062f\u0629 \u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u0632\u064a\u062a \u0627\u0644\u062a\u064a \u062a\u0638\u0647\u0631 \u062c\u0647\u062f \u0627\u0646\u0647\u064a\u0627\u0631 \u064a\u0632\u064a\u062f \u0639\u0646 40 kV \u0648\u0641\u0642\u064b\u0627 \u0644\u0640 IEC 60156 \u062c\u0646\u0628\u064b\u0627 \u0625\u0644\u0649 \u062c\u0646\u0628 \u0645\u0639 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0631\u0637\u0648\u0628\u0629. \u064a\u062a\u0645 \u0639\u0627\u062f\u0629\u064b \u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u0646\u0648\u0639\u064a\u0629\u060c \u0645\u062b\u0644 \u0646\u0628\u0636\u0629 \u0627\u0644\u0628\u0631\u0642 (IEC 60076-4) \u0648\u0627\u0631\u062a\u0641\u0627\u0639 \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 (IEC 60076-2)\u060c \u0645\u0631\u0629 \u0648\u0627\u062d\u062f\u0629 \u0644\u0644\u062a\u0635\u0645\u064a\u0645 \u0648\u0628\u0627\u0644\u062a\u0627\u0644\u064a\u060c \u0641\u064a \u0645\u062b\u0644 \u0647\u0630\u0647 \u0627\u0644\u062d\u0627\u0644\u0627\u062a\u060c \u0627\u0637\u0644\u0628 \u0645\u0646 \u0627\u0644\u0645\u0635\u0646\u0639 \u062a\u0642\u062f\u064a\u0645 \u0627\u0644\u0634\u0647\u0627\u062f\u0629 \u0644\u062c\u0645\u064a\u0639 \u0646\u062a\u0627\u0626\u062c \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0646\u062a\u0645\u064a \u0625\u0644\u0649 \u0646\u0641\u0633 \u0639\u0627\u0626\u0644\u0629 \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0627\u062e\u062a\u0628\u0627\u0631<\/th>\n<th>\u0645\u0639\u064a\u0627\u0631<\/th>\n<th>\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u0642\u0628\u0648\u0644 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u0644\u0641\u0627\u062a<\/td>\n<td>IEC 60076-1<\/td>\n<td>\u062a\u0648\u0627\u0632\u0646 \u0627\u0644\u0637\u0648\u0631 \u0636\u0645\u0646 2%<\/td>\n<\/tr>\n<tr>\n<td>\u0646\u0633\u0628\u0629 \u0627\u0644\u062c\u0647\u062f \u0648\u0645\u062c\u0645\u0648\u0639\u0629 \u0627\u0644\u0645\u062a\u062c\u0647\u0627\u062a<\/td>\n<td>IEC 60076-1<\/td>\n<td>\u00b10.5% \u0639\u0644\u0649 \u062c\u0645\u064a\u0639 \u0627\u0644\u062a\u0648\u0635\u064a\u0644\u0627\u062a<\/td>\n<\/tr>\n<tr>\n<td>\u0641\u0642\u062f \u0627\u0644\u0637\u0627\u0642\u0629 \u0628\u062f\u0648\u0646 \u062d\u0645\u0644 \u0648\u0627\u0644\u062a\u064a\u0627\u0631<\/td>\n<td>IEC 60076-1<\/td>\n<td>\u0636\u0645\u0646 \u0648\u0631\u0642\u0629 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a +15%<\/td>\n<\/tr>\n<tr>\n<td>\u0641\u0642\u062f \u0627\u0644\u0637\u0627\u0642\u0629 \u0648\u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629<\/td>\n<td>IEC 60076-1<\/td>\n<td>\u0641\u0642\u062f \u0627\u0644\u0637\u0627\u0642\u0629 \u0636\u0645\u0646 \u0627\u0644\u062d\u062f\u0648\u062f\u061b \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u00b110%<\/td>\n<\/tr>\n<tr>\n<td>\u062a\u062d\u0645\u0644 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u0633\u062a\u062d\u062b<\/td>\n<td>IEC 60076-3<\/td>\n<td>\u0644\u0627 \u0627\u0646\u0647\u064a\u0627\u0631<\/td>\n<\/tr>\n<tr>\n<td>\u062a\u062d\u0645\u0644 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u062a\u0631\u062f\u062f \u0645\u0646 \u0645\u0635\u062f\u0631 \u0645\u0646\u0641\u0635\u0644<\/td>\n<td>IEC 60076-3<\/td>\n<td>\u0644\u0627 \u0627\u0646\u0647\u064a\u0627\u0631<\/td>\n<\/tr>\n<tr>\n<td>\u062c\u0647\u062f \u0627\u0646\u0647\u064a\u0627\u0631 \u0627\u0644\u0632\u064a\u062a<\/td>\n<td>IEC 60156<\/td>\n<td>&gt; 40 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"pricing\">\u0643\u064a\u0641\u064a\u0629 \u0642\u0631\u0627\u0621\u0629 \u0623\u0633\u0639\u0627\u0631 \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0645\u0645\u0644\u0648\u0621\u0629 \u0628\u0627\u0644\u0632\u064a\u062a<\/h2>\n<p>\u062a\u062e\u062a\u0644\u0641 \u0623\u0633\u0639\u0627\u0631 \u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u062a\u0648\u0632\u064a\u0639 \u0648\u0641\u0642\u064b\u0627 \u0644\u0633\u0639\u0629 \u0627\u0644\u0645\u062d\u0648\u0644. \u0641\u064a\u0645\u0627 \u064a\u0644\u064a \u0646\u0637\u0627\u0642\u0627\u062a \u0645\u062d\u0648\u0644\u0627\u062a CRGO \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629\u060c ONAN\u060c \u0645\u0646 \u0641\u0626\u0629 10 -35 kV \u0645\u0639 \u062a\u0642\u0627\u0631\u064a\u0631 \u0627\u062e\u062a\u0628\u0627\u0631 \u0642\u064a\u0627\u0633\u064a\u0629. \u064a\u062c\u0628 \u062a\u0648\u0642\u0639 \u0641\u0631\u0642 \u0641\u064a \u0627\u0644\u0623\u0633\u0639\u0627\u0631 \u064a\u062a\u0631\u0627\u0648\u062d \u0628\u064a\u0646 25-40 % \u0644\u0644\u0645\u0631\u0627\u0643\u0632 \u063a\u064a\u0631 \u0627\u0644\u0645\u062a\u0628\u0644\u0648\u0631\u0629 \u0648\u0623\u0643\u062b\u0631 \u0645\u0646 \u0630\u0644\u0643 \u0644\u0641\u0626\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0623\u0639\u0644\u0649.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0627\u0644\u062a\u0635\u0646\u064a\u0641<\/th>\n<th>\u0646\u0637\u0627\u0642 FOB \u0627\u0644\u0625\u0631\u0634\u0627\u062f\u064a<\/th>\n<th>\u0645\u0644\u0627\u062d\u0638\u0627\u062a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>50 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/td>\n<td>$1,200\u2013$2,600<\/td>\n<td>\u0623\u062d\u0627\u062f\u064a \u0627\u0644\u0637\u0648\u0631 \u0623\u0648 \u062b\u0644\u0627\u062b\u064a \u0627\u0644\u0637\u0648\u0631 \u0635\u063a\u064a\u0631<\/td>\n<\/tr>\n<tr>\n<td>100 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/td>\n<td>$2,000\u2013$4,500<\/td>\n<td>\u0634\u0627\u0626\u0639 \u0641\u064a \u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0631\u064a\u0641\u064a\u0629 \/ \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629 \u0627\u0644\u0635\u063a\u064a\u0631\u0629<\/td>\n<\/tr>\n<tr>\n<td>250 \u0643.\u0641.\u0623<\/td>\n<td>$4,500\u2013$9,000<\/td>\n<td>Small industrial<\/td>\n<\/tr>\n<tr>\n<td>400 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/td>\n<td>$8,000\u2013$16,000<\/td>\n<td>Most popular industrial size<\/td>\n<\/tr>\n<tr>\n<td>630 \u0643.\u0641.\u0623<\/td>\n<td>$12,000\u2013$22,000<\/td>\n<td>35 kV class adds ~15%<\/td>\n<\/tr>\n<tr>\n<td>1,000 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/td>\n<td>$18,000\u2013$38,000<\/td>\n<td>Amorphous + OLTC pushes to top of range<\/td>\n<\/tr>\n<tr>\n<td>2,500 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \u0623\u0645\u0628\u064a\u0631<\/td>\n<td>$40,000\u2013$80,000<\/td>\n<td>Power-class territory; prices vary by region<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Pricing differs according to specifications, brand, and market. The difference between a quote from a factory in China and a brand from Europe for the same kVA can be as much as 30 to 60%; therefore, compare based on included items rather than a price figure.<\/p>\n<h2 id=\"brands\">Brand Comparison and Where Price Differences Come From<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u0627\u0644\u0639\u0644\u0627\u0645\u0629 \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629<\/th>\n<th>\u0627\u0644\u0623\u0635\u0644<\/th>\n<th>Typical Position<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ABB<\/td>\n<td>Switzerland \/ Global<\/td>\n<td>Premium; full type-test documentation<\/td>\n<\/tr>\n<tr>\n<td>\u0633\u064a\u0645\u0646\u0632<\/td>\n<td>\u0623\u0644\u0645\u0627\u0646\u064a\u0627<\/td>\n<td>Premium; strong on large power units<\/td>\n<\/tr>\n<tr>\n<td>\u0634\u0646\u0627\u064a\u062f\u0631 \u0625\u0644\u0643\u062a\u0631\u064a\u0643<\/td>\n<td>\u0641\u0631\u0646\u0633\u0627<\/td>\n<td>Premium; distribution automation ecosystem<\/td>\n<\/tr>\n<tr>\n<td>\u0647\u064a\u062a\u0627\u0634\u064a \u0644\u0644\u0637\u0627\u0642\u0629<\/td>\n<td>Japan \/ Switzerland<\/td>\n<td>Premium; HVDC and grid-scale expertise<\/td>\n<\/tr>\n<tr>\n<td>GE \/ Prolec<\/td>\n<td>USA \/ Mexico<\/td>\n<td>Mid-premium; NEMA-focused offering<\/td>\n<\/tr>\n<tr>\n<td>Hyosung, Hyundai (Korea)<\/td>\n<td>Korea<\/td>\n<td>Mid-premium; strong utility track record<\/td>\n<\/tr>\n<tr>\n<td>Chinese manufacturers (e.g., Subian)<\/td>\n<td>\u0627\u0644\u0635\u064a\u0646<\/td>\n<td>Value; IEC-compliant with routine test reports<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Global brands like ABB, Siemens, Schneider Electric, and Hitachi Energy have decades of engineering heritage and their type-test documentation is flawless \u2014 this is why they are priced high. The difference in price is really there, but it is not only a matter of quality; the price includes overheads, brand profit, and local content requirements. Buyers in need of IEC 60076 compliance, complete routine test report, and dependable delivery at 30\u201350% lower cost will find their supplier among certified Chinese manufacturers. Jiangsu Subian Electric Power manufactures oil-filled transformers of various capacities from 10 kV to 110 kV with CRGO or amorphous core and provides routine test report with each shipment.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-312\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/The-Quotation-Checklist.webp\" alt=\"The Quotation Checklist\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"quote\">The Quotation Checklist<\/h2>\n<ul>\n<li>Complete model number and IEC 60076 standard reference.<\/li>\n<li>Detailed losses: no-load losses (W), load losses (W) at 75 \u00b0C, and impedance (%).<\/li>\n<li>Cooling classification (ONAN\/ONAF) and raise in temperature limitations.<\/li>\n<li>Nature and type of core material (CRGO or amorphous) used.<\/li>\n<li>Range of taps and type of tap changer.<\/li>\n<li>Accessories that already come with it or those that need to be purchased.<\/li>\n<li>Availability of routine test report. Availability of type test certificate for similar model.<\/li>\n<li>Warranty (generally 18-24 months) and place where after-sales service will be provided.<\/li>\n<li>Payment terms (FOB\/CFR\/CIF).<\/li>\n<\/ul>\n<h2 id=\"logistics\">Logistics, Customs, and Delivery<\/h2>\n<p>A transformer that is water resistant is a bulky item and needs to be treated as a liquid. Find out whether the country of delivery prohibits the entry of oil as there are such countries that do oppose oil deliveries. Hence, your manufacturing plant may either send the transformer without the oil or with an oil made from ester. You need to budget for the delivery of around 1500-6000 USD depending on the selected route. Plan for the estimated delivery times of about thirty to sixty days and longer timeframes in case of performance tests or customized voltage ratings. Indeed, ask the service provider whether the equipment can be shipped without oil or using nitrogen.<\/p>\n<h2 id=\"faq\">\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0645\u062a\u0643\u0631\u0631\u0629<\/h2>\n<h3>How much does a 1,000 kVA oil-filled transformer cost?<\/h3>\n<p>Approximately $18,000 to $38,000 FOB price for a standard ONAN, CRGO transformer of 10 to 35 kV rating with a test certificate. Use of amorphous core, on-load tap changer, or 35 kV insulation raises the cost by 20 to 40%. European brands are at the top of the scale while Chinese brands focusing on cost are at the lower end. The cost of transformers varies by level of specification, brands, and locations.<\/p>\n<h3>How long does an oil-filled transformer last?<\/h3>\n<p>Properly loading a transformer and performing oil testing once per year makes a life span of 25\u201340 years feasible. Aging of the insulation is driven by temperature and moisture therefore the insulation would be protected as long as the transformer oil remains dry and moisture content is kept below 30 ppm, and it is not overloaded for prolonged time over the IEC temperature rise limits.<\/p>\n<h3>What does &#8220;no-load loss&#8221; mean and why does it matter?<\/h3>\n<p>The no-load loss refers to the power consumed by a transformer\u2019s core when it is energized. For example, a 400-kVA CRGO transformer has a no-load loss of about 600 to 700 watts whereas an amorphous transformer has a no-load loss of about 250 to 320 W. At a rate of $0.12 per kWh, every 100 W of no-load loss translates into approximately $105 consumed in one year which means that the 350 W energy requirement of an amorphous core transformer makes it pay for itself within a matter of 3 to 6 years depending on how lightly loaded the transformers are.<\/p>\n<h3>Can I buy a used oil-filled transformer to save money?<\/h3>\n<p>You absolutely can buy a used transformer but still consider it a risk in technical terms: before making the purchase and powering it up, the relevant testing (i.e. ratio testing, insulation resistance testing, oil breakdown voltage results, and DGA analysis) is best to be carried out. Plan to allocate about 10-20% of a new transformer price for laboratory tests, transformer oil analysis and treatment, gasket replacement, and possibly bushings change.<\/p>\n<h3>What documents should I request from the supplier?<\/h3>\n<p>As much as possible, make sure that you acquire the following: an itemized quote and IEC 60076 routine testing report, an oil test certificate, a design-type test certificate, an arrangement-and-installation drawing, and a quality certificate. For exports, the documents you will need to obtain are the commercial invoice, packing list, bill of lading, and original certificate. When you negotiate, make sure to have all of these documents in writing before you start paying.<\/p>\n<h2 id=\"references\">\u0627\u0644\u0645\u0631\u0627\u062c\u0639<\/h2>\n<ul>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/63633\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60076-1: \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u2014 \u0639\u0627\u0645<\/a> \u2014 The international standard covering ratings, losses, and routine tests referenced throughout this guide.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/60156\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60156: Insulating Liquids \u2014 Breakdown Voltage Test<\/a> \u2014 The test method behind the 40 kV oil acceptance threshold.<\/li>\n<li><a href=\"https:\/\/www.ieee.org\/\" rel=\"nofollow noopener\" target=\"_blank\">IEEE<\/a> \u2014 IEEE C57 standards complement IEC 60076 for transformer design, testing, and maintenance practice.<\/li>\n<li><a href=\"https:\/\/www.nema.org\/\" rel=\"nofollow noopener\" target=\"_blank\">NEMA<\/a> \u2014 North American efficiency and enclosure standards for distribution transformers.<\/li>\n<li><a href=\"https:\/\/www.energy.gov\/eere\/femp\/energy-conservation-program-standards-distribution-transformers\" rel=\"nofollow noopener\" target=\"_blank\">US DOE Distribution Transformer Efficiency Standards<\/a> \u2014 Official efficiency regulations that explain how loss values drive transformer economics.<\/li>\n<li><a href=\"https:\/\/www.ul.com\/\" rel=\"nofollow noopener\" target=\"_blank\">UL Solutions<\/a> \u2014 Safety certification body; relevant when transformers must also meet UL or CSA listings for North American projects.<\/li>\n<li><a href=\"https:\/\/subian-electric.com\/ar\/\">Jiangsu Subian Electric Power Co., Ltd.<\/a> \u2014 Manufacturer of IEC 60076-compliant oil-filled transformers, 10 kV\u2013110 kV, with routine test reports.<\/li>\n<\/ul>\n<h2 id=\"conclusion\">\u0627\u0644\u062e\u0627\u062a\u0645\u0629<\/h2>\n<p>Purchasing an oil-filled transformer depends on five numbers; namely, the rating, the no-load loss, the load loss, the impedance, and the total cost per kVA. Choose the size of the transformer according to the peak demand at 70\u201385% of the maximum load and use economically valuable core materials depending on the load factor and the energy cost. Request routine test reports and check quotes on the part-by-part basis rather than the final price as FOB prices vary from $2,000 for 100 kVA to $80.000 for 2,500 kVA with a huge gap existing between well-known international manufacturing companies and other producers. Start by requesting an itemized quotation from a certified supplier such as <a href=\"https:\/\/subian-electric.com\/ar\/\">\u0634\u0631\u0643\u0629 \u062c\u064a\u0627\u0646\u063a\u0633\u0648 \u0633\u0648\u0628\u064a\u0646 \u0644\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629<\/a>, use this guide&#8217;s checklist to verify every line, and you will buy a transformer that pays for itself in reliable service for decades.<\/p>","protected":false},"excerpt":{"rendered":"<p>Three months prior to a factory expansion, a procurement manager from Nigeria received a quotation sheet inboxed to her, stating, &#8220;1000 kVA oil-filled transformer &#8211; 11,400 USD FOB,&#8221; along with zero standard numbers, no loss numbers, or accessories information. She found a lower rate online for 9,200 USD and a higher European branded quote at [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":310,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[77],"tags":[],"class_list":["post-309","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/posts\/309","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=309"}],"version-history":[{"count":2,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/posts\/309\/revisions"}],"predecessor-version":[{"id":11050,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/posts\/309\/revisions\/11050"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/media\/310"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/media?parent=309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/categories?post=309"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/subian-electric.com\/ar\/wp-json\/wp\/v2\/tags?post=309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}