{"id":2054,"date":"2026-07-29T06:15:34","date_gmt":"2026-07-29T06:15:34","guid":{"rendered":"https:\/\/zeeyielec.com\/?p=2054"},"modified":"2026-07-29T06:17:41","modified_gmt":"2026-07-29T06:17:41","slug":"mv-bushings-for-coastal-environments","status":"publish","type":"post","link":"https:\/\/zeeyielec.com\/ar\/mv-bushings-for-coastal-environments\/","title":{"rendered":"\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0628\u0637\u0627\u0646\u0627\u062a \u0645\u0646 \u0646\u0648\u0639 MV \u0644\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629 \u0648\u0627\u0644\u0645\u0644\u0648\u062b\u0629"},"content":{"rendered":"<p>\u064a\u0628\u062f\u0623 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0628\u0637\u0627\u0646\u0627\u062a \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629 \u0644\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u062a\u0648\u0633\u0637 (MV) \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629 \u0628\u0641\u0647\u0645 \u0627\u0644\u0633\u0628\u0628 \u0627\u0644\u0630\u064a \u064a\u062c\u0639\u0644 \u0627\u0644\u062a\u0644\u0648\u062b \u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u0641\u0634\u0644 \u0627\u0644\u0639\u0648\u0627\u0632\u0644 \u0628\u0634\u0643\u0644 \u062a\u062f\u0631\u064a\u062c\u064a \u0641\u064a \u0627\u0644\u0645\u0642\u0627\u0645 \u0627\u0644\u0623\u0648\u0644.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0644\u0645\u0627\u0630\u0627 \u064a\u062a\u0633\u0628\u0628 \u0627\u0644\u062a\u0644\u0648\u062b \u0641\u064a \u062a\u0639\u0637\u0644 \u062c\u0644\u0628\u0629 \u0627\u0644\u0639\u0627\u0632\u0644 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0644\u0644\u0633\u064a\u0627\u0631\u0627\u062a \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0630\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0648\u0633\u0637<\/h2>\n\n\n\n<p>\u0646\u0627\u062f\u0631\u064b\u0627 \u0645\u0627 \u062a\u062a\u0639\u0637\u0644 \u0645\u0645\u0631\u0651\u0629 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0648\u0633\u0637 \u0646\u062a\u064a\u062c\u0629 \u0644\u062d\u0627\u062f\u062b\u0629 \u0648\u0627\u062d\u062f\u0629 \u0645\u0646 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0632\u0627\u0626\u062f. \u0648\u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u064a\u0643\u0648\u0646 \u0627\u0644\u062a\u0639\u0637\u0644 \u062a\u062f\u0631\u064a\u062c\u064a\u064b\u0651\u0627: \u062d\u064a\u062b \u064a\u062a\u0641\u0627\u0639\u0644 \u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u0633\u0637\u062d\u064a \u0627\u0644\u0645\u062a\u0631\u0627\u0643\u0645 \u0645\u0639 \u0627\u0644\u0631\u0637\u0648\u0628\u0629 \u0644\u062a\u0643\u0648\u064a\u0646 \u0645\u0633\u0627\u0631 \u0645\u0648\u0635\u0651\u0644 \u0639\u0628\u0631 \u0639\u0627\u0632\u0644 \u0635\u064f\u0645\u0645 \u0644\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u0639\u062f\u0645 \u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u0633\u0637\u062d \u0644\u0644\u0643\u0647\u0631\u0628\u0627\u0621. \u0648\u064a\u064f\u0639\u062f \u0641\u0647\u0645 \u0647\u0630\u0647 \u0627\u0644\u0622\u0644\u064a\u0629 \u0646\u0642\u0637\u0629 \u0627\u0644\u0627\u0646\u0637\u0644\u0627\u0642 \u0644\u0623\u064a \u0642\u0631\u0627\u0631 \u064a\u062a\u0639\u0644\u0642 \u0628\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0639\u0648\u0627\u0645\u0644 \u0627\u0644\u0628\u064a\u0626\u064a\u0629\u060c \u062d\u064a\u062b \u0625\u0646 \u0627\u062e\u062a\u064a\u0627\u0631\u0627\u062a \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u0645\u0633\u0627\u0641\u0627\u062a \u0627\u0644\u062a\u0633\u0631\u0628 \u0627\u0644\u062a\u064a \u0633\u064a\u062a\u0645 \u062a\u0646\u0627\u0648\u0644\u0647\u0627 \u0644\u0627\u062d\u0642\u064b\u0627 \u0641\u064a \u0647\u0630\u0627 \u0627\u0644\u062f\u0644\u064a\u0644 \u0647\u064a \u0627\u0633\u062a\u062c\u0627\u0628\u0627\u062a \u0645\u0628\u0627\u0634\u0631\u0629 \u0644\u0644\u0638\u0648\u0627\u0647\u0631 \u0627\u0644\u0641\u064a\u0632\u064a\u0627\u0626\u064a\u0629 \u0627\u0644\u0645\u0648\u0636\u062d\u0629 \u0647\u0646\u0627.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0643\u064a\u0641 \u064a\u0624\u062f\u064a \u062a\u0644\u0648\u062b \u0627\u0644\u0623\u0633\u0637\u062d \u0625\u0644\u0649 \u062d\u062f\u0648\u062b \u00ab\u0627\u0644\u0627\u0646\u062a\u0634\u0627\u0631 \u0627\u0644\u0633\u0631\u064a\u0639 \u0644\u0644\u0647\u0628\u00bb<\/h3>\n\n\n\n<p>\u0641\u064a \u0627\u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u062c\u0627\u0641\u0629\u060c \u062a\u0633\u062a\u0642\u0631 \u0645\u0639\u0638\u0645 \u0627\u0644\u0645\u0644\u0648\u062b\u0627\u062a \u0627\u0644\u0645\u062d\u0645\u0648\u0644\u0629 \u062c\u0648\u0627\u064b \u2014 \u0645\u062b\u0644 \u0631\u0648\u0627\u0633\u0628 \u0627\u0644\u0645\u0644\u062d \u0648\u063a\u0628\u0627\u0631 \u0627\u0644\u0623\u0633\u0645\u0646\u062a \u0648\u0627\u0644\u062c\u0633\u064a\u0645\u0627\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u2014 \u0639\u0644\u0649 \u0633\u0637\u062d \u0627\u0644\u062c\u0644\u0628\u0629 \u062f\u0648\u0646 \u0623\u0646 \u062a\u0648\u0635\u0644 \u062a\u064a\u0627\u0631\u0627\u064b \u0630\u064a \u0623\u0647\u0645\u064a\u0629\u060c \u0646\u0638\u0631\u0627\u064b \u0644\u0623\u0646 \u0627\u0644\u0645\u0644\u062d \u0627\u0644\u062c\u0627\u0641 \u0648\u0627\u0644\u063a\u0628\u0627\u0631 \u064a\u062a\u0645\u062a\u0639\u0627\u0646 \u0628\u0645\u0642\u0627\u0648\u0645\u0629 \u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0639\u0627\u0644\u064a\u0629 \u0646\u0633\u0628\u064a\u0627\u064b. \u0648\u064a\u0628\u062f\u0623 \u062a\u0633\u0644\u0633\u0644 \u0627\u0644\u0641\u0634\u0644 \u0639\u0646\u062f\u0645\u0627 \u064a\u0624\u062f\u064a \u0627\u0644\u0636\u0628\u0627\u0628 \u0623\u0648 \u0627\u0644\u0646\u062f\u0649 \u0623\u0648 \u0627\u0644\u0645\u0637\u0631 \u0627\u0644\u062e\u0641\u064a\u0641 \u0625\u0644\u0649 \u062a\u0631\u0637\u064a\u0628 \u062a\u0644\u0643 \u0627\u0644\u0637\u0628\u0642\u0629 \u062f\u0648\u0646 \u0623\u0646 \u064a\u063a\u0633\u0644\u0647\u0627. \u062a\u0635\u0628\u062d \u0637\u0628\u0642\u0629 \u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u0645\u0628\u0644\u0644\u0629 \u0645\u0648\u0635\u0644\u0629\u060c \u0648\u064a\u0628\u062f\u0623 \u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0633\u0631\u0628 \u0641\u064a \u0627\u0644\u062a\u062f\u0641\u0642 \u0639\u0644\u0649 \u0637\u0648\u0644 \u0627\u0644\u0633\u0637\u062d \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0627\u0644\u0645\u0631\u0648\u0631 \u0639\u0628\u0631 \u0627\u0644\u0647\u0648\u0627\u0621 \u0627\u0644\u0645\u062d\u064a\u0637.<\/p>\n\n\n\n<p>\u0648\u0646\u0638\u0631\u064b\u0627 \u0644\u062a\u0631\u0643\u064a\u0632 \u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0633\u0631\u0628 \u0641\u064a \u0627\u0644\u0623\u062c\u0632\u0627\u0621 \u0627\u0644\u0623\u0636\u064a\u0642 \u0645\u0646 \u0627\u0644\u0637\u0628\u0642\u0629 \u0627\u0644\u0645\u0628\u0644\u0644\u0629\u060c \u0641\u0625\u0646 \u0627\u0644\u062a\u0633\u062e\u064a\u0646 \u0627\u0644\u0645\u0648\u0636\u0639\u064a \u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u062a\u062c\u0641\u064a\u0641 \u062a\u0644\u0643 \u0627\u0644\u0623\u062c\u0632\u0627\u0621 \u0623\u0648\u0644\u0627\u064b\u060c \u0645\u0645\u0627 \u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u062a\u0643\u0648\u064a\u0646 \u0623\u0634\u0631\u0637\u0629 \u062c\u0627\u0641\u0629. \u062b\u0645 \u064a\u064f\u0639\u0627\u062f \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0628\u0642\u064a \u0639\u0628\u0631 \u0627\u0644\u0639\u0627\u0632\u0644 \u0628\u0634\u0643\u0644 \u0634\u0628\u0647 \u0643\u0627\u0645\u0644 \u0639\u0628\u0631 \u0647\u0630\u0647 \u0627\u0644\u0623\u0634\u0631\u0637\u0629 \u0627\u0644\u062c\u0627\u0641\u0629\u060c \u0645\u0645\u0627 \u064a\u0646\u062a\u062c \u0639\u0646\u0647 \u0625\u062c\u0647\u0627\u062f \u0645\u064a\u062f\u0627\u0646\u064a \u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0645\u0648\u0636\u0639\u064a \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u062a\u062c\u0627\u0648\u0632 3 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a\/\u0633\u0645 \u2013 5 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a\/\u0633\u0645 \u0639\u0646\u062f \u062d\u0627\u0641\u0629 \u0627\u0644\u0634\u0631\u064a\u0637\u060c \u0648\u0647\u0648 \u0645\u0627 \u064a\u0632\u064a\u062f \u0628\u0643\u062b\u064a\u0631 \u0639\u0646 \u0627\u0644\u0639\u062a\u0628\u0629 \u0627\u0644\u0644\u0627\u0632\u0645\u0629 \u0644\u0627\u0633\u062a\u0645\u0631\u0627\u0631 \u0627\u0644\u062a\u0641\u0631\u064a\u063a\u0627\u062a \u0627\u0644\u0633\u0637\u062d\u064a\u0629 \u0627\u0644\u0635\u063a\u064a\u0631\u0629.<\/p>\n\n\n\n<p>\u064a\u0624\u062f\u064a \u062a\u0643\u0631\u0627\u0631 \u062d\u062f\u0648\u062b \u0627\u0644\u0642\u0648\u0633 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0641\u064a \u0627\u0644\u0634\u0631\u064a\u0637 \u0627\u0644\u062c\u0627\u0641 \u0625\u0644\u0649 \u062a\u0641\u062d\u064a\u0645 \u0633\u0637\u062d \u0627\u0644\u0639\u0627\u0632\u0644 \u062a\u062f\u0631\u064a\u062c\u064a\u064b\u0627 (\u0641\u064a \u062d\u0627\u0644\u0629 \u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0639\u0636\u0648\u064a\u0629 \u0645\u062b\u0644 \u0627\u0644\u0633\u064a\u0644\u064a\u0643\u0648\u0646 \u0623\u0648 \u0627\u0644\u0625\u064a\u0628\u0648\u0643\u0633\u064a) \u0623\u0648 \u062a\u0622\u0643\u0644 \u0627\u0644\u0637\u0628\u0642\u0629 \u0627\u0644\u0632\u062c\u0627\u062c\u064a\u0629 (\u0641\u064a \u062d\u0627\u0644\u0629 \u0627\u0644\u0628\u0648\u0631\u0633\u0644\u064a\u0646)\u060c \u0645\u0645\u0627 \u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u0627\u0645\u062a\u062f\u0627\u062f \u0645\u0633\u0627\u0631 \u0645\u0648\u0635\u0644 \u062d\u062a\u0649 \u064a\u0631\u0628\u0637 \u062c\u0632\u0621\u064b\u0627 \u0643\u0627\u0641\u064a\u064b\u0627 \u0645\u0646 \u0645\u0633\u0627\u0631 \u0627\u0644\u0632\u062d\u0641 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u060c \u0645\u0645\u0627 \u064a\u062a\u0633\u0628\u0628 \u0641\u064a \u062d\u062f\u0648\u062b \u0642\u0641\u0632\u0629 \u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u062f\u0648\u0631 \u0627\u0644\u0631\u0637\u0648\u0628\u0629 \u0641\u064a \u062a\u0646\u0634\u064a\u0637 \u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0633\u0631\u0628<\/h3>\n\n\n\n<p>This distinction matters because the two mechanisms address different physical failure modes, and it&#8217;s the basis for the site pollution severity (SPS) evaluation methodology set out in IEC TS 60815-1, which governs ESDD\/NSDD-based site classification; the resulting SPS class then feeds into the creepage-distance dimensioning tables in IEC TS 60815-2 (ceramic\/glass) and IEC TS 60815-3 (polymer insulators).<\/p>\n\n\n\n<p>For more on how this distinction shapes bushing design, see ZeeyiElec&#8217;s guide on <a href=\"https:\/\/zeeyielec.com\/ar\/mv-bushing-creepage-clearance-basics\/\">\u0623\u0633\u0627\u0633\u064a\u0627\u062a \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u062a\u0633\u0631\u0628 \u0648\u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0639\u0632\u0644 \u0644\u0644\u0628\u0637\u0627\u0646\u0627\u062a \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062c\u0647\u062f<\/a>.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">\u0631\u0624\u0649 \u0627\u0644\u062e\u0628\u0631\u0627\u0621<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0646\u0627\u062f\u0631\u064b\u0627 \u0645\u0627 \u064a\u0635\u0627\u062d\u0628 \u0627\u0644\u0642\u0648\u0633 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0627\u0644\u0646\u0627\u062a\u062c \u0639\u0646 \u0627\u0644\u0634\u0631\u064a\u0637 \u0627\u0644\u062c\u0627\u0641 \u0635\u0648\u062a \u0645\u0633\u0645\u0648\u0639 \u0639\u0646\u062f \u0645\u0633\u062a\u0648\u064a\u0627\u062a \u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629 \u2014 \u0641\u0627\u0644\u0639\u0644\u0627\u0645\u0627\u062a \u0627\u0644\u0645\u0628\u0643\u0631\u0629 \u062a\u0643\u0648\u0646 \u0645\u0631\u0626\u064a\u0629 (\u062e\u0637\u0648\u0637 \u062a\u062a\u0628\u0639 \u062e\u0627\u0641\u062a\u0629)\u060c \u0648\u0644\u064a\u0633\u062a \u0625\u0646\u0630\u0627\u0631\u0627\u062a \u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629.<\/li>\n\n\n\n<li>A bushing that &#8220;looks fine&#8221; after a dry season can already carry partial tracking damage invisible until the next wet cycle.<\/li>\n\n\n\n<li>Clearance failures and creepage failures look similar from a distance but call for entirely different fixes \u2014 don&#8217;t diagnose one as the other from a photo alone.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u0641\u0626\u0627\u062a \u0627\u0644\u062a\u0644\u0648\u062b \u0648\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u062a\u0633\u0631\u0628 \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0645\u0639\u064a\u0627\u0631 IEC 60815<\/h2>\n\n\n\n<p>Once contamination is understood as a surface-conduction problem, selection becomes a matter of sizing the insulator&#8217;s creepage path against the expected pollution severity of the installation site. IEC 60815 organizes this into pollution severity classes, which map site conditions to a minimum specific creepage distance, expressed in mm\/kV of highest system voltage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0641\u0626\u0627\u062a \u0634\u062f\u0629 \u0627\u0644\u062a\u0644\u0648\u062b (\u0645\u0646 \u062e\u0641\u064a\u0641 \u0625\u0644\u0649 \u0634\u062f\u064a\u062f \u062c\u062f\u064b\u0651\u0627)<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-01.webp-1024x559.webp\" alt=\"\u062c\u062f\u0648\u0644 \u0641\u0626\u0627\u062a \u0627\u0644\u062a\u0644\u0648\u062b \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0645\u0639\u064a\u0627\u0631 IEC 60815 \u0627\u0644\u0630\u064a \u064a\u0648\u0636\u062d \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u062a\u0633\u0631\u0628 \u0628\u0627\u0644\u0645\u0644\u0644\u064a\u0645\u062a\u0631 \u0644\u0643\u0644 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a\" class=\"wp-image-2056\" srcset=\"https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-01.webp-1024x559.webp 1024w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-01.webp-300x164.webp 300w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-01.webp-768x419.webp 768w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-01.webp-18x10.webp 18w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-01.webp.webp 1408w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">\u062a\u062a\u0648\u0627\u0641\u0642 \u0641\u0626\u0627\u062a \u0634\u062f\u0629 \u0627\u0644\u062a\u0644\u0648\u062b \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0645\u0639\u064a\u0627\u0631 IEC 60815 \u2014 \u0627\u0644\u062e\u0641\u064a\u0641\u0629\u060c \u0648\u0627\u0644\u0645\u062a\u0648\u0633\u0637\u0629\u060c \u0648\u0627\u0644\u0634\u062f\u064a\u062f\u0629\u060c \u0648\u0627\u0644\u0634\u062f\u064a\u062f\u0629 \u062c\u062f\u064b\u0651\u0627 \u2014 \u0628\u0634\u0643\u0644 \u0645\u0628\u0627\u0634\u0631 \u0645\u0639 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 \u0644\u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0632\u062d\u0641 \u0627\u0644\u0646\u0648\u0639\u064a\u0629 \u0628\u0627\u0644\u0645\u0644\u0644\u064a\u0645\u062a\u0631 \u0644\u0643\u0644 \u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a.<\/figcaption><\/figure>\n\n\n\n<p>\u064a\u062a\u0645 \u062a\u0635\u0646\u064a\u0641 \u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0639\u0645\u0648\u0645\u064b\u0627 \u0639\u0644\u0649 \u0627\u0644\u0646\u062d\u0648 \u0627\u0644\u062a\u0627\u0644\u064a\u060c \u0645\u0639 \u0632\u064a\u0627\u062f\u0629 \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0632\u062d\u0641 \u0627\u0644\u0645\u062d\u062f\u062f\u0629 \u0641\u064a \u0643\u0644 \u0641\u0626\u0629:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u0636\u0648\u0626\u064a<\/h4>\n\n\n\n<p>\u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0631\u064a\u0641\u064a\u0629 \u0623\u0648 \u0630\u0627\u062a \u0627\u0644\u0643\u062b\u0627\u0641\u0629 \u0627\u0644\u0633\u0643\u0627\u0646\u064a\u0629 \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629 \u0627\u0644\u0628\u0639\u064a\u062f\u0629 \u0639\u0646 \u0627\u0644\u0633\u0648\u0627\u062d\u0644 \u0648\u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629\u060c \u0648\u0627\u0644\u062a\u064a \u062a\u062a\u0637\u0644\u0628 \u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u0628\u064a\u0646 16 \u0645\u0645\/\u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a \u064819 \u0645\u0645\/\u0643\u064a\u0644\u0648\u0641\u0648\u0644\u062a.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u062a\u0644\u0648\u062b \u0645\u062a\u0648\u0633\u0637<\/h4>\n\n\n\n<p>\u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u062a\u064a \u062a\u0634\u0647\u062f \u0646\u0634\u0627\u0637\u064b\u0627 \u0635\u0646\u0627\u0639\u064a\u064b\u0627 \u0645\u0639\u062a\u062f\u0644\u064b\u0627 \u0623\u0648 \u062d\u0631\u0642\u064b\u0627 \u0632\u0631\u0627\u0639\u064a\u064b\u0651\u0627\u060c \u0648\u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629 \u0627\u0644\u0645\u0645\u062a\u062f\u0629 \u0644\u0639\u062f\u0629 \u0643\u064a\u0644\u0648\u0645\u062a\u0631\u0627\u062a \u0625\u0644\u0649 \u0627\u0644\u062f\u0627\u062e\u0644.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u0634\u062f\u064a\u062f<\/h4>\n\n\n\n<p>\u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0627\u0644\u062a\u064a \u062a\u0634\u0647\u062f \u0627\u0646\u0628\u0639\u0627\u062b\u0627\u062a \u0643\u0628\u064a\u0631\u0629 \u0645\u0646 \u0627\u0644\u062c\u0633\u064a\u0645\u0627\u062a\u060c \u0623\u0648 \u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629 \u0627\u0644\u0648\u0627\u0642\u0639\u0629 \u0639\u0644\u0649 \u0645\u0633\u0627\u0641\u0629 \u062a\u062a\u0631\u0627\u0648\u062d \u0628\u064a\u0646 1 \u06483 \u0643\u064a\u0644\u0648\u0645\u062a\u0631\u0627\u062a \u062a\u0642\u0631\u064a\u0628\u064b\u0627 \u0645\u0646 \u0627\u0644\u062e\u0637 \u0627\u0644\u0633\u0627\u062d\u0644\u064a \u0648\u0627\u0644\u0645\u0639\u0631\u0636\u0629 \u0644\u0631\u064a\u0627\u062d \u0642\u0648\u064a\u0629.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u062a\u0644\u0648\u062b \u0634\u062f\u064a\u062f \u062c\u062f\u064b\u0627<\/h4>\n\n\n\n<p>\u0627\u0644\u062a\u0639\u0631\u0636 \u0627\u0644\u0645\u0628\u0627\u0634\u0631 \u0644\u0644\u0628\u064a\u0626\u0629 \u0627\u0644\u0628\u062d\u0631\u064a\u0629\u060c \u0623\u0648 \u0645\u0646\u0627\u0637\u0642 \u0631\u0634 \u0627\u0644\u0645\u0644\u062d\u060c \u0623\u0648 \u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0627\u0644\u062b\u0642\u064a\u0644\u0629 \u0627\u0644\u062a\u064a \u062a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u063a\u0628\u0627\u0631 \u0645\u0648\u0635\u0644\u060c \u0645\u0645\u0627 \u064a\u062a\u0637\u0644\u0628 \u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0633\u0627\u0641\u0629 \u0632\u062d\u0641 \u0645\u062d\u062f\u062f\u0629 \u062a\u0628\u0644\u063a 31 \u0645\u0644\u0645\/\u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u0623\u0648 \u0623\u0643\u062b\u0631.<\/p>\n\n\n\n<p>\u0647\u0630\u0647 \u0627\u0644\u0646\u0637\u0627\u0642\u0627\u062a \u0647\u064a \u0646\u0637\u0627\u0642\u0627\u062a \u0625\u0631\u0634\u0627\u062f\u064a\u0629 \u0648\u0644\u064a\u0633\u062a \u0642\u064a\u0645\u064b\u0627 \u0639\u0627\u0644\u0645\u064a\u0629 \u062b\u0627\u0628\u062a\u0629 \u2014 \u0648\u064a\u0646\u0628\u063a\u064a \u062a\u0623\u0643\u064a\u062f \u0627\u0644\u062a\u0635\u0646\u064a\u0641 \u0627\u0644\u0641\u0639\u0644\u064a \u0644\u0644\u0645\u0648\u0642\u0639 \u0627\u0633\u062a\u0646\u0627\u062f\u064b\u0627 \u0625\u0644\u0649 \u0645\u0633\u062d \u0644\u062f\u0631\u062c\u0629 \u062e\u0637\u0648\u0631\u0629 \u0627\u0644\u062a\u0644\u0648\u062b\u060c \u0648\u0644\u064a\u0633 \u062a\u062d\u062f\u064a\u062f\u0647\u0627 \u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u062a\u0635\u0646\u064a\u0641 \u0627\u0644\u0641\u0626\u0629 \u0648\u062d\u062f\u0647.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u062a\u062d\u0648\u064a\u0644 \u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0645\u0648\u0642\u0639 \u0625\u0644\u0649 \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0632\u062d\u0641 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629<\/h3>\n\n\n\n<p>To size a bushing&#8217;s total creepage distance, the specific creepage figure (mm\/kV) is multiplied by the system&#8217;s highest voltage, Um, in kV. For a 24 kV-class MV bushing installed in a heavy pollution zone with a specific creepage requirement of around 25 mm\/kV, the resulting minimum total creepage distance works out to roughly 600 mm \u2014 a figure that directly shapes shed profile and insulator length in the product datasheet.<\/p>\n\n\n\n<p>\u0644\u0627 \u062a\u0632\u0627\u0644 \u0627\u0644\u0645\u0633\u0648\u062d\u0627\u062a \u0627\u0644\u0645\u064a\u062f\u0627\u0646\u064a\u0629 \u0644\u0644\u062a\u0644\u0648\u062b \u2014 \u0633\u0648\u0627\u0621 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0642\u064a\u0627\u0633 \u0645\u0624\u0634\u0631 ESDD \u0623\u0648 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0623\u062c\u0647\u0632\u0629 \u0642\u064a\u0627\u0633 \u062a\u0631\u0633\u0628 \u0627\u0644\u063a\u0628\u0627\u0631 \u0627\u0644\u0627\u062a\u062c\u0627\u0647\u064a\u0629 \u0639\u0644\u0649 \u0645\u062f\u0649 \u0639\u062f\u0629 \u0623\u0634\u0647\u0631 \u2014 \u0647\u064a \u0627\u0644\u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u0623\u0643\u062b\u0631 \u0645\u0648\u062b\u0648\u0642\u064a\u0629 \u0644\u0644\u062a\u0623\u0643\u062f \u0645\u0646 \u0627\u0644\u0641\u0626\u0629 \u0627\u0644\u062a\u064a \u062a\u0646\u0637\u0628\u0642 \u0641\u0639\u0644\u064a\u064b\u0651\u0627\u060c \u062d\u064a\u062b \u0625\u0646 \u062a\u0642\u062f\u064a\u0631\u0627\u062a \u0627\u0644\u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629 \u0627\u0644\u0645\u0633\u062a\u0646\u062f\u0629 \u0625\u0644\u0649 \u0627\u0644\u0623\u0642\u0645\u0627\u0631 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0642\u062f \u062a\u0642\u0644\u0644 \u0645\u0646 \u0634\u062f\u0629 \u0627\u0644\u062a\u0644\u0648\u062b \u0641\u064a \u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u062a\u064a \u062a\u0647\u0628 \u0641\u064a\u0647\u0627 \u0631\u064a\u0627\u062d \u0634\u0627\u0637\u0626\u064a\u0629 \u0633\u0627\u0626\u062f\u0629 \u0623\u0648 \u0627\u0644\u062a\u064a \u062a\u0648\u062c\u062f \u0641\u064a\u0647\u0627 \u0645\u0635\u0627\u062f\u0631 \u062a\u0635\u0631\u064a\u0641 \u0635\u0646\u0627\u0639\u064a\u0629 \u0642\u0631\u064a\u0628\u0629 \u062a\u0639\u0645\u0644 \u0628\u0627\u0644\u062a\u0648\u0627\u0632\u064a \u0645\u0639 \u0627\u0644\u062a\u0639\u0631\u0636 \u0644\u0644\u0645\u0644\u062d (<a href=\"https:\/\/webstore.iec.ch\/en\/publication\/61046\" target=\"_blank\" rel=\"noopener\">\u062a\u0635\u0646\u064a\u0641 \u0634\u062f\u0629 \u0627\u0644\u062a\u0644\u0648\u062b \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0645\u0639\u064a\u0627\u0631 IEC 60815<\/a>).<\/p>\n\n\n\n<p>\u064a\u0631\u062a\u0628\u0637 \u0645\u0646\u0637\u0642 \u062a\u062d\u062f\u064a\u062f \u0623\u0628\u0639\u0627\u062f \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0632\u062d\u0641 \u0627\u0631\u062a\u0628\u0627\u0637\u064b\u0627 \u0645\u0628\u0627\u0634\u0631\u064b\u0627 \u0628\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0648\u0627\u062f\u060c \u062d\u064a\u062b \u064a\u0645\u0643\u0646 \u062a\u062d\u0642\u064a\u0642 \u0646\u0641\u0633 \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0632\u062d\u0641 \u0627\u0644\u0645\u0633\u062a\u0647\u062f\u0641\u0629 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0623\u0634\u0643\u0627\u0644 \u0645\u062e\u062a\u0644\u0641\u0629 \u0644\u0644\u063a\u0637\u0627\u0621\u060c \u0627\u0639\u062a\u0645\u0627\u062f\u064b\u0627 \u0639\u0644\u0649 \u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0642\u062f \u062a\u0645 \u062a\u062d\u062f\u064a\u062f \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0628\u0648\u0631\u0633\u0644\u064a\u0646 \u0623\u0648 \u0627\u0644\u0633\u064a\u0644\u064a\u0643\u0648\u0646 \u0623\u0648 \u0627\u0644\u0625\u064a\u0628\u0648\u0643\u0633\u064a.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0648\u0627\u062f: \u0627\u0644\u0628\u0648\u0631\u0633\u0644\u064a\u0646 \u0645\u0642\u0627\u0628\u0644 \u0645\u0637\u0627\u0637 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\u0646\u0642\u0644 \u062e\u0627\u0635\u064a\u0629 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u0627\u0621 \u0648\u0627\u0633\u062a\u0639\u0627\u062f\u062a\u0647\u0627: \u062d\u064a\u062b \u062a\u0647\u0627\u062c\u0631 \u0628\u0648\u0644\u064a\u0645\u0631\u0627\u062a \u0627\u0644\u0633\u064a\u0644\u064a\u0643\u0648\u0646 \u0645\u0646\u062e\u0641\u0636\u0629 \u0627\u0644\u0648\u0632\u0646 \u0627\u0644\u062c\u0632\u064a\u0626\u064a \u0625\u0644\u0649 \u0627\u0644\u0633\u0637\u062d \u0648\u064a\u0645\u0643\u0646\u0647\u0627 \u062a\u063a\u0644\u064a\u0641 \u0627\u0644\u0645\u0644\u0648\u062b\u0627\u062a\u060c \u0645\u0645\u0627 \u064a\u0639\u064a\u062f \u0627\u0644\u0633\u0644\u0648\u0643 \u0627\u0644\u0645\u0642\u0627\u0648\u0645 \u0644\u0644\u0645\u0627\u0621 \u062d\u062a\u0649 \u0628\u0639\u062f \u0623\u0633\u0627\u0628\u064a\u0639 \u0645\u0646 \u0627\u0644\u062a\u0639\u0631\u0636 \u062f\u0648\u0646 \u062a\u0646\u0638\u064a\u0641. \u0648\u064a\u0624\u062f\u064a \u0630\u0644\u0643 \u0639\u0645\u0648\u0645\u064b\u0627 \u0625\u0644\u0649 \u062a\u0642\u0644\u064a\u0644 \u062a\u0643\u0631\u0627\u0631 \u0627\u0644\u063a\u0633\u0644 \u0645\u0642\u0627\u0631\u0646\u0629 \u0628\u0627\u0644\u0628\u0648\u0631\u0633\u0644\u064a\u0646 \u0641\u064a \u0646\u0641\u0633 \u0641\u0626\u0629 \u0627\u0644\u062a\u0644\u0648\u062b\u060c \u0639\u0644\u0649 \u0627\u0644\u0631\u063a\u0645 \u0645\u0646 \u0623\u0646 \u0645\u0639\u062f\u0644 \u0627\u0644\u0627\u0633\u062a\u0639\u0627\u062f\u0629 \u064a\u062a\u0628\u0627\u0637\u0623 \u0645\u0639 \u062a\u0642\u062f\u0645 \u0639\u0645\u0631 \u0627\u0644\u0645\u0627\u062f\u0629 \u0648\u0646\u0641\u0627\u062f \u0645\u062e\u0632\u0648\u0646 \u0627\u0644\u0628\u0648\u0644\u064a\u0645\u0631 \u0627\u0644\u0645\u0647\u0627\u062c\u0631 \u0639\u0644\u0649 \u0645\u062f\u0627\u0631 \u0639\u0645\u0631 \u0627\u0644\u062e\u062f\u0645\u0629 \u0627\u0644\u0630\u064a \u064a\u064f\u0642\u062f\u064e\u0651\u0631 \u0639\u0627\u062f\u0629\u064b \u0628\u0645\u0627 \u064a\u062a\u0631\u0627\u0648\u062d \u0628\u064a\u0646 20 \u064830 \u0639\u0627\u0645\u064b\u0627.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0627\u0644\u0625\u064a\u0628\u0648\u0643\u0633\u064a \u0627\u0644\u0645\u0635\u0628\u0648\u0628: \u0645\u0646\u0627\u0633\u0628 \u0644\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0648\u0644\u0644\u062a\u0639\u0631\u0636 \u0627\u0644\u0645\u0639\u062a\u062f\u0644<\/h3>\n\n\n\n<p>Outdoors, standard cast epoxy lacks the shed geometry and hydrophobic surface needed for heavy pollution service, so coastal or industrial outdoor use typically requires supplementary silicone coating or housing rather than bare epoxy \u2014 a distinction worth confirming at RFQ stage rather than assuming from a general &#8220;epoxy&#8221; spec label, since outdoor pollution performance for cast epoxy is not governed by a single unified IEC clause and varies by manufacturer formulation.<\/p>\n\n\n\n<p>Field replacements on retrofit projects often reveal that a bushing specified years earlier for &#8220;medium&#8221; pollution no longer matches site reality after nearby land-use changes.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u0631\u0624\u0649 \u0627\u0644\u062e\u0628\u0631\u0627\u0621<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Silicone&#8217;s hydrophobic recovery isn&#8217;t permanent \u2014 factor in polymer depletion when planning bushing replacement cycles near the end of rated life.<\/li>\n\n\n\n<li>\u064a\u064f\u0639\u062f \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0625\u064a\u0628\u0648\u0643\u0633\u064a \u0627\u0644\u0645\u0635\u0628\u0648\u0628 \u0627\u0644\u0645\u0643\u0634\u0648\u0641 \u0641\u064a \u0627\u0644\u0623\u0645\u0627\u0643\u0646 \u0627\u0644\u062e\u0627\u0631\u062c\u064a\u0629 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629 \u0623\u062d\u062f \u0623\u0643\u062b\u0631 \u0627\u0644\u0623\u062e\u0637\u0627\u0621 \u0634\u064a\u0648\u0639\u064b\u0627 \u0627\u0644\u0645\u062a\u0639\u0644\u0642\u0629 \u0628\u0639\u062f\u0645 \u0627\u0644\u0627\u0644\u062a\u0632\u0627\u0645 \u0628\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a\u060c \u0648\u0627\u0644\u062a\u064a \u062a\u064f\u0644\u0627\u062d\u0638 \u0641\u064a \u0645\u0631\u062d\u0644\u0629 \u0625\u0639\u0627\u062f\u0629 \u062a\u0642\u062f\u064a\u0645 \u0627\u0644\u0639\u0631\u0648\u0636.<\/li>\n\n\n\n<li>When comparing quotes, confirm whether &#8220;silicone&#8221; refers to a full silicone housing or a silicone coating over porcelain\/epoxy \u2014 performance and cost differ significantly.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0644\u0627\u0639\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u0645\u062a\u0639\u0644\u0642\u0629 \u0628\u0627\u0644\u0636\u0628\u0627\u0628 \u0627\u0644\u0645\u0644\u062d\u064a \u0627\u0644\u0633\u0627\u062d\u0644\u064a \u0648\u0627\u0644\u0628\u062d\u0631\u064a<\/h2>\n\n\n\n<p>Coastal exposure creates a distinct contamination pattern that differs from inland industrial pollution \u2014 salt-fog deposition is wind-driven, directional, and closely tied to distance from the shoreline, which makes generic &#8220;coastal&#8221; specification less reliable than a site-specific pollution survey.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0623\u0646\u0645\u0627\u0637 \u062a\u0631\u0633\u0628 \u0627\u0644\u0645\u0644\u062d \u0628\u0627\u0644\u0642\u0631\u0628 \u0645\u0646 \u0627\u0644\u0633\u0648\u0627\u062d\u0644<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-03.webp-1024x559.webp\" alt=\"\u0645\u062e\u0637\u0637 \u062a\u062f\u0631\u062c \u062a\u0631\u0633\u0628 \u0627\u0644\u0645\u0644\u062d \u064a\u0648\u0636\u062d \u0645\u0633\u062a\u0648\u064a\u0627\u062a ESDD \u062d\u0633\u0628 \u0627\u0644\u0645\u0633\u0627\u0641\u0629 \u0645\u0646 \u0627\u0644\u0633\u0627\u062d\u0644\" class=\"wp-image-2058\" srcset=\"https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-03.webp-1024x559.webp 1024w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-03.webp-300x164.webp 300w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-03.webp-768x419.webp 768w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-03.webp-18x10.webp 18w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-03.webp.webp 1408w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">\u062a\u062a\u0646\u0627\u0642\u0635 \u0634\u062f\u0629 \u062a\u0631\u0633\u0628 \u0627\u0644\u0636\u0628\u0627\u0628 \u0627\u0644\u0645\u0644\u062d\u064a \u0645\u0639 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u0645\u0633\u0627\u0641\u0629 \u0639\u0646 \u0627\u0644\u062e\u0637 \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u060c \u062d\u064a\u062b \u064a\u0624\u062f\u064a \u0627\u062a\u062c\u0627\u0647 \u0627\u0644\u0631\u064a\u0627\u062d \u0627\u0644\u0633\u0627\u0626\u062f\u0629 \u0625\u0644\u0649 \u062a\u0631\u0627\u0643\u0645 \u063a\u064a\u0631 \u0645\u062a\u0645\u0627\u062b\u0644 \u0644\u0644\u062a\u0631\u0633\u0628\u0627\u062a \u0627\u0644\u0645\u0644\u062d\u064a\u0629 (ESDD) \u0639\u0644\u0649 \u0627\u0644\u0623\u0633\u0637\u062d \u0627\u0644\u0645\u0639\u0631\u0636\u0629 \u0644\u0644\u0631\u064a\u062d.<\/figcaption><\/figure>\n\n\n\n<p>Salt-fog concentration typically falls off sharply with distance inland \u2014 installations within roughly 500 m of breaking surf often see markedly higher ESDD readings than sites just 2 km\u20133 km further inland, even along the same coastline. Prevailing wind direction matters as much as raw distance: a bushing mounted on the windward side of an enclosure or structure can accumulate visibly heavier salt deposits than an identical unit on the leeward side, because salt aerosol is carried and deposited directionally rather than settling uniformly. Elevation above sea level and exposure to direct surf spray versus filtered fog further separate &#8220;very heavy&#8221; from merely &#8220;heavy&#8221; pollution classification on paper.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0645\u0644\u0627\u062d\u0638\u0627\u062a \u0645\u064a\u062f\u0627\u0646\u064a\u0629 \u0645\u0646 \u0627\u0644\u0645\u0646\u0634\u0622\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629<\/h3>\n\n\n\n<p>In coastal substation retrofits, a recurring pattern is bushings specified to a generic &#8220;heavy pollution&#8221; datasheet class showing dry-band arcing marks within 12 months\u201318 months of energization, concentrated specifically on the windward shed faces rather than distributed evenly around the insulator \u2014 a sign that the original site survey underestimated directional salt loading rather than that the material itself was defective. This kind of asymmetric wear is difficult to predict from distance-to-shore alone and generally only shows up once the unit has been in service through at least one full wet-season cycle.<\/p>\n\n\n\n<p>\u0648\u0639\u0646\u062f\u0645\u0627 \u062a\u0624\u062f\u064a \u0627\u0644\u0631\u064a\u0627\u062d \u0627\u0644\u0633\u0627\u0626\u062f\u0629 \u0648\u0627\u0644\u062a\u0639\u0631\u0636 \u0644\u0644\u0623\u0645\u0648\u0627\u062c \u0625\u0644\u0649 \u062f\u0641\u0639 \u0627\u0644\u0645\u0648\u0642\u0639 \u0646\u062d\u0648 \u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0639\u0644\u0649 \u0645\u0646 \u062a\u0635\u0646\u064a\u0641 \u00ab\u0634\u062f\u064a\u062f \u0627\u0644\u062b\u0642\u0644\u00bb\u060c \u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u064a\u062c\u0645\u0639 \u0627\u0644\u0645\u0647\u0646\u062f\u0633\u0648\u0646 \u0628\u064a\u0646 \u0623\u063a\u0637\u064a\u0629 \u0645\u0646 \u0645\u0637\u0627\u0637 \u0627\u0644\u0633\u064a\u0644\u064a\u0643\u0648\u0646 \u0648\u0632\u064a\u0627\u062f\u0629 \u0625\u0636\u0627\u0641\u064a\u0629 \u0641\u064a \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0632\u062d\u0641 \u2014 \u0645\u0645\u0627 \u064a\u0631\u0641\u0639 \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0632\u062d\u0641 \u0627\u0644\u0645\u062d\u062f\u062f\u0629 \u0625\u0644\u0649 \u0645\u0627 \u0628\u064a\u0646 31 \u0645\u0645\/\u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u064835 \u0645\u0645\/\u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u2014 \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0627\u0644\u0627\u0639\u062a\u0645\u0627\u062f \u0639\u0644\u0649 \u062a\u063a\u064a\u064a\u0631 \u0627\u0644\u0645\u0627\u062f\u0629 \u0648\u062d\u062f\u0647\u0627. \u0648\u064a\u0638\u0644 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0627\u0644\u062a\u0631\u0633\u0628 \u0627\u0644\u0641\u0639\u0644\u064a \u0644\u0644\u0645\u0644\u062d \u0645\u0646 \u062e\u0644\u0627\u0644 \u0641\u062a\u0631\u0629 \u0645\u0631\u0627\u0642\u0628\u0629 \u0642\u0635\u064a\u0631\u0629 \u0627\u0644\u0623\u0645\u062f \u0644\u0640 ESDD \u0642\u0628\u0644 \u0625\u0635\u062f\u0627\u0631 \u0627\u0644\u0637\u0644\u0628 \u0627\u0644\u0646\u0647\u0627\u0626\u064a \u0639\u0644\u0649 \u0627\u0644\u0628\u0637\u0627\u0646\u0627\u062a \u0623\u0643\u062b\u0631 \u0645\u0648\u062b\u0648\u0642\u064a\u0629 \u0645\u0646 \u062a\u0637\u0628\u064a\u0642 \u0646\u0637\u0627\u0642\u0627\u062a \u0627\u0644\u0641\u0626\u0627\u062a \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0645\u0628\u0627\u0634\u0631\u0629\u064b\u060c \u062d\u064a\u062b \u0625\u0646 \u0645\u0648\u0642\u0639\u064a\u0646 \u064a\u0642\u0639\u0627\u0646 \u0639\u0644\u0649 \u0645\u0633\u0627\u0641\u0629 \u0634\u0627\u0637\u0626\u064a\u0629 \u0645\u062a\u0634\u0627\u0628\u0647\u0629 \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u062d\u0645\u0644 \u0643\u0644 \u0645\u0646\u0647\u0645\u0627 \u0623\u062d\u0645\u0627\u0644 \u062a\u0644\u0648\u062b \u0645\u062e\u062a\u0644\u0641\u0629 \u062c\u0648\u0647\u0631\u064a\u064b\u0627 \u0627\u0639\u062a\u0645\u0627\u062f\u064b\u0627 \u0639\u0644\u0649 \u062a\u064a\u0627\u0631 \u0627\u0644\u0631\u064a\u0627\u062d \u0627\u0644\u0645\u062d\u0644\u064a \u0648\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u062a\u0636\u0627\u0631\u064a\u0633.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0648\u0630\u0627\u062a \u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u0634\u062f\u064a\u062f<\/h2>\n\n\n\n<p>\u064a\u062e\u062a\u0644\u0641 \u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u0635\u0646\u0627\u0639\u064a \u0639\u0646 \u0627\u0644\u0636\u0628\u0627\u0628 \u0627\u0644\u0645\u0644\u062d\u064a \u0627\u0644\u0633\u0627\u062d\u0644\u064a \u0645\u0646 \u062d\u064a\u062b \u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0648\u0627\u0644\u0633\u0644\u0648\u0643\u060c \u0644\u0643\u0646\u0647 \u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u0646\u0641\u0633 \u0645\u0633\u0627\u0631 \u0627\u0644\u0641\u0634\u0644 \u0627\u0644\u0623\u0633\u0627\u0633\u064a \u2014 \u0648\u0647\u0648 \u062a\u0634\u0643\u0644 \u0637\u0628\u0642\u0629 \u0645\u0648\u0635\u0644\u0629 \u0641\u064a \u0627\u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u0631\u0637\u0628\u0629. \u0648\u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0627 \u062a\u062c\u0645\u0639 \u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0627\u0644\u0642\u0631\u064a\u0628\u0629 \u0645\u0646 \u0645\u0635\u0627\u0646\u0639 \u0627\u0644\u0623\u0633\u0645\u0646\u062a \u0623\u0648 \u0645\u0646\u0634\u0622\u062a \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u0629 \u0623\u0648 \u0645\u0645\u0631\u0627\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u0627\u062a \u0627\u0644\u062b\u0642\u064a\u0644\u0629 \u0628\u064a\u0646 \u0639\u062f\u0629 \u0645\u0635\u0627\u062f\u0631 \u0644\u0644\u062a\u0644\u0648\u062b \u0641\u064a \u0622\u0646 \u0648\u0627\u062d\u062f\u060c \u0645\u0645\u0627 \u064a\u0632\u064a\u062f \u0645\u0646 \u062a\u0639\u0642\u064a\u062f \u062a\u0635\u0646\u064a\u0641 \u0641\u0626\u0627\u062a \u0627\u0644\u062a\u0644\u0648\u062b \u0645\u0642\u0627\u0631\u0646\u0629\u064b \u0628\u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629 \u0630\u0627\u062a \u0627\u0644\u0645\u0635\u062f\u0631 \u0627\u0644\u0648\u0627\u062d\u062f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u062a\u0631\u0627\u0643\u0645 \u0627\u0644\u063a\u0628\u0627\u0631 \u0648\u062c\u0633\u064a\u0645\u0627\u062a \u0627\u0644\u0623\u0633\u0645\u0646\u062a<\/h3>\n\n\n\n<p>Cement and mineral dust deposits are typically alkaline and hygroscopic, meaning they actively draw moisture from humid air rather than requiring direct rainfall or fog to become conductive. Sites within roughly 1 km\u20132 km of active cement or aggregate processing operations frequently register non-soluble deposit density (NSDD) values well above what a generic &#8220;heavy&#8221; pollution class assumes, since NSDD measures the particulate load separately from the soluble salt component captured by ESDD. A bushing sized only against ESDD data in this environment can be under-rated even if the salt-equivalent reading looks moderate, because the particulate layer itself increases surface conductivity once wetted, independent of salt content.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0627\u0644\u062a\u0639\u0631\u0636 \u0644\u0644\u0627\u0646\u0628\u0639\u0627\u062b\u0627\u062a \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u0629\/\u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629<\/h3>\n\n\n\n<p>Chemical processing sites \u2014 fertilizer plants, refineries, and similar facilities \u2014 introduce a different variable: airborne emissions can be acidic or reactive with certain insulator materials, in addition to contributing to the conductive contamination film. Field reports from petrochemical-adjacent substations describe accelerated surface erosion on silicone housings exposed to sustained hydrocarbon or acidic vapor, showing measurable surface roughening within roughly 3 years\u20135 years of service, faster than the same material typically shows in a pure salt-fog environment. This doesn&#8217;t necessarily rule out silicone rubber, but it does mean the housing formulation and any supplementary coating should be checked against the specific chemical exposure profile rather than assumed compatible by default.<\/p>\n\n\n\n<p>Where multiple contamination sources overlap \u2014 a coastal industrial park, for example \u2014 the effective pollution class should be assigned using whichever severity indicator (ESDD or NSDD) produces the higher creepage requirement, not an average of the two. This kind of mixed-source site is also where procurement teams most often under-specify, since a generic RFQ line item rarely captures both variables \u2014 a gap covered in more detail in ZeeyiElec&#8217;s <a href=\"https:\/\/zeeyielec.com\/ar\/mv-bushing-rfq-template-technical-data\/\">\u0646\u0645\u0648\u0630\u062c \u0637\u0644\u0628 \u0639\u0631\u0636 \u0623\u0633\u0639\u0627\u0631 \u0644\u0644\u062c\u0644\u0628\u0627\u062a MV<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0628\u0631\u0627\u0645\u062c \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0648\u0627\u0644\u063a\u0633\u064a\u0644 \u0644\u0625\u0637\u0627\u0644\u0629 \u0627\u0644\u0639\u0645\u0631 \u0627\u0644\u062a\u0634\u063a\u064a\u0644\u064a<\/h2>\n\n\n\n<p>\u062d\u062a\u0649 \u0627\u0644\u0628\u0637\u0627\u0646\u0627\u062a \u0627\u0644\u0645\u064f\u062d\u062f\u064e\u0651\u062f\u0629 \u0628\u0634\u0643\u0644 \u0635\u062d\u064a\u062d \u062a\u062a\u0631\u0627\u0643\u0645 \u0639\u0644\u064a\u0647\u0627 \u0627\u0644\u0623\u0648\u0633\u0627\u062e \u0628\u0645\u0631\u0648\u0631 \u0627\u0644\u0648\u0642\u062a\u060c \u0644\u0630\u0627 \u0641\u0625\u0646 \u0628\u0631\u0646\u0627\u0645\u062c \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0648\u0627\u0644\u063a\u0633\u0644 \u0647\u0648 \u0645\u0627 \u064a\u062d\u0648\u0644 \u062f\u0648\u0646 \u0627\u0633\u062a\u0646\u0641\u0627\u062f \u0647\u0627\u0645\u0634 \u0627\u0644\u0632\u062d\u0641 \u0627\u0644\u0645\u0631\u0643\u064e\u0651\u0628 \u0628\u0648\u062a\u064a\u0631\u0629 \u0623\u0633\u0631\u0639 \u0645\u0645\u0627 \u062a\u0648\u0642\u064e\u0651\u0639\u0647 \u0627\u0644\u062a\u0635\u0645\u064a\u0645. \u0648\u062a\u0639\u062a\u0645\u062f \u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u063a\u0633\u0644 \u0648\u0641\u062a\u0631\u0627\u062a\u0647 \u0639\u0644\u0649 \u0634\u062f\u0629 \u0627\u0644\u062a\u0644\u0648\u062b \u0648\u0646\u0648\u0639 \u0627\u0644\u0645\u0627\u062f\u0629\u060c \u0648\u0639\u0644\u0649 \u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0645\u0646 \u0627\u0644\u0645\u0645\u0643\u0646 \u0641\u0635\u0644 \u0627\u0644\u0637\u0627\u0642\u0629 \u0639\u0646 \u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0628\u0623\u0645\u0627\u0646 \u0644\u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0635\u064a\u0627\u0646\u0629.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0627\u0644\u063a\u0633\u0644 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u063a\u0633\u0644 \u0628\u0639\u062f \u0641\u0635\u0644 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-04.webp-1024x559.webp\" alt=\"\u0645\u062e\u0637\u0637 \u062a\u062f\u0641\u0642 \u0627\u0644\u0642\u0631\u0627\u0631 \u0627\u0644\u0630\u064a \u064a\u0642\u0627\u0631\u0646 \u0628\u064a\u0646 \u063a\u0633\u0644 \u0627\u0644\u0639\u0648\u0627\u0632\u0644 \u0627\u0644\u0645\u062a\u0648\u0633\u0637\u0629 \u0627\u0644\u062c\u0647\u062f \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0648\u063a\u0633\u0644\u0647\u0627 \u0628\u0639\u062f \u0641\u0635\u0644 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0639\u0646\u0647\u0627\" class=\"wp-image-2059\" srcset=\"https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-04.webp-1024x559.webp 1024w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-04.webp-300x164.webp 300w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-04.webp-768x419.webp 768w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-04.webp-18x10.webp 18w, https:\/\/zeeyielec.com\/wp-content\/uploads\/2026\/07\/zeeyielec-mv-bushings-coastal-polluted-environments-figure-04.webp.webp 1408w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">\u064a\u064f\u062c\u0646\u0651\u0628 \u0627\u0644\u063a\u0633\u0644 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0646\u0642\u0637\u0627\u0639 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u060c \u0644\u0643\u0646\u0647 \u064a\u062a\u0637\u0644\u0628 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u0627\u0621\u060c \u0641\u064a \u062d\u064a\u0646 \u0623\u0646 \u0627\u0644\u063a\u0633\u0644 \u0628\u0639\u062f \u0641\u0635\u0644 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u064a\u062a\u064a\u062d \u0627\u0644\u062a\u0646\u0638\u064a\u0641 \u0627\u0644\u0645\u0628\u0627\u0634\u0631 \u062f\u0648\u0646 \u0627\u0644\u062a\u0639\u0631\u0636 \u0644\u062e\u0637\u0631 \u062d\u062f\u0648\u062b \u0642\u0641\u0632\u0629 \u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u0635\u064a\u0627\u0646\u0629.<\/figcaption><\/figure>\n\n\n\n<p>\u064a\u062a\u064a\u062d \u0627\u0644\u063a\u0633\u0644 \u0641\u064a \u062d\u0627\u0644\u0629 \u0627\u0646\u0642\u0637\u0627\u0639 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0625\u0645\u0643\u0627\u0646\u064a\u0629 \u0627\u0644\u062a\u0646\u0638\u064a\u0641 \u0627\u0644\u0645\u0628\u0627\u0634\u0631 \u0628\u0627\u0644\u0645\u0627\u0621 \u0623\u0648 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0636\u063a\u0637 \u0645\u0646\u062e\u0641\u0636 \u062f\u0648\u0646 \u0627\u0644\u0642\u0644\u0642 \u0645\u0646 \u062d\u062f\u0648\u062b \u0642\u0641\u0632\u0629 \u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0646\u0641\u0633\u0647\u0627\u060c \u0648\u064a\u064f\u0641\u0636\u0644 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 \u0639\u0645\u0648\u0645\u064b\u0627 \u0639\u0646\u062f\u0645\u0627 \u062a\u062a\u0648\u0641\u0631 \u0641\u062a\u0631\u0629 \u062a\u0648\u0642\u0641 \u0644\u0644\u0635\u064a\u0627\u0646\u0629.<\/p>\n\n\n\n<p>\u064a\u062a\u064a\u062d \u0627\u0644\u063a\u0633\u0644 \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u2014 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0645\u0627\u0621 \u0645\u0646\u0632\u0648\u0639 \u0627\u0644\u0645\u0639\u0627\u062f\u0646 \u0645\u0646 \u062e\u0644\u0627\u0644 \u0645\u0639\u062f\u0627\u062a \u063a\u0633\u0644 \u0645\u0639\u0632\u0648\u0644\u0629 \u2014 \u0644\u0634\u0631\u0643\u0627\u062a \u0627\u0644\u0645\u0631\u0627\u0641\u0642 \u062a\u062c\u0646\u0628 \u0627\u0646\u0642\u0637\u0627\u0639 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u060c \u0644\u0643\u0646\u0647 \u064a\u062a\u0637\u0644\u0628 \u0645\u0631\u0627\u0642\u0628\u0629 \u0635\u0627\u0631\u0645\u0629 \u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u0627\u0621 (\u0627\u0644\u062a\u064a \u062a\u064f\u062d\u062f\u062f \u0639\u0627\u062f\u0629\u064b \u0628\u0645\u0627 \u064a\u0632\u064a\u062f \u0639\u0646 3,000 \u03a9\u00b7\u0633\u0645 \u2014 5,000 \u0623\u0648\u0645\u00b7\u0633\u0645 \u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u0645\u062a\u0648\u0633\u0637) \u0648\u0645\u0633\u0627\u0641\u0629 \u0631\u0634 \u0622\u0645\u0646\u0629 \u0639\u0646 \u0627\u0644\u0623\u062c\u0632\u0627\u0621 \u0627\u0644\u0645\u0632\u0648\u062f\u0629 \u0628\u0627\u0644\u062a\u064a\u0627\u0631\u060c \u0646\u0638\u0631\u064b\u0627 \u0644\u0623\u0646 \u0645\u064a\u0627\u0647 \u0627\u0644\u063a\u0633\u0644 \u0627\u0644\u0645\u0648\u0635\u0644\u0629 \u0646\u0641\u0633\u0647\u0627 \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0634\u0643\u0644 \u0645\u0633\u0627\u0631\u064b\u0627 \u0644\u0644\u0627\u0646\u062f\u0644\u0627\u0639 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0623\u062b\u0646\u0627\u0621 \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u0646\u0638\u064a\u0641.<\/p>\n\n\n\n<p>Silicone rubber housings generally tolerate live washing well due to their hydrophobic recovery, while aged porcelain with heavy carbon tracking may need de-energized inspection first to confirm the surface hasn&#8217;t already degraded past the point where washing alone restores adequate performance.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0641\u062a\u0631\u0627\u062a \u0627\u0644\u0641\u062d\u0635 \u062d\u0633\u0628 \u0641\u0626\u0629 \u0627\u0644\u062a\u0644\u0648\u062b<\/h3>\n\n\n\n<p>\u064a\u0646\u0628\u063a\u064a \u0623\u0646 \u062a\u062a\u0646\u0627\u0633\u0628 \u0648\u062a\u064a\u0631\u0629 \u0627\u0644\u063a\u0633\u064a\u0644 \u0648\u0627\u0644\u0641\u062d\u0635 \u0645\u0639 \u0641\u0626\u0629 \u0627\u0644\u062a\u0644\u0648\u062b \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0627\u062a\u0628\u0627\u0639 \u062c\u062f\u0648\u0644 \u0632\u0645\u0646\u064a \u062b\u0627\u0628\u062a \u0639\u0644\u0649 \u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0623\u0633\u0637\u0648\u0644 \u0628\u0623\u0643\u0645\u0644\u0647. \u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0627 \u062a\u0645\u0631 \u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0630\u0627\u062a \u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u062e\u0641\u064a\u0641 \u0628\u0640 12 \u0634\u0647\u0631\u064b\u0627 \u0623\u0648 \u0623\u0643\u062b\u0631 \u0628\u064a\u0646 \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u063a\u0633\u064a\u0644 \u0627\u0644\u0645\u062c\u062f\u0648\u0644\u0629\u060c \u0641\u064a \u062d\u064a\u0646 \u0623\u0646 \u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629 \u0623\u0648 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0634\u062f\u064a\u062f\u0629 \u0627\u0644\u062a\u0644\u0648\u062b \u0642\u062f \u062a\u062a\u0637\u0644\u0628 \u063a\u0633\u064a\u0644\u064b\u0627 \u0631\u0628\u0639 \u0633\u0646\u0648\u064a\u064b\u0627 \u0623\u0648 \u0641\u062d\u0635\u064b\u0627 \u0628\u0635\u0631\u064a\u064b\u0627 \u0623\u0643\u062b\u0631 \u062a\u0643\u0631\u0627\u0631\u064b\u0627\u060c \u0644\u0627 \u0633\u064a\u0645\u0627 \u0628\u0639\u062f \u0645\u0648\u0633\u0645 \u0627\u0644\u0623\u0645\u0637\u0627\u0631 \u0627\u0644\u0623\u0648\u0644 \u0639\u0642\u0628 \u0628\u062f\u0621 \u0627\u0644\u062a\u0634\u063a\u064a\u0644\u060c \u062d\u064a\u062b \u064a\u0643\u0648\u0646 \u0645\u0646 \u0627\u0644\u0623\u0633\u0647\u0644 \u0627\u0643\u062a\u0634\u0627\u0641 \u0639\u0644\u0627\u0645\u0627\u062a \u0627\u0644\u0642\u0648\u0633 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0627\u0644\u0645\u0628\u0643\u0631\u0629 \u0641\u064a \u0627\u0644\u0646\u0637\u0627\u0642 \u0627\u0644\u062c\u0627\u0641 \u0642\u0628\u0644 \u0623\u0646 \u062a\u062a\u0637\u0648\u0631 \u0625\u0644\u0649 \u0622\u062b\u0627\u0631 \u0633\u062d\u0628. \u0648\u0645\u0646 \u0627\u0644\u062f\u0631\u0648\u0633 \u0627\u0644\u0645\u064a\u062f\u0627\u0646\u064a\u0629 \u0627\u0644\u0645\u062a\u0643\u0631\u0631\u0629 \u0627\u0644\u0645\u0633\u062a\u0641\u0627\u062f\u0629 \u0645\u0646 \u0628\u0631\u0627\u0645\u062c \u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u0628\u0637\u0627\u0646\u0627\u062a \u0648\u0627\u0644\u0648\u0635\u0644\u0627\u062a \u0623\u0646 \u0627\u0644\u0641\u062d\u0635 \u0627\u0644\u0628\u0635\u0631\u064a \u0648\u062d\u062f\u0647 \u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0627 \u064a\u063a\u0641\u0644 \u0627\u0644\u062a\u062a\u0628\u0639 \u0641\u064a \u0645\u0631\u0627\u062d\u0644\u0647 \u0627\u0644\u0645\u0628\u0643\u0631\u0629 \u0639\u0644\u0649 \u0627\u0644\u062c\u0627\u0646\u0628 \u0627\u0644\u0633\u0641\u0644\u064a \u0645\u0646 \u0627\u0644\u0623\u062c\u0646\u062d\u0629\u060c \u062d\u064a\u062b \u062a\u062a\u0631\u0627\u0643\u0645 \u0627\u0644\u0631\u0648\u0627\u0633\u0628 \u0628\u0639\u064a\u062f\u064b\u0627 \u0639\u0646 \u0645\u062c\u0627\u0644 \u0627\u0644\u0631\u0624\u064a\u0629 \u0627\u0644\u0645\u0628\u0627\u0634\u0631 \u2014 \u0648\u0647\u0648 \u0627\u0644\u0633\u0628\u0628 \u0627\u0644\u0630\u064a \u062f\u0641\u0639 \u0628\u0639\u0636 \u0645\u0631\u0627\u0641\u0642 \u0627\u0644\u062e\u062f\u0645\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629 \u0625\u0644\u0649 \u0627\u0644\u062a\u062d\u0648\u0644 \u0625\u0644\u0649 \u0627\u0644\u062a\u0635\u0648\u064a\u0631 \u0627\u0644\u062d\u0631\u0627\u0631\u064a \u0628\u0627\u0644\u0623\u0634\u0639\u0629 \u062a\u062d\u062a \u0627\u0644\u062d\u0645\u0631\u0627\u0621 \u0628\u0634\u0643\u0644 \u062f\u0648\u0631\u064a \u0643\u0641\u062d\u0635 \u062a\u0643\u0645\u064a\u0644\u064a \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0627\u0644\u0627\u0639\u062a\u0645\u0627\u062f \u0639\u0644\u0649 \u062c\u062f\u0627\u0648\u0644 \u0627\u0644\u063a\u0633\u064a\u0644 \u0648\u062d\u062f\u0647\u0627.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u062c\u0644\u0628\u0629 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629 \u0644\u0645\u0648\u0642\u0639\u0643<\/h2>\n\n\n\n<p>Selecting MV bushings for coastal environments comes down to three linked decisions: correctly classifying the site&#8217;s pollution severity, sizing creepage distance against that classification rather than a generic voltage-class default, and matching material \u2014 porcelain, silicone rubber, or epoxy \u2014 to the specific contamination profile, whether that&#8217;s salt-fog, cement dust, or chemical emission. Getting any one of these wrong tends to surface not at commissioning, but 12 months\u201336 months into service, once the first full wet season has tested the margin.<\/p>\n\n\n\n<p>\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u062a\u064a \u062a\u0634\u0645\u0644 \u0641\u0626\u0627\u062a \u062c\u0647\u062f \u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0645\u062a\u0639\u062f\u062f\u0629 \u0623\u0648 \u062a\u062a\u0639\u0631\u0636 \u0644\u0638\u0631\u0648\u0641 \u0645\u062e\u062a\u0644\u0637\u0629 \u0628\u064a\u0646 \u0627\u0644\u0628\u064a\u0626\u0629 \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629 \u0648\u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629\u060c \u0641\u0625\u0646 \u062a\u0642\u062f\u064a\u0645 \u0645\u0633\u062d \u0645\u0648\u062b\u0642 \u0644\u0644\u062a\u0644\u0648\u062b (\u0642\u0631\u0627\u0621\u0627\u062a ESDD\/NSDD) \u0645\u0639 \u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 \u064a\u0624\u062f\u064a \u0639\u0645\u0648\u0645\u064b\u0627 \u0625\u0644\u0649 \u062a\u062d\u062f\u064a\u062f \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0623\u0643\u062b\u0631 \u062f\u0642\u0629 \u0644\u0644\u0639\u0627\u0632\u0644 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0645\u0642\u0627\u0631\u0646\u0629 \u0628\u0627\u0644\u0627\u0639\u062a\u0645\u0627\u062f \u0639\u0644\u0649 \u062a\u0642\u062f\u064a\u0631\u0627\u062a \u0627\u0644\u0645\u0633\u0627\u0641\u0629 \u0645\u0646 \u0627\u0644\u0634\u0627\u0637\u0626 \u0648\u062d\u062f\u0647\u0627.<\/p>\n\n\n\n<p>\u062a\u062f\u0639\u0645 ZeeyiElec \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0639\u0648\u0627\u0632\u0644 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0644\u0644\u062e\u0637\u0648\u0637 \u0627\u0644\u0645\u062a\u0648\u0633\u0637\u0629 \u0627\u0644\u062c\u0647\u062f (MV) \u0641\u064a \u0641\u0626\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u0627\u0644\u062a\u064a \u062a\u062a\u0631\u0627\u0648\u062d \u0628\u064a\u0646 12 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a \u064852 \u0643\u064a\u0644\u0648 \u0641\u0648\u0644\u062a\u060c \u0645\u0639 \u062e\u064a\u0627\u0631\u0627\u062a \u0648\u0627\u062c\u0647\u0627\u062a \u0645\u062a\u0648\u0627\u0641\u0642\u0629 \u0645\u0639 \u0645\u0639\u0627\u064a\u064a\u0631 ANSI \u0648DIN \u0648\u0648\u0627\u062c\u0647\u0627\u062a \u0627\u0644\u0625\u064a\u0628\u0648\u0643\u0633\u064a \u0627\u0644\u0645\u0635\u0645\u0645\u0629 \u062e\u0635\u064a\u0635\u064b\u0627 \u0644\u062a\u0644\u0628\u064a\u0629 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u0645\u062e\u062a\u0644\u0641\u0629\u060c \u0643\u062c\u0632\u0621 \u0645\u0646 \u0646\u0637\u0627\u0642 \u0623\u0648\u0633\u0639 <a href=\"https:\/\/zeeyielec.com\/ar\/transformer-accessories\/\">\u0645\u0644\u062d\u0642\u0627\u062a \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a<\/a> \u0648 <a href=\"https:\/\/zeeyielec.com\/ar\/cable-accessories\/\">\u0645\u0644\u062d\u0642\u0627\u062a \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a<\/a> \u0627\u0644\u0645\u062d\u0641\u0638\u0629. \u0627\u0637\u0644\u0639 \u0639\u0644\u0649 \u0627\u0644\u0646\u0635 \u0627\u0644\u0643\u0627\u0645\u0644 <a href=\"https:\/\/zeeyielec.com\/ar\/transformer-accessories-selection-guide\/\">\u062e\u0631\u064a\u0637\u0629 \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0643\u0627\u0645\u0644\u0629 \u0644\u0645\u0644\u062d\u0642\u0627\u062a \u0627\u0644\u0645\u062d\u0648\u0644\u0627\u062a<\/a> \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0625\u0631\u0634\u0627\u062f\u0627\u062a \u0628\u0634\u0623\u0646 \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0632\u062d\u0641 \u0648\u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0645\u062a\u0627\u062d\u0629 \u0639\u0628\u0631 \u0645\u062c\u0645\u0648\u0639\u0629 \u0627\u0644\u0645\u0644\u062d\u0642\u0627\u062a \u0627\u0644\u0643\u0627\u0645\u0644\u0629\u060c \u0623\u0648 \u0644\u0645\u0634\u0627\u0631\u0643\u0629 \u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u062a\u0644\u0648\u062b \u0641\u064a \u0627\u0644\u0645\u0648\u0642\u0639 \u0645\u0628\u0627\u0634\u0631\u0629\u064b \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u062a\u0648\u0635\u064a\u0627\u062a \u0645\u062e\u0635\u0635\u0629 \u0628\u0634\u0623\u0646 \u0627\u0644\u0628\u0637\u0627\u0646\u0627\u062a \u0648\u062f\u0639\u0645 \u0637\u0644\u0628\u0627\u062a \u0639\u0631\u0648\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0645\u062a\u062f\u0627\u0648\u0644\u0629<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u0645\u0627 \u0647\u064a \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0632\u062d\u0641 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 \u0644\u0645\u0645\u0631 \u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0645\u062a\u0648\u0633\u0637 \u0627\u0644\u062c\u0647\u062f (MV) \u0639\u0644\u0649 \u0627\u0644\u0633\u0627\u062d\u0644\u061f<\/h3>\n\n\n\n<p>\u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u062a\u0646\u062f\u0631\u062c \u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629 \u0636\u0645\u0646 \u0641\u0626\u0627\u062a \u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u0634\u062f\u064a\u062f \u0623\u0648 \u0627\u0644\u0634\u062f\u064a\u062f \u062c\u062f\u064b\u0651\u0627 \u0648\u0641\u0642\u064b\u0627 \u0644\u0644\u0645\u0639\u064a\u0627\u0631 IEC 60815\u060c \u0644\u0630\u0627 \u064a\u062a\u0639\u064a\u0646 \u0639\u0645\u0648\u0645\u064b\u0627 \u0623\u0646 \u062a\u0643\u0648\u0646 \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u062a\u0633\u0631\u0628 \u0627\u0644\u0645\u062d\u062f\u062f\u0629 \u0623\u0643\u0628\u0631 \u0645\u0646 \u062a\u0644\u0643 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 \u0641\u064a \u0627\u0644\u0645\u0646\u0634\u0622\u062a 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Why Contamination Causes MV Bushing Failure A medium-voltage bushing rarely fails from a single overvoltage event. Failure is usually progressive: accumulated surface contamination interacts with humidity to create a conductive path across an insulator [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2055,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,3],"tags":[],"class_list":["post-2054","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-transformer-accessories-knowledge","category-useful"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/zeeyielec.com\/ar\/wp-json\/wp\/v2\/posts\/2054","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zeeyielec.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zeeyielec.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zeeyielec.com\/ar\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/zeeyielec.com\/ar\/wp-json\/wp\/v2\/comments?post=2054"}],"version-history":[{"count":1,"href":"https:\/\/zeeyielec.com\/ar\/wp-json\/wp\/v2\/posts\/2054\/revisions"}],"predecessor-version":[{"id":2060,"href":"https:\/\/zeeyielec.com\/ar\/wp-json\/wp\/v2\/posts\/2054\/revisions\/2060"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zeeyielec.com\/ar\/wp-json\/wp\/v2\/media\/2055"}],"wp:attachment":[{"href":"https:\/\/zeeyielec.com\/ar\/wp-json\/wp\/v2\/media?parent=2054"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zeeyielec.com\/ar\/wp-json\/wp\/v2\/categories?post=2054"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zeeyielec.com\/ar\/wp-json\/wp\/v2\/tags?post=2054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}