{"id":3720,"date":"2026-02-27T10:27:41","date_gmt":"2026-02-27T10:27:41","guid":{"rendered":"https:\/\/labpro.bg\/?p=3720"},"modified":"2026-04-21T19:05:04","modified_gmt":"2026-04-21T19:05:04","slug":"kontrol-na-impedansa-na-zashhitniya-kontur-faza-zashhiten-provodnik","status":"publish","type":"post","link":"https:\/\/labpro.bg\/en\/kontrol-na-impedansa-na-zashhitniya-kontur-faza-zashhiten-provodnik\/","title":{"rendered":"Impedance control of the \"phase\u2013ground\" protective circuit"},"content":{"rendered":"<p data-rm-block-id=\"block-1\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-3723 size-large\" src=\"https:\/\/labpro.bg\/wp-content\/uploads\/2026\/02\/981404_1280x800-1024x682.webp\" alt=\"\" width=\"1024\" height=\"682\" srcset=\"https:\/\/labpro.bg\/wp-content\/uploads\/2026\/02\/981404_1280x800-1024x682.webp 1024w, https:\/\/labpro.bg\/wp-content\/uploads\/2026\/02\/981404_1280x800-980x653.webp 980w, https:\/\/labpro.bg\/wp-content\/uploads\/2026\/02\/981404_1280x800-480x320.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/p>\n<h1 data-rm-block-id=\"block-2\">Regulatory requirements<\/h1>\n<h4 data-rm-block-id=\"block-3\"><a href=\"https:\/\/www.gli.government.bg\/bg\/node\/9551\" target=\"_blank\" rel=\"noopener\" data-cmp-ab=\"2\">REGULATION No. 16-116, published in the State Gazette, Issue No. 26, March 7, 2008<\/a><\/h4>\n<div class=\"et_post_meta_wrapper\">\n<p data-rm-block-id=\"block-4\">\u041a\u043e\u043d\u0442\u0440\u043e\u043b \u043d\u0430 \u0438\u043c\u043f\u0435\u0434\u0430\u043d\u0441\u0430 \u043d\u0430 \u0437\u0430\u0449\u0438\u0442\u043d\u0438\u044f \u043a\u043e\u043d\u0442\u0443\u0440 \u201e\u0444\u0430\u0437\u0430 \u2013 \u0437\u0430\u0449\u0438\u0442\u0435\u043d \u043f\u0440\u043e\u0432\u043e\u0434\u043d\u0438\u043a\u201c \u0435 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u043d \u0430\u0441\u043f\u0435\u043a\u0442 \u0432 \u043e\u0441\u0438\u0433\u0443\u0440\u044f\u0432\u0430\u043d\u0435\u0442\u043e \u043d\u0430 \u0435\u043b\u0435\u043a\u0442\u0440\u0438\u0447\u0435\u0441\u043a\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442. \u0421\u043f\u0430\u0437\u0432\u0430\u043d\u0435\u0442\u043e \u043d\u0430 \u043d\u043e\u0440\u043c\u0430\u0442\u0438\u0432\u043d\u0438 \u0438\u0437\u0438\u0441\u043a\u0432\u0430\u043d\u0438\u044f \u0438 \u043f\u0440\u0430\u0432\u0438\u043b\u043d\u0438\u0446\u0438 \u0435 \u043e\u0442 \u0441\u044a\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0437\u0430 \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0430\u043d\u0435 \u043d\u0430 \u043d\u0430\u0434\u0435\u0436\u0434\u043d\u043e\u0441\u0442\u0442\u0430 \u043d\u0430 \u0435\u043b\u0435\u043a\u0442\u0440\u0438\u0447\u0435\u0441\u043a\u0438\u0442\u0435 \u0438\u043d\u0441\u0442\u0430\u043b\u0430\u0446\u0438\u0438. \u041f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u043d\u0430 \u0438\u043c\u043f\u0435\u0434\u0430\u043d\u0441\u0430 \u0442\u0440\u044f\u0431\u0432\u0430 \u0434\u0430 \u0441\u0435 \u0438\u0437\u0432\u044a\u0440\u0448\u0432\u0430 \u0440\u0435\u0434\u043e\u0432\u043d\u043e, \u0437\u0430 \u0434\u0430 \u0441\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438, \u0447\u0435 \u0437\u0430\u0449\u0438\u0442\u043d\u0438\u044f\u0442 \u043a\u043e\u043d\u0442\u0443\u0440 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u0430 \u043e\u043f\u0442\u0438\u043c\u0430\u043b\u043d\u043e. \u0414\u043e\u0431\u0440\u0438 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0438 \u0432\u043a\u043b\u044e\u0447\u0432\u0430\u0442 \u0438\u0437\u043f\u043e\u043b\u0437\u0432\u0430\u043d\u0435\u0442\u043e \u043d\u0430 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0438\u0437\u0438\u0440\u0430\u043d\u0438 \u043c\u0435\u0442\u043e\u0434\u0438 \u0437\u0430 \u0438\u0437\u043c\u0435\u0440\u0432\u0430\u043d\u0435 \u0438 \u0430\u043d\u0430\u043b\u0438\u0437, \u043a\u043e\u0438\u0442\u043e \u043e\u0441\u0438\u0433\u0443\u0440\u044f\u0432\u0430\u0442 \u0442\u043e\u0447\u043d\u0438 \u0438 \u043f\u043e\u0432\u0442\u043e\u0440\u044f\u0435\u043c\u0438 \u0440\u0435\u0437\u0443\u043b\u0442\u0430\u0442\u0438. \u041e\u0441\u0432\u0435\u043d \u0442\u043e\u0432\u0430, \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u0435\u0442\u043e \u043d\u0430 \u043f\u0435\u0440\u0441\u043e\u043d\u0430\u043b\u0430 \u0437\u0430 \u043f\u0440\u0430\u0432\u0438\u043b\u043d\u043e\u0442\u043e \u0438\u0437\u043f\u044a\u043b\u043d\u0435\u043d\u0438\u0435 \u043d\u0430 \u0442\u0435\u0441\u0442\u043e\u0432\u0435\u0442\u0435 \u0435 \u043e\u0442 \u043a\u043b\u044e\u0447\u043e\u0432\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0437\u0430 \u043f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0442\u044f\u0432\u0430\u043d\u0435 \u043d\u0430 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0438 \u0438 \u043e\u0441\u0438\u0433\u0443\u0440\u044f\u0432\u0430\u043d\u0435 \u043d\u0430 \u0434\u044a\u043b\u0433\u043e\u0441\u0440\u043e\u0447\u043d\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442.<\/p>\n<p class=\"post-meta\" data-rm-block-id=\"block-5\">For fixed electrical installations, the impedance of the \"phase\u2013ground\" protective circuit is measured and evaluated at intervals specified in the electrical installation design and in internal instructions that reflect the specific characteristics of individual electrical energy consumers, as well as following major repairs to the installations and by the power engineer\u2014but at least once every five years.<\/p>\n<p data-rm-block-id=\"block-6\">For electrical installations that are temporary in nature, the impedance of the protective circuit (\"phase\u2013protective conductor\" or \"phase\u2013PEN conductor\") shall be measured and evaluated:<\/p>\n<ol>\n<li data-rm-block-id=\"block-7\">whenever equipment, facilities, machinery, devices, installations, etc., are put into service for the first time;<\/li>\n<li data-rm-block-id=\"block-8\">after each relocation and commissioning of equipment, machinery, devices, etc., at a new work site;<\/li>\n<li data-rm-block-id=\"block-9\">following repairs and renovations that affect the effectiveness of the grounding.<\/li>\n<\/ol>\n<p data-rm-block-id=\"block-10\">\u041a\u043e\u043d\u0442\u0440\u043e\u043b \u043d\u0430 \u0438\u043c\u043f\u0435\u0434\u0430\u043d\u0441\u0430 \u043d\u0430 \u0437\u0430\u0449\u0438\u0442\u043d\u0438\u044f \u043a\u043e\u043d\u0442\u0443\u0440 \u201e\u0444\u0430\u0437\u0430 \u2013 \u0437\u0430\u0449\u0438\u0442\u0435\u043d \u043f\u0440\u043e\u0432\u043e\u0434\u043d\u0438\u043a\u201c \u0435 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u043d \u0430\u0441\u043f\u0435\u043a\u0442 \u0432 \u043e\u0441\u0438\u0433\u0443\u0440\u044f\u0432\u0430\u043d\u0435\u0442\u043e \u043d\u0430 \u0435\u043b\u0435\u043a\u0442\u0440\u0438\u0447\u0435\u0441\u043a\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442. \u0421\u043f\u0430\u0437\u0432\u0430\u043d\u0435\u0442\u043e \u043d\u0430 \u043d\u043e\u0440\u043c\u0430\u0442\u0438\u0432\u043d\u0438 \u0438\u0437\u0438\u0441\u043a\u0432\u0430\u043d\u0438\u044f \u0438 \u043f\u0440\u0430\u0432\u0438\u043b\u043d\u0438\u0446\u0438 \u0435 \u043e\u0442 \u0441\u044a\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0437\u0430 \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0430\u043d\u0435 \u043d\u0430 \u043d\u0430\u0434\u0435\u0436\u0434\u043d\u043e\u0441\u0442\u0442\u0430 \u043d\u0430 \u0435\u043b\u0435\u043a\u0442\u0440\u0438\u0447\u0435\u0441\u043a\u0438\u0442\u0435 \u0438\u043d\u0441\u0442\u0430\u043b\u0430\u0446\u0438\u0438. 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\u0438 \u0430\u043d\u0430\u043b\u0438\u0437, \u043a\u043e\u0438\u0442\u043e \u043e\u0441\u0438\u0433\u0443\u0440\u044f\u0432\u0430\u0442 \u0442\u043e\u0447\u043d\u0438 \u0438 \u043f\u043e\u0432\u0442\u043e\u0440\u044f\u0435\u043c\u0438 \u0440\u0435\u0437\u0443\u043b\u0442\u0430\u0442\u0438. \u041e\u0441\u0432\u0435\u043d \u0442\u043e\u0432\u0430, \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u0435\u0442\u043e \u043d\u0430 \u043f\u0435\u0440\u0441\u043e\u043d\u0430\u043b\u0430 \u0437\u0430 \u043f\u0440\u0430\u0432\u0438\u043b\u043d\u043e\u0442\u043e \u0438\u0437\u043f\u044a\u043b\u043d\u0435\u043d\u0438\u0435 \u043d\u0430 \u0442\u0435\u0441\u0442\u043e\u0432\u0435\u0442\u0435 \u0435 \u043e\u0442 \u043a\u043b\u044e\u0447\u043e\u0432\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0437\u0430 \u043f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0442\u044f\u0432\u0430\u043d\u0435 \u043d\u0430 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0438 \u0438 \u043e\u0441\u0438\u0433\u0443\u0440\u044f\u0432\u0430\u043d\u0435 \u043d\u0430 \u0434\u044a\u043b\u0433\u043e\u0441\u0440\u043e\u0447\u043d\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u041d\u043e\u0440\u043c\u0430\u0442\u0438\u0432\u043d\u0438 \u0438\u0437\u0438\u0441\u043a\u0432\u0430\u043d\u0438\u044f \u041d\u0410\u0420\u0415\u0414\u0411\u0410 \u2116 16-116\u00a0\u041e\u0431\u043d. \u0414\u0412. \u0431\u0440.26 \u043e\u0442 7 \u041c\u0430\u0440\u0442 2008\u0433. \u041a\u043e\u043d\u0442\u0440\u043e\u043b \u043d\u0430 \u0438\u043c\u043f\u0435\u0434\u0430\u043d\u0441\u0430 \u043d\u0430 \u0437\u0430\u0449\u0438\u0442\u043d\u0438\u044f \u043a\u043e\u043d\u0442\u0443\u0440 \u201e\u0444\u0430\u0437\u0430 \u2013 \u0437\u0430\u0449\u0438\u0442\u0435\u043d \u043f\u0440\u043e\u0432\u043e\u0434\u043d\u0438\u043a\u201c \u0435 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u043d 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","_glsr_average":0,"_glsr_ranking":0,"_glsr_reviews":0,"footnotes":""},"categories":[45],"tags":[],"class_list":["post-3720","post","type-post","status-publish","format-standard","hentry","category-elektrobezopasnost"],"_links":{"self":[{"href":"https:\/\/labpro.bg\/en\/wp-json\/wp\/v2\/posts\/3720","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/labpro.bg\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/labpro.bg\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/labpro.bg\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/labpro.bg\/en\/wp-json\/wp\/v2\/comments?post=3720"}],"version-history":[{"count":8,"href":"https:\/\/labpro.bg\/en\/wp-json\/wp\/v2\/posts\/3720\/revisions"}],"predecessor-version":[{"id":4860,"href":"https:\/\/labpro.bg\/en\/wp-json\/wp\/v2\/posts\/3720\/revisions\/4860"}],"wp:attachment":[{"href":"https:\/\/labpro.bg\/en\/wp-json\/wp\/v2\/media?parent=3720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/labpro.bg\/en\/wp-json\/wp\/v2\/categories?post=3720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/labpro.bg\/en\/wp-json\/wp\/v2\/tags?post=3720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}