{"id":1733,"date":"2026-06-18T07:22:40","date_gmt":"2026-06-18T07:22:40","guid":{"rendered":"https:\/\/cnfuerte.com\/?post_type=solution&#038;p=1733"},"modified":"2026-06-23T09:26:42","modified_gmt":"2026-06-23T09:26:42","slug":"colombia-high-altitude-grid-insulation-coordination-for-15-36kv-overhead-lines","status":"publish","type":"solution","link":"https:\/\/cnfuerte.com\/fr\/solutions\/colombia-high-altitude-grid-insulation-coordination-for-15-36kv-overhead-lines\/","title":{"rendered":"Colombia \u2013 High-Altitude Grid Insulation Coordination for 15-36kV Overhead Lines"},"content":{"rendered":"<h3><span style=\"color: #000000;\">Project Background<\/span><\/h3>\n<p><span style=\"color: #000000;\">Colombia&#8217;s power distribution network runs largely through the <strong><b>Andes Mountains<\/b><\/strong>, at altitudes between\u00a0<strong><b>1,500 and 3,500 meters<\/b><\/strong>. At high altitudes, lower air density significantly reduces external insulation strength, requiring strict insulation correction factors. A major regional utility faced chronic issues:<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">Frequent <strong><b>flashovers and lightning trips <\/b><\/strong>during rainy seasons<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong><b>Contact burnout and arc damage <\/b><\/strong>on disconnecting switches during load switching<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">They needed a complete\u00a0<strong><b>15-36kV fuse<\/b><\/strong><strong><b>\u00a0cutout<\/b><\/strong><strong><b>\u00a0and disconnecting switch solution<\/b><\/strong>\u00a0tailored to high-altitude, high-humidity, and high-lightning environments.<\/span><\/p>\n<h3><span style=\"color: #000000;\">Fuerte\u00a0Solution<\/span><\/h3>\n<p><span style=\"color: #000000;\">Zhejiang Fuerte\u00a0provided a\u00a0<strong><b>customized insulation coordination package<\/b><\/strong>\u00a0under IEC and local RETIE technical standards:<\/span><\/p>\n<p><span style=\"color: #000000;\"><strong><b>1.HRW12-36kV Outdoor Drop-out Fuse<\/b><\/strong><\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">Creepage distance increased by\u00a0<strong><b>25% above IEC baseline <\/b><\/strong>for 3,000m altitude correction<\/span><\/li>\n<li><span style=\"color: #000000;\">Enhanced arc-extinguishing chamber for reliable short-circuit interruption in humid conditions<\/span><\/li>\n<li><span style=\"color: #000000;\">Fuse link range: 6A\u2013200A for flexible protection coordination<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\"><strong><b>2.F<\/b><\/strong><strong><b>SC<\/b><\/strong><strong><b>-36kV \/ GW-36kV Outdoor Disconnecting Switch<\/b><\/strong><\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">Optimized silicone rubber post insulators with\u00a0<strong><b>UV and tracking resistance<\/b><\/strong><\/span><\/li>\n<li><span style=\"color: #000000;\"><b><\/b><strong><b>Silver-plated contacts + self-cleaning wiping action <\/b><\/strong>\u2013 reduces contact resistance, extends service life<\/span><\/li>\n<li><span style=\"color: #000000;\">Multiple configurations: single-pole, three-pole, vertical break, horizontal break<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\"><strong><b>3.Full Technical Support<\/b><\/strong><\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">Pre-sales insulation coordination calculation based on actual altitude correction factors<\/span><\/li>\n<li><span style=\"color: #000000;\">On-site installation guidance and aftersales support<\/span><\/li>\n<\/ul>\n<h3><span style=\"color: #000000;\">Project Results &amp; Customer Feedback<\/span><\/h3>\n<p><span style=\"color: #000000;\">After\u00a0<strong><b>8 months of operation<\/b><\/strong>\u00a0(including a full rainy season), the customer reported:<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\"><b><\/b><strong><b>&gt;60% reduction <\/b><\/strong>in flashover and lightning-related trip-outs<\/span><\/li>\n<li><span style=\"color: #000000;\"><b><\/b><strong><b>70% fewer maintenance work orders <\/b><\/strong>for switch contact wear and jamming<\/span><\/li>\n<li><span style=\"color: #000000;\"><b><\/b><strong><b>100% correct fuse operation<\/b><\/strong>\u2013 no misoperations, no failures to clear faults<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\"><em><i>\u201c<\/i><\/em><em><i>Fuerte<\/i><\/em><em><i>\u00a0gave us more than just hardware \u2013 they gave us a complete insulation coordination study. Their fuses and switches perform excellently at high altitude. We have found a reliable long-term partner.\u201d<\/i><\/em><\/span><br \/>\n<span style=\"color: #000000;\">\u2014 Project Electrical Engineer, Colombia<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Project Background Colombia&#8217;s power distribution network runs largely through the Andes Mountains, at altitudes between\u00a01,500 and 3,500 meters. At high altitudes, lower air density significantly reduces external insulation strength, requiring strict insulation correction factors. A major regional utility faced chronic issues: Frequent flashovers and lightning trips during rainy seasons Contact burnout and arc damage on [&hellip;]<\/p>\n","protected":false},"featured_media":1736,"template":"","meta":{"_gspb_post_css":""},"class_list":["post-1733","solution","type-solution","status-publish","has-post-thumbnail","hentry"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":7}},"_links":{"self":[{"href":"https:\/\/cnfuerte.com\/fr\/wp-json\/wp\/v2\/solution\/1733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnfuerte.com\/fr\/wp-json\/wp\/v2\/solution"}],"about":[{"href":"https:\/\/cnfuerte.com\/fr\/wp-json\/wp\/v2\/types\/solution"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cnfuerte.com\/fr\/wp-json\/wp\/v2\/media\/1736"}],"wp:attachment":[{"href":"https:\/\/cnfuerte.com\/fr\/wp-json\/wp\/v2\/media?parent=1733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}