{"id":6662,"date":"2024-01-18T00:19:19","date_gmt":"2024-01-17T23:19:19","guid":{"rendered":"https:\/\/www.kfactor.it\/kfactor\/en\/?post_type=product&#038;p=6662"},"modified":"2026-03-23T17:12:27","modified_gmt":"2026-03-23T16:12:27","slug":"tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor","status":"publish","type":"product","link":"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/","title":{"rendered":"TTI-K &#8211; THREE PHASE K-FACTOR ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to  500kVA with K4, K13, K20 factor"},"content":{"rendered":"<h3>THREE PHASE K-FACTOR RATED ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factor<a href=\"https:\/\/www.kfactor.it\/wp-content\/uploads\/2016\/03\/ft-sam-01_.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3667 size-full\" src=\"https:\/\/www.kfactor.it\/wp-content\/uploads\/2016\/03\/ft-sam-01_-e1460711691167.jpg\" alt=\"K4 K13 K20 k-factor transformers\" width=\"252\" height=\"189\" \/><\/a><\/h3>\n<p>Certified efficiency and losses \u2013 SUITABLE FOR NON-LINEAR LOADS AND HIGH HARMONICS<\/p>\n<p>TTI-K transformers are designed to withstand the overheating effect of high harmonics and strong currents on neutral. The K-factor index shows the transformer&#8217;s ability to withstand harmonics by operating within its thermal limits, using conductors of appropriate size. The design of a K-factor transformer must consider the trend of saturation resulting from non-linear loads and continuous waveform components caused by the third harmonics. The additional currents circulating in these cases in triangle-related windings are taken into account to ensure an ideal life for the transformer. It would be a mistake to consider a de-rating factor and use common transformers: the special conditions to which these products are subjected involve a specific design.<\/p>\n<ul>\n<li>NATURAL air-like cooling TYPE AN, suitable for installation inside.<\/li>\n<li>Copper windings<\/li>\n<li>Low losses grain oriented magnetic core<\/li>\n<li><strong>Electrical insulation screen between primary and secondary connected to earth<\/strong><\/li>\n<\/ul>\n<p><strong>\u00a0<\/strong>ELECTRICAL SPECIFICATION<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"359\">Rated power:<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>15KVA to 300kVA<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Input voltage (primary):<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>400V TRIANGLE<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Output voltage (secondary):<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>6% of nominal voltage<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Input adjustment sockets<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>2&#215;2.5% FCAN, FCBN 2&#215;2.5%<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Secondary tension:<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>400Vac star &#8211; N (nominal voltage)<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Maximum voltage drop at full load<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>Up to 3%<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Frequency:<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>50 Hz<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Connection group<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>DELTA\/STAR-N<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Vector Group<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>Dyn11<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Efficiency:<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>see table<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Isolation level (effective value)<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>4 kV<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Short circuit voltage<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>3%<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Inrush current<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>&lt; 10In<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Temperature class<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>H\/H<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Maximum overtemperature limits (a.t. 25\u00b0C)<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>120\u00b0C<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Environmental temperatures<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>-5\u00b0C +40\u00b0C<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">sound level<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>&lt; 45 dB (A) at 1m.<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Relative humidity<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>50% &#8211; 95%<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Operating altitude without derating:<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>up to 1000 m *<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Protection grade<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>IP00<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Protection class<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>I<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"359\">Applied rules:<\/td>\n<td style=\"text-align: center;\" width=\"359\"><strong>EN61558-2-1 &#8211; EN61558-2-4<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em><u>\u00a0<\/u><\/em><\/p>\n<p>MECHANICAL CHARACTERISTIC<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"364\">Lifting lugs<\/td>\n<td style=\"text-align: center;\" width=\"364\"><strong>YES<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"364\">Rating plate<\/td>\n<td style=\"text-align: center;\" width=\"364\"><strong>YES<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"364\">Earth bolt<\/td>\n<td style=\"text-align: center;\" width=\"364\"><strong>YES<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>More accessories and fittings on request<\/p>\n<p><strong><em>* for installations at higher altitudes, an adequate power reduction (&#8220;derating&#8221;) must be considered<\/em><\/strong><\/p>\n<p><strong>LOAD TYPE AND RELATIONSHIP WITH K-FACTOR<\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"576\">Lighting systems with discharge lamps<\/td>\n<td style=\"text-align: center;\" width=\"141\">K-4<\/td>\n<\/tr>\n<tr>\n<td width=\"576\">Ups with inbound filters<\/td>\n<td style=\"text-align: center;\" width=\"141\">K-4<\/td>\n<\/tr>\n<tr>\n<td width=\"576\">Welding machines<\/td>\n<td style=\"text-align: center;\" width=\"141\">K-4<\/td>\n<\/tr>\n<tr>\n<td width=\"576\">Heating systems \/ induction furnaces<\/td>\n<td style=\"text-align: center;\" width=\"141\">K-4<\/td>\n<\/tr>\n<tr>\n<td width=\"576\">PLC and solid state controls<\/td>\n<td style=\"text-align: center;\" width=\"141\">K-4<\/td>\n<\/tr>\n<tr>\n<td width=\"576\">Telecommunications systems<\/td>\n<td style=\"text-align: center;\" width=\"141\">K-13<\/td>\n<\/tr>\n<tr>\n<td width=\"576\">UPS without inbound filters<\/td>\n<td style=\"text-align: center;\" width=\"141\">K-13<\/td>\n<\/tr>\n<tr>\n<td width=\"576\">Electrical grid in circuits of general care areas of health facilities and school classrooms<\/td>\n<td style=\"text-align: center;\" width=\"141\">K-13<\/td>\n<\/tr>\n<tr>\n<td width=\"576\">Power circuits that provide inspection or testing equipment on an assembly or production line<\/td>\n<td style=\"text-align: center;\" width=\"141\">K-13<\/td>\n<\/tr>\n<tr>\n<td width=\"576\">Computer Mainframe<\/td>\n<td style=\"text-align: center;\" width=\"141\">K-20<\/td>\n<\/tr>\n<tr>\n<td width=\"576\">Solid-state engine drives<\/td>\n<td style=\"text-align: center;\" width=\"141\">K-20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>DESIGN STYLE AND FEATURES<\/strong><\/p>\n<p>Electrostatic shield between wraps<\/p>\n<p>Completely isolates the distribution system from the dangers of harmonics and power disturbances<\/p>\n<p>Fully closed UN ventilated IP23 design<\/p>\n<p>Low temperature increase<\/p>\n<p>Copper wraps<\/p>\n<p>The magnetic and resistive properties of K-factor transformers are particularly improved as they are designed specifically for non-linear loads. Downgrading the rated power of a transformer does not guarantee that it will work properly if subjected to non-linear loads. Copper windings and a neutral conductor of double size, allow you to\u00a0 properly handle the heat generated by the \u00a0harmonics.<\/p>\n<table style=\"height: 28px; background-color: #ffffff;\" width=\"700\">\n<tbody>\n<tr>\n<td colspan=\"2\">\u00a0<a href=\"https:\/\/www.kfactor.it\/wp-content\/uploads\/2016\/03\/di-ttpm-01.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3668 size-full\" src=\"https:\/\/www.kfactor.it\/wp-content\/uploads\/2016\/03\/di-sam.jpg\" alt=\"drawing of k-factor transformers\" width=\"403\" height=\"236\" srcset=\"https:\/\/www.kfactor.it\/wp-content\/uploads\/2016\/03\/di-sam.jpg 403w, https:\/\/www.kfactor.it\/wp-content\/uploads\/2016\/03\/di-sam-350x205.jpg 350w, https:\/\/www.kfactor.it\/wp-content\/uploads\/2016\/03\/di-sam-400x234.jpg 400w\" sizes=\"auto, (max-width: 403px) 100vw, 403px\" \/><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div align=\"left\">\n<table border=\"1\" width=\"650\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td colspan=\"3\" valign=\"top\" width=\"644\"><b><span style=\"color: #ff0000; font-family: 'Trebuchet MS';\">\u00a0K-4 RATED TRANSFORMERS<\/span><\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div align=\"left\">\n<table border=\"1\" width=\"700\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td align=\"center\" bgcolor=\"#A7A7A7\" width=\"127\">power<\/td>\n<td rowspan=\"2\" align=\"center\" bgcolor=\"#A7A7A7\" width=\"126\">part no<\/td>\n<td colspan=\"3\" align=\"center\" bgcolor=\"#A7A7A7\">dimensions mm.<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">weight<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" bgcolor=\"#A7A7A7\" width=\"127\">KVA<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">A<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">B<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">C<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">kg.<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">15<\/td>\n<td align=\"center\" width=\"126\">TTI427-K4<\/td>\n<td align=\"center\">550<\/td>\n<td align=\"center\">365<\/td>\n<td align=\"center\">520<\/td>\n<td align=\"center\">120<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">30<\/td>\n<td align=\"center\" width=\"126\">TTI547-K4<\/td>\n<td align=\"center\">710<\/td>\n<td align=\"center\">440<\/td>\n<td align=\"center\">770<\/td>\n<td align=\"center\">150<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">45<\/td>\n<td align=\"center\" width=\"126\">TTI667-K4<\/td>\n<td align=\"center\">775<\/td>\n<td align=\"center\">570<\/td>\n<td align=\"center\">825<\/td>\n<td align=\"center\">170<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">75<\/td>\n<td align=\"center\" width=\"126\">TTI757-K4<\/td>\n<td align=\"center\">775<\/td>\n<td align=\"center\">570<\/td>\n<td align=\"center\">825<\/td>\n<td align=\"center\">250<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">100<\/td>\n<td align=\"center\" width=\"126\">TTI807-K4<\/td>\n<td align=\"center\">775<\/td>\n<td align=\"center\">570<\/td>\n<td align=\"center\">825<\/td>\n<td align=\"center\">350<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">150<\/td>\n<td align=\"center\" width=\"126\">TTI817-K4<\/td>\n<td align=\"center\">1100<\/td>\n<td align=\"center\">700<\/td>\n<td align=\"center\">1000<\/td>\n<td align=\"center\">420<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">200<\/td>\n<td align=\"center\" width=\"126\">TTI827-K4<\/td>\n<td align=\"center\">1100<\/td>\n<td align=\"center\">700<\/td>\n<td align=\"center\">1000<\/td>\n<td align=\"center\">600<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">300<\/td>\n<td align=\"center\" width=\"126\">TTI835-K4<\/td>\n<td align=\"center\">1100<\/td>\n<td align=\"center\">700<\/td>\n<td align=\"center\">1000<\/td>\n<td align=\"center\">690<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>&nbsp;<\/p>\n<div align=\"left\">\n<table border=\"1\" width=\"650\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td valign=\"top\" width=\"644\"><b><span style=\"color: #ff0000; font-family: 'Trebuchet MS';\">\u00a0K-13 RATED TRANSFORMERS<\/span><\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div align=\"left\">\n<table border=\"1\" width=\"700\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td align=\"center\" bgcolor=\"#A7A7A7\" width=\"127\">power<\/td>\n<td rowspan=\"2\" align=\"center\" bgcolor=\"#A7A7A7\" width=\"126\">part no.<\/td>\n<td colspan=\"3\" align=\"center\" bgcolor=\"#A7A7A7\">dimensions mm.<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">weight<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" bgcolor=\"#A7A7A7\" width=\"127\">KVA<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">A<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">B<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">C<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">kg.<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">15<\/td>\n<td align=\"center\" width=\"126\">TTI427-K13<\/td>\n<td align=\"center\">710<\/td>\n<td align=\"center\">440<\/td>\n<td align=\"center\">770<\/td>\n<td align=\"center\">140<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">30<\/td>\n<td align=\"center\" width=\"126\">TTI547-K13<\/td>\n<td align=\"center\">710<\/td>\n<td align=\"center\">440<\/td>\n<td align=\"center\">770<\/td>\n<td align=\"center\">180<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">45<\/td>\n<td align=\"center\" width=\"126\">TTI667-K13<\/td>\n<td align=\"center\">775<\/td>\n<td align=\"center\">570<\/td>\n<td align=\"center\">825<\/td>\n<td align=\"center\">270<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">75<\/td>\n<td align=\"center\" width=\"126\">TTI757-K13<\/td>\n<td align=\"center\">775<\/td>\n<td align=\"center\">570<\/td>\n<td align=\"center\">825<\/td>\n<td align=\"center\">360<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">100<\/td>\n<td align=\"center\" width=\"126\">TTI807-K13<\/td>\n<td align=\"center\">1100<\/td>\n<td align=\"center\">700<\/td>\n<td align=\"center\">1000<\/td>\n<td align=\"center\">440<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">150<\/td>\n<td align=\"center\" width=\"126\">TTI817-K13<\/td>\n<td align=\"center\">1100<\/td>\n<td align=\"center\">700<\/td>\n<td align=\"center\">1000<\/td>\n<td align=\"center\">600<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">200<\/td>\n<td align=\"center\" width=\"126\">TTI827-K13<\/td>\n<td align=\"center\">1200<\/td>\n<td align=\"center\">800<\/td>\n<td align=\"center\">1400<\/td>\n<td align=\"center\">680<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">300<\/td>\n<td align=\"center\" width=\"126\">TTI835-K13<\/td>\n<td align=\"center\">1200<\/td>\n<td align=\"center\">800<\/td>\n<td align=\"center\">1400<\/td>\n<td align=\"center\">1100<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<div align=\"left\">\n<table border=\"1\" width=\"650\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td valign=\"top\" width=\"644\"><b><span style=\"color: #ff0000; font-family: 'Trebuchet MS';\">\u00a0K-20\u00a0RATED TRANSFORMERS<\/span><\/b><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div align=\"left\">\n<table border=\"1\" width=\"700\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td align=\"center\" bgcolor=\"#A7A7A7\" width=\"127\">power<\/td>\n<td rowspan=\"2\" align=\"center\" bgcolor=\"#A7A7A7\" width=\"126\">part no.<\/td>\n<td colspan=\"3\" align=\"center\" bgcolor=\"#A7A7A7\">dimensions mm.<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">weight<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" bgcolor=\"#A7A7A7\" width=\"127\">KVA<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">A<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">B<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">C<\/td>\n<td align=\"center\" bgcolor=\"#A7A7A7\">kg.<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">15<\/td>\n<td align=\"center\" width=\"126\">TTI427-K20<\/td>\n<td align=\"center\">710<\/td>\n<td align=\"center\">440<\/td>\n<td align=\"center\">770<\/td>\n<td align=\"center\">150<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">30<\/td>\n<td align=\"center\" width=\"126\">TTI547-K20<\/td>\n<td align=\"center\">775<\/td>\n<td align=\"center\">570<\/td>\n<td align=\"center\">825<\/td>\n<td align=\"center\">240<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">45<\/td>\n<td align=\"center\" width=\"126\">TTI667-K20<\/td>\n<td align=\"center\">775<\/td>\n<td align=\"center\">570<\/td>\n<td align=\"center\">825<\/td>\n<td align=\"center\">290<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">75<\/td>\n<td align=\"center\" width=\"126\">TTI757-K20<\/td>\n<td align=\"center\">775<\/td>\n<td align=\"center\">570<\/td>\n<td align=\"center\">825<\/td>\n<td align=\"center\">460<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">100<\/td>\n<td align=\"center\" width=\"126\">TTI807-K20<\/td>\n<td align=\"center\">1100<\/td>\n<td align=\"center\">700<\/td>\n<td align=\"center\">1000<\/td>\n<td align=\"center\">530<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">150<\/td>\n<td align=\"center\" width=\"126\">TTI817-K20<\/td>\n<td align=\"center\">1200<\/td>\n<td align=\"center\">800<\/td>\n<td align=\"center\">1400<\/td>\n<td align=\"center\">750<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">200<\/td>\n<td align=\"center\" width=\"126\">TTI827-K20<\/td>\n<td align=\"center\">1200<\/td>\n<td align=\"center\">800<\/td>\n<td align=\"center\">1400<\/td>\n<td align=\"center\">980<\/td>\n<\/tr>\n<tr>\n<td align=\"center\" width=\"127\">300<\/td>\n<td align=\"center\" width=\"126\">TTI835-K20<\/td>\n<td align=\"center\">1200<\/td>\n<td align=\"center\">800<\/td>\n<td align=\"center\">1400<\/td>\n<td align=\"center\">1250<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>&nbsp;<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>THREE PHASE K-FACTOR RATED ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factor Certified efficiency and losses \u2013 SUITABLE FOR NON-LINEAR LOADS AND HIGH HARMONICS TTI-K transformers are designed to withstand the overheating effect of high harmonics and strong currents on neutral. The K-factor index shows the transformer&#8217;s ability [&hellip;]<\/p>\n","protected":false},"featured_media":12657,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[229,227],"product_tag":[589,283,309,592,593,591,594,308,588],"class_list":["post-6662","product","type-product","status-publish","has-post-thumbnail","product_cat-three-phase-isolation-transformers","product_cat-three-phase-transformers","product_tag-harmonics-transformer","product_tag-isolation","product_tag-isolation-transformer-2","product_tag-k-13-transformer","product_tag-k-20-transformer","product_tag-k-4-transformer","product_tag-k-factor-transformer","product_tag-transformer-2","product_tag-transformer-for-data-center","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author","","first","instock","featured","taxable","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>TTI-K - THREE PHASE K-FACTOR ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factor - K-factor<\/title>\n<meta name=\"description\" content=\"TTI-K three-phase transformers (15-500kVA) for non-linear loads with K4, K13, K20 factors. Designed to resist harmonic overheating, featuring an electrostatic shield.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TTI-K - THREE PHASE K-FACTOR ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factor - K-factor\" \/>\n<meta property=\"og:description\" content=\"TTI-K three-phase transformers (15-500kVA) for non-linear loads with K4, K13, K20 factors. Designed to resist harmonic overheating, featuring an electrostatic shield.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/\" \/>\n<meta property=\"og:site_name\" content=\"K-factor\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-23T16:12:27+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.kfactor.it\/wp-content\/uploads\/2024\/04\/ft1280-sam07-44.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"720\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/three-phase-transformers\\\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\\\/\",\"url\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/three-phase-transformers\\\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\\\/\",\"name\":\"TTI-K - THREE PHASE K-FACTOR ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factor - K-factor\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/three-phase-transformers\\\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/three-phase-transformers\\\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.kfactor.it\\\/wp-content\\\/uploads\\\/2024\\\/04\\\/ft1280-sam07-44.jpg\",\"datePublished\":\"2024-01-17T23:19:19+00:00\",\"dateModified\":\"2026-03-23T16:12:27+00:00\",\"description\":\"TTI-K three-phase transformers (15-500kVA) for non-linear loads with K4, K13, K20 factors. Designed to resist harmonic overheating, featuring an electrostatic shield.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/three-phase-transformers\\\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/three-phase-transformers\\\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/three-phase-transformers\\\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.kfactor.it\\\/wp-content\\\/uploads\\\/2024\\\/04\\\/ft1280-sam07-44.jpg\",\"contentUrl\":\"https:\\\/\\\/www.kfactor.it\\\/wp-content\\\/uploads\\\/2024\\\/04\\\/ft1280-sam07-44.jpg\",\"width\":1280,\"height\":720,\"caption\":\"box per trasformatori\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/electrical-transformers\\\/three-phase-transformers\\\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"PRODUCTS\",\"item\":\"https:\\\/\\\/www.kfactor.it\\\/en\\\/shop\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"TTI-K &#8211; THREE PHASE K-FACTOR ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factor\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.kfactor.it\\\/#website\",\"url\":\"https:\\\/\\\/www.kfactor.it\\\/\",\"name\":\"K-factor\",\"description\":\"ELECTRONICS MADE EASY\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.kfactor.it\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"TTI-K - THREE PHASE K-FACTOR ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factor - K-factor","description":"TTI-K three-phase transformers (15-500kVA) for non-linear loads with K4, K13, K20 factors. Designed to resist harmonic overheating, featuring an electrostatic shield.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/","og_locale":"en_US","og_type":"article","og_title":"TTI-K - THREE PHASE K-FACTOR ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factor - K-factor","og_description":"TTI-K three-phase transformers (15-500kVA) for non-linear loads with K4, K13, K20 factors. Designed to resist harmonic overheating, featuring an electrostatic shield.","og_url":"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/","og_site_name":"K-factor","article_modified_time":"2026-03-23T16:12:27+00:00","og_image":[{"width":1280,"height":720,"url":"https:\/\/www.kfactor.it\/wp-content\/uploads\/2024\/04\/ft1280-sam07-44.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/","url":"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/","name":"TTI-K - THREE PHASE K-FACTOR ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factor - K-factor","isPartOf":{"@id":"https:\/\/www.kfactor.it\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/#primaryimage"},"image":{"@id":"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/#primaryimage"},"thumbnailUrl":"https:\/\/www.kfactor.it\/wp-content\/uploads\/2024\/04\/ft1280-sam07-44.jpg","datePublished":"2024-01-17T23:19:19+00:00","dateModified":"2026-03-23T16:12:27+00:00","description":"TTI-K three-phase transformers (15-500kVA) for non-linear loads with K4, K13, K20 factors. Designed to resist harmonic overheating, featuring an electrostatic shield.","breadcrumb":{"@id":"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/#primaryimage","url":"https:\/\/www.kfactor.it\/wp-content\/uploads\/2024\/04\/ft1280-sam07-44.jpg","contentUrl":"https:\/\/www.kfactor.it\/wp-content\/uploads\/2024\/04\/ft1280-sam07-44.jpg","width":1280,"height":720,"caption":"box per trasformatori"},{"@type":"BreadcrumbList","@id":"https:\/\/www.kfactor.it\/en\/shop\/electrical-transformers\/three-phase-transformers\/tti-k-three-phase-k-factor-isolation-transfomers-for-non-linear-loads-from-10-to-500kva-with-k4-k13-k20-factor\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"PRODUCTS","item":"https:\/\/www.kfactor.it\/en\/shop\/"},{"@type":"ListItem","position":2,"name":"TTI-K &#8211; THREE PHASE K-FACTOR ISOLATION TRANSFOMERS FOR NON LINEAR LOADS from 10 to 500kVA with K4, K13, K20 factor"}]},{"@type":"WebSite","@id":"https:\/\/www.kfactor.it\/#website","url":"https:\/\/www.kfactor.it\/","name":"K-factor","description":"ELECTRONICS MADE EASY","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.kfactor.it\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.kfactor.it\/en\/wp-json\/wp\/v2\/product\/6662","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kfactor.it\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.kfactor.it\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kfactor.it\/en\/wp-json\/wp\/v2\/media\/12657"}],"wp:attachment":[{"href":"https:\/\/www.kfactor.it\/en\/wp-json\/wp\/v2\/media?parent=6662"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.kfactor.it\/en\/wp-json\/wp\/v2\/product_brand?post=6662"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.kfactor.it\/en\/wp-json\/wp\/v2\/product_cat?post=6662"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.kfactor.it\/en\/wp-json\/wp\/v2\/product_tag?post=6662"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}