{"id":3081,"date":"2026-09-21T10:00:00","date_gmt":"2026-09-21T02:00:00","guid":{"rendered":"https:\/\/anwellelectric.com\/?p=3081"},"modified":"2026-09-21T10:00:00","modified_gmt":"2026-09-21T02:00:00","slug":"nhn-vs-nmn-vs-dmd-flexible-composite-insulation","status":"publish","type":"post","link":"https:\/\/anwellelectric.com\/es\/nhn-vs-nmn-vs-dmd-flexible-composite-insulation\/","title":{"rendered":"NHN vs NMN vs DMD: \u00bfQu\u00e9 aislamiento compuesto flexible deber\u00eda especificar?"},"content":{"rendered":"<p>If you already know <strong>NMN<\/strong> y <strong>DMD<\/strong>, the next question is almost always <strong>NHN<\/strong>. These three flexible composites cover the full thermal ladder for transformer and motor insulation \u2014 yet they are easy to confuse on a datasheet because the names differ by a single letter and the structures look alike. This guide completes the picture started in our <a href=\"https:\/\/anwellelectric.com\/es\/nmn-vs-dmd-how-to-choose-flexible-composite-insulation\/\">NMN vs DMD comparison<\/a>: what NHN actually is, how it sits above NMN and DMD, and how to pick the right grade without over- or under-buying.<\/p>\n<h2>What Flexible Composite Insulation Is \u2014 in One Line<\/h2>\n<p>A flexible composite bonds a thin dielectric film between two outer layers of non-woven or aramid paper. The film carries the dielectric strength; the outer layers add mechanical toughness, absorb impregnating varnish, and survive winding stress. The three-letter code describes the stack \u2014 and the stack, especially the core film, decides the temperature class. (For the DMD-vs-NMN basics, see the <a href=\"https:\/\/anwellelectric.com\/es\/nmn-vs-dmd-how-to-choose-flexible-composite-insulation\/\">NMN vs DMD guide<\/a>.)<\/p>\n<h2>DMD: The Class B\/F Baseline<\/h2>\n<p><strong>DMD = Dacron \u2013 Mylar \u2013 Dacron<\/strong> \u2014 two polyester non-woven layers around a polyester (PET) film core.<\/p>\n<ul>\n<li><strong>Clase t\u00e9rmica:<\/strong> Clase B (130 \u00b0C) hasta Clase F (155 \u00b0C) para las versiones de grado F.<\/li>\n<li><strong>Tensi\u00f3n de ruptura:<\/strong> ~8\u201315 kV\/mm<\/li>\n<li><strong>Costo:<\/strong> el m\u00e1s bajo de los tres<\/li>\n<li><strong>Ideal para:<\/strong> general-purpose motors, oil-immersed and dry-type transformer layer\/phase insulation, standard industrial equipment below 155\u00b0C<\/li>\n<\/ul>\n<p>DMD is the default when the application sits comfortably below 155\u00b0C and budget leads. It handles impregnation well and is widely stocked, which keeps lead times short. See the <a href=\"https:\/\/anwellelectric.com\/es\/producto\/dmd-dmd100\/\">DMD product page<\/a> for grades and thicknesses.<\/p>\n<h2>NMN: The Class F\/H Upgrade<\/h2>\n<p><strong>NMN = Nomex \u2013 Mylar \u2013 Nomex<\/strong> \u2014 aramid paper outer layers around the same PET film core.<\/p>\n<ul>\n<li><strong>Clase t\u00e9rmica:<\/strong> Clase F (155 \u00b0C) hasta Clase H (180 \u00b0C)<\/li>\n<li><strong>Tensi\u00f3n de ruptura:<\/strong> ~12\u201320 kV\/mm<\/li>\n<li><strong>Costo:<\/strong> moderado (t\u00edpicamente 20\u201330% por encima de DMD)<\/li>\n<li><strong>Ideal para:<\/strong> dry-type (cast-resin) transformers, traction and wind generators, higher-temperature motors, anywhere edge-tear and chemical resistance matter<\/li>\n<\/ul>\n<p>The aramid outer layers are what you pay for: superior thermal aging, better puncture and tear resistance, and stable performance under thermal cycling. When a design pushes toward or past 155\u00b0C, NMN is the natural step up from DMD. Full details on the <a href=\"https:\/\/anwellelectric.com\/es\/producto\/nmn-ama-ymy\/\">NMN product page<\/a>.<\/p>\n<h2>NHN: The Class H\/C Top Tier<\/h2>\n<p><strong>NHN = Nomex \u2013 polyimide \u2013 Nomex<\/strong> \u2014 aramid paper outer layers, but with a <strong>polyimide (PI) film core<\/strong> instead of PET.<\/p>\n<ul>\n<li><strong>Clase t\u00e9rmica:<\/strong> Class H (180\u00b0C) up to Class C (200\u2013220\u00b0C)<\/li>\n<li><strong>Tensi\u00f3n de ruptura:<\/strong> high, with excellent high-temperature retention<\/li>\n<li><strong>Costo:<\/strong> highest of the three<\/li>\n<li><strong>Ideal para:<\/strong> EV traction motors, wind and hydropower generators, aerospace, and any duty that runs hot or cycles hard<\/li>\n<\/ul>\n<p>The polyimide core is the whole point: it keeps its dielectric and mechanical properties far above where PET film would soften. NHN is the grade you reach for when NMN&#8217;s ceiling is not enough. See the <a href=\"https:\/\/anwellelectric.com\/es\/producto\/nhn\/\">P\u00e1gina de producto NHN<\/a>.<\/p>\n<h2>NHN vs NMN vs DMD: Side-by-Side<\/h2>\n<table>\n<thead>\n<tr>\n<th>Propiedad<\/th>\n<th>DMD<\/th>\n<th>NMN<\/th>\n<th>NHN<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Capas exteriores<\/td>\n<td>Polyester non-woven<\/td>\n<td>Nomex aramid<\/td>\n<td>Nomex aramid<\/td>\n<\/tr>\n<tr>\n<td>Pel\u00edcula principal<\/td>\n<td>Polyester (PET)<\/td>\n<td>Polyester (PET)<\/td>\n<td>Polyimide (PI)<\/td>\n<\/tr>\n<tr>\n<td>Clase t\u00e9rmica<\/td>\n<td>B (130\u00b0C) \u2013 F (155\u00b0C)<\/td>\n<td>F (155\u00b0C) \u2013 H (180\u00b0C)<\/td>\n<td>H (180\u00b0C) \u2013 C (200\u2013220\u00b0C)<\/td>\n<\/tr>\n<tr>\n<td>Voltaje de ruptura<\/td>\n<td>~8\u201315 kV\/mm<\/td>\n<td>~12\u201320 kV\/mm<\/td>\n<td>High, heat-stable<\/td>\n<\/tr>\n<tr>\n<td>Tear \/ puncture<\/td>\n<td>Bien<\/td>\n<td>Superior<\/td>\n<td>Superior<\/td>\n<\/tr>\n<tr>\n<td>Costo relativo<\/td>\n<td>Bajo<\/td>\n<td>Medio<\/td>\n<td>High<\/td>\n<\/tr>\n<tr>\n<td>Uso t\u00edpico<\/td>\n<td>Motores est\u00e1ndar, transformadores generales<\/td>\n<td>Transformadores de tipo seco, tracci\u00f3n, motores de alta temperatura<\/td>\n<td>EV traction, wind\/hydro, aerospace<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The takeaway: DMD, NMN, and NHN are rungs on one ladder, separated mainly by the core film and therefore by the temperature class.<\/p>\n<h2>C\u00f3mo elegir: Tres reglas<\/h2>\n<ol>\n<li><strong>Let the hottest spot set the class.<\/strong> Under ~155\u00b0C, DMD is usually enough. Cross 155\u00b0C and NMN becomes the safe spec. Past 180\u00b0C, or under hard thermal cycling, step to NHN.<\/li>\n<li><strong>Adapta la tarea a la situaci\u00f3n, no al cat\u00e1logo.<\/strong> A standard LV motor does not need NHN; an EV traction motor does not want to save on a composite that will age early. Specify to the real thermal and mechanical demand.<\/li>\n<li><strong>Watch thickness separately.<\/strong> All three come in 0.10\u20130.50 mm ranges. Slot-fill and creepage distance still have to be met \u2014 grade and thickness are separate decisions.<\/li>\n<\/ol>\n<h2>Errores comunes en las especificaciones<\/h2>\n<ul>\n<li><strong>Especificaci\u00f3n excesiva:<\/strong> putting NHN in a 120\u00b0C appliance motor just because it is &#8220;best.&#8221; You pay for temperature margin you never use.<\/li>\n<li><strong>Especificaci\u00f3n insuficiente:<\/strong> running DMD where the hotspot reaches 170\u00b0C. The composite ages early and you trade a small saving for field failures.<\/li>\n<li><strong>Confusing NMN and NHN:<\/strong> both are Nomex-faced, but only NHN has the PI core. If the datasheet does not state the core film, ask \u2014 the class depends on it.<\/li>\n<\/ul>\n<h2>Conclusi\u00f3n<\/h2>\n<p>DMD, NMN, and NHN are not competitors so much as a thermal ladder: DMD for standard Class B\/F duty at the best price, NMN for F\/H margins, NHN for H\/C and the hottest, hardest-cycling duty. Pick by operating temperature and real duty, and you get reliability without paying for unused headroom. Browse the full range in our <a href=\"https:\/\/anwellelectric.com\/es\/categoria-producto\/flexible-composite-insulation\/\">Categor\u00eda de aislamiento compuesto flexible<\/a>.<\/p>\n<p>\u00bfNecesita ayuda para especificar el material compuesto adecuado para su transformador o motor? <a href=\"https:\/\/anwellelectric.com\/es\/contact\/\">Contacta con nuestro equipo<\/a> En funci\u00f3n de la clase de temperatura y la aplicaci\u00f3n, adaptaremos el grado y el grosor a su construcci\u00f3n.<\/p>\n<hr\/>\n<p><strong>Lectura relacionada:<\/strong> <a href=\"https:\/\/anwellelectric.com\/es\/nmn-vs-dmd-how-to-choose-flexible-composite-insulation\/\">NMN vs DMD: C\u00f3mo elegir el aislamiento compuesto flexible adecuado<\/a><\/p>\n<p><strong>Explora todos los materiales compuestos flexibles:<\/strong> <a href=\"https:\/\/anwellelectric.com\/es\/categoria-producto\/flexible-composite-insulation\/\">Categor\u00eda de aislamiento compuesto flexible<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u00bfNHN, NMN o DMD? Compare la clase de temperatura, la estructura y el costo de los tres materiales compuestos flexibles para poder especificar el aislamiento de ranura y fase adecuado.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3081","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/anwellelectric.com\/es\/wp-json\/wp\/v2\/posts\/3081","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/anwellelectric.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/anwellelectric.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/anwellelectric.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/anwellelectric.com\/es\/wp-json\/wp\/v2\/comments?post=3081"}],"version-history":[{"count":1,"href":"https:\/\/anwellelectric.com\/es\/wp-json\/wp\/v2\/posts\/3081\/revisions"}],"predecessor-version":[{"id":3086,"href":"https:\/\/anwellelectric.com\/es\/wp-json\/wp\/v2\/posts\/3081\/revisions\/3086"}],"wp:attachment":[{"href":"https:\/\/anwellelectric.com\/es\/wp-json\/wp\/v2\/media?parent=3081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/anwellelectric.com\/es\/wp-json\/wp\/v2\/categories?post=3081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/anwellelectric.com\/es\/wp-json\/wp\/v2\/tags?post=3081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}