{"id":7586,"date":"2026-07-30T10:55:43","date_gmt":"2026-07-30T02:55:43","guid":{"rendered":"https:\/\/hobertek.com\/how-to-size-a-solar-pump-inverter-the-engineering-guide-to-ac-pump-solarization-2026\/"},"modified":"2026-07-30T10:55:43","modified_gmt":"2026-07-30T02:55:43","slug":"how-to-size-a-solar-pump-inverter-the-engineering-guide-to-ac-pump-solarization-2026","status":"publish","type":"post","link":"https:\/\/hobertek.com\/es\/how-to-size-a-solar-pump-inverter-the-engineering-guide-to-ac-pump-solarization-2026\/","title":{"rendered":"C\u00f3mo dimensionar un inversor para bomba solar: Gu\u00eda de ingenier\u00eda para la solarizaci\u00f3n de bombas de CA (2026)"},"content":{"rendered":"<p><strong>To correctly size a solar pump inverter for an existing AC pump, you must match the inverter\u2019s Rated Output Current to the motor\u2019s Full Load Amps (FLA), typically applying a 1.15x safety margin. Sizing by kW alone is a common field error that leads to premature IGBT failure. Additionally, the PV array configuration must ensure the Vmp stays within the inverter&#8217;s MPPT window while the Voc never exceeds the maximum DC input voltage at the site\u2019s lowest temperature.<\/strong><\/p>\n<h2>Step 1: The &#8220;Current Over Power&#8221; Rule<\/h2>\n<p>En la pr\u00e1ctica, a menudo vemos instaladores que combinan un inversor de 7,5 kW con una bomba de 7,5 kW y se preguntan por qu\u00e9 se dispara por sobrecorriente.<\/p>\n<p><strong>La verdad:<\/strong> Power ratings are nominal. The real work is done by current. If your pump&#8217;s FLA (Full Load Amps) is 15A, your inverter must be able to deliver that current continuously under solar fluctuations.<\/p>\n<ul>\n<li><strong>La f\u00f3rmula:<\/strong> Corriente de salida del inversor (A) \u2265 Corriente nominal del motor (A) \u00d7 1,15<\/li>\n<li><strong>\u00bfPor qu\u00e9?<\/strong> Solar inputs are variable. High-inertia starts or slight mechanical wear on the pump can cause current spikes. If your inverter doesn&#8217;t have the &#8220;headroom,&#8221; it will trigger protection or burn out.<\/li>\n<\/ul>\n<h2>Paso 2: Ventanas de voltaje del conjunto fotovoltaico (Voc vs. Vmp)<\/h2>\n<p>Un inversor para bomba solar no es un cargador de bater\u00edas; es un controlador MPPT de alta velocidad. Su eficiencia depende completamente de la coincidencia de voltaje.<\/p>\n<ul>\n<li><strong>Vmp (Voltaje a m\u00e1xima potencia):<\/strong> Your string\u2019s combined Vmp must be at the center of the inverter&#8217;s MPPT range (e.g., 530V-580V for a 380V AC system) to ensure 100% pump frequency even during passing clouds.<\/li>\n<li><strong>Voc (tensi\u00f3n en circuito abierto):<\/strong> <strong>Nunca<\/strong> design your string to hit more than 90% of the inverter&#8217;s max DC input. If the inverter max is 800V, keep your Voc below 720V. Cold mornings in regions like the Middle East or Andes can spike Voc by 10-15%, instantly frying the input capacitors.<\/li>\n<\/ul>\n<h2>Step 3: The Site-Specific &#8220;Correction Factors&#8221;<\/h2>\n<p>Standard data sheets assume 25&deg;C and sea level. Real-world engineering doesn&#8217;t. HOBER inverters are built for extreme environments, but physics still applies.<\/p>\n<ol>\n<li><strong>Altitud elevada (&gt;3000 m):<\/strong> El aire enrarecido significa una mala disipaci\u00f3n del calor. En ciudades como La Paz o en zonas de gran altitud del Per\u00fa, debes <strong>Sobredimensiona el inversor en una potencia nominal.<\/strong> (por ejemplo, usar un inversor de 11 kW para una bomba de 7,5 kW) para compensar la reducci\u00f3n de potencia.<\/li>\n<li><strong>Calor extremo (50 \u00b0C o m\u00e1s):<\/strong> Si su sitio alcanza los 50 \u00b0C (Pakist\u00e1n, Sud\u00e1n), las unidades refrigeradas por ventilador fallar\u00e1n. Necesita una <strong>Arquitectura de triple refrigeraci\u00f3n<\/strong> (Protecci\u00f3n IP65 sellada + disipadores de calor externos + ventilaci\u00f3n forzada) para mantener una salida de 50 Hz.<\/li>\n<\/ol>\n<h3>Tabla de referencia de tallas r\u00e1pidas (est\u00e1ndar B2B)<\/h3>\n<table style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"padding: 12px; border: 1px solid #ddd;\">Potencia de la bomba<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd;\">Fase del motor<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd;\">Inversor recomendado<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd;\">Potencia fotovoltaica m\u00ednima<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>2,2 kW \/ 3 CV<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">Trif\u00e1sico 220 V<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">2.2kW &#8211; 3.7kW<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">3,3 kWp<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>7,5 kW \/ 10 CV<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">Trif\u00e1sico 380 V<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">7.5kW &#8211; 11kW<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">11,2 kWp<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>15 kW \/ 20 CV<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">Trif\u00e1sico 380 V<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">15kW &#8211; 18.5kW<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">22,5 kWp<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Paso 4: El peligro del cable largo<\/h2>\n<p>If your borehole is deeper than 100m, the voltage drop and reflected wave phenomenon will destroy your motor&#8217;s insulation.<\/p>\n<ul>\n<li><strong>Regla de ingenier\u00eda:<\/strong>\n<ul>\n<li><strong>100m &#8211; 200m:<\/strong> Instale un reactor de salida.<\/li>\n<li><strong>&gt;200 m:<\/strong> Instale un filtro de onda sinusoidal.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Los inversores HOBER IP65 est\u00e1n dise\u00f1ados para manejar estas cargas inductivas, pero la protecci\u00f3n es indispensable para la durabilidad del sistema.<\/p>\n<hr \/>\n<h2>\u00bfBusca un servicio profesional de selecci\u00f3n de sistemas?<\/h2>\n<p>La l\u00f3gica anterior sirve para el dimensionamiento preliminar. Para obtener la lista completa de materiales (BOM), las configuraciones de las cadenas y los precios exclusivos para distribuidores para su proyecto espec\u00edfico, visite nuestra Academia.<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/hobertek.com\/es\/ac-pump-solarization-academy\/\" class=\"button\">Visite la Academia de Solarizaci\u00f3n de Bombas de CA<\/a><\/p>\n<hr \/>\n<h3>Preguntas frecuentes sobre el dimensionamiento de inversores para bombas solares<\/h3>\n<div class=\"faq-section\">\n<p><strong>P: \u00bfPuedo usar un inversor monof\u00e1sico para una bomba trif\u00e1sica?<\/strong><br \/>R: No. La fase y el voltaje de salida del inversor deben coincidir con los de la placa de caracter\u00edsticas del motor. El uso de inversores h\u00edbridos HOBER permite convertir la entrada fotovoltaica monof\u00e1sica en una salida trif\u00e1sica para bombas est\u00e1ndar.<\/p>\n<p><strong>P: \u00bfC\u00f3mo manejo cargas de m\u00e1s de 500 CV?<\/strong><br \/>A: Para sistemas de riego a gran escala (huertos de c\u00edtricos, etc.), utilizamos armarios de control industriales con capacidad de entrada de 1130 A o superior y sincronizaci\u00f3n multivariable. P\u00f3ngase en contacto con nuestro equipo de ingenier\u00eda para obtener paquetes t\u00e9cnicos de alta potencia.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Para dimensionar correctamente un inversor para bomba solar para una bomba de CA existente, debe hacer coincidir la corriente de salida nominal del inversor con los amperios de carga completa del motor.<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>","protected":false},"author":4,"featured_media":7513,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","om_disable_all_campaigns":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"_joinchat":[],"footnotes":"","jetpack_post_was_ever_published":false},"categories":[76,212],"tags":[266,281,168],"class_list":["post-7586","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solar-pump-inverter","category-solutions","tag-ac-pump-solarization","tag-hybrid-pumping","tag-sizing"],"jetpack_featured_media_url":"https:\/\/hobertek.com\/wp-content\/uploads\/2026\/07\/Hober-Solar-Pump-Inverter-IP65-Cooling-Test-in-Saudi-Arabia.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/hobertek.com\/es\/wp-json\/wp\/v2\/posts\/7586","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hobertek.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hobertek.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hobertek.com\/es\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/hobertek.com\/es\/wp-json\/wp\/v2\/comments?post=7586"}],"version-history":[{"count":0,"href":"https:\/\/hobertek.com\/es\/wp-json\/wp\/v2\/posts\/7586\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hobertek.com\/es\/wp-json\/wp\/v2\/media\/7513"}],"wp:attachment":[{"href":"https:\/\/hobertek.com\/es\/wp-json\/wp\/v2\/media?parent=7586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hobertek.com\/es\/wp-json\/wp\/v2\/categories?post=7586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hobertek.com\/es\/wp-json\/wp\/v2\/tags?post=7586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}