{"id":100260,"date":"2026-02-15T20:30:19","date_gmt":"2026-02-15T20:30:19","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100260"},"modified":"2026-03-03T15:43:31","modified_gmt":"2026-03-03T15:43:31","slug":"three-phase-motor-power","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/bn\/calculators\/three-phase-motor-power\/","title":{"rendered":"\u09a4\u09bf\u09a8 \u09ab\u09c7\u099c \u09ae\u09cb\u099f\u09b0 \u09aa\u09be\u0993\u09af\u09bc\u09be\u09b0 \u0995\u09cd\u09af\u09be\u09b2\u0995\u09c1\u09b2\u09c7\u099f\u09b0 | \u09ac\u09bf\u09a8\u09be\u09ae\u09c2\u09b2\u09cd\u09af\u09c7 \u0985\u09a8\u09b2\u09be\u0987\u09a8 \u09b8\u09b0\u099e\u09cd\u099c\u09be\u09ae"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Three-Phase Motor Power Calculator\",\"alternateName\":[\"3-Phase Power Calculator\",\"Motor Power Calculator\",\"AC Motor Current Calculator\"],\"description\":\"Free online calculator for three-phase motor power. P=\u221a3\u00d7V\u00d7I\u00d7cos\u03c6\u00d7\u03b7. Bidirectional \u2014 solve for power, voltage, current, PF, or efficiency.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/three-phase-motor-power\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any (Web Browser)\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"datePublished\":\"2024-01-01\",\"dateModified\":\"2025-06-01\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true,\"featureList\":[\"Bidirectional calculation\",\"Apparent and reactive power\",\"Power triangle\",\"Auto-calculation on input change\",\"Presets for common motors\",\"URL parameter sharing\"],\"keywords\":\"three-phase power, motor power, cos\u03c6, efficiency, kW, kVA, kVAR\"}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"What is the formula for three-phase motor power?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The active (real) power consumed by a three-phase motor is P = \u221a3 \u00d7 V_L \u00d7 I_L \u00d7 cos \u03c6 \u00d7 \u03b7, where V_L is line voltage, I_L is line current, cos \u03c6 is power factor, and \u03b7 is motor efficiency. Without \u03b7, the formula gives shaft input power.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the difference between kW, kVA, and kVAR?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"kW is active (real) power that does useful work. kVA is apparent power \u2014 the total power drawn from the supply. kVAR is reactive power used to maintain magnetic fields. They form the power triangle: S\u00b2 = P\u00b2 + Q\u00b2, where S is in kVA, P in kW, and Q in kVAR.\"}},\n{\"@type\":\"Question\",\"name\":\"What is a typical power factor for an electric motor?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Typical power factor for induction motors at full load is 0.80\u20130.90. At partial loads, PF drops significantly \u2014 a motor at 25% load may have PF as low as 0.40\u20130.55. Synchronous motors can operate at unity or even leading power factor.\"}},\n{\"@type\":\"Question\",\"name\":\"What is motor efficiency and how does it affect power calculation?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Motor efficiency \u03b7 is the ratio of mechanical output power to electrical input power. Typical values: 85\u201396% for standard motors, depending on size. IE3 premium efficiency motors typically exceed 92%. Always include \u03b7 when calculating electrical input from rated mechanical power.\"}},\n{\"@type\":\"Question\",\"name\":\"How do I find motor current from nameplate power?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Rearrange the formula: I = P \/ (\u221a3 \u00d7 V \u00d7 cos \u03c6 \u00d7 \u03b7). For example, a 15 kW motor at 400 V, PF 0.85, efficiency 0.91 draws I = 15000 \/ (\u221a3 \u00d7 400 \u00d7 0.85 \u00d7 0.91) \u2248 28.0 A.\"}}\n]}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[\n{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},\n{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},\n{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Three-Phase Motor Power\",\"item\":\"https:\/\/vibromera.eu\/calculators\/three-phase-motor-power\/\"}\n]}\n<\/script>\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n\n<link 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20px;font-size:13px;font-weight:700;color:#fff;background:var(--vc-accent);border-radius:var(--vc-radius);text-decoration:none;white-space:nowrap;transition:background 0.15s}\n.vc-promo-link:hover{background:var(--vc-accent-hover)}\n.vc-footer{text-align:center;padding:32px 16px;font-size:13px;color:var(--vc-ink-muted)}\n.vc-footer a{color:var(--vc-accent);text-decoration:none}\n.vc-footer a:hover{text-decoration:underline}\n.vc-footer-links{margin-top:8px;font-size:12px}\n.vc-footer-links a{margin:0 8px}\n@media print{.vc-section-body{max-height:none!important}.vc-faq-a{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-faq-chevron,.vc-presets,.vc-promo{display:none!important}}\n<\/style>\n\n<div class=\"vc-calculator\" id=\"vc-three-phase-motor-power\">\n\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool<\/p>\n    <h1 class=\"vc-header-title\">Three-Phase Motor Power Calculator<\/h1>\n    <p class=\"vc-header-subtitle\">Calculate active power P = \u221a3 \u00d7 V \u00d7 I \u00d7 cos \u03c6 \u00d7 \u03b7 for three-phase motors. Bidirectional \u2014 solve for any variable. Also shows apparent &amp; reactive power.<\/p>\n    <div class=\"vc-badges\">\n        <span class=\"vc-badge\">IEC 60034<\/span>\n        <span class=\"vc-badge\">Bidirectional<\/span>\n        <span class=\"vc-badge\">Power Triangle<\/span>\n    <\/div>\n<\/header>\n\n<div class=\"vc-card\">\n    <div class=\"vc-unit-bar\">\n        <button type=\"button\" class=\"vc-unit-btn vc-active\" data-system=\"metric\">Metric (kW, V, A)<\/button>\n        <button type=\"button\" class=\"vc-unit-btn\" data-system=\"imperial\">Imperial (HP, V, A)<\/button>\n    <\/div>\n\n    <form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\">\n        <div class=\"vc-form-grid\">\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-solve\">Solve For<\/label>\n                <select class=\"vc-select\" id=\"vc-solve\">\n                    <option value=\"P\">Active Power P<\/option>\n                    <option value=\"I\">Current I<\/option>\n                    <option value=\"V\">Voltage V<\/option>\n                    <option value=\"PF\">Power Factor cos \u03c6<\/option>\n                    <option value=\"EFF\">Efficiency \u03b7<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-voltage\">Line Voltage <span class=\"vc-label-hint\">(V)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-voltage\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 400\" value=\"400\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-current\">Line Current <span class=\"vc-label-hint\">(A)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-current\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 28\" value=\"28\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-pf\">Power Factor cos \u03c6 <span class=\"vc-label-hint\">(0\u20131)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-pf\" inputmode=\"decimal\" step=\"0.01\" min=\"0\" max=\"1\" placeholder=\"e.g. 0.85\" value=\"0.85\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-eff\">Efficiency \u03b7 <span class=\"vc-label-hint\">(0\u20131)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-eff\" inputmode=\"decimal\" step=\"0.01\" min=\"0\" max=\"1\" placeholder=\"e.g. 0.91\" value=\"0.91\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-power\">Active Power <span class=\"vc-label-hint\" id=\"vc-power-unit\">(kW)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-power\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 15\" value=\"15\">\n            <\/div>\n        <\/div>\n\n        <div class=\"vc-presets\">\n            <div class=\"vc-presets-label\">Quick presets<\/div>\n            <button type=\"button\" class=\"vc-preset-btn\" data-v=\"400\" data-p=\"7.5\" data-pf=\"0.84\" data-eff=\"0.89\">7.5 kW \/ 400 V<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-v=\"400\" data-p=\"15\" data-pf=\"0.85\" data-eff=\"0.91\">15 kW \/ 400 V<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-v=\"400\" data-p=\"37\" data-pf=\"0.86\" data-eff=\"0.93\">37 kW \/ 400 V<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-v=\"690\" data-p=\"75\" data-pf=\"0.87\" data-eff=\"0.95\">75 kW \/ 690 V<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-v=\"480\" data-p=\"50\" data-pf=\"0.86\" data-eff=\"0.94\">50 kW \/ 480 V<\/button>\n        <\/div>\n    <\/form>\n\n    <div class=\"vc-results\" id=\"vc-results\">\n        <div class=\"vc-results-head\">\n            <h2 class=\"vc-results-title\">Results<\/h2>\n            <button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\">\n                <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg>\n                Copy\n            <\/button>\n        <\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard vc-rcard-primary\">\n                <div class=\"vc-rcard-label\">Active Power P<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-power\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Apparent Power S<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-apparent\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Reactive Power Q<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-reactive\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Line Current I<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-current\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Power Factor \/ Efficiency<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-pfeff\">\u2014<\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- Theory -->\n<div class=\"vc-section vc-open\" id=\"vc-sec-theory\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\">\n        <span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Theory &amp; Formulas<\/span><\/span>\n        <svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg>\n    <\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner vc-theory\">\n            <h3>Three-Phase Power Formula<\/h3>\n            <p>The active (real) power consumed or delivered by a three-phase AC circuit is:<\/p>\n            <div class=\"vc-formula-box\" id=\"vc-katex-1\"><\/div>\n            <ul>\n                <li><strong>P<\/strong> \u2014 active power (W or kW)<\/li>\n                <li><strong>V<sub>L<\/sub><\/strong> \u2014 line-to-line voltage (V)<\/li>\n                <li><strong>I<sub>L<\/sub><\/strong> \u2014 line current (A)<\/li>\n                <li><strong>cos \u03c6<\/strong> \u2014 power factor (0\u20131)<\/li>\n                <li><strong>\u03b7<\/strong> \u2014 motor efficiency (0\u20131)<\/li>\n            <\/ul>\n            <h3>Power Triangle<\/h3>\n            <div class=\"vc-formula-box\" id=\"vc-katex-2\"><\/div>\n            <p>Where <strong>S<\/strong> is apparent power (kVA), <strong>P<\/strong> is active power (kW), and <strong>Q<\/strong> is reactive power (kVAR).<\/p>\n\n            <h3>Practical Example<\/h3>\n            <div class=\"vc-example-box\">\n                <div class=\"vc-example-title\">Example \u2014 15 kW Motor at 400 V<\/div>\n                <p><strong>Given:<\/strong> P = 15 kW, V = 400 V, cos \u03c6 = 0.85, \u03b7 = 0.91<\/p>\n                <p>I = P \/ (\u221a3 \u00d7 V \u00d7 cos \u03c6 \u00d7 \u03b7) = 15000 \/ (1.732 \u00d7 400 \u00d7 0.85 \u00d7 0.91) = <strong>28.0 A<\/strong><\/p>\n                <p>S = \u221a3 \u00d7 V \u00d7 I = 1.732 \u00d7 400 \u00d7 28.0 = <strong>19.40 kVA<\/strong><\/p>\n                <p>Q = \u221a(S\u00b2 \u2212 P\u00b2) = \u221a(19.40\u00b2 \u2212 15\u00b2) = <strong>12.30 kVAR<\/strong><\/p>\n            <\/div>\n\n            <div class=\"vc-info-box\">\n                <p><strong>\ud83d\udca1 Tip:<\/strong> When calculating electrical input power from a motor&#8217;s rated mechanical output, always divide by efficiency \u03b7. The nameplate kW is typically the shaft (mechanical) output.<\/p>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- Related -->\n<div class=\"vc-section\" id=\"vc-sec-related\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\">\n        <span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udd17<\/span><span class=\"vc-section-title\">Related Calculators<\/span><\/span>\n        <svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg>\n    <\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner\">\n            <div class=\"vc-related\">\n                <a class=\"vc-related-link\" href=\"\/calculators\/motor-starting-current\/\">Motor Starting Current<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/motor-nameplate-current\/\">Motor Nameplate Current<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/power-factor-correction\/\">Power Factor Correction<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/voltage-drop-calculator\/\">Voltage Drop<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/motor-torque-from-current\/\">Motor Torque from Current<\/a>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- FAQ -->\n<div class=\"vc-section\" id=\"vc-sec-faq\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\">\n        <span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\u2753<\/span><span class=\"vc-section-title\">Frequently Asked Questions<\/span><\/span>\n        <svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg>\n    <\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner\">\n            <div class=\"vc-faq-list\" id=\"vc-faq-list\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-promo\">\n    <div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Professional field balancing instruments and software. 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Last updated: June 2025<\/p>\n    <div class=\"vc-footer-links\"><a href=\"\/calculators\/engineering-calculators\/\">All Calculators<\/a><a href=\"https:\/\/vibromera.eu\/contacts\/\">Contact<\/a><\/div>\n<\/footer>\n\n<\/div>\n\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.11\/dist\/katex.min.js\"><\/script>\n<script>\n(function(){\n    'use strict';\n    var SLUG='three-phase-motor-power';\n    var unitSystem='metric';\n    var HP=0.7457;\n\n    function $(id){return document.getElementById(id)}\n    function fmt(n,d){if(isNaN(n)||!isFinite(n))return'\u2014';var f=n.toFixed(d===undefined?2:d);return f.replace(\/(.d*?)0+$\/,'$1').replace(\/.$\/,'')}\n\n    function calculate(){\n        var solve=$('vc-solve').value;\n        var V=parseFloat($('vc-voltage').value);\n        var I=parseFloat($('vc-current').value);\n        var pf=parseFloat($('vc-pf').value);\n        var eff=parseFloat($('vc-eff').value);\n        var P=parseFloat($('vc-power').value);\n\n        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$('vc-form').addEventListener('change',calculate);\n\n    $('vc-copy-btn').addEventListener('click',function(){\n        var text='Three-Phase Motor Powern\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501n'+\n            'Power: '+$('vc-r-power').textContent+'n'+\n            'Apparent: '+$('vc-r-apparent').textContent+'n'+\n            'Reactive: '+$('vc-r-reactive').textContent+'n'+\n            'Current: '+$('vc-r-current').textContent+'n'+\n            $('vc-r-pfeff').textContent+'n'+\n            '\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501nvibromera.eu\/calculators\/three-phase-motor-power\/';\n        if(navigator.clipboard){navigator.clipboard.writeText(text).then(function(){\n            var b=$('vc-copy-btn');b.classList.add('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" 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V<sub>L<\/sub> is line voltage, I<sub>L<\/sub> is line current, cos \u03c6 is power factor, and \u03b7 is motor efficiency.<\/p><p>Without \u03b7, the formula gives the total electrical input power. With \u03b7, it gives the shaft (mechanical) output power.<\/p>'},\n        {q:'What is the difference between kW, kVA, and kVAR?',a:'<p><strong>kW<\/strong> (kilowatt) is active power that does useful work. <strong>kVA<\/strong> is apparent power \u2014 the total power drawn from the supply. <strong>kVAR<\/strong> is reactive power used to maintain magnetic fields in motors and transformers.<\/p><p>They form the power triangle: S\u00b2 = P\u00b2 + Q\u00b2.<\/p>'},\n        {q:'What is a typical power factor for an electric motor?',a:'<p>Typical power factors at full load:<\/p><ul><li><strong>0.80\u20130.90<\/strong> \u2014 Standard induction motors<\/li><li><strong>0.40\u20130.55<\/strong> \u2014 Motors at 25% partial load<\/li><li><strong>0.95\u20131.00<\/strong> \u2014 Synchronous motors or PFC-corrected<\/li><\/ul><p>Power factor drops significantly at partial loads.<\/p>'},\n        {q:'What is motor efficiency and how does it affect the calculation?',a:'<p>Efficiency \u03b7 = P<sub>output<\/sub> \/ P<sub>input<\/sub>. Typical ranges: 85\u201396% depending on motor size and class (IE1 to IE4). A 15 kW IE3 motor may have \u03b7 \u2248 0.915.<\/p><p>Always include \u03b7 when computing electrical input from mechanical output power.<\/p>'},\n        {q:'How do I convert between HP and kW?',a:'<p>1 HP (mechanical) = 0.7457 kW, or 1 kW \u2248 1.341 HP.<\/p><p>Motor nameplate HP is mechanical shaft output. To get electrical input: P<sub>elec<\/sub> = HP \u00d7 0.7457 \/ \u03b7.<\/p>'}\n    ];\n    var fl=$('vc-faq-list');\n    faqData.forEach(function(f){fl.innerHTML+='<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>'+f.q+'<\/span><svg class=\"vc-faq-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-faq-a\"><div class=\"vc-faq-a-inner\">'+f.a+'<\/div><\/div><\/div>'});\n    fl.addEventListener('click',function(e){var b=e.target.closest('.vc-faq-q');if(b)b.closest('.vc-faq-item').classList.toggle('vc-open')});\n\n    function saveHistory(entry){var key='vc_history_'+SLUG;var arr=[];try{arr=JSON.parse(localStorage.getItem(key))||[]}catch(e){}entry._ts=new Date().toISOString();arr.unshift(entry);if(arr.length>10)arr=arr.slice(0,10);try{localStorage.setItem(key,JSON.stringify(arr))}catch(e){}}\n\n    function loadParams(){var p=new URLSearchParams(window.location.search);p.forEach(function(v,k){var el=$(k)||$('vc-'+k);if(el)el.value=v})}\n\n    function renderFormulas(){\n        try{\n            katex.render('P = \\sqrt{3} \\times V_L \\times I_L \\times \\cos\\varphi \\times \\eta \\quad [\\text{W}]',$('vc-katex-1'),{displayMode:true,throwOnError:false});\n            katex.render('S^2 = P^2 + Q^2 \\quad;\\quad S = \\sqrt{3} \\, V_L \\, I_L \\quad [\\text{VA}]',$('vc-katex-2'),{displayMode:true,throwOnError:false});\n        }catch(e){}\n    }\n\n    function init(){\n        try{var s=localStorage.getItem('vc_units');if(s==='imperial'){unitSystem='imperial';unitBtns.forEach(function(b){b.classList.toggle('vc-active',b.getAttribute('data-system')==='imperial')});$('vc-power-unit').textContent='(HP)'}}catch(e){}\n        loadParams();renderFormulas();calculate();\n    }\n    if(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',init)}else{init()}\n})();\n<\/script>\n\n\n<p>A reliable **three phase motor power calculator** is an essential tool for electrical engineers and technicians who need to quickly determine active, apparent, and reactive power values without performing manual computations. By inputting known parameters such as line voltage, line current, power factor, and efficiency, this three phase motor power calculator applies the standard formula P = \u221a3 \u00d7 V \u00d7 I \u00d7 cos \u03c6 \u00d7 \u03b7 to deliver accurate results in seconds. Its bidirectional functionality allows you to solve for any unknown variable, making it invaluable for motor sizing, load analysis, and energy auditing tasks.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u09ac\u09bf\u09a8\u09be\u09ae\u09c2\u09b2\u09cd\u09af\u09c7 \u0985\u09a8\u09b2\u09be\u0987\u09a8 \u09a4\u09bf\u09a8-\u09aa\u09b0\u09cd\u09af\u09be\u09af\u09bc \u09ae\u09cb\u099f\u09b0 \u09aa\u09be\u0993\u09af\u09bc\u09be\u09b0 \u0995\u09cd\u09af\u09be\u09b2\u0995\u09c1\u09b2\u09c7\u099f\u09b0\u0964 \u09b6\u0995\u09cd\u09a4\u09bf P=\u221a3\u00d7V\u00d7I\u00d7cos\u03c6\u00d7\u03b7, \u0986\u09aa\u09be\u09a4 \u09b6\u0995\u09cd\u09a4\u09bf, \u09aa\u09cd\u09b0\u09a4\u09bf\u0995\u09cd\u09b0\u09bf\u09af\u09bc\u09be\u09b6\u09c0\u09b2 \u09b6\u0995\u09cd\u09a4\u09bf \u0997\u09a3\u09a8\u09be \u0995\u09b0\u09c1\u09a8\u0964 \u09a6\u09cd\u09ac\u09bf\u09ae\u09c1\u0996\u09c0 \u2014 \u09af\u09c7\u0995\u09cb\u09a8\u09cb \u09aa\u09b0\u09bf\u09ac\u09b0\u09cd\u09a4\u09a8\u09b6\u09c0\u09b2\u09a4\u09be\u09b0 \u099c\u09a8\u09cd\u09af \u09b8\u09ae\u09be\u09a7\u09be\u09a8 \u0995\u09b0\u09c1\u09a8\u0964<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100260","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100260","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":4,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100260\/revisions"}],"predecessor-version":[{"id":100707,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100260\/revisions\/100707"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/media?parent=100260"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/categories?post=100260"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/tags?post=100260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}