{"id":100159,"date":"2026-02-15T20:21:38","date_gmt":"2026-02-15T20:21:38","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100159"},"modified":"2026-02-15T20:21:38","modified_gmt":"2026-02-15T20:21:38","slug":"motor-nameplate-decoder","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/kn\/calculators\/motor-nameplate-decoder\/","title":{"rendered":"Motor Nameplate Decoder | IEC 60034-1 | Read Any Motor Plate"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Motor Nameplate Decoder\",\"description\":\"Decode any electric motor nameplate per IEC 60034-1. 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16px;font-size:13px;color:var(--vc-ink-muted)}\n.vc-footer a{color:var(--vc-accent);text-decoration:none}.vc-footer a:hover{text-decoration:underline}\n.vc-footer-links{margin-top:8px;font-size:12px}.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-promo,.vc-presets{display:none!important}}\n<\/style>\n\n<div class=\"vc-calculator\" id=\"vc-motor-nameplate\">\n\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool<\/p>\n    <h1 class=\"vc-header-title\">Motor Nameplate Decoder<\/h1>\n    <p class=\"vc-header-subtitle\">Enter motor nameplate data and decode every field. Calculate synchronous speed, slip, efficiency, torque, and understand insulation class, IP rating, duty cycle, and frame size meanings.<\/p>\n    <div class=\"vc-badges\">\n        <span class=\"vc-badge\">IEC 60034-1<\/span>\n        <span class=\"vc-badge\">IE1 \u2013 IE5<\/span>\n        <span class=\"vc-badge\">S1 \u2013 S10<\/span>\n    <\/div>\n<\/header>\n\n<div class=\"vc-card\">\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-power\">Rated Power <span class=\"vc-label-hint\">(kW)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-power\" inputmode=\"decimal\" step=\"any\" min=\"0.01\" placeholder=\"e.g. 11\" value=\"11\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-voltage\">Voltage <span class=\"vc-label-hint\">(V)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-voltage\" inputmode=\"decimal\" step=\"any\" min=\"1\" placeholder=\"e.g. 400\" value=\"400\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-current\">Rated Current <span class=\"vc-label-hint\">(A)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-current\" inputmode=\"decimal\" step=\"any\" min=\"0.01\" placeholder=\"e.g. 22\" value=\"22\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-freq\">Frequency <span class=\"vc-label-hint\">(Hz)<\/span><\/label>\n                <select class=\"vc-select\" id=\"vc-freq\">\n                    <option value=\"50\" selected>50 Hz<\/option>\n                    <option value=\"60\">60 Hz<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-poles\">Number of Poles<\/label>\n                <select class=\"vc-select\" id=\"vc-poles\">\n                    <option value=\"2\">2 poles<\/option>\n                    <option value=\"4\" selected>4 poles<\/option>\n                    <option value=\"6\">6 poles<\/option>\n                    <option value=\"8\">8 poles<\/option>\n                    <option value=\"10\">10 poles<\/option>\n                    <option value=\"12\">12 poles<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-rpm\">Rated RPM <span class=\"vc-label-hint\">(nameplate)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-rpm\" inputmode=\"decimal\" step=\"any\" min=\"1\" placeholder=\"e.g. 1460\" value=\"1460\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-cosphi\">cos \u03c6 (Power Factor)<\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-cosphi\" inputmode=\"decimal\" step=\"0.01\" min=\"0.1\" max=\"1\" placeholder=\"e.g. 0.85\" value=\"0.85\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-ie\">IE Efficiency Class<\/label>\n                <select class=\"vc-select\" id=\"vc-ie\">\n                    <option value=\"IE1\">IE1 \u2014 Standard<\/option>\n                    <option value=\"IE2\">IE2 \u2014 High<\/option>\n                    <option value=\"IE3\" selected>IE3 \u2014 Premium<\/option>\n                    <option value=\"IE4\">IE4 \u2014 Super Premium<\/option>\n                    <option value=\"IE5\">IE5 \u2014 Ultra Premium<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-insulation\">Insulation Class<\/label>\n                <select class=\"vc-select\" id=\"vc-insulation\">\n                    <option value=\"A\">Class A (105\u00b0C)<\/option>\n                    <option value=\"E\">Class E (120\u00b0C)<\/option>\n                    <option value=\"B\">Class B (130\u00b0C)<\/option>\n                    <option value=\"F\" selected>Class F (155\u00b0C)<\/option>\n                    <option value=\"H\">Class H (180\u00b0C)<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-ip\">IP Rating<\/label>\n                <select class=\"vc-select\" id=\"vc-ip\">\n                    <option value=\"IP23\">IP23<\/option>\n                    <option value=\"IP44\">IP44<\/option>\n                    <option value=\"IP54\">IP54<\/option>\n                    <option value=\"IP55\" selected>IP55<\/option>\n                    <option value=\"IP56\">IP56<\/option>\n                    <option value=\"IP65\">IP65<\/option>\n                    <option value=\"IP66\">IP66<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-duty\">Duty Cycle<\/label>\n                <select class=\"vc-select\" id=\"vc-duty\">\n                    <option value=\"S1\" selected>S1 \u2014 Continuous<\/option>\n                    <option value=\"S2\">S2 \u2014 Short-time<\/option>\n                    <option value=\"S3\">S3 \u2014 Intermittent periodic<\/option>\n                    <option value=\"S4\">S4 \u2014 Intermittent periodic w\/ starting<\/option>\n                    <option value=\"S5\">S5 \u2014 Intermittent periodic w\/ braking<\/option>\n                    <option value=\"S6\">S6 \u2014 Continuous w\/ intermittent load<\/option>\n                    <option value=\"S7\">S7 \u2014 Continuous w\/ starting &#038; braking<\/option>\n                    <option value=\"S8\">S8 \u2014 Continuous w\/ speed changes<\/option>\n                    <option value=\"S9\">S9 \u2014 Non-periodic load\/speed variations<\/option>\n                    <option value=\"S10\">S10 \u2014 Discrete constant loads<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-frame\">Frame Size <span class=\"vc-label-hint\">(e.g. 160M)<\/span><\/label>\n                <input class=\"vc-input\" type=\"text\" id=\"vc-frame\" placeholder=\"e.g. 160M\" value=\"160M\">\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-p=\"5.5\" data-v=\"400\" data-i=\"11.5\" data-f=\"50\" data-poles=\"4\" data-rpm=\"1445\" data-cos=\"0.83\" data-frame=\"132S\">5.5 kW \/ 4p \/ 50 Hz<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-p=\"22\" data-v=\"400\" data-i=\"42\" data-f=\"50\" data-poles=\"2\" data-rpm=\"2940\" data-cos=\"0.88\" data-frame=\"180M\">22 kW \/ 2p \/ 50 Hz<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-p=\"75\" data-v=\"400\" data-i=\"140\" data-f=\"50\" data-poles=\"4\" data-rpm=\"1480\" data-cos=\"0.86\" data-frame=\"280S\">75 kW \/ 4p \/ 50 Hz<\/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\">Decoded Nameplate<\/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> 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\">Rated Torque<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-torque\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Synchronous Speed<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-sync\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Slip<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-slip\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Efficiency (est.)<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-eff\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Apparent Power<\/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<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-reactive\">\u2014<\/div>\n            <\/div>\n        <\/div>\n\n        <div class=\"vc-decode-section\">\n            <div class=\"vc-decode-title\">Nameplate Field Meanings<\/div>\n            <div id=\"vc-decode-list\"><\/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; Reference<\/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>Synchronous Speed<\/h3>\n            <p>n<sub>s<\/sub> = 120 \u00d7 f \/ p, where f is frequency (Hz) and p is number of poles.<\/p>\n            <h3>Slip<\/h3>\n            <p>s = (n<sub>s<\/sub> \u2212 n) \/ n<sub>s<\/sub> \u00d7 100%, where n is rated RPM. Typical slip: 2\u20135% for standard motors.<\/p>\n            <h3>Torque<\/h3>\n            <p>T = P \u00d7 9550 \/ n (Nm), where P is power in kW and n is RPM.<\/p>\n            <h3>Efficiency<\/h3>\n            <p>\u03b7 = P<sub>out<\/sub> \/ P<sub>in<\/sub> = P \/ (\u221a3 \u00d7 V \u00d7 I \u00d7 cos \u03c6). Can be estimated from nameplate data.<\/p>\n\n            <h3>Insulation Classes<\/h3>\n            <table class=\"vc-table\">\n                <thead><tr><th>Class<\/th><th>Max Winding Temp<\/th><th>Ambient + Rise + Hotspot<\/th><\/tr><\/thead>\n                <tbody>\n                    <tr><td>A<\/td><td>105\u00b0C<\/td><td>40 + 60 + 5\u00b0C<\/td><\/tr>\n                    <tr><td>E<\/td><td>120\u00b0C<\/td><td>40 + 75 + 5\u00b0C<\/td><\/tr>\n                    <tr><td>B<\/td><td>130\u00b0C<\/td><td>40 + 80 + 10\u00b0C<\/td><\/tr>\n                    <tr><td>F<\/td><td>155\u00b0C<\/td><td>40 + 105 + 10\u00b0C<\/td><\/tr>\n                    <tr><td>H<\/td><td>180\u00b0C<\/td><td>40 + 125 + 15\u00b0C<\/td><\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>IE Efficiency Classes (IEC 60034-30-1)<\/h3>\n            <table class=\"vc-table\">\n                <thead><tr><th>Class<\/th><th>Level<\/th><th>Typical \u03b7 (11 kW, 4p)<\/th><\/tr><\/thead>\n                <tbody>\n                    <tr><td>IE1<\/td><td>Standard<\/td><td>~87.6%<\/td><\/tr>\n                    <tr><td>IE2<\/td><td>High<\/td><td>~89.4%<\/td><\/tr>\n                    <tr><td>IE3<\/td><td>Premium<\/td><td>~91.4%<\/td><\/tr>\n                    <tr><td>IE4<\/td><td>Super Premium<\/td><td>~92.6%<\/td><\/tr>\n                    <tr><td>IE5<\/td><td>Ultra Premium<\/td><td>~93.9%<\/td><\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>IP Rating Explanation<\/h3>\n            <p>IP stands for Ingress Protection. First digit = solids protection (0\u20136), second digit = water protection (0\u20139).<\/p>\n            <ul>\n                <li><strong>IP55<\/strong> \u2014 Dust-protected, protected against water jets from any direction<\/li>\n                <li><strong>IP65<\/strong> \u2014 Dust-tight, protected against water jets<\/li>\n                <li><strong>IP66<\/strong> \u2014 Dust-tight, protected against powerful water jets<\/li>\n            <\/ul>\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-sizing-calculator\/\">Motor Sizing Calculator<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/star-delta-starter-calculator\/\">Star-Delta Starter Calculator<\/a>\n                <a class=\"vc-related-link\" href=\"\/calculators\/rpm-to-rads-converter\/\">RPM to rad\/s Converter<\/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\"><div class=\"vc-faq-list\" id=\"vc-faq-list\"><\/div><\/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>Balance motors in the field and diagnose electrical\/mechanical faults with professional instruments.<\/div>\n    <a class=\"vc-promo-link\" href=\"https:\/\/vibromera.eu\/\" target=\"_blank\" rel=\"noopener\">Learn More<\/a>\n<\/div>\n<footer class=\"vc-footer\">\n    <p>&copy; 2024\u20132025 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a> \u2014 Engineering Calculators<\/p>\n    <p style=\"font-size:12px;margin-top:4px;\">Motor Nameplate Decoder per IEC 60034-1. Last updated: February 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>\n(function(){\n    'use strict';\n    var SLUG='motor-nameplate-decoder';\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    var INS_DATA={A:{temp:105,rise:60},E:{temp:120,rise:75},B:{temp:130,rise:80},F:{temp:155,rise:105},H:{temp:180,rise:125}};\n    var DUTY_DESC={S1:'Continuous duty \u2014 constant load for unlimited time',S2:'Short-time duty \u2014 constant load for a specified time, then rest',S3:'Intermittent periodic duty \u2014 sequence of identical duty cycles (load + rest)',S4:'Intermittent periodic with starting \u2014 includes starting transient',S5:'Intermittent periodic with electric braking',S6:'Continuous operation with intermittent load',S7:'Continuous with electric braking and starting',S8:'Continuous with periodic speed changes (VFD)',S9:'Duty with non-periodic load and speed variations',S10:'Duty with discrete constant loads and speeds'};\n    var IP_DESC={IP23:'Protected against solid objects >12mm and spraying water',IP44:'Protected against solid objects >1mm and splashing water',IP54:'Dust-protected; protected against splashing water',IP55:'Dust-protected; protected against water jets',IP56:'Dust-protected; protected against powerful water jets',IP65:'Dust-tight; protected against water jets',IP66:'Dust-tight; protected against powerful water jets'};\n\n    function calculate(){\n        var P=parseFloat($('vc-power').value);\n        var V=parseFloat($('vc-voltage').value);\n        var I=parseFloat($('vc-current').value);\n        var f=parseFloat($('vc-freq').value);\n        var poles=parseInt($('vc-poles').value);\n        var rpm=parseFloat($('vc-rpm').value);\n        var cosphi=parseFloat($('vc-cosphi').value);\n        var ie=$('vc-ie').value;\n        var ins=$('vc-insulation').value;\n        var ip=$('vc-ip').value;\n        var duty=$('vc-duty').value;\n        var frame=$('vc-frame').value;\n\n        if(!P||P<=0||!V||V<=0) {$('vc-results').classList.remove('vc-visible');return}\n\n        var ns=120*f\/poles;\n        var slip=rpm>0?((ns-rpm)\/ns*100):0;\n        var torque=rpm>0?(P*9550\/rpm):0;\n        var Sapp=Math.sqrt(3)*V*I\/1000; \/\/ kVA\n        var Pactive=Sapp*cosphi; \/\/ kW (input)\n        var eta=Pactive>0?(P\/Pactive*100):0;\n        var Qreactive=Math.sqrt(Sapp*Sapp-Pactive*Pactive);\n\n        $('vc-r-torque').innerHTML=fmt(torque,1)+' <span class=\"vc-rcard-unit\">Nm<\/span>';\n        $('vc-r-sync').innerHTML=fmt(ns,0)+' <span class=\"vc-rcard-unit\">RPM<\/span>';\n        $('vc-r-slip').innerHTML=fmt(slip,2)+' <span class=\"vc-rcard-unit\">%<\/span> <span class=\"vc-rcard-unit\">('+fmt(ns-rpm,0)+' RPM)<\/span>';\n        $('vc-r-eff').innerHTML=fmt(eta,1)+' <span class=\"vc-rcard-unit\">%<\/span>';\n        $('vc-r-apparent').innerHTML=fmt(Sapp,2)+' <span class=\"vc-rcard-unit\">kVA<\/span>';\n        $('vc-r-reactive').innerHTML=fmt(Qreactive,2)+' <span class=\"vc-rcard-unit\">kVAr<\/span>';\n\n        \/\/ Decode list\n        var dl=$('vc-decode-list');dl.innerHTML='';\n        var items=[\n            ['Rated Power',P+' kW ('+fmt(P*1.341,1)+' HP)'],\n            ['Voltage',V+' V (3-phase)'],\n            ['Current',I+' A (full load)'],\n            ['Frequency',f+' Hz'],\n            ['Poles',poles+' poles \u2192 Synchronous speed = '+fmt(ns,0)+' RPM'],\n            ['Rated Speed',rpm+' RPM (slip = '+fmt(slip,2)+'%)'],\n            ['Power Factor','cos \u03c6 = '+cosphi],\n            ['Efficiency Class',ie],\n            ['Insulation Class','Class '+ins+' \u2014 Max temperature '+INS_DATA[ins].temp+'\u00b0C, rise limit '+INS_DATA[ins].rise+'\u00b0C'],\n            ['IP Rating',ip+' \u2014 '+(IP_DESC[ip]||'See IEC 60529')],\n            ['Duty Cycle',duty+' \u2014 '+(DUTY_DESC[duty]||'')],\n            ['Frame Size',frame||'\u2014']\n        ];\n        if(frame){\n            var sh=parseInt(frame);\n            if(!isNaN(sh)) items.push(['Shaft Height (est.)',sh+' mm (from frame designation)']);\n        }\n        items.forEach(function(it){dl.innerHTML+='<div class=\"vc-decode-row\"><span class=\"vc-decode-key\">'+it[0]+'<\/span><span class=\"vc-decode-val\">'+it[1]+'<\/span><\/div>'});\n\n        $('vc-results').classList.add('vc-visible');\n    }\n\n    document.querySelectorAll('.vc-preset-btn').forEach(function(btn){\n        btn.addEventListener('click',function(e){\n            e.preventDefault();\n            $('vc-power').value=this.getAttribute('data-p');\n            $('vc-voltage').value=this.getAttribute('data-v');\n            $('vc-current').value=this.getAttribute('data-i');\n            $('vc-freq').value=this.getAttribute('data-f');\n            $('vc-poles').value=this.getAttribute('data-poles');\n            $('vc-rpm').value=this.getAttribute('data-rpm');\n            $('vc-cosphi').value=this.getAttribute('data-cos');\n            $('vc-frame').value=this.getAttribute('data-frame');\n            calculate();\n        });\n    });\n\n    $('vc-form').addEventListener('input',calculate);\n    $('vc-form').addEventListener('change',calculate);\n\n    $('vc-copy-btn').addEventListener('click',function(){\n        var text='Motor Nameplate Decode\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nPower: '+$('vc-power').value+' kW\\nVoltage: '+$('vc-voltage').value+' V\\nCurrent: '+$('vc-current').value+' A\\nTorque: '+$('vc-r-torque').textContent+'\\nSync Speed: '+$('vc-r-sync').textContent+'\\nSlip: '+$('vc-r-slip').textContent+'\\nEfficiency: '+$('vc-r-eff').textContent+'\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nvibromera.eu';\n        if(navigator.clipboard){navigator.clipboard.writeText(text).then(function(){var b=$('vc-copy-btn');b.classList.add('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg> Copied!';setTimeout(function(){b.classList.remove('vc-copied');b.innerHTML='<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> Copy'},2000)})}\n    });\n\n    document.querySelectorAll('.vc-section-toggle').forEach(function(btn){btn.addEventListener('click',function(){var s=this.closest('.vc-section');s.classList.toggle('vc-open');this.setAttribute('aria-expanded',s.classList.contains('vc-open'))})});\n\n    var faqData=[\n        {q:'What does the frame size number mean?',a:'<p>The frame size number (e.g., 160) indicates the shaft center height in mm from the base. The letter suffix (S, M, L) indicates the frame length. So \"160M\" means 160 mm shaft height, medium length frame.<\/p>'},\n        {q:'What is motor slip?',a:'<p>Slip is the difference between synchronous speed and actual rotor speed, expressed as a percentage. Induction motors always run slightly slower than synchronous speed. Typical slip is 2\u20135% at full load. Higher slip usually means lower efficiency.<\/p>'},\n        {q:'What does S1 duty cycle mean?',a:'<p>S1 (continuous duty) means the motor is designed to run at constant load indefinitely. The thermal equilibrium is reached during operation. This is the most common duty rating for industrial motors.<\/p>'},\n        {q:'Why do motors have insulation class F but temperature rise class B?',a:'<p>This is a common practice called \"Class F insulation, Class B rise.\" The motor uses Class F insulation materials (155\u00b0C limit) but is designed to operate with Class B temperature rise (80\u00b0C). This gives a thermal safety margin of ~25\u00b0C, extending insulation life significantly.<\/p>'},\n        {q:'How do I convert kW to HP?',a:'<p>1 kW = 1.341 HP (mechanical horsepower). So an 11 kW motor is approximately 15 HP. Conversely, 1 HP = 0.7457 kW.<\/p>'}\n    ];\n    var faqList=$('vc-faq-list');\n    faqData.forEach(function(faq){faqList.innerHTML+='<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>'+faq.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\">'+faq.a+'<\/div><\/div><\/div>'});\n    faqList.addEventListener('click',function(e){var btn=e.target.closest('.vc-faq-q');if(!btn)return;btn.closest('.vc-faq-item').classList.toggle('vc-open')});\n\n    function init(){calculate()}\n    if(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',init)}else{init()}\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Decode any electric motor nameplate. Enter rated power, voltage, current, frequency, poles, RPM, cos \u03c6, IE class, insulation class, IP rating, duty cycle and frame size. Get synchronous speed, slip, efficiency, torque and more.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100159","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/calculator\/100159","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/calculator\/100159\/revisions"}],"predecessor-version":[{"id":100473,"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/calculator\/100159\/revisions\/100473"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/media?parent=100159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/categories?post=100159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/kn\/wp-json\/wp\/v2\/tags?post=100159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}