toololis
Voltar Voltar to Calculadora
🔌

Calculadora de Dimensionamento de Motor Trifásico — Ferramenta online grátis

kW + V + cos φ + eficiência → corrente + proteção

Dimensionamento de motor trifásico: corrente nominal a partir de kW, tensão, fator de potência, eficiência. Mais corrente de partida e proteção recomendada.

📚
Saiba mais

Three-Phase Motor Sizing Calculadora

Full-load current, locked-rotor amps, recommended overload protection. From kW + voltage + power factor + efficiency. IEC standard sizing.

How to use this tool

  1. 1

    Motor rating

    kW + voltage + cos φ + efficiency.

  2. 2

    See full-load current

    Plus locked-rotor amps.

  3. 3

    Protection sizing

    Overload + short-circuit recommendations.

Frequently Asked Questions

Three-phase current formula?
I = P / (√3 × V × cos φ × η). Power in W, voltage line-to-line, cos φ = power factor, η = efficiency. For 11 kW @ 400V, 0.85 PF, 92% eff: I = 11000 / (1.732 × 400 × 0.85 × 0.92) ≈ 20.3 A.
Locked-rotor (starting) current?
Typically 5-7× full-load current. Code letter on nameplate: B = 6.3-7.1 kVA/HP, F = 5.0-5.6, etc. Affects upstream protection + cable sizing.
Overload protection setting?
Per IEC: 1.05-1.20 × full-load current (FLA). For class 10A relay (most common): 1.15 × FLA. Set higher for high-inertia loads (compressor, fan with damper).

Pontos-chave

  • Three-Phase Motor Sizing Calculadora is a free, browser-based calculator tool — kw + v + cos φ + efficiency → current + protection.
  • Não signup, no downloads, no file uploads — your data stays on your device.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Three-Phase Motor Sizing Calculadora

  1. Open the tool: Launch Three-Phase Motor Sizing Calculadora on Ferramentaolis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Three-Phase Motor Sizing Calculadora — Quick Facts

Preço
Grátis — sem limites, sem marca d’água, sem paywall
Privacidade
100% no navegador — nenhum dado é enviado a servidores
Plataforma
Qualquer navegador moderno — desktop, tablet ou celular
Categoria
Calculadora Ferramentas on Ferramentaolis
Offline
Works offline after first visit (Progressive Web App)
RecursoDetalhes
FerramentaThree-Phase Motor Sizing Calculadora
CategoriaCalculadora
Cadastro necessárioNão
Upload de arquivoNenhum — processado no navegador
Suporte mobileTotalmente responsivo
CustoGrátis para sempre

Why Use Three-Phase Motor Sizing Calculadora?

You should try Three-Phase Motor Sizing Calculadora for a quick, private way to kw + v + cos φ + efficiency → current + protection. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

You might also like

🔒
100% Privacidade. Esta ferramenta funciona inteiramente no seu navegador. Seus dados nunca são enviados a nenhum servidor.