Amperios a Caballos de Fuerza Calculadora
Calcule de forma inversa la potencia de salida de su motor en Caballos de Fuerza según la corriente que consume de la línea. Perfecto para verificar especificaciones de equipos en campo.
Auditoría de Potencia del Motor
Amperaje → HP de Salida
Caballos de fuerza en el eje según la entrada eléctrica.
La Fórmula de Conversión
La potencia de salida del motor se calcula a partir de la entrada eléctrica — la eficiencia y el factor de potencia determinan cuánta energía se convierte en trabajo mecánico.
Motores CC
HP = (I × V × Eff) ÷ 746 La potencia eléctrica de entrada (I × V) multiplicada por la eficiencia da los vatios de salida, que se dividen entre 746 para obtener los caballos de fuerza.
Motores CA Monofásicos
HP = (I × V × Eff × PF) ÷ 746 Los motores de CA requieren factor de potencia — solo la parte de potencia real (V × I × FP) se convierte en salida mecánica.
Motores CA Trifásicos
HP = (√3 × I × V × Eff × PF) ÷ 746 El factor √3 tiene en cuenta la distribución de energía entre tres fases. Los motores trifásicos entregan más potencia por amperio que los monofásicos.
How to Convert Amps to Horsepower
Converting amps to horsepower lets you determine a motor's mechanical output from its electrical input measurements. This is useful when the motor nameplate is damaged or missing, when verifying motor performance, or when comparing measured current draw to the rated HP. The key insight: not all electrical input becomes mechanical output — efficiency and power factor dictate how much is lost as heat.
Understanding Motor Efficiency
Motor efficiency is the ratio of mechanical output power to electrical input power. A 5 HP motor drawing 15A at 240V and 0.85 PF consumes about 3,060W of real input power. At 90% efficiency, it delivers 2,754W (≈ 3.69 HP) of mechanical output. The rest becomes heat in the windings. Premium-efficiency motors minimize this loss.
When to Use This Calculation
- Verifying Motor Output: Measure FLA with a clamp meter and calculate HP to confirm the motor is delivering its rated output.
- Troubleshooting Overloads: If the calculated HP is significantly below rated, the motor may be worn, undersized, or operating with a degraded power factor.
- Pump and Fan Selection: When replacing driven equipment, knowing actual HP output (not just nameplate) prevents under-sizing the new load.
- Energy Audits: Calculate actual HP output versus nameplate rating to identify inefficient motors worth replacing with premium-efficiency units.
Step-by-Step Conversion
- Measure or Find the Current: Use a clamp meter for measured FLA, or use the nameplate value.
- Note the Supply Voltage: Use line-to-line voltage for three-phase; line-to-neutral for single-phase.
- Multiply by Efficiency: Motor efficiency in decimal form (85% = 0.85).
- Multiply by Power Factor (AC): Typical induction motors run 0.80–0.92 PF at full load.
- Divide by 746: Convert watts to horsepower using the 746 W/HP constant.