Amp kepada Kuasa Kuda Kalkulator
Kira secara songsang kuasa output motor anda dalam Kuasa Kuda berdasarkan arus yang ditariknya daripada talian. Sesuai untuk mengesahkan spesifikasi peralatan di lapangan.
Audit Kuasa Motor
Amperan → HP Output
Kuasa kuda aci berdasarkan input elektrik.
Formula Penukaran
Output kuasa kuda motor dikira daripada input elektrik — kecekapan dan faktor kuasa menentukan berapa banyak tenaga menjadi kerja mekanikal.
Motor DC
HP = (I × V × Eff) ÷ 746 Kuasa input elektrik (I × V) didarab dengan kecekapan memberikan watt output, yang dibahagikan dengan 746 untuk mendapatkan kuasa kuda.
Motor AC 1-Fasa
HP = (I × V × Eff × PF) ÷ 746 Motor AC memerlukan faktor kuasa — hanya bahagian kuasa benar (V × I × PF) ditukar kepada output mekanikal.
Motor AC 3-Fasa
HP = (√3 × I × V × Eff × PF) ÷ 746 Faktor √3 mengambil kira pengagihan kuasa merentasi tiga fasa. Motor tiga fasa menghantar lebih banyak kuasa setiap amp berbanding satu fasa.
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.