無料 · 建築・現場の計算
電圧降下.
単相または三相の抵抗による電圧降下、または限度に必要な断面を見積もります。
Copper resistivity is 1/58 ohm·mm²/m and aluminium is 0.0282, about 20 °C. Reactance, temperature and installation ampacity are not included. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
- Voltage drop
- 6.62069 V
- Voltage drop
- 2.878561 %
- Resistance
- 0.206897 Ω
Drop = 2 × current × ρ × length / area. ρ is in ohm·mm²/m and area is in mm². Copper uses 1/58 and aluminium 0.0282, about 20 °C. This is a resistive estimate.
使い方: 電圧降下
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英語の技術説明
Copper resistivity is 1/58 ohm·mm²/m and aluminium is 0.0282, about 20 °C. Reactance, temperature and installation ampacity are not included. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
Estimate resistive voltage drop, or the conductor section for a drop limit, in single-phase and three-phase circuits. Copper resistivity is 1/58 ohm·mm²/m and aluminium is 0.0282, about 20 °C. Reactance, temperature and installation ampacity are not included. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
16 A over 30 m on a 2.5 mm² copper conductor at 230 V.