kW를 볼트 계산기
전력 소비량과 최대 전류 흐름을 알고 있을 때 필요한 전압 수준을 확인하세요. 배전 계획 및 변압기 설정에 매우 중요합니다.
전압 산출
전력 + 전류 → 전압
목표 전력을 전달하는 데 필요한 전위차입니다.
변환 공식
전압 계산은 회로 유형에 따라 다릅니다. 상과 역률이 계산을 크게 변화시킵니다.
직류 시스템
V = (kW × 1000) ÷ I 전류로 나눈 단순 전력 계산입니다. 배터리 뱅크, 태양광 어레이, 직류 회로에 사용됩니다.
1상 AC
V = (kW × 1000) ÷ (I × PF) 주택 및 경상업용 표준입니다. 역률은 모터와 같은 무효 부하를 반영합니다.
3상 AC
V = (kW × 1000) ÷ (√3 × I × PF) 산업용 표준입니다. 모든 삼상 선간 전압 계산에는 √3(1.732) 계수가 필요합니다.
How to Convert kW to Volts
Calculating voltage from power and current is a fundamental electrical task — useful when verifying system design, checking nameplate data, or troubleshooting circuits. Because voltage, current, and power are linked by Ohm's Law and power equations, you need to know both the power in kilowatts and the current in amps to solve for voltage.
Key Takeaway
Higher voltage at the same power means less current flows. This is why transmission lines run at hundreds of thousands of volts — thin wires can carry enormous power with minimal resistive loss when current is kept low.
Step-by-Step Conversion Guide
- Identify the Power: Read the kW rating from your device or system specification sheet.
- Find the Current: Locate the ampere rating on the equipment nameplate or measure it with a clamp meter.
- Determine Circuit Type: Is it DC, single-phase AC (residential), or three-phase AC (industrial)?
- Apply the Power Factor: For AC circuits, locate the power factor (PF) on the nameplate — typically 0.8–0.95 for motors and 1.0 for purely resistive loads.
- Calculate: Divide (kW × 1000) by the appropriate denominator based on your circuit type.
Common System Voltages
- 12V / 24V / 48V: DC systems — automotive, solar, telecom, and battery storage.
- 120V / 240V: North American residential single-phase AC (split-phase).
- 208V / 480V: US commercial and industrial three-phase AC.
- 230V / 400V: European and international single-phase and three-phase standards.