Voltage Regulation Calculator — Calculate Voltage Drop & Regulation

Voltage Regulation Calculator

Calculate voltage regulation, voltage drop, and power loss in electrical circuits and transformers. Essential for electrical engineers, technicians, and DIY enthusiasts working with AC/DC systems.

Step 1: Electrical Parameters

0.9

Standard Voltage Levels

Residential: 120V/230V. Industrial: 400V/480V. Transmission: 11kV-765kV. Power factor should be ≥0.9 for efficient systems.

Step 2: Cable & Load Specifications

5%

Optimal Voltage Regulation

For residential circuits: ≤3%. For industrial circuits: ≤5%. For transmission lines: ≤10%. Higher regulation causes voltage fluctuations and equipment issues.

Voltage Regulation Results

Summary
Circuit Visualization
Cable Comparison

Voltage Regulation

2.8%
230V source with 10A load over 50m cable
Voltage Drop
6.4 V
Load Voltage
223.6 V
Power Loss
64 W
Compliance
Within Limit

Circuit Visualization

Cable Resistance
0.64 Ω
Voltage at Source
230 V
Voltage at Load
223.6 V
Efficiency
97.2%

Cable Size Comparison

Cable Size (mm²) Voltage Drop Power Loss Regulation % Cost Index

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