Guides: 3-phase
Three-phase power systems are the standard for industrial applications. These guides explain how 3-phase power works, how to calculate it, and when to use it in your electrical designs.
About This Topic
Three-phase power systems are the standard for industrial applications. These guides explain how 3-phase power works, how to calculate it, and when to use it in your electrical designs.
Recommended Learning Path
- Learn the fundamentals of 3-phase power systems
- Understand voltage relationships and phase angles
- Calculate current, power, and kVA for 3-phase loads
- Apply 3-phase calculations to motor and equipment sizing
- Explore power factor and efficiency considerations
Related Calculators
Use these professional calculators to apply the concepts covered in the 3-phase guides:
3-Phase Power Calculator
Calculate three-phase current, kW, and kVA for industrial electrical systems.
Use ToolFactory Load Calculator
Determine total electrical load, current, and breaker ratings for industrial facilities.
Use ToolTransformer Size Calculator
Calculate recommended transformer kVA rating based on load and power factor.
Use ToolAll Articles
Browse all 8 guides covering 3-phase topics:
3-Phase Power Explained: Complete Guide
Understand how 3-phase power works and when to use it. Learn to calculate current, voltage, and power for your industrial applications.
Read Full Article3-Phase Power Calculation Examples
Calculate 3-phase power using real-world examples. Includes clear formulas, step-by-step calculations, and industrial applications.
Read Full Article3-Phase Power Calculation: Common Mistakes and How to Avoid Them
Avoid costly errors in 3-phase power calculations. Learn common mistakes including formula errors, voltage confusion, and power factor issues.
Read Full ArticleHow to Measure Power Factor in 3-Phase Systems: Complete Guide
Measure power factor accurately in 3-phase systems. Step-by-step instructions using power analyzers, clamp meters, and voltmeters with troubleshooting tips.
Read Full ArticleUnbalanced Load in 3-Phase Systems
Learn how to calculate unbalance percentage, neutral current, and correct phase imbalances in 3-phase systems. Formulas, examples, and troubleshooting for electrical engineers.
Read Full ArticleOn-Load vs Off-Load Tap Changer
Learn when to choose on-load (OLTC) vs off-load (OCTC) tap changers for 3-phase systems. Decision criteria, cost-benefit analysis, and selection guide for electrical engineers.
Read Full ArticleTransformer Voltage Regulation Explained
Understand transformer voltage regulation: definition, formula, impedance (Z%), and how it affects 3-phase secondary voltage. Distinguish regulation from conductor voltage drop.
Read Full ArticleCommon Transformer Tap Changer Faults
Learn to identify, diagnose, and prevent common tap changer faults in 3-phase transformers. Symptoms, causes, and maintenance for OLTC and OCTC.
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