SPECIFICATION SHEET β€’ SI METRIC
CAT: ELECTRICAL-ENERGY

Three-Phase Electrical Power

Calculate real power (kW), apparent power (kVA), reactive power (kVAR), and full-load line current for 3-phase AC systems.

πŸ’‘ Engineering Knowledge PrimerThree-phase AC power calculation evaluates active real power (kW, doing useful mechanical work), apparent power (kVA, total system capacity), and reactive power (kVAR). High power factor (cos Ο† > 0.90) minimizes utility demand charges.
CALCULATION SCOPE β€” Deterministic calculation within the published assumptions. Independently verify all design decisions and project-specific code requirements.
INPUT DESIGN PARAMETERS (SI)
V
A
1
CALCULATED SPECIFICATION OUTPUT
Real Active Power (P)
⚑
53.8 kW
Apparent Power (S)61.1 kVA
Reactive Power (Q)29 kVAR

Carry Forward Calculated Result to Next Stage

In industrial design pipelines, calculations naturally feed into downstream tools. Click below to pass your calculated output directly into the next stage:

NEXT STAGE 0153.8
Plant Energy Consumption

Carry real electrical power in the active unit system.

NEXT STAGE 0253.8
Motor Current

Carry nameplate-equivalent power only after confirming it represents one motor.

Related planning checklists

This calculator appears in the following engineering planning checklists:

1. Three-Phase Electrical Power2. Motor Current Estimation3. Transformer kVA Rating & Load Sizing (IEC 60076)4. Plant Energy Consumption & Cost
1. Three-Phase Electrical Power2. Plant Energy Consumption & Cost3. Industrial CO2 Carbon Emissions4. Solar PV Array & Battery Storage (BESS) Sizing
1. Three-Phase Electrical Power2. Transformer kVA Rating & Load Sizing (IEC 60076)3. Battery Runtime & Backup Capacity
1. Three-Phase Electrical Power2. Diesel Generator Fuel Consumption3. Plant Energy Consumption & Cost4. Industrial CO2 Carbon Emissions
1. Three-Phase Electrical Power2. Power Factor Correction & Capacitor Sizing3. Transformer kVA Rating & Load Sizing (IEC 60076)

Technical Methodology & Engineering Principles

GOVERNING EQUATION
Real Power P (kW) = [ √3 Γ— V Γ— I Γ— cos Ο† ] / 1000 Apparent Power S (kVA) = [ √3 Γ— V Γ— I ] / 1000
Assumptions & Scope

Balanced 3-phase AC system with sinusoidal wave.

Operating Range & Boundary

Use finite, physically meaningful inputs within the stated operating assumptions.