Starting preset β€” confirm every input β€’ Motor Current Estimation

75 kW 400V 3-Phase Motor Running-Current Estimate

Full load current calculation for a 75 kW 400V 50Hz heavy-duty pump/compressor motor.

Material & Design StandardUses an entered 94% efficiency and 0.87 power factor. Confirm nameplate values and the applicable IEC 60034 efficiency classification for the specific motor.
Engineering Velocity / Load CheckStarting current and duration depend on motor and driven-load data. This result does not select cables, protection, a starter, or a utility-compliant starting method.
SPECIFICATION SHEET β€’ SI METRIC
CAT: ELECTRICAL-ENERGY

Motor Current Estimation

Calculate full-load line current (FLA) for 3-phase induction electric motors based on power rating and voltage.

πŸ’‘ Engineering Knowledge PrimerFull-Load Amperes (FLA) represents the continuous line current drawn by an electric motor operating at rated power and voltage. Sizing electrical cables, contactors, and circuit breakers requires accurate FLA calculation based on motor nameplate efficiency.
Scenario values were pre-populated from a saved, shared, or starting preset case. Confirm every value before use.
CALCULATION SCOPE β€” Deterministic calculation within the published assumptions. Independently verify all design decisions and project-specific code requirements.
INPUT DESIGN PARAMETERS (SI)
kW
V
%
1
CALCULATED SPECIFICATION OUTPUT
Full-Load Current (FLA)
⚑
132.4 A

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. Compressed-Air Demand Sizing2. Compressed-Air Compressor Power3. Motor Current Estimation4. Plant Energy Consumption & Cost5. Industrial CO2 Carbon Emissions

Technical Methodology & Engineering Principles

GOVERNING EQUATION
FLA (A) = [ Power (kW) Γ— 1000 ] / [ √3 Γ— V Γ— (Ξ·/100) Γ— cos Ο† ]
Assumptions & Scope

Standard 3-phase squirrel cage induction motor.

Operating Range & Boundary

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