Rack PDU Phase Balance Calculator
Quantify phase-current imbalance for a three-phase rack PDU from measured per-phase real power.
Result
Formula
Calculation logicFormula definitions and substituted values.
Phase A current (A)
Phase A real power (kW) * 1000 / (Line-to-neutral voltage (V) * Power factor (decimal))
Phase A real power (kW) * 1000 / (Line-to-neutral voltage (V) * Power factor (decimal))Phase B current (A)
Phase B real power (kW) * 1000 / (Line-to-neutral voltage (V) * Power factor (decimal))
Phase B real power (kW) * 1000 / (Line-to-neutral voltage (V) * Power factor (decimal))Phase C current (A)
Phase C real power (kW) * 1000 / (Line-to-neutral voltage (V) * Power factor (decimal))
Phase C real power (kW) * 1000 / (Line-to-neutral voltage (V) * Power factor (decimal))Average phase current (A)
(Phase A current (A) + Phase B current (A) + Phase C current (A)) / 3
(Phase A current (A) + Phase B current (A) + Phase C current (A)) / 3Max Deviation A
max(abs(Phase A current (A) - Average phase current (A)), abs(Phase B current (A) - Average phase current (A)), abs(Phase C current (A) - Average phase current (A)))
max(abs(Phase A current (A) - Average phase current (A)), abs(Phase B current (A) - Average phase current (A)), abs(Phase C current (A) - Average phase current (A)))Maximum phase-current deviation from average (%)
Max Deviation A / Average phase current (A) * 100
Max Deviation A / Average phase current (A) * 100Related calculators
Data Center Capacity Growth Calculator
Project future IT load from a current load and an assumed constant annual growth rate.
Open calculatorData Center Cooling Airflow Capacity Calculator
Estimate sensible heat removal from airflow and supply-to-return air temperature difference.
Open calculatorData Center Cooling Tower Makeup Water Calculator
Estimate evaporative cooling tower evaporation, drift, blowdown, and makeup water from recirculation flow, water temperature range, and cycles of concentration.
Open calculatorData Center Electrical Capacity Calculator
Estimate facility electrical input capacity from IT load, target PUE, and an explicit reserve fraction.
Open calculator