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Pfc Sizing

Calculates the reactive power compensation needed to improve a load from an initial lagging power factor to a target power factor. The reduced method uses Qc = P x (tan phi_initial - tan phi_target), then reports the corrected apparent power and current reduction.

inputs

3 fields

context

3 archetypes

engine

with-tool

outputs

4 scored fields

contract fields

Parameter Map

3 inputs to 4 scored outputs

  • real_power_kw

    float

    Real load power

    1 to 20000kW

  • initial_power_factor

    floathidden in hard

    Initial lagging power factor

    0.5 to 0.94

  • target_power_factor

    float

    Target corrected power factor

    0.9 to 0.99
initial_apparent_power_kvatol 0.03

Initial apparent power

corrected_apparent_power_kvatol 0.03

Apparent power after correction

required_reactive_power_kvartol 0.03

Required capacitor reactive power

current_reduction_pcttol 0.03

Reduction in line current at unchanged voltage

visibility contract

Difficulty Ladder

all_giveneasy

Small load with all power factors given

all fields visible
all_givenmedium

Commercial or industrial correction calculation

all fields visible
partialhard

Larger load with initial power factor hidden in context

initial_power_factor

scenario bands

Archetype Atlas

small_commercial_load

2 contexts

Small commercial motor and HVAC load

real_power_kw20 to 250
initial_power_factor0.7 to 0.88
target_power_factor0.92 to 0.97

commercial-switchboard / retail-centre

industrial_motor_load

2 contexts

Industrial motor control centre load

real_power_kw250 to 3000
initial_power_factor0.65 to 0.88
target_power_factor0.93 to 0.99

water-treatment-plant / manufacturing-site

utility_customer_load

2 contexts

Large utility customer connection

real_power_kw3000 to 20000
initial_power_factor0.75 to 0.94
target_power_factor0.95 to 0.99

mining-load / large-campus

rendered task

Generation Preview

water-treatment-plant-industrial-motor-load-preview

difficulty
hard
visibility
partial
archetype
industrial_motor_load
site context
water-treatment-plant
instruction excerptpfc-sizing_calc.py

visible fields

  • real_power_kw250 to 3000 kW
  • target_power_factor0.93 to 0.99

withheld schema

initial_power_factorinitial_apparent_power_kvacorrected_apparent_power_kvarequired_reactive_power_kvarcurrent_reduction_pct
Industrial motor control centre load. water-treatment-plant. Required outputs: initial_apparent_power_kva, corrected_apparent_power_kva, required_reactive_power_kvar, current_reduction_pct