Tools

Power assessment.

List your equipment and enter its power and diversity factor: the tool calculates the power required, the current on each phase and an indicative connection rating.

Free demo up to 4 lines, full version reserved for our clients by invitation. Your assessment data stays in your browser.

Dark Side Energy · Indicative power assessment ·

Available supply
%
Adjustable assumption, applied to the recommended rating and source.

Equipment and outgoing circuits

Demo: 4 lines maximum. for full access.

Description Zone Qty Unit power (W) Type Phase cos φ Diver­sity Power (kVA)

Line power = quantity × unit power × diversity factor ÷ cos φ. The diversity factor (between 0 and 1) reflects the fact that not all equipment runs at full power at the same time. Single-phase lines set to “Auto” are allocated to the least loaded phase.

Breakdown by phase

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Add your equipment to get the assessment.

    Summary

    Three-phase
    Installed power
    - kW
    Diversified power
    - kW
    Apparent power
    - kVA
    Current on the most loaded phase
    - A

    Indicative recommendations

    Connection rating
    -
    Typical connector
    -
    Source required (including reserve)
    - kVA

    The source is sized on the most loaded phase (3 × 230 V × I max in three-phase), including the reserve. These guidelines do not replace a study: installation conditions, selectivity, operating modes and load criticality still need to be checked.

    How to use it

    A few pointers for filling in your assessment.

    Unit power

    Read it on the equipment's rating plate or data sheet, in watts. If in doubt, our teams draw on field data gathered since 2016.

    The diversity factor

    1 if all the equipment on the line runs at full power at the same time, less otherwise. A realistic diversity factor avoids overcapacity, and therefore unnecessary equipment and energy.

    The line type

    Choose “3ph” for equipment connected in three-phase and “1ph” for the rest. Leave the phase on “Auto” so that the tool balances the phases.

    Calculation method

    1. Installed power of a line = quantity × unit power.
    2. Diversified power = installed power × diversity factor.
    3. Apparent power = diversified power ÷ cos φ.
    4. Current: apparent power ÷ 230 V in single-phase, or ÷ (√3 × 400 V) on each phase in three-phase.
    5. Phase allocation: three-phase lines load all three phases; single-phase lines set to “Auto” are placed one by one, from the most to the least powerful, on the least loaded phase.
    6. Indicative rating: the standard rating (16, 32, 63, 125, 250, 400 A…) immediately above the current on the most loaded phase, including the reserve.
    7. Indicative source: 3 × 230 V × current on the most loaded phase, including the reserve (230 V × current in single-phase).

    Have your assessment validated.

    Send us your assessment: our engineering office checks it and proposes a suitable power distribution.

    Send my assessment contact@darkside-energy.com