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Voltage rise (multi-segment)

Import or export voltage-change screening across multiple segments. Representative impedance data; verify the selected site limit.

Import/export voltage-change screening with representative segment R/X values and lagging reactive-current magnitude. Confirm site-specific cable data and the selected limit.

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Nominal supply voltage for rise %.

Select a project criterion. Confirm the permitted limit with the DNSP and installation design.

Your own screening limit when the DNSP category does not apply.

Cable segments

Segment 1

Results

Enter inputs, then calculate.

Method and assumptions

Impedance screening with representative cable data, not installation-specific verified tables. Vd = I × L × (R cosφ + X sinφ) × k. Positive current gives a rise for export and a drop for import; lagging reactive-current magnitude is assumed. The selected criterion is not a compliance determination. Verify DNSP and site requirements.

Check the stated method and limits against your installation. Results are calculation aids, not certification.

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Calculation model 2026-11-02.1