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How the formula for $T'_4$ in IEC was developed
How the formula for $T'_4$ in IEC was developed

Posted on 2026-02-25
In this article we show how the formula for $T'_4$ in IEC 60287-2-1 was derived from the early developments in the 1940's and 1950's to its current form.

Induced voltage on single system (IND)
Induced voltage on single system (IND)

Posted on 2026-02-23
We introduced a new postprocessing plot called "IND" for calculation of induced voltages in the metallic sheaths of a single system as a result of the currents flowing in the conductors. The...

Induced voltage on out‑of‑service cables (WRK)
Induced voltage on out‑of‑service cables (WRK)

Posted on 2026-02-14
We introduced a new postprocessing plot called "WRK" for calculation of induced voltages on a deactivated system as a result of the currents flowing in all other parallel power cables. The method...

Economic optimization of power cables (ECO)
Economic optimization of power cables (ECO)

Posted on 2026-02-13
We introduced a new postprocessing plot called "ECO" for economic optimization of power cables based on IEC 60287-3-2.

Drums in DIN standard dimensions
Drums in DIN standard dimensions

Posted on 2026-01-25
Engineers need to know what standard drum dimensions are typically used in order to plan long cable systems where transportation becomes a very important topic.

Sag - downward vertical deflection
Sag - downward vertical deflection

Posted on 2026-01-14
When a cable heats up, it gets slightly longer. If the endpoints stay fixed, that extra length mostly turns into more droop (sag) and lower tension. Engineers estimate the added sag by using a...

Site reference conditions
Site reference conditions

Posted on 2026-01-06
The standard IEC 60287-3-1 contains reference ambient temperatures and thermal resistivities of soil in various countries. We provide you here with an overview of these values per country.

Cable drum calculator
Cable drum calculator

Posted on 2026-01-05
The cable drum calculator helps you to determine the length of cable of a certain type which fits onto a specific cable drum and it calculates the total weight.

Twisted cables
Twisted cables

Posted on 2026-01-04
Twisting cables reduces the magnetic field because the current direction alternates along the cable length, causing the individual magnetic fields to partially cancel each other out. Our tool can...

Electrical field
Electrical field

Posted on 2026-01-03
The electric field calculator can calculate and visualize the electrical field stress and the voltage gradient within the insulation.

Approximate temperature field (ATF)
Approximate temperature field (ATF)

Posted on 2026-01-02
In Cableizer the approximate temperature distribution can be calculated by using the superposition principle with image sources or the finite element method using Dirichlet boundary conditions for...

Conductor resistance
Conductor resistance

Posted on 2026-01-01
This calculator provides you with a tool to calculate the conductor resistance using Bessel functions of first order to calculate the skin effect.

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