Calctron

From a Simple Cable Sizer to a Protection and Selectivity Hub in Your Pocket

CALCTRON PRO has evolved from a cable calculation tool into one of the most complete and highly valued software packages for electrical technicians and engineers.
Now, in addition to precise Low Voltage sizing, you have the power to carry out Protection and Selectivity Studies (ANSI 50/51) and CT Saturation Analysis, generating graphs and reports ready for approval by utilities or audits.
Save days of work, eliminate complex desktop software, and demonstrate immediate technical authority with safe and integrated decisions.
The Power You Are About to Acquire

1. Complete Low Voltage Report

Conductor Sizing: Define phase and protection (#PE) conductor sizes considering the conductor/insulation type (Copper/PVC), number of conductors per pole, and voltage drop limit.
Automatic Correction Factors: Agile application of reference methods, grouping factors, and ambient temperature correction.
Thermal Safety and Short-Circuit: Calculate the three-phase short-circuit current (Icc3) at the transformer terminals and the LV switchboard.
Evaluate cable withstand capacity using the Joule Thermal Damage and validate the circuit breaker capacity.

2. Protection Coordination and Selectivity (ANSI 50/51)

Relay Parameterisation: Precisely adjust time-delay (51) and instantaneous (50) functions for Phase and Neutral, defining the pick-up current, Dial, and inverse time curves (IEC).
Automatic Graphical Coordination Chart: Visualise the exact coordination between the relay curves (phase/neutral), the high-voltage fuse link, and the transformer inrush curve.
Withstand Points: Visually monitor the system's safety margin against the transformer's ANSI and NANSI points.

3. Advanced CT Saturation Analysis

Real Burden Calculation: Sum the exact impedance shares of the interconnecting cables, the relay's rated burden, and the current transformer itself.
Accuracy Validation: The app calculates the internal saturation voltage under fault conditions (Icc3) and compares it with the CT's rated nameplate voltage, ensuring correct protection operation according to IEC standards.
High-Value Technical Reports in Seconds

Forget the manual assembly of calculation sheets.
CALCTRON PRO generates professional reports in PDF format ready for export, featuring:

Organised installation nominal data and input parameters.
Detailed, auditable, and traceable calculation sheets.

The selectivity coordination graph plotted in high resolution.
Why is CALCTRON PRO your main technical partner?
Response Speed: Deliver complex analyses in minutes that would require hours in desktop software.
Mobility and Autonomy: Perform simulations and parameterisation changes directly in the field, in front of the panel or the client.
Normative Precision: Results strictly aligned with current regulatory criteria.

Master electrical protection, optimise your projects, and raise the value of your technical hour.
Download CALCTRON PRO now and carry real engineering in your pocket.