# Medium Voltage Calculations 4+

## Angel Martinez

• Gratis
• Offre acquisti in-app

## Descrizione

The most complete tool to support the calculation of high voltage electrical installations.

Free sections:
- Determination of the characteristics of the equipment: rated voltage (Ur), withstand at industrial frequency (Ud), withstand type of lightning (Up), short-term current (Ik)
- Sizing of low and medium voltage insulated cables (≤ 30 kV)
- Calculation criteria for admissible current, voltage drop, short circuit and protection, consideration of different factors for reducing the admissible current: temperature, thermal resistivity of the ground, grouping, sun exposure, etc.
- Multiple installation methods: tray, buried, under pipe, in the air ...
- Visualization of protection relay trip curve and MV cable admissible current
- Protection with transformer limiting fuses
- Earth fault current calculation (isolated neutral and earth)
- PE conductor
- Transformer performance and voltage drop
- Primary/secondary conversions in voltage and current transformers
- Secondary voltage of a transformer acoording to switch position
- Calculation of the transformation center ventilation needs
- Five safety rules
- Consult ANSI codes electrical protections
- Tray sizing
- Representation of 1 IEC curve
- Parameter configuration
Voltages, frequency, conductivity of the conductor material, temperature
MV specific: list type, cable bundle (flat / staggered)
Regulation of LV protections
- Possibility of sharing results

Purchases In-App:
- Calculation of short circuits and impedances with the maximum and minimum values, type diagram with the following configuration: Network, Transformer, MV line, LV line
- Selection of voltage and current transformers (protection and measurement), capacitor bank of the transformer, calculation of the number of insulators
- Protection and adjustment of the transformer overcurrent relay, selectivity with low voltage switch (Ir, Isd, Ii), graph of the actuation curves and identification of characteristic points
- Calculation of medium voltage line (short line model, single circuit) with conductors: AL1 / ST1A (LA), AL1 / S20SA (LARL), AL3 / ST1A (DA), AL3 (D)
- Dimensioning and checking of protective and service grounding installation, system configuration, calculation of Howe parameters, step and contact voltages, distance between grounding, single grounding, additional safety measures and results checking
- Representation of up to 3 IEC curves with different voltage levels

IN NO CASE SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT OR INDIRECT DAMAGES AS A RESULT OF THE CORRECT OR INCORRECT USE OF THE APPLICATION

Icons made by smalllikeart from www.flaticon.com

## Novità

Versione 1.5.0

* Correzioni minori

## Privacy dell’app

Lo sviluppatore, Angel Martinez, ha indicato che le procedure per la tutela della privacy dell’app potrebbero includere il trattamento dei dati descritto di seguito. Per scoprire di più, consulta l’informativa sulla privacy dello sviluppatore.

### Dati non raccolti

Lo sviluppatore non raccoglie alcun dato da quest’app.

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