Medium Voltage Calculations

Ángel Martínez

Contains adsIn-app purchases

About this app

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 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 curves with different voltage levels
- Removal of ads with any purchase made

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




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