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 InstElectric PRO 1.81

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Tool to support the calculation of electrical installations.

· Dimensioning of low voltage circuits (public concurrence, derivación invidual, LGA, local fire or explosion risk, local dampening, etc.) with the most frequent installation methods
· Calculation of the phase size of the cable, neutral, protective conductor, nominal protection current, voltage drop
· Calculation criteria based on the admissible current of the cable, maximum voltage drop and overcurrent protection
· Calculation of the diameter and designation of the conduit
· Designation of the most used cables/insulated conductors
· Circuits with automatic circuit breaker until In = 4000 A (Ir setting = 0.4 to 1 x In), maximum fuse In = 1600 A (gG type), maximum 12 conductors parallel per phase, maximum size 630 mm²
· Calculation according to UNE-HD 60909-1, including AT network, LT lines and final circuit
· Estimate of the maximum short-circuit current (approximate method)
· Maximum protected length for minimum short circuit (approximate method)
· Calculation of earthing resistance (rods, buried conductor and rings)
· Distance LV earthing and MV earth from the substation

· Forecast of loads of a building destined to houses with several sections: dwellings, common services, commercial premises/offices and garage with/without infrastructure for recharging electric vehicles
· Reactive power of the capacitor bank for the compensation of the power factor (cos φ) and capacity (µF) of the capacitors
· Calculation of the C/K Factor for automatic capacitor bank
· Compensation of the power factor for a three-phase transformer
· Choice of installation system in the function of the circuit, cable and its situation
· Overvoltage due to defects to earth in medium voltage MV depending on the earthing schmemes
· Power in an unbalanced three-phase system
· Overvoltages due to loss of neutral conductor, earth fault and short circuit
· Calculation of the electricity parameters of a single-phase or three-phase (balanced)
· Calculation of a transformer performance
· Determination of the secondary voltage of a transformer acoording to switch position
· Distribution of load of transformers in parallel

· Configuration of constants (voltages, conductivity, temperatures, etc.) that affect electrical calculations
· Adjusting the protections (circuit breakers and fuses)
· Selection of minimum gauge for circuit-breakers with regulation and maximum cable size for multi-conductor grouping per phase
· Selection of the calculation method estimation of the reactance
· Conductivity of the conductor depending on the current of the circuit (constant, according to the expected current, maximum cable temperature)
· Use reduction factors by grouping cables/circuits
· Use of factors of diversity/utilization

· Reference documents: IEC Standards, Reglamento Electrotécnico para Baja Tensión (REBT), Technical Application Guide, RD 1053/2014, (UE) 2016/364

The user of the application (designer / electrician) will be able to make calculations easily and quickly for the dimensioning of the electrical installation or on-site checks

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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