Selectio circuit-breakeris

Hoc instrumentum calculat rating dispositivorum protectorum (circuit breakers) pro circuitibus electricis secundum IEC 60364-4-43, praebens protectionem contra overloads et short circuits. Idoneum pro designo electrico industriali, commerciali, et aedificatorio.

Descriptio Parametri

Typus Currentis
Select the type of current in the circuit:
- Direct Current (DC): Constant flow from positive to negative pole
- Alternating Current (AC): Reverses direction and amplitude periodically at constant frequency
System configurations:
- Single-phase: Two conductors (phase + neutral)
- Two-phase: Two phase conductors; neutral may be distributed
- Three-phase: Three phase conductors; four-wire system includes neutral

Voltage
Differentia potentialis electrici inter duos punctos.
- For single-phase: Enter Phase-Neutral voltage
- For two-phase or three-phase: Enter Phase-Phase voltage

Load
Potentia quae consideranda est quando determinatur characteristica componentium circuituum.

Power Factor
Ratio potentiae activae ad potentiam apparentem.
Formula:cos φ = P / S

ubi φ est angulus inter tensionem et currentem. Valores rangeantur ab 0 ad 1.

Methodus Installationis
Methodus installationis ut definita in IEC 60364-5-52 (Tabula A.52.3). Exempla includunt:
- Free air
- In conduit
- Underground
- Multiple circuits in a common duct

Nota: Non omnes methodi installationis recognoscuntur in regulis cuiusque nationis.

Ambient Temperature
Temperatura medii circumstantis quando conductor non est oneratus.
Affectat capacitate portandi currentem; communiter referuntur ad 30°C vel 40°C.

Conductor
Material conductoris usitati:
- Copper
- Aluminum
Diversi materiales habent diversam resistivitatem et capacitates portandi currentem.

Insulation
Gradus temperaturae materialis insulatoris:
- PVC (Thermoplastic): 70°C at conductor
- XLPE or EPR (Thermosetting): 90°C at conductor
Altiores temperaturas reducunt performance insulatoris et requirunt derating.

Wire Size
Area sectionalis conductoris, typice in mm².
Determinat maximum currentem permittibile.

Phase Conductors in Parallel
Conductores cum eadem area sectionali, longitudine, et materia possunt connecti in parallelum.
Maximum currentem permittibile est summa currentium maximorum singulorum core.

Circuits in the Same Conduit
Numerus lineae intra ductum alimentantes diversas onera (e.g., 2 lines for 2 motors).
Reduction factors apply based on IEC 60364-5-52 Table B.52.17.

Total Harmonic Distortion (THD)
Totum contentum 3n harmonic current.
Si valor totius 3n harmonic distortion est ignotus, utere valore totius harmonic distortion.
Altus THD auctificat currentem neutralis et affectat sizing breaker.

Protection Device
Dispositivum responsabile pro protectione cabli ab overload et short circuit, sicut circuit breaker vel fuse.

All Parallel Cables Are in a Single Conduit
Check this option if all sets of parallel cables are installed in one duct (derating factor will be applied).
Uncheck if each set is installed in a separate duct.

Definitio: Unum "set" constat unius conductoris per phase + unus conductor neutralis (si requiritur) + unus conductor protector.