Add optional cable-sizing module
Per-circuit cross-section recommendation as a separate module attached to the circuit list. It never writes project data itself: "Übernehmen" applies cable type, cross-section and length through the regular circuit.update command, so revisions and Undo/Redo stay intact. - Pure domain module (src/cable-sizing) with IEC 60364-5-52:2009 Annex B tables for PVC and XLPE, copper and aluminium, methods A1, A2, B1, B2, C, D1, D2 and E. Every value was cross-checked against public reproductions; where sources differ the lower value is used (docs/cable-sizing-module.md). - Temperature and grouping between table values round to the safer value; values outside the tables return no result instead of a factor of 1. Ground methods use B.52.18 (D2) and B.52.19 A (D1). - Overload protection: circuit-breakers In <= Iz; gG fuses additionally I2 <= 1.45 Iz with I2 = 1.6/1.9/2.1 In. - Inputs prefilled from the circuit: power, phase (group or device rows), project voltage, power-weighted cos phi, length and protective device. - Opened from a "Leitungsberechnung" button in the row actions, not from a grid cell, so cable cells keep the spreadsheet behavior. - Stateless API under /api/cable-sizing; no database table or migration. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Grovy311
parent
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17 changed files with 1999 additions and 4 deletions
571
src/frontend/components/cable-sizing-modal.tsx
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571
src/frontend/components/cable-sizing-modal.tsx
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"use client";
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import { type FormEvent, useMemo, useState } from "react";
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import {
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CONDUCTOR_MATERIALS,
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CROSS_SECTIONS_MM2,
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HARMONIC_NEUTRAL_LOAD_LABELS,
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HARMONIC_NEUTRAL_LOAD_OPTIONS,
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INSULATION_MATERIALS,
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INSULATION_MATERIAL_LABELS,
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LAYING_METHODS,
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LAYING_METHOD_GROUP,
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LAYING_METHOD_LABELS,
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MAX_GROUPING_CIRCUITS,
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PRACTICAL_MINIMUM_CROSS_SECTION_MM2,
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REFERENCE_TEMPERATURE_C,
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temperatureOptions,
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type CableSizingAlert,
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type CableSizingInput,
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type CableSizingResult,
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type CircuitCategory,
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type ConductorMaterial,
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type HarmonicNeutralLoad,
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type InsulationMaterial,
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type LayingMethod,
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} from "../../cable-sizing/domain/cable-sizing-calculation";
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import { calculateCableSizing } from "./cable-sizing-api";
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import type { CircuitTreeCircuitDto } from "../types";
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import {
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deriveCircuitCosPhi,
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deriveCircuitPhase,
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toExistingProtection,
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} from "./cable-sizing-defaults";
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import { FormModal } from "./form-modal";
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interface CableSizingModalProps {
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circuit: CircuitTreeCircuitDto;
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circuitCategory?: CircuitCategory;
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singlePhaseVoltageV: number;
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threePhaseVoltageV: number;
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isSaving: boolean;
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onClose: () => void;
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onApply: (patch: {
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cableCrossSection: string;
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cableType?: string;
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cableLength?: number;
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}) => Promise<void>;
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}
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// Extracts the first decimal number from a free-text cross-section entry
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// like "2.5 mm²" or "2,5"; used only for the manual-entry sanity check.
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function parseCrossSectionMm2(text: string): number | null {
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const match = text.match(/([0-9]+(?:[.,][0-9]+)?)/);
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if (!match) return null;
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const value = Number(match[1].replace(",", "."));
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return Number.isFinite(value) ? value : null;
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}
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const formatNumber = (value: number, digits: number) =>
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value.toLocaleString("de-DE", { minimumFractionDigits: digits, maximumFractionDigits: digits });
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export function CableSizingModal({
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circuit,
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circuitCategory,
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singlePhaseVoltageV,
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threePhaseVoltageV,
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isSaving,
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onClose,
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onApply,
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}: CableSizingModalProps) {
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const derivedPhase = deriveCircuitPhase(circuit, circuitCategory);
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const derivedCosPhi = deriveCircuitCosPhi(circuit);
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const existingProtection = toExistingProtection(circuit.protectionDevice);
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const [layingMethod, setLayingMethod] = useState<LayingMethod>("C");
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const [insulation, setInsulation] = useState<InsulationMaterial>("pvc");
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const [conductorMaterial, setConductorMaterial] = useState<ConductorMaterial>("copper");
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const [ambientTemperatureC, setAmbientTemperatureC] = useState(30);
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const [groupingCircuits, setGroupingCircuits] = useState(1);
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const [cosPhi, setCosPhi] = useState(derivedCosPhi);
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const [maxVoltageDropPercent, setMaxVoltageDropPercent] = useState(3);
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const [harmonicNeutralLoad, setHarmonicNeutralLoad] = useState<HarmonicNeutralLoad>("none");
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const [lengthM, setLengthM] = useState(circuit.cableLength ?? 0);
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const [phase, setPhase] = useState<1 | 3>(derivedPhase);
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// Manual entry: applying never requires a calculation. Prefilled from the
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// circuit so an existing cable specification is not lost.
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const [manualCableType, setManualCableType] = useState(circuit.cableType ?? "");
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const [manualCrossSection, setManualCrossSection] = useState(circuit.cableCrossSection ?? "");
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const [calculating, setCalculating] = useState(false);
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const [result, setResult] = useState<CableSizingResult | null>(null);
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const [alerts, setAlerts] = useState<CableSizingAlert[]>([]);
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const [error, setError] = useState<string | null>(null);
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const voltage =
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phase === derivedPhase && circuit.voltage
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? circuit.voltage
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: phase === 3
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? threePhaseVoltageV
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: singlePhaseVoltageV;
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const group = LAYING_METHOD_GROUP[layingMethod];
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const availableTemperatures = temperatureOptions(layingMethod, insulation);
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const input: CableSizingInput = useMemo(
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() => ({
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phase,
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mode: "power",
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powerKw: circuit.circuitTotalPower,
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cosPhi,
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voltage,
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lengthM,
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layingMethod,
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conductorMaterial,
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insulation,
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ambientTemperatureC,
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groupingCircuits,
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maxVoltageDropPercent,
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harmonicNeutralLoad,
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existingProtection,
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circuitCategory,
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}),
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[
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phase,
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circuit.circuitTotalPower,
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cosPhi,
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voltage,
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lengthM,
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layingMethod,
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conductorMaterial,
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insulation,
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ambientTemperatureC,
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groupingCircuits,
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maxVoltageDropPercent,
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harmonicNeutralLoad,
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existingProtection?.ratedCurrentA,
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existingProtection?.kind,
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circuitCategory,
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]
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);
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const manualCrossSectionWarning = useMemo(() => {
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const trimmed = manualCrossSection.trim();
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if (!trimmed) return null;
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const parsed = parseCrossSectionMm2(trimmed);
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if (parsed == null) return null;
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if (!(CROSS_SECTIONS_MM2 as readonly number[]).includes(parsed)) {
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return `${formatNumber(parsed, parsed % 1 ? 1 : 0)} mm² ist kein Normquerschnitt (${CROSS_SECTIONS_MM2.map((value) => formatNumber(value, value % 1 ? 1 : 0)).join(", ")}).`;
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}
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if (
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result?.supported &&
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result.recommendedCrossSectionMm2 != null &&
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parsed < result.recommendedCrossSectionMm2
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) {
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return `${formatNumber(parsed, parsed % 1 ? 1 : 0)} mm² ist kleiner als die zuletzt berechnete Empfehlung (${formatNumber(result.recommendedCrossSectionMm2, result.recommendedCrossSectionMm2 % 1 ? 1 : 0)} mm²).`;
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}
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const practicalMinimum = circuitCategory
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? PRACTICAL_MINIMUM_CROSS_SECTION_MM2[circuitCategory]
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: undefined;
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if (practicalMinimum != null && parsed < practicalMinimum) {
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return `${formatNumber(parsed, parsed % 1 ? 1 : 0)} mm² liegt unter dem Praxis-Mindestquerschnitt für 1-phasige Stromkreise (${formatNumber(practicalMinimum, 1)} mm²).`;
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}
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return null;
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}, [manualCrossSection, result, circuitCategory]);
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function resetResult() {
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setResult(null);
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setAlerts([]);
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}
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function applyReferenceTemperature(method: LayingMethod, material: InsulationMaterial) {
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const options = temperatureOptions(method, material);
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const reference = REFERENCE_TEMPERATURE_C[LAYING_METHOD_GROUP[method]];
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setAmbientTemperatureC(options.includes(reference) ? reference : options[0]);
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}
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async function handleCalculate() {
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setCalculating(true);
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setError(null);
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try {
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const response = await calculateCableSizing(input);
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setResult(response.result);
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setAlerts(response.alerts);
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// The suggestion fills the manual field, which stays the single source
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// of truth for what gets applied.
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if (response.result.supported && response.result.recommendedCrossSectionMm2) {
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const size = response.result.recommendedCrossSectionMm2;
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setManualCrossSection(`${formatNumber(size, size % 1 ? 1 : 0)} mm²`);
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}
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} catch (err) {
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setError(err instanceof Error ? err.message : "Berechnung fehlgeschlagen");
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} finally {
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setCalculating(false);
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}
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}
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async function handleSubmit(event: FormEvent<HTMLFormElement>) {
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event.preventDefault();
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if (!manualCrossSection.trim()) return;
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await onApply({
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cableCrossSection: manualCrossSection.trim(),
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cableType: manualCableType.trim() || undefined,
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cableLength: lengthM,
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});
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}
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const recommendedRow = result?.rows.find((row) => row.recommended);
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return (
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<FormModal
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description="Querschnittsempfehlung nach IEC 60364-5-52 Anhang B (Belastbarkeit, Temperatur, Häufung, Spannungsfall, Schutzorgan) oder direkte Eingabe. Die Empfehlung vor der Übernahme fachlich prüfen; nationale Tabellen (DIN VDE 0298-4) können abweichen."
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isSaving={isSaving}
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onClose={onClose}
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onSubmit={handleSubmit}
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submitDisabled={!manualCrossSection.trim()}
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submitLabel="Übernehmen"
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title={`Leitungsberechnung – ${circuit.equipmentIdentifier}${
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circuit.displayName ? ` (${circuit.displayName})` : ""
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}`}
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>
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<div className="row g-3">
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<div className="col-12 col-md-4">
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<label className="form-label" htmlFor="cable-sizing-length">
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Leitungslänge [m]
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</label>
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<input
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className="form-control"
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id="cable-sizing-length"
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min={0}
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onChange={(event) => {
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setLengthM(Number(event.target.value));
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resetResult();
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}}
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type="number"
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value={lengthM}
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/>
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</div>
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<div className="col-12 col-md-4">
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<label className="form-label" htmlFor="cable-sizing-phase">
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Phasen
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</label>
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<select
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className="form-select"
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id="cable-sizing-phase"
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onChange={(event) => {
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setPhase(Number(event.target.value) as 1 | 3);
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resetResult();
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}}
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value={phase}
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>
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<option value={1}>1~ ({derivedPhase === 1 && circuit.voltage ? circuit.voltage : singlePhaseVoltageV} V)</option>
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<option value={3}>3~ ({derivedPhase === 3 && circuit.voltage ? circuit.voltage : threePhaseVoltageV} V)</option>
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</select>
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{phase !== derivedPhase ? (
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<div className="form-text text-warning">
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Abweichend vom Stromkreis ({derivedPhase === 3 ? "3~" : "1~"}).
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</div>
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) : null}
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</div>
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<div className="col-12 col-md-4">
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<label className="form-label" htmlFor="cable-sizing-power">
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Leistung (aus Stromkreis)
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</label>
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<input
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className="form-control"
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disabled
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id="cable-sizing-power"
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value={`${formatNumber(circuit.circuitTotalPower, 2)} kW`}
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/>
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</div>
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<div className="col-12 col-md-6">
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<label className="form-label" htmlFor="cable-sizing-method">
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Verlegeart
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</label>
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<select
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autoFocus
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className="form-select"
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id="cable-sizing-method"
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onChange={(event) => {
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const method = event.target.value as LayingMethod;
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setLayingMethod(method);
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applyReferenceTemperature(method, insulation);
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resetResult();
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}}
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value={layingMethod}
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>
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{LAYING_METHODS.map((method) => (
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<option key={method} value={method}>
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{LAYING_METHOD_LABELS[method]}
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</option>
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))}
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</select>
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</div>
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<div className="col-12 col-md-6">
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<label className="form-label" htmlFor="cable-sizing-insulation">
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Isolierstoff
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</label>
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<select
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className="form-select"
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id="cable-sizing-insulation"
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onChange={(event) => {
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const material = event.target.value as InsulationMaterial;
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setInsulation(material);
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if (!temperatureOptions(layingMethod, material).includes(ambientTemperatureC)) {
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applyReferenceTemperature(layingMethod, material);
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}
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resetResult();
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}}
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value={insulation}
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>
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{INSULATION_MATERIALS.map((material) => (
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<option key={material} value={material}>
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{INSULATION_MATERIAL_LABELS[material]}
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</option>
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))}
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</select>
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</div>
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<div className="col-12 col-md-4">
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<label className="form-label" htmlFor="cable-sizing-material">
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Leitermaterial
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</label>
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<select
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className="form-select"
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id="cable-sizing-material"
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onChange={(event) => {
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setConductorMaterial(event.target.value as ConductorMaterial);
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resetResult();
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}}
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value={conductorMaterial}
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>
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{CONDUCTOR_MATERIALS.map((material) => (
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<option key={material} value={material}>
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{material === "copper" ? "Kupfer" : "Aluminium"}
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</option>
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))}
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</select>
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</div>
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<div className="col-12 col-md-4">
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<label className="form-label" htmlFor="cable-sizing-temperature">
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{group === "air" ? "Umgebungstemperatur" : "Bodentemperatur"}
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</label>
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<select
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className="form-select"
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id="cable-sizing-temperature"
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onChange={(event) => {
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setAmbientTemperatureC(Number(event.target.value));
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resetResult();
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}}
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value={ambientTemperatureC}
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>
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{availableTemperatures.map((temperature) => (
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<option key={temperature} value={temperature}>
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{temperature} °C
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</option>
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))}
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</select>
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</div>
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<div className="col-12 col-md-4">
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<label className="form-label" htmlFor="cable-sizing-grouping">
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Häufung (Stromkreise)
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</label>
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<input
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className="form-control"
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id="cable-sizing-grouping"
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max={MAX_GROUPING_CIRCUITS}
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min={1}
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onChange={(event) => {
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setGroupingCircuits(Math.max(1, Math.round(Number(event.target.value) || 1)));
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resetResult();
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}}
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step={1}
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type="number"
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value={groupingCircuits}
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/>
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<div className="form-text">
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Anzahl gemeinsam verlegter Stromkreise, einschließlich dieses.
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</div>
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</div>
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{phase === 3 ? (
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<div className="col-12 col-md-6">
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<label className="form-label" htmlFor="cable-sizing-harmonics">
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Oberschwingungen im Neutralleiter
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</label>
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<select
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className="form-select"
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id="cable-sizing-harmonics"
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onChange={(event) => {
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setHarmonicNeutralLoad(event.target.value as HarmonicNeutralLoad);
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resetResult();
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}}
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value={harmonicNeutralLoad}
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>
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{HARMONIC_NEUTRAL_LOAD_OPTIONS.map((option) => (
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<option key={option} value={option}>
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{HARMONIC_NEUTRAL_LOAD_LABELS[option]}
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</option>
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))}
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</select>
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</div>
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) : null}
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<div className="col-12 col-md-3">
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<label className="form-label" htmlFor="cable-sizing-cosphi">
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cos φ
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</label>
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<input
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className="form-control"
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id="cable-sizing-cosphi"
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max={1}
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min={0.1}
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onChange={(event) => {
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setCosPhi(Math.min(1, Math.max(0.1, Number(event.target.value) || 1)));
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resetResult();
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}}
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step={0.01}
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type="number"
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value={cosPhi}
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/>
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<div className="form-text">
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Aus den Gerätezeilen: {formatNumber(derivedCosPhi, 2)}
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</div>
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</div>
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<div className="col-12 col-md-3">
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<label className="form-label" htmlFor="cable-sizing-voltage-drop">
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Max. ΔU [%]
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</label>
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<input
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className="form-control"
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id="cable-sizing-voltage-drop"
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max={10}
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min={0.5}
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onChange={(event) => {
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setMaxVoltageDropPercent(Number(event.target.value) || 3);
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resetResult();
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}}
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step={0.5}
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type="number"
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value={maxVoltageDropPercent}
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/>
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</div>
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<div className="col-12">
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<div className="form-text">
|
||||
Schutzorgan:{" "}
|
||||
{existingProtection
|
||||
? `${existingProtection.kind === "breaker" ? "Leitungsschutzschalter" : "Sicherung gG"} ${existingProtection.ratedCurrentA} A (aus dem Stromkreis, In ≤ Iz und I₂ ≤ 1,45 · Iz)`
|
||||
: "keines mit Überstromschutz hinterlegt – Bemessung nur nach Betriebsstrom"}
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<button
|
||||
className="btn btn-secondary mt-3"
|
||||
disabled={calculating}
|
||||
onClick={handleCalculate}
|
||||
type="button"
|
||||
>
|
||||
{calculating ? "Berechnet …" : "Berechnen"}
|
||||
</button>
|
||||
{error ? <p className="text-danger mt-2">{error}</p> : null}
|
||||
|
||||
{result ? (
|
||||
<div className="mt-3">
|
||||
{result.supported ? (
|
||||
<div className="row g-2">
|
||||
<div className="col-6 col-md-3">
|
||||
<div className="text-muted small">Betriebsstrom I<sub>B</sub></div>
|
||||
<div>{formatNumber(result.operatingCurrentA, 1)} A</div>
|
||||
</div>
|
||||
<div className="col-6 col-md-3">
|
||||
<div className="text-muted small">Erforderliches I<sub>z</sub></div>
|
||||
<div>
|
||||
<strong>{formatNumber(result.designCurrentA, 1)} A</strong>
|
||||
</div>
|
||||
</div>
|
||||
<div className="col-6 col-md-3">
|
||||
<div className="text-muted small">Empfohlener Querschnitt</div>
|
||||
<div>
|
||||
<strong>
|
||||
{result.recommendedCrossSectionMm2 != null
|
||||
? `${formatNumber(result.recommendedCrossSectionMm2, result.recommendedCrossSectionMm2 % 1 ? 1 : 0)} mm²`
|
||||
: "–"}
|
||||
</strong>
|
||||
</div>
|
||||
</div>
|
||||
<div className="col-6 col-md-3">
|
||||
<div className="text-muted small">ΔU bei Empfehlung</div>
|
||||
<div>
|
||||
{result.voltageDropAtRecommendedPercent != null
|
||||
? `${formatNumber(result.voltageDropAtRecommendedPercent, 2)} %`
|
||||
: "–"}
|
||||
</div>
|
||||
</div>
|
||||
<div className="col-6 col-md-3">
|
||||
<div className="text-muted small">Korrekturfaktor gesamt</div>
|
||||
<div>{formatNumber(result.combinedDerationFactor, 2)}</div>
|
||||
</div>
|
||||
<div className="col-6 col-md-3">
|
||||
<div className="text-muted small">Temperatur / Häufung (gerechnet)</div>
|
||||
<div>
|
||||
{result.temperatureUsedC} °C ({formatNumber(result.temperatureFactor ?? 1, 2)}) /{" "}
|
||||
{result.groupingUsed} ({formatNumber(result.groupingFactor ?? 1, 2)})
|
||||
</div>
|
||||
</div>
|
||||
<div className="col-6 col-md-3">
|
||||
<div className="text-muted small">Max. Länge für ΔU</div>
|
||||
<div>
|
||||
{recommendedRow?.maxLengthForVoltageDropM != null
|
||||
? `${recommendedRow.maxLengthForVoltageDropM.toFixed(0)} m`
|
||||
: "–"}
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
) : null}
|
||||
{alerts.map((alert, index) => (
|
||||
<div
|
||||
className={`alert mt-2 mb-0 alert-${
|
||||
alert.kind === "critical"
|
||||
? "danger"
|
||||
: alert.kind === "warn"
|
||||
? "warning"
|
||||
: alert.kind === "ok"
|
||||
? "success"
|
||||
: "info"
|
||||
}`}
|
||||
key={index}
|
||||
>
|
||||
{alert.text}
|
||||
</div>
|
||||
))}
|
||||
</div>
|
||||
) : null}
|
||||
|
||||
<hr className="my-3" />
|
||||
<p className="text-muted small mb-2">
|
||||
Kabeltyp und Querschnitt direkt eingeben oder die Empfehlung übernehmen.
|
||||
Beides landet in denselben Feldern und kann vor dem Übernehmen angepasst
|
||||
werden.
|
||||
</p>
|
||||
<div className="row g-3">
|
||||
<div className="col-12 col-md-6">
|
||||
<label className="form-label" htmlFor="cable-sizing-manual-type">
|
||||
Kabeltyp
|
||||
</label>
|
||||
<input
|
||||
className="form-control"
|
||||
id="cable-sizing-manual-type"
|
||||
onChange={(event) => setManualCableType(event.target.value)}
|
||||
placeholder="z. B. NYM-J 3x2,5"
|
||||
value={manualCableType}
|
||||
/>
|
||||
</div>
|
||||
<div className="col-12 col-md-6">
|
||||
<label className="form-label" htmlFor="cable-sizing-manual-cross-section">
|
||||
Querschnitt
|
||||
</label>
|
||||
<input
|
||||
className="form-control"
|
||||
id="cable-sizing-manual-cross-section"
|
||||
onChange={(event) => setManualCrossSection(event.target.value)}
|
||||
placeholder="z. B. 4 mm²"
|
||||
value={manualCrossSection}
|
||||
/>
|
||||
</div>
|
||||
{manualCrossSectionWarning ? (
|
||||
<div className="col-12">
|
||||
<div className="alert alert-warning mb-0">{manualCrossSectionWarning}</div>
|
||||
</div>
|
||||
) : null}
|
||||
</div>
|
||||
</FormModal>
|
||||
);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue