⚡ IEC 60364-5-52 · DIN VDE · NEK 400 · SS 436 40 00

Kabeltværsnit for 45 Ampere ved 25 Meter (400V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 45 A over 25 m ved 400V.

Copper Cable (≤3% Drop)10 mm²Drop: 4.17V (1.04%)

Aluminum Cable (≤3% Drop)16 mm²Drop: 4.3V (1.07%)

Voltage at Load395.8 VLine Loss: 325.0 W

Max Power & Breaker31.18 kW45A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 45A at 25m

Cross-Section (mm²)	Cu Ampacity	Al Ampacity	Cu Voltage Drop	Load Voltage	Al Voltage Drop	Power Loss	Status
1.5 mm²	16 A	12 A	27.8 V (6.95%)	372.2 V	45.86 V (11.46%)	2166.8 W	Drop High
2.5 mm²	24 A	18 A	16.68 V (4.17%)	383.3 V	27.51 V (6.88%)	1300.0 W	Drop High
4 mm²	32 A	25 A	10.42 V (2.61%)	389.6 V	17.2 V (4.3%)	812.5 W	Drop High
6 mm²	41 A	32 A	6.95 V (1.74%)	393.1 V	11.46 V (2.87%)	541.7 W	Drop High
10 mm²	57 A	44 A	4.17 V (1.04%)	395.8 V	6.88 V (1.72%)	325.0 W	✓ OK (≤3%)
16 mm²	76 A	59 A	2.61 V (0.65%)	397.4 V	4.3 V (1.07%)	203.1 W	✓ OK (≤3%)
25 mm²	101 A	78 A	1.67 V (0.42%)	398.3 V	2.75 V (0.69%)	130.0 W	✓ OK (≤3%)
35 mm²	125 A	97 A	1.19 V (0.3%)	398.8 V	1.97 V (0.49%)	92.9 W	✓ OK (≤3%)
50 mm²	151 A	118 A	0.83 V (0.21%)	399.2 V	1.38 V (0.34%)	65.0 W	✓ OK (≤3%)
70 mm²	192 A	150 A	0.6 V (0.15%)	399.4 V	0.98 V (0.25%)	46.4 W	✓ OK (≤3%)
95 mm²	232 A	181 A	0.44 V (0.11%)	399.6 V	0.72 V (0.18%)	34.2 W	✓ OK (≤3%)
120 mm²	269 A	210 A	0.35 V (0.09%)	399.7 V	0.57 V (0.14%)	27.1 W	✓ OK (≤3%)
150 mm²	309 A	241 A	0.28 V (0.07%)	399.7 V	0.46 V (0.11%)	21.7 W	✓ OK (≤3%)
185 mm²	353 A	275 A	0.23 V (0.06%)	399.8 V	0.37 V (0.09%)	17.6 W	✓ OK (≤3%)
240 mm²	415 A	324 A	0.17 V (0.04%)	399.8 V	0.29 V (0.07%)	13.5 W	✓ OK (≤3%)
300 mm²	477 A	372 A	0.14 V (0.03%)	399.9 V	0.23 V (0.06%)	10.8 W	✓ OK (≤3%)
400 mm²	570 A	445 A	0.1 V (0.03%)	399.9 V	0.17 V (0.04%)	8.1 W	✓ OK (≤3%)

Til 45 Ampere over 25 meter ved 400V anbefales 10 mm² kobberkabel (spændingsfald 4.17V / 1.04%).

Det svarer til 31.18 kW med en anbefalet sikring på 45A.