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

Kabeltværsnit for 40 Ampere ved 70 Meter (400V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 40 A over 70 m ved 400V.

Copper Cable (≤3% Drop)10 mm²Drop: 10.38V (2.59%)

Aluminum Cable (≤3% Drop)16 mm²Drop: 10.7V (2.67%)

Voltage at Load389.6 VLine Loss: 719.0 W

Max Power & Breaker27.71 kW40A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 40A at 70m

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	69.19 V (17.3%)	330.8 V	114.13 V (28.53%)	4793.6 W	Drop High
2.5 mm²	24 A	18 A	41.51 V (10.38%)	358.5 V	68.48 V (17.12%)	2876.2 W	Drop High
4 mm²	32 A	25 A	25.95 V (6.49%)	374.1 V	42.8 V (10.7%)	1797.6 W	Drop High
6 mm²	41 A	32 A	17.3 V (4.32%)	382.7 V	28.53 V (7.13%)	1198.4 W	~ ≤5%
10 mm²	57 A	44 A	10.38 V (2.59%)	389.6 V	17.12 V (4.28%)	719.0 W	✓ OK (≤3%)
16 mm²	76 A	59 A	6.49 V (1.62%)	393.5 V	10.7 V (2.67%)	449.4 W	✓ OK (≤3%)
25 mm²	101 A	78 A	4.15 V (1.04%)	395.8 V	6.85 V (1.71%)	287.6 W	✓ OK (≤3%)
35 mm²	125 A	97 A	2.97 V (0.74%)	397.0 V	4.89 V (1.22%)	205.4 W	✓ OK (≤3%)
50 mm²	151 A	118 A	2.08 V (0.52%)	397.9 V	3.42 V (0.86%)	143.8 W	✓ OK (≤3%)
70 mm²	192 A	150 A	1.48 V (0.37%)	398.5 V	2.45 V (0.61%)	102.7 W	✓ OK (≤3%)
95 mm²	232 A	181 A	1.09 V (0.27%)	398.9 V	1.8 V (0.45%)	75.7 W	✓ OK (≤3%)
120 mm²	269 A	210 A	0.86 V (0.22%)	399.1 V	1.43 V (0.36%)	59.9 W	✓ OK (≤3%)
150 mm²	309 A	241 A	0.69 V (0.17%)	399.3 V	1.14 V (0.29%)	47.9 W	✓ OK (≤3%)
185 mm²	353 A	275 A	0.56 V (0.14%)	399.4 V	0.93 V (0.23%)	38.9 W	✓ OK (≤3%)
240 mm²	415 A	324 A	0.43 V (0.11%)	399.6 V	0.71 V (0.18%)	30.0 W	✓ OK (≤3%)
300 mm²	477 A	372 A	0.35 V (0.09%)	399.7 V	0.57 V (0.14%)	24.0 W	✓ OK (≤3%)
400 mm²	570 A	445 A	0.26 V (0.06%)	399.7 V	0.43 V (0.11%)	18.0 W	✓ OK (≤3%)

Til 40 Ampere over 70 meter ved 400V anbefales 10 mm² kobberkabel (spændingsfald 10.38V / 2.59%).

Det svarer til 27.71 kW med en anbefalet sikring på 40A.