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

Kabeltværsnit for 40 Ampere ved 25 Meter (400V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 40 A over 25 m ved 400V.

Copper Cable (≤3% Drop)6 mm²Drop: 6.18V (1.54%)

Aluminum Cable (≤3% Drop)10 mm²Drop: 6.11V (1.53%)

Voltage at Load393.8 VLine Loss: 428.0 W

Max Power & Breaker27.71 kW40A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 40A 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	24.71 V (6.18%)	375.3 V	40.76 V (10.19%)	1712.0 W	Drop High
2.5 mm²	24 A	18 A	14.83 V (3.71%)	385.2 V	24.46 V (6.11%)	1027.2 W	Drop High
4 mm²	32 A	25 A	9.27 V (2.32%)	390.7 V	15.29 V (3.82%)	642.0 W	Drop High
6 mm²	41 A	32 A	6.18 V (1.54%)	393.8 V	10.19 V (2.55%)	428.0 W	✓ OK (≤3%)
10 mm²	57 A	44 A	3.71 V (0.93%)	396.3 V	6.11 V (1.53%)	256.8 W	✓ OK (≤3%)
16 mm²	76 A	59 A	2.32 V (0.58%)	397.7 V	3.82 V (0.96%)	160.5 W	✓ OK (≤3%)
25 mm²	101 A	78 A	1.48 V (0.37%)	398.5 V	2.45 V (0.61%)	102.7 W	✓ OK (≤3%)
35 mm²	125 A	97 A	1.06 V (0.26%)	398.9 V	1.75 V (0.44%)	73.4 W	✓ OK (≤3%)
50 mm²	151 A	118 A	0.74 V (0.19%)	399.3 V	1.22 V (0.31%)	51.4 W	✓ OK (≤3%)
70 mm²	192 A	150 A	0.53 V (0.13%)	399.5 V	0.87 V (0.22%)	36.7 W	✓ OK (≤3%)
95 mm²	232 A	181 A	0.39 V (0.1%)	399.6 V	0.64 V (0.16%)	27.0 W	✓ OK (≤3%)
120 mm²	269 A	210 A	0.31 V (0.08%)	399.7 V	0.51 V (0.13%)	21.4 W	✓ OK (≤3%)
150 mm²	309 A	241 A	0.25 V (0.06%)	399.8 V	0.41 V (0.1%)	17.1 W	✓ OK (≤3%)
185 mm²	353 A	275 A	0.2 V (0.05%)	399.8 V	0.33 V (0.08%)	13.9 W	✓ OK (≤3%)
240 mm²	415 A	324 A	0.15 V (0.04%)	399.8 V	0.25 V (0.06%)	10.7 W	✓ OK (≤3%)
300 mm²	477 A	372 A	0.12 V (0.03%)	399.9 V	0.2 V (0.05%)	8.6 W	✓ OK (≤3%)
400 mm²	570 A	445 A	0.09 V (0.02%)	399.9 V	0.15 V (0.04%)	6.4 W	✓ OK (≤3%)

Til 40 Ampere over 25 meter ved 400V anbefales 6 mm² kobberkabel (spændingsfald 6.18V / 1.54%).

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