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

Kabeltværsnit for 25 Ampere ved 25 Meter (400V)

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

Copper Cable (≤3% Drop)4 mm²Drop: 5.79V (1.45%)

Aluminum Cable (≤3% Drop)4 mm²Drop: 9.55V (2.39%)

Voltage at Load394.2 VLine Loss: 250.8 W

Max Power & Breaker17.32 kW25A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 25A 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	15.44 V (3.86%)	384.6 V	25.48 V (6.37%)	668.7 W	Drop High
2.5 mm²	24 A	18 A	9.27 V (2.32%)	390.7 V	15.29 V (3.82%)	401.2 W	Drop High
4 mm²	32 A	25 A	5.79 V (1.45%)	394.2 V	9.55 V (2.39%)	250.8 W	✓ OK (≤3%)
6 mm²	41 A	32 A	3.86 V (0.97%)	396.1 V	6.37 V (1.59%)	167.2 W	✓ OK (≤3%)
10 mm²	57 A	44 A	2.32 V (0.58%)	397.7 V	3.82 V (0.96%)	100.3 W	✓ OK (≤3%)
16 mm²	76 A	59 A	1.45 V (0.36%)	398.6 V	2.39 V (0.6%)	62.7 W	✓ OK (≤3%)
25 mm²	101 A	78 A	0.93 V (0.23%)	399.1 V	1.53 V (0.38%)	40.1 W	✓ OK (≤3%)
35 mm²	125 A	97 A	0.66 V (0.17%)	399.3 V	1.09 V (0.27%)	28.7 W	✓ OK (≤3%)
50 mm²	151 A	118 A	0.46 V (0.12%)	399.5 V	0.76 V (0.19%)	20.1 W	✓ OK (≤3%)
70 mm²	192 A	150 A	0.33 V (0.08%)	399.7 V	0.55 V (0.14%)	14.3 W	✓ OK (≤3%)
95 mm²	232 A	181 A	0.24 V (0.06%)	399.8 V	0.4 V (0.1%)	10.6 W	✓ OK (≤3%)
120 mm²	269 A	210 A	0.19 V (0.05%)	399.8 V	0.32 V (0.08%)	8.4 W	✓ OK (≤3%)
150 mm²	309 A	241 A	0.15 V (0.04%)	399.8 V	0.25 V (0.06%)	6.7 W	✓ OK (≤3%)
185 mm²	353 A	275 A	0.13 V (0.03%)	399.9 V	0.21 V (0.05%)	5.4 W	✓ OK (≤3%)
240 mm²	415 A	324 A	0.1 V (0.02%)	399.9 V	0.16 V (0.04%)	4.2 W	✓ OK (≤3%)
300 mm²	477 A	372 A	0.08 V (0.02%)	399.9 V	0.13 V (0.03%)	3.3 W	✓ OK (≤3%)
400 mm²	570 A	445 A	0.06 V (0.01%)	399.9 V	0.1 V (0.02%)	2.5 W	✓ OK (≤3%)

Til 25 Ampere over 25 meter ved 400V anbefales 4 mm² kobberkabel (spændingsfald 5.79V / 1.45%).

Det svarer til 17.32 kW med en anbefalet sikring på 25A.