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

Kabeltværsnit for 70 Ampere ved 25 Meter (400V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 70 A over 25 m ved 400V.

Copper Cable (≤3% Drop)16 mm²Drop: 4.05V (1.01%)

Aluminum Cable (≤3% Drop)25 mm²Drop: 4.28V (1.07%)

Voltage at Load395.9 VLine Loss: 491.5 W

Max Power & Breaker48.5 kW70A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 70A 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	43.24 V (10.81%)	356.8 V	71.33 V (17.83%)	5243.0 W	Drop High
2.5 mm²	24 A	18 A	25.95 V (6.49%)	374.1 V	42.8 V (10.7%)	3145.8 W	Drop High
4 mm²	32 A	25 A	16.22 V (4.05%)	383.8 V	26.75 V (6.69%)	1966.1 W	Drop High
6 mm²	41 A	32 A	10.81 V (2.7%)	389.2 V	17.83 V (4.46%)	1310.7 W	Drop High
10 mm²	57 A	44 A	6.49 V (1.62%)	393.5 V	10.7 V (2.67%)	786.4 W	Drop High
16 mm²	76 A	59 A	4.05 V (1.01%)	395.9 V	6.69 V (1.67%)	491.5 W	✓ OK (≤3%)
25 mm²	101 A	78 A	2.59 V (0.65%)	397.4 V	4.28 V (1.07%)	314.6 W	✓ OK (≤3%)
35 mm²	125 A	97 A	1.85 V (0.46%)	398.1 V	3.06 V (0.76%)	224.7 W	✓ OK (≤3%)
50 mm²	151 A	118 A	1.3 V (0.32%)	398.7 V	2.14 V (0.53%)	157.3 W	✓ OK (≤3%)
70 mm²	192 A	150 A	0.93 V (0.23%)	399.1 V	1.53 V (0.38%)	112.3 W	✓ OK (≤3%)
95 mm²	232 A	181 A	0.68 V (0.17%)	399.3 V	1.13 V (0.28%)	82.8 W	✓ OK (≤3%)
120 mm²	269 A	210 A	0.54 V (0.14%)	399.5 V	0.89 V (0.22%)	65.5 W	✓ OK (≤3%)
150 mm²	309 A	241 A	0.43 V (0.11%)	399.6 V	0.71 V (0.18%)	52.4 W	✓ OK (≤3%)
185 mm²	353 A	275 A	0.35 V (0.09%)	399.6 V	0.58 V (0.14%)	42.5 W	✓ OK (≤3%)
240 mm²	415 A	324 A	0.27 V (0.07%)	399.7 V	0.45 V (0.11%)	32.8 W	✓ OK (≤3%)
300 mm²	477 A	372 A	0.22 V (0.05%)	399.8 V	0.36 V (0.09%)	26.2 W	✓ OK (≤3%)
400 mm²	570 A	445 A	0.16 V (0.04%)	399.8 V	0.27 V (0.07%)	19.7 W	✓ OK (≤3%)

Til 70 Ampere over 25 meter ved 400V anbefales 16 mm² kobberkabel (spændingsfald 4.05V / 1.01%).

Det svarer til 48.5 kW med en anbefalet sikring på 70A.