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

Kabeltværsnit for 40 Ampere ved 80 Meter (400V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 40 A over 80 m ved 400V.

Copper Cable (≤3% Drop)10 mm²Drop: 11.86V (2.97%)

Aluminum Cable (≤3% Drop)25 mm²Drop: 7.83V (1.96%)

Voltage at Load388.1 VLine Loss: 821.8 W

Max Power & Breaker27.71 kW40A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 40A at 80m

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	79.07 V (19.77%)	320.9 V	130.43 V (32.61%)	5478.4 W	Drop High
2.5 mm²	24 A	18 A	47.44 V (11.86%)	352.6 V	78.26 V (19.57%)	3287.0 W	Drop High
4 mm²	32 A	25 A	29.65 V (7.41%)	370.3 V	48.91 V (12.23%)	2054.4 W	Drop High
6 mm²	41 A	32 A	19.77 V (4.94%)	380.2 V	32.61 V (8.15%)	1369.6 W	~ ≤5%
10 mm²	57 A	44 A	11.86 V (2.97%)	388.1 V	19.57 V (4.89%)	821.8 W	✓ OK (≤3%)
16 mm²	76 A	59 A	7.41 V (1.85%)	392.6 V	12.23 V (3.06%)	513.6 W	✓ OK (≤3%)
25 mm²	101 A	78 A	4.74 V (1.19%)	395.3 V	7.83 V (1.96%)	328.7 W	✓ OK (≤3%)
35 mm²	125 A	97 A	3.39 V (0.85%)	396.6 V	5.59 V (1.4%)	234.8 W	✓ OK (≤3%)
50 mm²	151 A	118 A	2.37 V (0.59%)	397.6 V	3.91 V (0.98%)	164.4 W	✓ OK (≤3%)
70 mm²	192 A	150 A	1.69 V (0.42%)	398.3 V	2.8 V (0.7%)	117.4 W	✓ OK (≤3%)
95 mm²	232 A	181 A	1.25 V (0.31%)	398.8 V	2.06 V (0.51%)	86.5 W	✓ OK (≤3%)
120 mm²	269 A	210 A	0.99 V (0.25%)	399.0 V	1.63 V (0.41%)	68.5 W	✓ OK (≤3%)
150 mm²	309 A	241 A	0.79 V (0.2%)	399.2 V	1.3 V (0.33%)	54.8 W	✓ OK (≤3%)
185 mm²	353 A	275 A	0.64 V (0.16%)	399.4 V	1.06 V (0.26%)	44.4 W	✓ OK (≤3%)
240 mm²	415 A	324 A	0.49 V (0.12%)	399.5 V	0.82 V (0.2%)	34.2 W	✓ OK (≤3%)
300 mm²	477 A	372 A	0.4 V (0.1%)	399.6 V	0.65 V (0.16%)	27.4 W	✓ OK (≤3%)
400 mm²	570 A	445 A	0.3 V (0.07%)	399.7 V	0.49 V (0.12%)	20.5 W	✓ OK (≤3%)

Til 40 Ampere over 80 meter ved 400V anbefales 10 mm² kobberkabel (spændingsfald 11.86V / 2.97%).

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