550 Amp Cable Size at 350 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 550 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 17.84V (2.59%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 29.42V (4.26%)
Voltage at Load672.2 VLine Loss: 16992.9 W
Max Power & Breaker657.31 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A at 350m
| 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 | 4756.79 V (689.39%) | 0.0 V | 7846.48 V (1137.17%) | 4531450.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2854.07 V (413.63%) | 0.0 V | 4707.89 V (682.3%) | 2718870.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1783.8 V (258.52%) | 0.0 V | 2942.43 V (426.44%) | 1699293.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 1189.2 V (172.35%) | 0.0 V | 1961.62 V (284.29%) | 1132862.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 713.52 V (103.41%) | 0.0 V | 1176.97 V (170.58%) | 679717.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 445.95 V (64.63%) | 244.1 V | 735.61 V (106.61%) | 424823.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 285.41 V (41.36%) | 404.6 V | 470.79 V (68.23%) | 271887.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 203.86 V (29.55%) | 486.1 V | 336.28 V (48.74%) | 194205.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 142.7 V (20.68%) | 547.3 V | 235.39 V (34.12%) | 135943.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 101.93 V (14.77%) | 588.1 V | 168.14 V (24.37%) | 97102.5 W | Drop High |
| 95 mm² | 232 A | 181 A | 75.11 V (10.89%) | 614.9 V | 123.89 V (17.96%) | 71549.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 59.46 V (8.62%) | 630.5 V | 98.08 V (14.21%) | 56643.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 47.57 V (6.89%) | 642.4 V | 78.46 V (11.37%) | 45314.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 38.57 V (5.59%) | 651.4 V | 63.62 V (9.22%) | 36741.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 29.73 V (4.31%) | 660.3 V | 49.04 V (7.11%) | 28321.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 23.78 V (3.45%) | 666.2 V | 39.23 V (5.69%) | 22657.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 17.84 V (2.59%) | 672.2 V | 29.42 V (4.26%) | 16992.9 W | ✓ OK (≤3%) |
FAQ — 550 Amp Cable Size at 350 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 550A at 350 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 550A over 350m at 690V (voltage drop: 17.84V or 2.59%).
What is the power capacity of 550A at 690V?
At unity power factor, 550A at 690V supports 657.31 kW with a standard 600A circuit breaker.
Related Lengths & Currents (690V)
550A · 5m (690V)550A · 10m (690V)550A · 15m (690V)550A · 20m (690V)550A · 25m (690V)550A · 30m (690V)550A · 35m (690V)550A · 40m (690V)550A · 45m (690V)550A · 50m (690V)550A · 60m (690V)550A · 70m (690V)10A · 350m (690V)16A · 350m (690V)20A · 350m (690V)25A · 350m (690V)32A · 350m (690V)40A · 350m (690V)50A · 350m (690V)63A · 350m (690V)80A · 350m (690V)100A · 350m (690V)125A · 350m (690V)160A · 350m (690V)200A · 350m (690V)