550 Amp Cable Size at 90 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 90 m (295.3 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 4.59V (0.66%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 7.57V (1.1%)
Voltage at Load685.4 VLine Loss: 4369.6 W
Max Power & Breaker657.31 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A at 90m
| 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 | 1223.17 V (177.27%) | 0.0 V | 2017.67 V (292.42%) | 1165230.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 733.9 V (106.36%) | 0.0 V | 1210.6 V (175.45%) | 699138.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 458.69 V (66.48%) | 231.3 V | 756.62 V (109.66%) | 436961.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 305.79 V (44.32%) | 384.2 V | 504.42 V (73.1%) | 291307.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 183.48 V (26.59%) | 506.5 V | 302.65 V (43.86%) | 174784.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 114.67 V (16.62%) | 575.3 V | 189.16 V (27.41%) | 109240.3 W | Drop High |
| 25 mm² | 101 A | 78 A | 73.39 V (10.64%) | 616.6 V | 121.06 V (17.54%) | 69913.8 W | Drop High |
| 35 mm² | 125 A | 97 A | 52.42 V (7.6%) | 637.6 V | 86.47 V (12.53%) | 49938.4 W | Drop High |
| 50 mm² | 151 A | 118 A | 36.7 V (5.32%) | 653.3 V | 60.53 V (8.77%) | 34956.9 W | Drop High |
| 70 mm² | 192 A | 150 A | 26.21 V (3.8%) | 663.8 V | 43.24 V (6.27%) | 24969.2 W | Drop High |
| 95 mm² | 232 A | 181 A | 19.31 V (2.8%) | 670.7 V | 31.86 V (4.62%) | 18398.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 15.29 V (2.22%) | 674.7 V | 25.22 V (3.66%) | 14565.4 W | Drop High |
| 150 mm² | 309 A | 241 A | 12.23 V (1.77%) | 677.8 V | 20.18 V (2.92%) | 11652.3 W | Drop High |
| 185 mm² | 353 A | 275 A | 9.92 V (1.44%) | 680.1 V | 16.36 V (2.37%) | 9447.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 7.64 V (1.11%) | 682.4 V | 12.61 V (1.83%) | 7282.7 W | Drop High |
| 300 mm² | 477 A | 372 A | 6.12 V (0.89%) | 683.9 V | 10.09 V (1.46%) | 5826.1 W | Drop High |
| 400 mm² | 570 A | 445 A | 4.59 V (0.66%) | 685.4 V | 7.57 V (1.1%) | 4369.6 W | ✓ OK (≤3%) |
FAQ — 550 Amp Cable Size at 90 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 550A at 90 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 90m at 690V (voltage drop: 4.59V or 0.66%).
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 · 90m (690V)16A · 90m (690V)20A · 90m (690V)25A · 90m (690V)32A · 90m (690V)40A · 90m (690V)50A · 90m (690V)63A · 90m (690V)80A · 90m (690V)100A · 90m (690V)125A · 90m (690V)160A · 90m (690V)200A · 90m (690V)