650 Amp Cable Size at 400 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 650 A over 400 m (1312.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 12.04V (1.75%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 39.74V (5.76%)
Voltage at Load678.0 VLine Loss: 13562.2 W
Max Power & Breaker776.82 kW700A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 650A at 400m
| 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 | 6424.75 V (931.12%) | 0.0 V | 10597.84 V (1535.92%) | 7233200.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 3854.85 V (558.67%) | 0.0 V | 6358.7 V (921.55%) | 4339920.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2409.28 V (349.17%) | 0.0 V | 3974.19 V (575.97%) | 2712450.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1606.19 V (232.78%) | 0.0 V | 2649.46 V (383.98%) | 1808300.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 963.71 V (139.67%) | 0.0 V | 1589.68 V (230.39%) | 1084980.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 602.32 V (87.29%) | 87.7 V | 993.55 V (143.99%) | 678112.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 385.49 V (55.87%) | 304.5 V | 635.87 V (92.16%) | 433992.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 275.35 V (39.91%) | 414.7 V | 454.19 V (65.83%) | 309994.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 192.74 V (27.93%) | 497.3 V | 317.94 V (46.08%) | 216996.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 137.67 V (19.95%) | 552.3 V | 227.1 V (32.91%) | 154997.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 101.44 V (14.7%) | 588.6 V | 167.33 V (24.25%) | 114208.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 80.31 V (11.64%) | 609.7 V | 132.47 V (19.2%) | 90415.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 64.25 V (9.31%) | 625.8 V | 105.98 V (15.36%) | 72332.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 52.09 V (7.55%) | 637.9 V | 85.93 V (12.45%) | 58647.6 W | Drop High |
| 240 mm² | 415 A | 324 A | 40.15 V (5.82%) | 649.8 V | 66.24 V (9.6%) | 45207.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 32.12 V (4.66%) | 657.9 V | 52.99 V (7.68%) | 36166.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 24.09 V (3.49%) | 665.9 V | 39.74 V (5.76%) | 27124.5 W | Drop High |
FAQ — 650 Amp Cable Size at 400 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 650A at 400 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 650A over 400m at 690V (voltage drop: 12.04V or 1.75%).
What is the power capacity of 650A at 690V?
At unity power factor, 650A at 690V supports 776.82 kW with a standard 700A circuit breaker.
Related Lengths & Currents (690V)
650A · 5m (690V)650A · 10m (690V)650A · 15m (690V)650A · 20m (690V)650A · 25m (690V)650A · 30m (690V)650A · 35m (690V)650A · 40m (690V)650A · 45m (690V)650A · 50m (690V)650A · 60m (690V)650A · 70m (690V)10A · 400m (690V)16A · 400m (690V)20A · 400m (690V)25A · 400m (690V)32A · 400m (690V)40A · 400m (690V)50A · 400m (690V)63A · 400m (690V)80A · 400m (690V)100A · 400m (690V)125A · 400m (690V)160A · 400m (690V)200A · 400m (690V)