650 Amp Cable Size at 80 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 80 m (262.5 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 2.41V (0.35%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 7.95V (1.15%)
Voltage at Load687.6 VLine Loss: 2712.4 W
Max Power & Breaker776.82 kW700A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 650A 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 | 1284.95 V (186.22%) | 0.0 V | 2119.57 V (307.18%) | 1446640.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 770.97 V (111.73%) | 0.0 V | 1271.74 V (184.31%) | 867984.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 481.86 V (69.83%) | 208.1 V | 794.84 V (115.19%) | 542490.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 321.24 V (46.56%) | 368.8 V | 529.89 V (76.8%) | 361660.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 192.74 V (27.93%) | 497.3 V | 317.94 V (46.08%) | 216996.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 120.46 V (17.46%) | 569.5 V | 198.71 V (28.8%) | 135622.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 77.1 V (11.17%) | 612.9 V | 127.17 V (18.43%) | 86798.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 55.07 V (7.98%) | 634.9 V | 90.84 V (13.17%) | 61998.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 38.55 V (5.59%) | 651.5 V | 63.59 V (9.22%) | 43399.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 27.53 V (3.99%) | 662.5 V | 45.42 V (6.58%) | 30999.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 20.29 V (2.94%) | 669.7 V | 33.47 V (4.85%) | 22841.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 16.06 V (2.33%) | 673.9 V | 26.49 V (3.84%) | 18083.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 12.85 V (1.86%) | 677.2 V | 21.2 V (3.07%) | 14466.4 W | Drop High |
| 185 mm² | 353 A | 275 A | 10.42 V (1.51%) | 679.6 V | 17.19 V (2.49%) | 11729.5 W | Drop High |
| 240 mm² | 415 A | 324 A | 8.03 V (1.16%) | 682.0 V | 13.25 V (1.92%) | 9041.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 6.42 V (0.93%) | 683.6 V | 10.6 V (1.54%) | 7233.2 W | Drop High |
| 400 mm² | 570 A | 445 A | 4.82 V (0.7%) | 685.2 V | 7.95 V (1.15%) | 5424.9 W | Drop High |
FAQ — 650 Amp Cable Size at 80 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 650A at 80 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 80m at 690V (voltage drop: 2.41V or 0.35%).
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 · 80m (690V)16A · 80m (690V)20A · 80m (690V)25A · 80m (690V)32A · 80m (690V)40A · 80m (690V)50A · 80m (690V)63A · 80m (690V)80A · 80m (690V)100A · 80m (690V)125A · 80m (690V)160A · 80m (690V)200A · 80m (690V)