650 Amp Cable Size at 300 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 300 m (984.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 9.04V (1.31%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 29.81V (4.32%)
Voltage at Load681.0 VLine Loss: 10171.7 W
Max Power & Breaker776.82 kW700A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 650A at 300m
| 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 | 4818.57 V (698.34%) | 0.0 V | 7948.38 V (1151.94%) | 5424900.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2891.14 V (419.01%) | 0.0 V | 4769.03 V (691.16%) | 3254940.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1806.96 V (261.88%) | 0.0 V | 2980.64 V (431.98%) | 2034337.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 1204.64 V (174.59%) | 0.0 V | 1987.1 V (287.98%) | 1356225.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 722.78 V (104.75%) | 0.0 V | 1192.26 V (172.79%) | 813735.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 451.74 V (65.47%) | 238.3 V | 745.16 V (107.99%) | 508584.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 289.11 V (41.9%) | 400.9 V | 476.9 V (69.12%) | 325494.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 206.51 V (29.93%) | 483.5 V | 340.64 V (49.37%) | 232495.7 W | Drop High |
| 50 mm² | 151 A | 118 A | 144.56 V (20.95%) | 545.4 V | 238.45 V (34.56%) | 162747.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 103.25 V (14.96%) | 586.7 V | 170.32 V (24.68%) | 116247.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 76.08 V (11.03%) | 613.9 V | 125.5 V (18.19%) | 85656.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 60.23 V (8.73%) | 629.8 V | 99.35 V (14.4%) | 67811.2 W | Drop High |
| 150 mm² | 309 A | 241 A | 48.19 V (6.98%) | 641.8 V | 79.48 V (11.52%) | 54249.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 39.07 V (5.66%) | 650.9 V | 64.45 V (9.34%) | 43985.7 W | Drop High |
| 240 mm² | 415 A | 324 A | 30.12 V (4.36%) | 659.9 V | 49.68 V (7.2%) | 33905.6 W | Drop High |
| 300 mm² | 477 A | 372 A | 24.09 V (3.49%) | 665.9 V | 39.74 V (5.76%) | 27124.5 W | Drop High |
| 400 mm² | 570 A | 445 A | 18.07 V (2.62%) | 671.9 V | 29.81 V (4.32%) | 20343.4 W | Drop High |
FAQ — 650 Amp Cable Size at 300 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 650A at 300 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 300m at 690V (voltage drop: 9.04V or 1.31%).
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 · 300m (690V)16A · 300m (690V)20A · 300m (690V)25A · 300m (690V)32A · 300m (690V)40A · 300m (690V)50A · 300m (690V)63A · 300m (690V)80A · 300m (690V)100A · 300m (690V)125A · 300m (690V)160A · 300m (690V)200A · 300m (690V)