550 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 550 A over 400 m (1312.3 ft).
Copper Cable (≤3% Drop)400 mm²Drop: 20.39V (2.95%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 33.63V (4.87%)
Voltage at Load669.6 VLine Loss: 19420.5 W
Max Power & Breaker657.31 kW600A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 550A 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 | 5436.33 V (787.87%) | 0.0 V | 8967.4 V (1299.62%) | 5178800.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 3261.8 V (472.72%) | 0.0 V | 5380.44 V (779.77%) | 3107280.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2038.62 V (295.45%) | 0.0 V | 3362.78 V (487.36%) | 1942050.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1359.08 V (196.97%) | 0.0 V | 2241.85 V (324.91%) | 1294700.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 815.45 V (118.18%) | 0.0 V | 1345.11 V (194.94%) | 776820.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 509.66 V (73.86%) | 180.3 V | 840.69 V (121.84%) | 485512.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 326.18 V (47.27%) | 363.8 V | 538.04 V (77.98%) | 310728.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 232.99 V (33.77%) | 457.0 V | 384.32 V (55.7%) | 221948.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 163.09 V (23.64%) | 526.9 V | 269.02 V (38.99%) | 155364.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 116.49 V (16.88%) | 573.5 V | 192.16 V (27.85%) | 110974.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 85.84 V (12.44%) | 604.2 V | 141.59 V (20.52%) | 81770.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 67.95 V (9.85%) | 622.0 V | 112.09 V (16.25%) | 64735.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 54.36 V (7.88%) | 635.6 V | 89.67 V (13.0%) | 51788.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 44.08 V (6.39%) | 645.9 V | 72.71 V (10.54%) | 41990.3 W | Drop High |
| 240 mm² | 415 A | 324 A | 33.98 V (4.92%) | 656.0 V | 56.05 V (8.12%) | 32367.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 27.18 V (3.94%) | 662.8 V | 44.84 V (6.5%) | 25894.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 20.39 V (2.95%) | 669.6 V | 33.63 V (4.87%) | 19420.5 W | ✓ OK (≤3%) |
FAQ — 550 Amp Cable Size at 400 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 550A at 400 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 400m at 690V (voltage drop: 20.39V or 2.95%).
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 · 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)