Atlas Copco GA 30+ Instruction Book page 173

Instruction book
Maximum allowed current in function of the ambient temperature for installation method F
conductor temperature 70°C
Cable section
25 mm²
35 mm²
50 mm²
70 mm²
95 mm²
120 mm²
150 mm²
185 mm²
240 mm²
300 mm²
400 mm²
Maximum allowed current in function of the ambient temperature for installation method F,
conductor temperature 90°C
Cable section
25 mm²
35 mm²
50 mm²
70 mm²
95 mm²
120 mm²
150 mm²
185 mm²
240 mm²
300 mm²
400 mm²
Calculation method for IEC:
• Single supply cables (3 phases + PE - configuration (1)):
• Add 10 % to the total compressor current (I
• Install the prescribed fuse on each cable
• Parallel supply cable (2 x 3 phases + PE - configuration (2)):
2920 7180 30
Installation method F according table B.52.1.
Single-core cables, touching in free air
Clearance to wall not less than one cable diameter
Ambient temperature
30 °C 40 °C
< 110 A < 96 A
< 137 A < 119 A
< 167 A < 145 A
< 216 A < 188 A
< 264 A < 230 A
< 308 A < 268 A
< 356 A < 310 A
< 409 A < 356 A
< 485 A < 422 A
< 561 A < 488 A
< 659 A < 573 A
Ambient temperature
30 °C 40 °C
< 135 A < 123 A
< 169 A < 154 A
< 207 A < 188 A
< 268 A < 244 A
< 328 A < 298 A
< 383 A < 349 A
< 444 A < 404 A
< 510 A < 464 A
< 607 A < 552 A
< 703 A < 639 A
< 823 A < 749 A
45 °C 50 °C
< 87 A < 78 A
< 108 A < 97 A
< 132 A < 119 A
< 171 A < 153 A
< 209 A < 187 A
< 243 A < 219 A
< 281 A < 253 A
< 323 A < 290 A
< 383 A < 344 A
< 443 A < 398 A
< 518 A < 467 A
45 °C 50 °C
< 117 A < 110 A
< 147 A < 139 A
< 180 A < 170 A
< 233 A < 220 A
< 285 A < 269 A
< 333 A < 314 A
< 386 A < 364 A
< 443 A < 418 A
< 528 A < 498 A
< 611 A < 576 A
< 716 A < 674 A
Pack or I FF from the tables)
tot tot
55 °C
< 67 A
< 84 A
< 102 A
< 132 A
< 161 A
< 188 A
< 217 A
< 249 A
< 296 A
< 342 A
< 402 A
55 °C
< 103 A
< 128 A
< 157 A
< 204 A
< 249 A
< 291 A
< 337 A
< 388 A
< 461 A
< 534 A
< 625 A
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