The following table shows the max.
Length form starter of motor to pump in well.
If it used the star-dalta connection to start the motor that the current will reduce √3(1 x 0.58), so the length of cable can increase √3(L x 1.73)than the data in table.
For example in fact the current of submersible pump is lower than the load current 10%,the length of cable can be longer 10% than the data in table.
In order to reduce operating loss as far as possible, selected the cross section can much increase than the data in table. Especially for the condition which operating voltage is lower than the rated voltage.
| Single phase capacitor operating submersible motor in well 220-240V~/50Hz | |||||||
| SIZE | kW | ln(A) | 1.5mm2 | 2.5mm2 | 4mm2 | 6mm2 | 10mm2 |
| 4" | 0.37 | 4.2 | 111 | 185 | 295 | ||
| 0.55 | 4.5 | 80 | 133 | 211 | 315 | ||
| 0.75 | 6 | 58 | 96 | 153 | 229 | 377 | |
| 1.1 | 9 | 48 | 79 | 153 | 190 | 316 | |
| 1.5 | 10.3 | 34 | 57 | 92 | 137 | 228 | |
| 2.2 | 14.6 | 43 | 68 | 102 | 169 | ||
| Three phase asynchronous submersible motor 380-415V~50Hz | ||||||||||
| SIZE | kW | ln(A) | 1.5 mm2 | 2.5 mm2 | 4 mm2 | 6 mm2 | 10 mm2 | 16 mm2 | 25 mm2 | 35 mm2 |
| 4" | 0.37 | 1.4 | 768 | |||||||
| 0.55 | 2.2 | 489 | 811 | |||||||
| 0.75 | 2.3 | 416 | 691 | |||||||
| 1.1 | 3.4 | 281 | 467 | 744 | ||||||
| 1.5 | 4.2 | 219 | 363 | 579 | 862 | |||||
| 2.2 | 5.5 | 153 | 254 | 405 | 605 | 997 | ||||
| 6" | 3 | 7.9 | 113 | 188 | 300 | 447 | 736 | |||
| 4 | 9.6 | 89 | 147 | 235 | 350 | 578 | 909 | |||
| 5.5 | 13.6 | 66 | 19 | 174 | 260 | 417 | 671 | |||
| 7.5 | 17.6 | 49 | 81 | 130 | 193 | 319 | 501 | 748 | ||
| 9.2 | 21.8 | 65 | 103 | 154 | 254 | 40 | 611 | 833 | ||
| 11 | 24.8 | 56 | 89 | 133 | 219 | 345 | 526 | 719 | ||
| 15 | 34 | 66 | 98 | 161 | 254 | 729 | 974 | |||
| 18.5 | 42 | 80 | 132 | 208 | 317 | 432 | ||||