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DQ20B-JH
DQ20B-JH is a top drive system with AC variable - frequency controlled drive, equipped with induction motor with a continuous rated power 250 kW ( 335 hp).
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| Drive type |
AC VFD |
| Rated drilling depth, m (114 mm drill pipe) |
2 000 |
| Rated load capacities, KN (ton) |
1 330 ( 138 ) |
| Power supply, VAC/HZ |
600 / 50 HZ or 60 HZ |
| Rated current, A |
336 |
| Maximum current, A |
504 |
| Rated power (continuous), kW (hp) |
250 (335) |
| Rotary speed, r/min |
0～180 |
| Drilling torque (continuous), kNm |
26 |
| Max. torque of break out, kNm |
39 |
| Backup tong range, Ø, mm |
96～197 |
| Hydraulic system working pressure, MPa |
16 |
| Rated pressure of IBOP, MPa |
70 |
| Mud circulating diameter, mm |
62 |
| Rated circulating pressure, MPa |
35 |
| Max. distance between main shaft center and the front end, mm |
514 |
| Main body height, m |
4.0 |
| Working height, m |
4.4 |
| Ambient temperature |
-45℃ ～+55℃ |
| Main body weight, t |
6.5 |
| Measurements body height, mm |
4072 × 1200 × 1300 |
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