1. Fan ﹛ 2. Observation hole ﹛ 3. Upper respirator ﹛ 4. Excitation coil ﹛ 5. Shell ﹛ 6. Rotor ﹛ 7. Stator ﹛ 8. Lower respirator
40 air-cooled electromagnetic eddy current brake technical parameters
|
Torque (at 50r/min) |
50000N﹞M |
|
Drilling depth (using 4 1/2" drill pipe) |
4000m |
|
Working principle |
Induction eddy current brake |
|
Number of coils |
4 |
|
Rated resistance of each coil (20⊥) |
7.6次㊣10%次 |
|
Coil insulation grade |
Class H |
|
Excitation current |
37A DC |
|
Excitation power |
10KW |
|
Required cooling air volume |
6000m3/h |
|
The highest air outlet temperature (when the inlet air temperature is 42∼C) |
72⊥ |
|
Weight |
6100kg |
Technical parameters of 50 air-cooled electromagnetic eddy current brake
| Torque (at 50r/min) | 75000N﹞M |
|
Drilling depth (using 4 1/2" drill pipe) |
5000m |
|
Working principle |
Induction eddy current brake |
|
Number of coils |
4 |
|
Rated resistance of each coil (20⊥) |
6.63次㊣10%次 |
|
Coil insulation grade |
Class H |
|
Excitation current |
45A DC |
|
Excitation power |
12KW |
|
Required cooling air volume |
12000m3/h |
|
The highest air outlet temperature (when the inlet air temperature is 42∼C) |
72⊥ |
|
Weight |
7600kg |
Technical parameters of 70 water-cooled electromagnetic eddy current brake
| Torque (at 50r/min) | 120000N﹞M |
|
Drilling depth (using 4 1/2" drill pipe) |
4500-7000m |
|
Working principle |
Induction eddy current brake |
|
Number of coils |
4 |
|
Rated resistance of each coil (20⊥) |
16.46㊣10%次 |
|
Coil insulation grade |
Class H |
|
Excitation current |
84A DC |
|
Excitation power |
23.5KW |
|
Required cooling water |
560L/min |
|
Maximum water outlet temperature (when the water inlet temperature is 42⊥) |
72⊥ |
|
Weight |
12000kg |
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