High-Power Torque Motors HT-direct
Lower Operting Costs - Higher Availability
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HT-direct motors are permanent-magnet synchronous motors that can provide high torques at low speeds directly at the driven machine. High efficiencies and good power factors can also be achieved at low speeds as a result of the permanent magnet rotors. |

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The HT-direct motors are offered as a harmonized system together with SINAMICS drive converters. The HT-direct motor / SINAMICS drive converter represents a drive solution with a long service lifetime but with low lifecycle costs and high efficiency for applications with low operating speeds. |

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HT-direct - Customer benefits
- With slow-running drives, the efficiency of the HT-direct motors is approximately 2 to 3 % higher than for similar drive concepts.
For a 1000 kW motor, this results in a saving of 33 kW, which is an annual saving of approximately 15000 € for an operating time of 8 hours per day.
- The multi-pole drive design ensures that the space requirement and mass of the motors are lower than for similar asynchronous
machines. The slow-running motors of the HT-direct series obviate the need for a gearbox in many cases (reduction in engineering, assembly and maintenance outlay, lower investment and lower operating costs).
- Environmentally-friendly system (where applicable, no disposal of gearbox oil is necessary; energy-saving drive
system).
- Efficient, optimally matched drive system, SINAMICS converter and HT-direct motor for operation without encoders.
- Thanks to their long service life (nominal bearing lifetime > 60000 hours), HT-direct motors are maintenance-free and have a high availability especially for applications in which a gearbox can be omitted.
- Customization
HT-direct - Technical data overview
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Brief overview |
| Water-jacket cooled motors |
200 to 2080 kW 6000 to 42000 Nm |
| Forced air cooled motors |
150 to 1250 kW 5000 to 23000 Nm |
| Shaft height |
400, 450, 500 mm |
| Rated speed |
200, 300, 400, 500, 600, 800 min-1 |
| Rated voltage |
400, 460, 690 V |
| Frequency converter |
SINAMICS S120, SINAMICS S150, SINAMICS G130, SINAMICS G150, Operation with and without encoder |
| Degree of protection |
IP55 |
| Cooling method |
IC71W (water-jacket cooled) IC416 (rib-cooled with forced air cooled) |
| Type of construction |
IM B3 |
| Bearing |
Deep-groove ball bearing with grease lubrication and regreasing device |
| Regulations |
IEC, EN, DIN |
HT-direct - Typical applications
Applications where the following are important - high efficiency, low space requirements with low lifecycle costs for the drive solution.The main application areas are as follows
- Paper industry as roller and press drive
- Marine industry as propeller drive (main and auxiliary drives)
- Steel industry for worm drives, servo-press drives and drives for shears
- Plastics industry as drive for extruder worms, foil-drawing machines
- Crane industry for the widest range of applications
- Sugar industry for sugar centrifuges
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