High-Power Torque Motors HT-direct

Lower Operting Costs - Higher Availability

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.
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.

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

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