Three-phase electric motor: 3LC-355M1-6, 160 kW
| Basic technical data | |
| Motor type | 3LC-355M1-6 |
| Rated power (kW) | 160 |
| Frame size (mm) | 355 |
| Number of poles | 6 |
| Rated speed (rpm) | 990 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 400/690 |
| Connection | △/Y |
| Rated current 400 V (A) | 281 |
| Rated current 690 V (A) | 162,90 |
| Efficiency at 100% load (%) | 95,6 |
| Efficiency class | IE3 |
| Power factor at 100% load | 0,86 |
| Starting and torque characteristics | |
| Locked-rotor torque ratio (LRT/RLT) | 1,8 |
| Breakdown torque ratio (BDT/RLT) | 2 |
| Locked-rotor current ratio (LRA/RLA) | 6,8 |
| Rotor moment of inertia (kg·m²) | 10,5925 |
| Applicable standards | |
| Specification | IEC60034-1 |
| Testing | IEC60034-2 |
| Noise | IEC60034-9 |
| Vibration | IEC60034-14 |
| Construction and operating data | |
| Mounting arrangement | IM B3, B5, B35, V1 |
| Duty type | S1 (S2, S3, S4 – S9 optional) |
| Load type | Parabolic or linear curve |
| Degree of protection | IP55 |
| Insulation class | F |
| Temperature rise class | B |
| Cooling method | IC411 |
| Starting method | DOL, VFD, soft starter |
| Direction of rotation | Both |
| Vibration (mm/s) | 2.8 |
| Cable glands | 2-M63X1.5 |
| Operating conditions | |
| Ambient temperature range | -20 to +40°C (-30, +50, +60 optionally) |
| Maximum installation altitude | up to 1000m |
| Packaging and dimensions | |
| Packaging dimensions (mm) | 1607*822*1161 |
| Package weight (kg) | 1502 |
| Bearings and lubrication | |
| DE/NDE bearings | 6322-C3/6322-C3 |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
| Accessories | |
| 3 x PTC thermistor | |
The design of the 3LC PRO motor, model 3LC-355M1-6, gives industrial operations scope to reduce operating costs while preserving the long-term value of the investment. This 6-pole electric motor is designed for applications where stable pulling power, moderate speed and reliable operation over long production cycles matter. In practice, this means less unnecessary downtime, better use of energy and easier integration into existing drive systems.
The IE3 efficiency class reduces energy demand under normal load and helps keep consumption under control even in multi-shift operation. With an output of 160 kW and a 400/690 V supply, operators have a solution that handles steady load without unnecessarily complicating switchboard design or protection sizing. For mechanical engineers and designers, the rated speed of 990 rpm is also important because it fits drives where stronger torque is required rather than high speed.
6-pole electric motor for stable torque in continuous operation
Six poles give this electric motor characteristics that suit applications requiring a smooth start and sensible operating dynamics. With a rated current of △ 400V 281 A and Y 690V 162.9 A, the motor can be integrated into systems with a precisely designed start, while the starting current ratio of 6.8 supports the design of protective devices and starting circuits. A starting torque ratio of 1.8 and breakdown torque ratio of 2 are practical for drives that must not become unnecessarily unstable during starting.
A power factor of 0.86 helps with supply sizing and, together with an efficiency of 95.6%, creates good conditions for economical operation in equipment where the motor runs for many hours each day. A noise level of 85 dB(A) should be taken into account when installing the motor in production halls, especially where the surrounding area forms part of operator routes or planned maintenance areas. This solution suits applications that need a reliable three-phase electric motor for long-term loading.
Robust cast-iron frame increases resistance to vibration and heat
The robust cast-iron frame is particularly important in this model where the motor operates under increased mechanical load and in an environment affected by vibrations from other equipment. Reinforced cast-iron bearing shields and reinforced cast-iron feet improve mounting rigidity, which is beneficial for precise alignment with pumps, gearboxes or fans. For maintenance teams, this means less risk of unwanted movement during installation and better conditions for long bearing life.
DE bearing 6322-C3 and NDE bearing 6322-C3 support stable operation in continuous service. Rotor inertia of 10.593 kg/m² provides designers with an important value for calculating system acceleration and correctly setting control when the motor operates with a larger mechanical load. In this segment, an industrial approach also proves useful in which a 400 V electric motor is assessed not only by its power but also by its behaviour in the specific machine.
Parameters that simplify drive design and installation
Package dimensions of 1607*822*1161 mm and a package weight of 1502 kg must be taken into account during warehouse handling and installation into the technology. The 2-M63X1.5 cable glands simplify supply design and provide sufficient room for sensible cable routing without improvisation at the installation site. For deliveries to medium-sized companies and large factories, it is practical that the motor arrives with data that support rapid incorporation into the project and shorten the time required on site.
ISO certificates are a natural reference point for this type of equipment when checking production processes and repeatability of supply. In practice, this is appreciated by technology specialists who must balance operating reliability, service availability and documentation requirements for internal audits.
11 industrial applications for 3LC PRO in practice
- Main drive for a belt conveyor carrying crushed gravel.
- Drive unit for a screw conveyor in a silo.
- Direct drive for an axial fan in a paint shop.
- Motor for a centrifugal pump in a cooling circuit.
- Drive for a mixer in a concrete plant.
- Drive solution for a raw-material crusher in stone processing.
- Motor for a drum screen in a recycling line.
- Drive for a compressor unit in an industrial hall.
- Motor for an extruder in polymer processing.
- Drive unit for a roller table in metalworking.
- Drive for a pumping station handling process water.
3LC PRO for long cycles, lower losses and fewer service interventions
In applications where long-term motor stability is expected, it is important for the motor to take up the load without unnecessary fluctuations while avoiding excessive maintenance. This is why 3LC PRO is suitable for continuous-duty equipment where the full 160 kW output is used and sensible operating efficiency also matters. With correct mounting and connection design, this three-phase electric motor can support smooth production without disruptive shutdowns.
For purchasing departments and technical teams, it is important that this is a solution that can be incorporated into standardised projects with a clear service plan. If you need a motor for robust use in heavily loaded drives, contact us.