Electric motor 500 kW, 2985 rpm, 400/690 V, 3LC-355LX2B-2

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3LC-355LX2B-2 delivers 500 kW at 2985 rpm in a 355 mm frame for demanding industrial applications. A robust cast-iron frame with reinforced cast-iron bearing shields and reinforced cast-iron feet supports long-term operation. More than 15 years of experience. Read More

Electric motor 3LC355LX-2
Power 500 kW
Nominal voltage 400/690 V
Number of poles 2
Speed 2980 rpm
Frame 355 mm
Frame type cast iron

Current availability: in stock

Delivery: Free

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Three-phase electric motor: 3LC-355LX2B-2, 500 kW

Basic technical data
Motor type 3LC-355LX2B-2
Rated power (kW) 500
Frame size (mm) 355
Number of poles 2
Rated speed (rpm) 2985
Frequency (Hz) 50
Electrical parameters
Rated voltage (V) 400/690
Connection △/Y
Rated current 400 V (A) 819
Rated current 690 V (A) 475
Efficiency at 100% load (%) 95,8
Efficiency class IE3
Power factor at 100% load 0,92
Starting and torque characteristics
Locked-rotor torque ratio (LRT/RLT) 1,4
Breakdown torque ratio (BDT/RLT) 2
Locked-rotor current ratio (LRA/RLA) 7
Rotor moment of inertia (kg·m²) –
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) –
Package weight (kg) 2200
Bearings and lubrication
DE/NDE bearings 6319-C3/6319-C3
Lubricant Lithium-based grease No. 2 (temperature class)
Accessories
3 x PTC thermistor

A power output of 500 kW, rated speed of 2985 rpm and supply voltage of 400/690 V give the 3LC-355LX2B-2 exactly the characteristics required of a 2-pole electric motor in continuous operation. This asynchronous electric motor is designed for situations where the drive is expected to provide stable starting, consistent operation and efficiency that translates into long-term operating costs even under high load.

IE3 efficiency class reduces losses in the normal duty cycle and helps keep energy consumption under control even in applications with a high annual number of operating hours. In large factories and OEM projects, this approach translates into better energy planning, lower thermal stress and more stable operation of the drive technology.

2-pole electric motor for stable performance under high load

The two-pole design supports rapid acceleration to operating speed and is well suited to applications where a direct connection to the technological process is required. A rated current of 819 A at △ 400V and 475 A at Y 690V provides a clear basis for designing switchgear, protection and starting systems in industrial environments.

A starting torque ratio of 1.4, breakdown torque ratio of 2 and starting current ratio of 7 create an operating profile that helps designers estimate drive behaviour during starting and short-term load changes. For operators of large factories, this is particularly important where the motor is connected to lines with high inertia or frequent starts after technological shutdowns.

Robust cast-iron frame withstands industrial operation without compromise

A robust cast-iron frame, reinforced cast-iron bearing shields and reinforced cast-iron feet place this motor in a category designed for tough real-world factory conditions, not just laboratory environments. A noise level of 95 dB(A) corresponds to a power class in which workplace acoustics and suitable mounting of the drive within the overall system must also be considered during design.

The DE bearing 6319-C3 and NDE bearing 6319-C3 support reliable rotor mounting under prolonged load. This makes the motor particularly suitable for assemblies where long service intervals and predictable behaviour in highly utilised production operation are expected from the drive.

Overview of operating values for drive design

A power factor of 0.92 and efficiency of 95.8% give designers the basis for precise sizing of supply conductors and downstream technological units. In practice, this means the asynchronous electric motor can be integrated into the system without unnecessary reserves that would increase both investment and operating costs.

Asynchronous electric motor for lines where continuous operation is decisive

The 3LC PRO model is suitable for production operations where line availability, not just nominal power, is monitored. More than 15 years of experience in the design and supply of industrial motors shows that details such as mounting, starting characteristics, compatibility with the power supply and suitable connection to control technology are decisive.

The 355 mm frame size allows installation in robust assemblies used in heavy manufacturing, large technological units and system deliveries for OEM partners. An IE3 electric motor in this design supports operations where long service life and trouble-free integration into existing systems are expected.

Specific use in industrial technologies

Thanks to its power class and speed of 2985 rpm, the motor is suitable for many applications where high dynamics and reliable maintenance of operating parameters are required.

  • Main drive of a rolling mill in a metallurgical line.
  • Drive unit of a high-capacity fan for industrial extraction.
  • Blower drive in an energy and cogeneration unit.
  • Main drive of a mixer in a chemical production vessel.
  • Drive motor of a pressing line for chipboard processing.
  • Aggregate crusher drive in quarrying and recycling operations.
  • Motor for a compressor unit handling technical gases.
  • Pumping-station drive for process media in production.
  • Main motor of a heavy-belt conveyor in a raw-material warehouse.
  • Extruder drive in plastic-profile production.
  • Motor for a granulation line in polymer processing.
  • Main drive of a drum mixer in food-processing technology.

Drive technology prepared for long-term loading

When designing a new line or replacing an existing drive, it is important to consider how the motor behaves in the actual operating cycle. This 2-pole electric motor combines power, efficiency and robust mechanical construction so that it can be used in environments where downtime has a direct impact on production.

If you need a motor for production technology that requires rapid deployment and reliable performance, order the 3LC-355LX2B-2 today. Current stock availability and fast delivery help shorten the time between design and commissioning.

Choice for OEM projects and large factories

OEM manufacturers of large technological units will particularly appreciate predictable project integration, easier power-distribution planning and consistent behaviour in series assembly. In large factories, the ability to standardise the drive across several lines and keep service logic under control is equally important.

The 3LC PRO model in this configuration delivers efficiency and value for applications where consumption, service life and performance stability are considered together. If your project has a tight schedule, order it without delay so the motor is ready for the next stage of installation and commissioning.

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