Three-phase electric motor: 1AL-90S-2, 1,5 kW
| Basic technical data | |
| Motor type | 1AL-90S-2 |
| Rated power (kW) | 1,5 |
| Frame size (mm) | 90 |
| Number of poles | 2 |
| Rated speed (rpm) | 2850 |
| Frequency (Hz) | 50 |
| Electrical parameters | |
| Rated voltage (V) | 230/400 |
| Connection | △/Y |
| Rated current 230 V (A) | 5,72 |
| Rated current 400 V (A) | 3,29 |
| Efficiency at 100% load (%) | 78,5 |
| Power factor at 100% load | 0,84 |
| Starting and torque characteristics | |
| Locked-rotor torque ratio (LRT/RLT) | 2,3 |
| Breakdown torque ratio (BDT/RLT) | 2,2 |
| Locked-rotor current ratio (LRA/RLA) | 7 |
| Rotor moment of inertia (kg·m²) | 0,0029 |
| Applicable standards | |
| Specification | IEC60034-1 |
| Testing | IEC60034-2 |
| Noise | IEC60034-9 |
| Vibration | IEC60034-14 |
| Construction and operating data | |
| Mounting arrangement | B3, B5, B14, B14B, B34, B35 |
| 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-M25X1.5 |
| Operating conditions | |
| Ambient temperature range | +65°C |
| Maximum installation altitude | up to 1000m |
| Packaging and dimensions | |
| Packaging dimensions (mm) | 355*210*270 |
| Package weight (kg) | 13 |
| Bearings and lubrication | |
| DE/NDE bearings | 6205-2Z/6205-2Z |
| Lubricant | Lithium-based grease No. 2 (temperature class) |
Electric motor 1AL-90S-2 1.5 kW for operations where fast running, a compact frame and reliable deployment come together
Electric motor 1AL-90S-2 from VYBO Electric is a three-phase asynchronous electric motor designed for industrial technologies that need a reliable drive with a fast working rhythm and a durable design. The output of 1.5 kW, 2-pole construction and rated speed of 2850 rpm at a frequency of 50 Hz make this model an excellent choice for equipment where brisk mechanical performance, stable operation and good readiness for everyday load are expected. The rated voltage of 230/400 V and the Delta/Star connection make it easy to integrate into standard three-phase systems.
The 90 frame size already provides a noticeably more solid base for technological units in which the drive must handle regular work throughout the entire shift while still maintaining sensible installation dimensions. This is precisely where the practical value of the motor shows, as it combines high speed, compact industrial design and operational reliability in an environment where long-term dependability is expected from the technology.
Strong working rhythm for dynamic technologies
With the 1AL-90S-2 model, what matters most is how it behaves in real operation. The rated current is 5.72 A at 230 V and 3.29 A at 400 V, which provides a solid basis for correct electrical sizing. The motor operates with a power factor of 0.84 and an efficiency of 78.5 %, so it offers a balanced ratio between output, speed and usability in industrial deployment.
Starting parameters are also very important. A starting torque ratio of 2.3, a breakdown torque ratio of 2.2 and a starting current ratio of 7 create a good basis for equipment that needs reliable start-up and stable behaviour under changing load. In technologies where start, steady running and repeated restart alternate, the motor’s predictable behaviour is very important for the smooth running of the whole operation.
Where this motor delivers the greatest benefit
The output of 1.5 kW and speed of 2850 rpm make this model ideal for equipment that needs a brisk drive and stable working dynamics. It is well suited to conveyor systems, material feeders, packaging lines, filling modules, dosing stations and sorting mechanisms. It also has its place in fan assemblies, extraction systems, circulation pumps, industrial mixers with light to medium load, labelling machines, assembly lines, handling workplaces and service technology units.
In such applications, it is important that the motor does not complicate the machine design while still providing enough working reserve. The 1AL-90S-2 model fits well into technologies where space, reliability, speed and everyday operational load have to be addressed as one whole. As a result, it is suitable for a wide range of industrial sectors, from production lines to technical and service systems.
Operating modes close to real deployment
The motor is suitable for S1, S2, S3 and S4-S9 operating modes, so it can be used in continuous operation as well as in processes with intermittent or cyclic running. The service factor of 1.0 corresponds to rated working conditions and the parabolic or linear load characteristic broadens the possibilities for its use in various mechanical tasks. In practice, this means the motor can reliably work in equipment with different resistance profiles during the working cycle.
This operational flexibility is important in modern technologies, where transport, dosing, extraction, mixing or material transfer are often combined at different intervals. If the entire system is to operate smoothly, the drive must manage regular work without instability and without unnecessary demands on complicated integration.
Durable industrial design for everyday reliability
Electric motor 1AL-90S-2 is built in an aluminium frame and operates with IP55 protection, which provides protection against dust and splashing water. In workshops, production halls, technical rooms and industrial operations, this is a very important feature. Cooling IC411 supports a stable thermal regime during longer operation. Insulation class F and temperature rise B complete the technical basis prepared for regular working deployment.
Running quality is supported by a vibration velocity of 2.8 mm/s in class A and noise level of 72 dB(A). The motor can rotate in either direction, which expands the design possibilities for universal mechanisms or reversing assemblies. Balancing is provided with a half key. On both the DE and NDE sides, bearings 6205-2Z are used and lubrication is provided by No. 2 lithium-based grease, which supports reliable mechanical behaviour during everyday running.
Mounting, compatibility and the 1AL OPTIMAL platform
The motor belongs to the 1AL OPTIMAL series, which is known in industry as a proven platform with excellent value for money, proven quality and high compatibility. The series is available in mounting versions IM B3, IM B35, IM B5, IM B14 and IM B34, which makes it easier to integrate into various types of machines and technological units. Practical benefits also include compatible feet, the option to replace the front cover, a reinforced terminal box, improved IP55 terminal box protection, a steel fan cover and a carefully designed frame to increase cooling efficiency.
The motor is fitted with cable glands 2-M25X1.5. Package dimensions of 355 × 210 × 270 mm, packaged weight of 13 kg and rotor inertia of 0.0029 kg·m² complete the practical picture of handling and starting behaviour. The motor is suitable for starting by the DOL method and, according to the requirements of the technology, also for control by a frequency converter or soft starter. The 1AL-90S-2 therefore represents a reliable choice for industrial drives where dynamics, durability and readiness for regular operation are combined.





