Electric motor 7,5 kW, 1450 rpm, 400 V, 1AL-132M-4

Electric motor 1AL-132M-4 for operations where smooth starting and a long duty cycle are important

Electric motor 1AL-132M-4 is designed for technologies in which power is not transmitted only for a short time, but remains in operation during longer working periods. The output of 7.5 kW, rated voltage of 400/690 V, connection Delta/Y and rated speed of 1450 rpm at a frequency of 50 Hz create a reliable basis for equipment that needs dependable operation without unnecessary fluctuations. The motor operates in a 4-pole design and is ready for stable industrial use in technologies where the drive is a natural part of the daily production rhythm.

In practice, this model is used on conveyor lines, pumping sets, fan units, mixing technologies, packing and filling lines, dosing equipment, extraction systems, sorting workplaces, handling modules, recycling lines and also in machines where the material is moved or processed in a regular cycle. In such applications it is often crucial that the motor can move after start-up into steady operation and maintain it even under longer load. That is why this model is suitable where the equipment must work reliably throughout the entire shift, without unwanted instability in power transmission.

Behaviour during start-up and under load

For an industrial motor of this class, not only the output itself matters, but also how it behaves at the moment of start and during transition into operating mode. The rated current is 14.8 A at 400 V and 8.58 A at 690 V, which is important when designing the power supply, protection and when integrating it into a control cabinet. The ratio of starting torque of 2.3, the ratio of breakdown torque of 2.3 and the ratio of starting current of 7 create the basis for a clear start-up in equipment that is started repeatedly or operates under regular load. In operation, this means a more confident start on pumps, fans, conveyors and mixing units, where predictable behaviour without unnecessary shocks is expected from the drive.

The motor is intended for a load type with a parabolic or linear load characteristic, so it is well suited to technologies where resistance during the operating cycle changes according to flow, pressure, mechanism movement or the nature of the processed material. Efficiency of 87 % and power factor of 0.84 support a balanced operating mode in equipment where the drive runs continuously or is engaged in a regular production cycle. Also important is the rotor moment of inertia of 0.0296 kg·m², which helps to maintain a reliable response in assemblies with repeated starts, longer engagements or regular material transfer.

Mechanical design and mounting context

This electric motor belongs to the design with a shaft height of 132 mm, which corresponds to equipment where fixed mounting and regular working load are already expected. On both the DE and NDE sides, 6308-2Z bearings are fitted and lubrication is provided by No. 2 lithium-based grease in the relevant temperature class. Balancing with a half key supports smooth running when fitting pulleys, couplings and other power transmission elements, which is important for the stability of the whole assembly and for the long-term reliability of the mechanical connection.

The motor can rotate in either direction, which extends application possibilities in reversing mechanisms, in bidirectional feeds and in units where the working direction changes according to the phase of the process. Practical features of the design also include 2-M32X1.5 cable glands. For handling, the packed weight of 55 kg and packed dimensions of 540 × 290 × 340 mm help with storage planning, transport and service replacement.

Conditions the motor is prepared for

An industrial drive must operate reliably even in environments where dust, higher temperature or regular cleaning of the equipment are present. 1AL-132M-4 has IP55 protection, which helps protect internal parts against dust and water splashes. In conveying technologies, packaging, air handling and pumping applications, this is a practical feature with direct operational significance. A stable thermal regime is supported by IC411 cooling. The motor uses insulation class F and temperature rise B, and is intended for an ambient temperature of up to +65 °C and an altitude of up to 1000 m.

A vibration velocity of 2.8 mm/s in class A and noise of 71 dB(A) support a balanced mechanical performance. In operations where several drives work alongside each other, this is an important element of the stability of the whole technology.

Control and operating options in the 1AL OPTIMAL series

The motor is suitable for DOL starting, for control by a frequency converter and also for a soft starter. This makes it possible to adapt the start-up and operation to the character of the specific equipment, from simple direct start to gentler control according to the working process. The service factor of 1.0 and operating modes S1, S2, S3, S4-S9 provide scope for continuous operation as well as intermittent cycles. The 1AL-132M-4 model belongs to the 1AL OPTIMAL series, which is popular for its very good value for money, fast commissioning and wide mounting options including IM B3, IM B35, IM B5, IM B14, IM B34 designs. Where a reliable electric motor with an output of 7.5 kW is needed for regular and long-term industrial operation, this is a professional solution with solid technical backing.