Design features
The motor belongs to the series of highly efficient three-phase asynchronous machines YE3 (energy efficiency class IE3), made according to the IEC standard, has a frame No. 180M, 4 poles, rated power 18.5 kW, rated voltage 660 V, frequency 50 Hz, operating mode S1 (constant).
1. Housing and covers
Made of high-strength cast iron with reinforced cooling fins, they have high rigidity, low vibration, good heat dissipation and resistance to deformation. Provide high accuracy of stator and rotor alignment.
2. Stator and rotor
The stator is made of high-quality low-loss cold-rolled silicon steel. The winding is made using an F class insulation system (155℃C) with vacuum impregnation with varnish, which increases moisture resistance, durability and reliability. The rotor is a cast aluminized squirrel cage, with high precision dynamic balancing, stable starting characteristics and low additional losses.
3. Cooling and protection
Cooling – IC411 (self-ventilated) with built-in fan, no external cooling required. Protection℃– IP55 (complete protection against dust and splashing water from any direction), suitable for dusty and humid industrial environments.
4. Bearings and lubrication
Highly reliable, low-noise bearings with long-term lubrication are installed, designed for long-term continuous operation. The bearing units are sealed and protected from dust and lubricant leakage.
5. IM V1 installation design
Vertical installation of IM V1 (shaft down, with flange and legs) ensures precise alignment, high stability, and ease of installation. Ideal for driving pumps, fans and other equipment with a vertical layout.
6. Terminal box
Located on top, sealed, with convenient access to the terminals. It is possible to connect “star” or “delta” for a 660 V network. The terminals are heat-resistant, the contact is reliable.

Product advantages
1. High energy efficiency IE3
Complies with national standard GB18613, class IE3. Compared to conventional engines, the efficiency is 3–8% higher, which provides significant energy savings over long-term operation and complies with the “double carbon” policy.
2. Special version for 660 V
Designed for 660 V industrial networks, with the same power the current is lower, line losses are lower, and the voltage drop is negligible. Ideal for mining, petroleum, chemical and metallurgical plants with remote power supply.
3. High reliability and durability
Class F insulation system with class B heating control, large heat reserve. The cast iron body is resistant to vibrations and shock loads. The engine is designed for round-the-clock continuous operation.
4. Resistance to harsh conditions
Self-ventilated design IC411, IP55 protection, resistance to dust, moisture, splashes and mildly aggressive environments. Suitable for most industrial sectors.
5. Ease of installation and replacement
The design of IM V1 complies with IEC standards, the dimensions are unified. Replacing old engines is possible without altering the foundation, which reduces the time and cost of modernization.
6. Low noise and vibration
Optimized electromagnetic design and fan shape reduce electromagnetic and aerodynamic noise. High balancing accuracy ensures smooth running and protects driven equipment.
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