IEC Electric Motors – High Efficiency Three-Phase Asynchronous Motors
Founded in 1906, the International Electrotechnical Commission (IEC) is the world’s first international electrical standard‑setting organization, responsible for global standardization within electrical and electronic engineering. It aims to boost international cooperation across electrical, electronic and related technical sectors including standard conformity assessment. Its objectives are to satisfy global market demands, maximize worldwide adoption of its standards and conformity‑assessment programs, improve product quality, advance industrialization efficiency, safeguard human health and safety, and protect the environment.
IEC electric motors are manufactured in full compliance with IEC requirements. As a professional IEC electric motors manufacturer holding CE and UL certifications, we export our motor products to numerous European and American markets. Our main offerings cover IEC‑compliant three‑phase asynchronous motors and derivative AC motors including variable‑frequency speed‑regulated, explosion‑proof and braking types. These IEC electric motors cover power output from 0.18 kW to 375 kW with IP54 and IP55 protection classes and support matching external inverters. Comparable to China GB‑standard motors, they run at 50 Hz with 380 V rated voltage. Corresponding synchronous speeds are 3000 RPM for 2‑pole, 1500 RPM for 4‑pole and 1000 RPM for 6‑pole motors.
Our IEC electric motors series consists of IE2/IE3 high‑efficiency asynchronous motors, variable‑frequency speed‑regulated motors, YB explosion‑proof motors and YD multi‑pole change‑speed motors. Built per IEC dimensional and power specifications, they feature robust cast‑iron housings with IP54 or IP55 enclosure protection.
Motor Technical Characteristics
Frame number: 80‑355
Power: 0.75 kW‑315 kW
Frequency: 50/60 Hz
Pole number: 2/4/6/8/10
Duty: S1 continuous
Protection class: IP54/IP55
Insulation class: F (Class B assessment)
Cooling: IC411
Ambient temperature: ≤40°C
Altitude: ≤1000 m
Voltage: 220V, 380V, 660V, 220/380V, 380/660V
Operation: S1 continuous duty, direct full‑voltage starting permitted
Wiring: Star (Y) for ≤3 kW; Delta (△) for ≥4 kW
Note: Special frequency, voltage and other custom requirements can be stated upon order placement.
Typical applications: pumps, reducers, compressors, fans and other industrial equipment.
Key Features
- High power factor and high efficiency for energy‑saving and eco‑friendly operation
- Compact simple construction for easy installation and maintenance
- Fitted with separate external fan for forced ventilation and superior heat dissipation
Main Motor Production Process
Stator: Housing processing → Sheet stamping → Core assembly → Coil winding → Wire lacing → Varnish dipping and drying
Rotor: Shaft blank machining → Core pressing → Aluminum die‑casting → Rotor shaft fitting → Wire lacing → Varnish dipping and drying → Dynamic balancing
Final assembly: Stator‑rotor fitting → Factory test → Surface painting → Packaging and storage
Application Scenarios
Our IEC electric motors serve a wide range of industries including power generation, mining, steel & metallurgy, petrochemical, water conservancy, transport and building materials. They provide drive power for pumps, machine tools, fans, mills, crushers, rolling mills, compressors and other industrial machinery.
