As a junior content writer at HEM Motor, she prepares content on the fundamentals of asynchronous motors and on purchasing and procurement processes. With about three years of experience, she focuses on explaining the subject in its simplest form to readers buying a motor for the first time. Step by step she explains the operating logic of the three-phase asynchronous motor, the relationship between pole count and speed, star and delta connection types, and how to read the rated values on the nameplate. From the buyer's perspective she covers what to watch for when selecting the right motor and which technical details to ask about during procurement. With a new-generation viewpoint she simplifies technical topics; drawing on the knowledge of the manufacturing and technical teams, she aims to offer practical, understandable and accurate content that helps readers confidently choose the motor suited to their needs.
Two-pole asynchronous motors rotate at approximately 3000 RPM synchronous speed on a 50 Hz grid, which makes them the fastest-running members of the electric motor family. High spe... More Details
The quiet, cool and efficient operation of an asynchronous motor is the result not only of the materials used, but also of how the winding is placed inside the stator. The angular ... More Details
When buying an asynchronous motor, most purchasers look at power (kW), speed and mounting type. Yet one of the design decisions that quietly determines a motor's efficiency, heatin... More Details
At the heart of every asynchronous motor lies a component that is often overlooked yet underpins all torque production: the rotor cage and the rotor end ring at each of its two end... More Details
Direct online starting of large asynchronous motors draws an inrush current of 6-8 times the rated current from the grid. This high current causes voltage dips on the grid, fuse tr... More Details
Momentary voltage drops on the power grid are among the most insidious problems faced by industrial facilities. A nearby short circuit, the starting of a large motor, or a sudden l... More Details
Starting an asynchronous motor directly from the grid (DOL — Direct On Line) is the simplest and most economical starting method. The motor is connected directly to the grid with a... More Details
In applications such as cranes, hoists, automatic gates, machine tool tables and direction-changing mixers, an asynchronous motor is forced to run forward and backward continuously... More Details
When an asynchronous motor starts directly from the grid, it draws, for a brief moment, a starting current several times the rated current. As this high current flows through cable... More Details
The rotor of an asynchronous electric motor does not stay in the same axial position when stationary and when running. The small back-and-forth movement the rotor can make along th... More Details
Protecting an electric motor correctly determines its life and the continuity of the operation just as much as buying it does. Among the most common causes of failure in asynchrono... More Details
The moment an asynchronous motor (squirrel cage motor) is connected to the grid, it draws a current far above its rated value. This phenomenon, called starting current (inrush curr... More Details
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