Guides & Technical Info

Two electric motors can have the same power, the same speed and the same efficiency; yet one runs flawlessly for years in a dusty crushing plant while the other burns its winding w... More Details

The moment an electric motor is first energized is one of the most demanding moments it experiences throughout its working life. A stationary asynchronous motor draws a current far... More Details

The most critical factor determining the life of an electric motor often comes down to a single, usually invisible variable: winding temperature. As long as the windings stay withi... More Details

Connecting an electric motor to the supply correctly is the first condition for safe and efficient operation. In three-phase asynchronous motors, this connection is made in the ter... More Details

At the heart of every electric motor lies an invisible yet critical boundary between the copper windings and the metal frame: the insulation. This layer, formed by enamel, varnish ... More Details

When an electric motor runs, it does not only produce mechanical power; it also releases heat in the windings, the rotor, and the bearing areas. If this heat is not kept under cont... More Details

One of the most fundamental decisions when selecting a motor to drive a machine is this: should the motor be connected directly, or should a gearbox be placed in between? This choi... More Details

If the heart of an electric motor is the rotating rotor, then the hero that allows that rotor to turn quietly and trouble-free is the bearing. This small part, often overlooked, di... More Details

Whether an electric motor is mounted horizontally or vertically may at first look like nothing more than a layout preference. In reality, this choice directly affects many mechanic... More Details

An induction motor stopping suddenly or failing unexpectedly rarely comes without warning. Before they break down, motors usually give signs: the temperature rises, the noise chang... More Details

One of the most confusing topics you encounter when buying an electric motor is the two different standards that define the motor's frame size: IEC and NEMA. IEC is widespread in E... More Details

Flange-mounted electric motors bolt directly to machines such as pumps, gearboxes and fans, offering a far more compact mounting solution than foot-mounted bodies. The flange face ... More Details

One of the most fundamental questions when designing a drive system is this: AC motor or DC motor? This choice is not merely a technical preference; it shapes the entire life cycle... More Details

When you connect a motor directly to the grid, the windings meet a smooth, gentle sinusoidal voltage. But when you connect the motor behind a frequency inverter, the situation chan... More Details

When you run an electric motor for years, you come to know its behavior intuitively: which sound is normal, what temperature to expect, how it responds under a given load. The conc... More Details

The most honest information about an electric motor's health usually comes from its vibration. When bearings begin to wear, when rotor imbalance develops, or when fasteners loosen,... More Details

When an electric motor fails or its efficiency drops, the first question that usually comes to mind is "should I buy a new one?" Yet a motor's life does not end with its first faul... More Details

Diagnosing Broken Rotor Bars with Motor Current Signature Analysis (MCSA) One of the most critical yet hardest-to-reach parts of an asynchronous motor is its rotor. The rotor forms... More Details

dv/dt and Reflected-Wave Overvoltage on Long Motor Cables The cable between a frequency inverter (VFD) and an asynchronous motor is a component that is often overlooked, yet it is ... More Details

Shaft Voltage and Bearing Currents in VFD-Driven Motors Driving an asynchronous motor with a frequency inverter (VFD) brings major advantages in energy savings and flexible speed c... More Details