In heavy-duty drives like crushers (stone breakers) and mills, the biggest challenge is the enormous inertia of the load. From standstill to full speed, the motor must supply high ... More Details
11 kW and 15 kW are the two most sought-after electric motor ratings in the medium-to-high power class in industry. Large pumps, high-flow fans and blowers, compressors, conveyor a... More Details
Large asynchronous motors do not stop immediately when disconnected from the grid. The rotor keeps spinning for a while under the load's and its own inertia, and this rotating roto... More Details
5.5 kW and 7.5 kW are the two most sought-after electric motor power classes in industry. In pumps, fans, compressors, conveyors, gearmotor drives and countless general-purpose app... More Details
In water supply, cooling towers, fire mains and process feed systems, connecting several pumps in parallel rather than using one large pump is a common engineering choice. Parallel... More Details
In many facilities such as water supply, booster sets, cooling towers, process water and wastewater transfer, groups of several pumps connected in parallel are preferred instead of... More Details
Replacing a failed electric motor in an imported machine looks at first glance like a simple spare-part job; however, if the machine is of North American origin the motor was most ... More Details
The IE5 ultra premium efficiency class, together with synchronous reluctance (SynRM) technology, is setting a new standard in high-speed applications. In spindles (machining work s... More Details
IE4 super premium efficient motors today mostly run together with a variable frequency drive (VFD/inverter), because turning efficiency into real savings is only possible by runnin... More Details
Crane, chain hoist and lifting (hoist) systems push an electric motor into one of the harshest operating regimes in industry. The load is taken from zero to full torque in seconds,... More Details
The vertical shaft impactor (VSI) crusher creates one of industry’s toughest drive applications in sand making and aggregate shaping. At the heart of a VSI is a heavy rotor t... More Details
When buying an IE3 efficient motor we look at the nameplate power, speed and efficiency; yet the critical value that determines how long the motor can withstand a jam, lock or fail... More Details
In three-phase asynchronous motors the most insidious and most common cause of burnout is single-phasing – the loss of one of the three phases. When a fuse blows, a contactor... More Details
When ordering an electric motor we usually talk only about its power (kW) and speed; yet the value that actually defines the motor’s mechanical world is the frame size &ndash... More Details
When buying a pump or fan motor, the catalogue figures most people check are power and speed; yet in a large-impeller fan the real cause of a burnt winding or a protection relay th... More Details
When buying a high-efficiency motor we mostly think of the saving on the electricity bill; but the motor's environmental impact is not limited to the use phase. A motor's life-cyc... More Details
Running an electric motor below its rated frequency (usually 50 Hz) is the most common way to reduce speed with a frequency drive (VFD). But this seemingly simple operation radica... More Details
The synchronous reluctance (SynRM) motor, one of the most common representatives of the IE5 (ultra premium) efficiency class, stands out with its magnet-free rotor and low losses.... More Details
There is more than one way to reach the IE4 (super premium) efficiency class defined by IEC 60034-30-1. One of them is the Line-Start permanent magnet motor, which can run directl... More Details
In an electric motor, vibration and noise are rarely decided by rotor balance alone; they are governed by the mass and rigidity of the housing and by the dynamic behaviour of the ... More Details
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