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Eleven Common Problems in Electric Motors and Their Remedy
Generally, electric motors are highly reliable (except they’re not!) machines that require little maintenance. In practice, often even this little care is neglected, and problems with motors come...
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MCC Circuit Featuring Auto Re-Closure Relay Functionality
An MCC circuit of a motor could be based on the Direct Online Starter (DOL) or Star Delta Starter which has something to do with the requirement of the power system in an industry. But it could have...
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Star-delta starting used with large horsepower motors
Star-delta starting is frequently employed with high horsepower motors to mitigate inrush current during the start-up stage and to reduce starting torque. Star-delta starting involves initially...
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The analysis of relay control systems: Electrical schematics with latch, step...
To be honest, expertise in relay systems is fundamental for comprehension and creativity in circuits design. From bi-stable relays that maintain their states without continuous power to step relays...
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Mastering schematic drawings: Analyzing seal-in contacts in motor control...
In the domain of electrical engineering, seal-in contacts stand as pivotal components in control circuits, ensuring the sustained operation of electrical devices beyond the initial activation. These...
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The essentials of pumping, pump speed and flow rate control that engineers...
Around twenty five percent of the energy that is consumed by electric motors worldwide is accounted for by pumping systems, and certain industrial facilities use anywhere from twenty-five to fifty......
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The art of achieving synchronous motor transient stability (especially in...
Since the subject of this article is somewhat not-that-easy to understand, I suggest starting with the basics of the synchronous motor. In the synchronous motor, the basic magnetic field is... Read...
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Six different ways to start a medium-voltage motor you should know about
The AC induction motor is a key component of the modern world economy. These motors are used in industrial facilities all over the world to power the equipment that boosts... Read more The post Six...
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How should facilities optimize their power consumption due to the hiking...
Nowadays, the enormous energy consumption worldwide has taken a downturn due to the hiking energy prices. Whether it’s gas, oil, or coal, the rising costs forced many facilities worldwide to... Read...
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Do you know what reactive power compensation is? If not, keep reading, it’s...
When reactive power devices, whether capacitive or inductive, are purposefully added to a power network in order to produce a specific outcome, this is referred to as compensation. It’s as... Read...
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Main and auxiliary circuit diagrams of switching pole-changing three-phase...
This technical article is dedicated to the main and auxiliary circuit diagrams of switching three-phase motors. We’ll now discuss a little more complicated schematics than the previous article. We’ll...
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Main and auxiliary circuit diagrams of switching three-phase motors via...
This technical article will try to shed some light on the main and auxiliary circuit diagrams of switching three-phase motors via contactor and switching directly. We’ll cover some fundamental...
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Eight most damaging overvoltages in industrial systems (root causes and...
Electric insulation in energized systems is continuously under stress. Electric systems are subject to disturbances of many types which unavoidably produce overvoltages. However, the application...
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Never let an electric motor drop dead. Learn how to listen and read the...
Like any other machine, electric motors are vulnerable to faults, which might lead to catastrophic failure of the machine in the long run if left unmonitored. In this technical article,... Read more...
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Six methods to control the flow of harmonic currents and decrease harmonic...
The first technique to control harmonic-related problems in the industry involved substantial use of single-tuned filters to offer a low-impedance path to harmonic currents. Interestingly, it is not...
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Troubleshooting the most typical winding problems of three phase electric motors
It’s always important to identify the real cause of burned windings and not just to replace the electric motor. Motor windings have a different appearance in all these failure situations:... Read more...
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The most used types of single-phase motors in the world
You should know that single-phase motors are rarely rated above 5 kW. Fractional-kilowatt motors, most of which are single-phase, account for 80−90% of the total number of motors manufactured and......
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Mastering Motor Control Center (MCC): Wiring diagrams and equipment from zero...
Motor control center (MCC) was introduced back in 1937 to place different motor starters in one cabinet to save space. It is a modular cabinet that supplies and controls motors,... Read more The post...
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The essentials of electrical systems in cement plants
Many young engineers consider cement plants pretty complicated because of their weird technology. The reason probably lies in the fact that you cannot understand all those technologies unless you...
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Protection of three-phase motors from unbalance (loss of phase and phase...
The most common cause of unbalance for three-phase motors is the loss of phase resulting from an open fuse, circuit breaker, connector, or damaged conductor. Unbalances in other connected loads......
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