UK’s Leading Engineering Forum For Todays Engineer

Providing Regular Tips & Advice on Variable Speed Drives, Motors & Industry Related Topics

Category Archive: Motors

Mar
26
2018

Quantum Controls – the fourth Emergency Service?

Obviously, we say this with tongue in cheek! As important as our services are to UK manufacturing, when our engineers are called upon it is not a matter of life or death. The ladies and gents of the police, fire and health services deserve all the recognition they get (and much better salaries in our …

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Mar
02
2018

Snow doesn’t beat Quantum, the right vehicle for the job saves the day!

Earlier this week Quantum Controls took a call from a cable manufacturer who had a DC motor failure within his production line, and the extreme weather conditions meant getting through the snow to site was difficult – but our 4 x 4 vehicles meant our engineers were still mobile. The motor had already failed three …

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Feb
14
2018

What are the common effects of harmonic distortion?

The distortion in the waveform in the load current of any nonlinear device causes similar changes in the voltage waveform relative to the harmonic impedance of the source network. This voltage distortion affects both the current and voltage for all other loads connected to that system. The common effects of such harmonic distortion are as …

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Jan
18
2018

What are the 10 different duty types (load cycle) of three-phase asynchronous motors?

Motor Duty / Load Cycle The term duty defines the load cycle to which the machine is subjected, including, if applicable, starting, electric braking, no-load and rest de-energized periods, including their durations and sequence in time. Duty considered as a generic term, for example, can be classified as continuous duty, short-time duty or periodic duty. …

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Dec
15
2017

What are the top safety tips for electrical engineers?

Seven steps that save lives// While we usually focus our weekly technical releases on practical assistance for today’s engineers, nothing is more important than understanding how to work safely. As an example of electrical safety procedures, we will discuss the safe working procedures used by HV field technicians – the ‘Seven steps that save lives‘. …

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Dec
14
2017

How do I select induction motors for industrial applications? (Part 3)

Design Considerations (cont.) Different Rotor Classes// The different rotor class, i.e. KL7, KL10, KL13, KL16, KLp, etc. are available in case of the motor to fulfil the functional torque requirements of the driven equipment. The rotor classes indicate against what quantum of the load torque the motor would be able to start easily. The motor …

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Dec
04
2017

How do I select induction motors for industrial applications? (Part 2)

Design Considerations (cont.) Motor Efficiency// The new IEC 60034-30 motor efficiency standard could have major energy-saving impact for industrial motors worldwide. Though standard motors are now available with a better efficiency, this factor (motor efficency) requires due attention when making the selection of the motor for a specific application in view of substantial quantum of …

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Nov
16
2017

How do I select induction motors for industrial applications? (Part 1)

Introduction to Induction Motors // All types of industries are invariably required to install different types of electric motors as the prime mover for driving process equipment in their respective production line up. The continuous process of technical development has resulted in the availability of highly diversified types of electric motors. Hence, the utmost care should …

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Nov
09
2017

What is the principle of power factor correction and protection of capacitors?

Power factor correction principle// Loads such as induction motors draw significant reactive power from the supply system, and a poor overall power factor may result. The flow of reactive power increases the voltage-drops through series reactances such as transformers and reactors, it uses up some of the current carrying capacity of power system plant and …

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Oct
05
2017

What are the basics of DC motors for electrical engineers?

General about DC motors// Separate field excitation DC motors are still sometimes used for driving machines at variable speed. These motors are very easy to miniaturise, and essential for very low powers and low voltages. They are also particularly suitable, up to high power levels (several megawatts), for speed variation with simple, uncomplicated electronic technologies …

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