Design and control considerations for an example of the waste water pumping station

Waste water pumping stations are very common application examples of three phase induction motor. There are numerous varieties of power supply and control logic, depending on exact conditions in the…...

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Feb 14, 2020 | Miodrag Kokotovic

Soft starter for potable water well pump (wiring diagram, troubleshooting example)

This article will analyse a real example of electrical switchboard for potable water well pump, containing soft starter as one of major components. Besides explanation of wiring diagram and working…...

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Dec 27, 2019 | Miodrag Kokotovic

How can a PLC and VFD be used for pump control (power and control circuits)

For the last several decades, every engineering task related to process control is realized by the use of PLC (Programmable Logic Controller). If we are talking about induction motor control,…...

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Nov 27, 2019 | Miodrag Kokotovic

5 ingredients that make SCADA operation delicious

To explain in very simple words, I would say that SCADA is a bunch of equipment that provides an operator at a remote location with sufficient information to determine the… Read more

Feb 04, 2019 | Edvard

Five Terms You MUST Be Familiar With: SCADA, DCS, PLC, RTU and Smart Instrument

This technical article shed light on terminology used in the field of SCADA and industrial automation. The terms SCADA, distributed control system (DCS), programmable logic controller (PLC), remote terminal unit… Read more

Apr 25, 2018 | Edvard

How Sensors and Actuators Work Behind RTUs and SCADA Systems

RTUs (remote terminal units) are now made from small computers. Shortly after this began, controller algorithms were programmed into the RTU. Flow totalizers, power factor calculators, and logic solvers soon… Read more

Apr 02, 2018 | Edvard

Contactor As An Important Part Of The Motor Control Gear

Motor control gear and associated circuitry are fundamental parts of electrical distribution and utilisation systems. Motor control gear in its simplest form may be a direct on-line starter consisting of… Read more

Dec 15, 2017 | Edvard

10 Different Duty Types (Load Cycle) Of A Three-Phase Asynchronous Motors

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, and including their durations and sequence… Read more

Dec 11, 2017 | Edvard

Practical Basics Of Synchronous Motors That Every Electrical Engineer Should Know

Like the asynchronous motor, the synchronous motor consists of a stator and a rotor separated by the air gap. It differs from the asynchronous motor in that the flux in… Read more

Nov 08, 2017 | Edvard

Precautions for start and stop control of AC drives and problems that might arise

The protection of the mains supply side of the converter requires a short-circuit protection. This can be, either in the form of a set of adequately rated fuses, usually as… Read more

Oct 18, 2017 | Edvard