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# PLC Ladder Diagrams for Electrical Engineers (Beginners)

As an introduction to ladder diagrams, consider the simple wiring diagram for an electrical circuit in Figure 1a. The diagram shows the circuit for switching on or off an electric… Read more

Nov 30, 2015 | Edvard

# HV/MV/LV Transformer Protection Schemes

Transformer protection should take into account the power, voltage, vector group and the importance of the unit within a particular system. Depending on these factors, the transformers can be assigned… Read more

Nov 28, 2015 | Edvard

# Comparison of 4 Different Flow Control Methods Of Pumps

When in use, the pumps are always part of a pumping system. A pumping system is usually a network of pipes, tanks, valves and other system parts. The receiver is… Read more

Nov 27, 2015 | Edvard

# The Mesh Current Method For Analysis Of Electric Circuits

The mesh current method of circuit analysis discussed in this technical article employs mesh currents as the independent variables. The idea is to write the appropriate number of independent equations,… Read more

Nov 25, 2015 | Edvard

# Guidelines to electrical braking of asynchronous motors

In many industrial systems, motors are stopped simply by natural deceleration. The time this takes depends solely on the inertia and resistive torque of the machine the motor drives. However,… Read more

Nov 23, 2015 | Edvard

# Automatic transfer system explained in details (operational requirements)

Continued from first part – Automatic Transfer System (ATS) in Details – 1 In previous article I explained the role of the automatic transfer system and the operational requirements –… Read more

Nov 21, 2015 | Edvard

# Automatic Transfer System Explained in Details (Part 1)

Using the basic building blocks of utility power, system topology, on-site generation, and uninterruptible power supplies, the basic role of the automatic transfer system may now be defined. In this… Read more

Nov 20, 2015 | Edvard

# Example On How To Design a Low Voltage Switchboard

This technical article has the aim of helping the panel builder and the designer in the construction of ABB SACE ArTu low voltage switchboard. To this purpose, starting from the… Read more

Nov 18, 2015 | Edvard

# Primary distribution schemes of power plants on board of big ships

Continued from the first part Power plants on board of big ships – LV/MV ditribution The MV primary distribution network generally consists in a three-phase system with three conductors without… Read more

Nov 16, 2015 | Edvard

# The Tesla Electric Light Company in Electrical Review, August 14, 1886

Electrical Review, August 14, 1886 – A weekly journal of electric light, telephone telegraph and scientific progress This company has been organized nearly two years, and has devoted that tittle,… Read more

Nov 14, 2015 | Edvard

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