# Author Archive for: Edvard Csanyi

## Edvard Csanyi

1308 awesome technical articles.

Electrical engineer, programmer and founder of EEP. Highly specialized for design of LV/MV switchgears and LV high power busbar trunking (<6300A) in power substations, commercial buildings and industry fascilities. Professional in AutoCAD programming. Present on

# Learn How To Specify Current Transformers

Current transformers are used to supply information to the protective relays and/or current, power and energy metering “instruments”. For this purpose they must supply a secondary current proportional to the… Read more

Dec 05, 2015 | Edvard

# 7 guidelines to select correctly rated circuit breaker

The general procedure for the selection of correctly rated circuit breaker follows the following scheme of seven major questions you should answer: What is the task of the branch circuit… Read more

Dec 04, 2015 | Edvard

# PLC Ladder Logic Functions for Electrical Engineers (Beginners)

To understand programmable logic controllers (PLCs) and their applications, you must first understand the logic concepts behind them. We’ll will explain the relationship between Boolean algebra and logic contact symbology,… Read more

Dec 02, 2015 | Edvard

# 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)

In previous article I explained the role of the automatic transfer system and the operational requirements – three modes of operation: manual mode, automatic mode and auto mode failure. Now… 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