Author Archive for: Edvard Csanyi

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Edvard Csanyi

1288 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

Protecting Motor From External Network Disturbances (Unbalance, V/Hz-ratio and Re-Energizing)

Unbalance in the supply voltage is typically due to a broken phase condition somewhere in the upstream network. This may result from single-phase fuse failure or pole discrepancy of a… Read more

Jan 29, 2018 | Edvard

How to control and protect capacitor banks before something goes wrong

The purpose of a capacitor bank’s protective control is to remove the bank from service before any units or any of the elements that make up a capacitor unit are… Read more

Jan 24, 2018 | Edvard

Circuit configurations (single line diagrams) for HV and MV switchgear installations

The starting point for planning a switchgear installation is its single line diagram. This indicates the extent of the installation, such as the number of busbars and branches, and also… Read more

Jan 22, 2018 | Edvard

Neutral Point Treatment in Three-Phase Networks (Detailed Overview and Comparison)

The main faults in power networks are the single-phase short-circuit and the short-circuit to ground. The short-circuit to ground is a conductive connection between a point in the network belonging…...

Jan 18, 2018 | Edvard

Calculation of shaded-pole motor losses and efficiency at full load in 6 steps

First, let’s say few words about shaded-pole motors, and then dive into calculation procedure. A shaded pole motor is the simplest form of a single phase motor and is very… Read more

Jan 17, 2018 | Edvard

What are Triplen Harmonics and where do they happen?

In order to understand network problems with triplen harmonics, first let’s have a short explanation of harmonic phase sequence and third harmonics. Power engineers have traditionally used symmetrical components to… Read more

Jan 15, 2018 | Edvard

Recommended Protection For Transformers

The protection that is recommended and commonly applied for transformers is summarized in the following figures. It should be noted and recognized that these are general recommendations, not strict. More… Read more

Jan 12, 2018 | Edvard

What is what in outdoor HV substation? How to identify elements by shape and function?

It’s not always an easy task to explain what is what in high voltage substations. Shapes of the major elements are mostly similar through substations, but there are also combinations… Read more

Jan 10, 2018 | Edvard

HV Transmission Line Components (Towers, Conductors, Substations, ROWs and Roads)

The towers and conductors of a transmission line are familiar elements in our landscape. However, on closer inspection, each transmission line has common components with unique characteristics, beginnings and ends…. Read more

Jan 08, 2018 | Edvard

8 Examples Of Transformer Differential Protection Using SIPROTEC Numerical Relays

The following examples show the application of SIPROTEC numerical relays for transformer protection. The individual functions are designated, using ANSI codes (Standard C37.2 – Electrical Power System Device Function Numbers)…....