Electrical Distribution Architecture In Water Treatment Plants
For both drinking water and wastewater treatment, 4 different sizes of plants have been distinguished. The size of plants can be expressed in quantity of treated water per day, or… Read more
Jan 04, 2016 | By Edvard Csanyi
Distribution of the MV neutral conductor right to the loads
4-wire systems are characterized by distribution of the MV neutral conductor right to the loads. This type of distribution is used in the USA and in certain countries influenced by… Read more
Dec 16, 2015 | By Edvard Csanyi
The basics of primary medium voltage switchgear
Primary medium voltage switchgear represents an important part within the primary distribution substation functionality. The switchgear works as a connection node between the outgoing distribution feeders and the in-feeding power… Read more
Dec 14, 2015 | By Edvard Csanyi
Primary distribution schemes of power plants on board of big ships
The MV primary distribution network generally consists in a three-phase system with three conductors without neutral. Such system is usually managed with the neutral of the star point isolated from… Read more
Nov 16, 2015 | By Edvard Csanyi
LV/MV Distribution In Power Plants On Board Of Big Ships
Without going into the details of the management modalities of the electric distribution or of the layout that an electrical system on board may have, it is possible to describe… Read more
Nov 09, 2015 | By Edvard Csanyi
Eight Most Common Schemes To Supply MV Switchboard
Medium voltage networks are made up of switchboards and the connections feeding them. Let’s take a look at the eight different supply modes of these medium voltage switchboards. We’ll start with… Read more
Oct 23, 2015 | By Edvard Csanyi
Analysis of pole-mounted MV/LV transformer grounding
Let’s discuss in some detail the reasons for the grounding philosophy adopted for pole-mounted MV/LV transformer substations illustrated in Figure 0. Contents: LV grounding MV grounding Combined MV/LV grounding Separate… Read more
Sep 23, 2015 | By Edvard Csanyi
4 Factors To Consider When Selecting a Sectionalizer
Sectionalizers are (beside overcurrent relays, reclosers and fuses) one of the most used for distribution system protection. A sectionalizer is a device that automatically isolates faulted sections of a distribution… Read more
Sep 16, 2015 | By Edvard Csanyi
SF6 or Vacuum MV Circuit Breaker In Specific Switching Applications
Many years of experience in developing both SF6 and vacuum medium-voltage circuit breakers has yielded up ample evidence that neither of the two technologies is generally better than the other,… Read more
Sep 14, 2015 | By Edvard Csanyi
MV Metal-Enclosed Switchgear and Loss of Service Continuity (LSC) Categories
Some parts of a switchgear may be made accessible for the user, for various reasons from operation to maintenance, and such an access could impair the overall operation of the… Read more
Jul 10, 2015 | By Edvard Csanyi
Medium Voltage Earthing Systems – Arrangements and Comparison
First, let’s define the different medium voltage earthing systems and then compare the advantages and disadvantages of each one. Earthing systems in medium voltage can be differentiated according to the… Read more
Jul 03, 2015 | By Edvard Csanyi
Current and voltage sensors as an alternative to traditional CTs and VTs
As an alternative for traditional primary current and voltage measurement techniques, the use of sensor technique is gaining field. This technique is typically applied to current and voltage measurement in… Read more
May 25, 2015 | By Edvard Csanyi
Degradation of Insulation in Switchgear (What’s Really Happening)
Electrical insulation is subjected to electrical and mechanical stress, elevated temperature and temperature variations, and environmental conditions especially for outdoor applications. In addition to normal operating conditions, there are a… Read more
Mar 04, 2015 | By Edvard Csanyi
Ring Main Unit (RMU) as an important part of secondary distribution substations
A Ring Main Unit (RMU) is a totally sealed, gas-insulated compact switchgear unit. The primary switching devices can be either switch disconnectors or fused switch disconnectors or circuit breakers. Different… Read more
Feb 11, 2015 | By Edvard Csanyi
Inspection, Test and Measurement Procedures for LV and MV (up to 36kV) Switchgear
Installed in clean, well ventilated or air-conditioned locations, switchgear will require little routine maintenance. Major inspection should be scheduled for power plant shutdowns and concentrate for low voltage switchboards on identifying contact… Read more
Jan 16, 2015 | By Edvard Csanyi