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Main circuit breaker types from 1000 V MCB to 1000 kV dead tank breaker
This technical article discusses two important circuit breaker classifications – by voltage level (from low to medium and high voltage) and secondly by technology (extinguishing method or medium that...
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How to specify real service conditions for LV/MV equipment inside a substation
The various service conditions for the MV equipment inside substation are linked to the design of the installation, the design of the operating room, the site and the application surrounding... Read...
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Circuit configurations (single line diagrams) for HV and MV switchgear...
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 moreThe...
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Design and Installation of Medium Voltage Switchgear (Facts You MUST Know)
When specifying and planning medium voltage switchgear for a substation, functions and influencing factors must be matched and an economically efficient solution must be found among the offerings of...
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The Most Important Tests For Medium Voltage Metal-Enclosed Switchgear (You...
The design of the insulation system for metal-enclosed switchgear is based upon life expectancy of about 30 years. However, environmental conditions such as dirt, moisture, and corrosive atmosphere can...
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Design of primary and secondary power distribution in car manufacturing...
When power supply systems for car manufacturing plant are planned, each individual problem can be faced in various ways: by means of technical solutions that feature specific technical advantages....
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MV/LV Power Substations Design and Schematics Notes (Network Supply and...
Early consultation with the local Electricity Distributor is essential for agreement on a mutually approved MV/LV substation to act as the intake point for a particular site. This consultation is......
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Current and voltage transformers (CTs and VTs) as protection’s eyes and ears
The CTs (current transformers) and VTs (voltage transformers) are provided in the plants to reduce the voltage and current values of the plant to values such as to be able... Read moreThe post Current...
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Selection of relay for incoming and outgoing feeders for MV and LV MCC...
Selection of proper relay is one of the most important stages to have a reliable network. In this article, selection of relay for incoming and outgoing feeders for LV switchgears... Read moreThe post...
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Coordination analysis for a typical 13 kV distribution feeder of several lines
A typical 13 kV feeder of several lines at a distribution substation is shown in Figure 1. This is supplied from a 115 kV line through a 15/20/25 MVA transformer... Read moreThe post Coordination...
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Standard tripping schemes and trip circuit supervision schemes for MV switchgear
Medium voltage switchgears are used for switching medium voltage loads through associated control, measuring, protective and regulating equipment. This operation also involves considerable manual...
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4 Crucial Switching Functions Of a MV Circuit Breaker (Facts You MUST Know)
The demands made on MV power systems, irrespective of the place of use of the circuit breakers, vary widely in nature. All these functions cannot obviously be performed with the... Read moreThe post 4...
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4 essential ground-fault protective schemes you should know about
While ground-fault protective schemes may be elaborately developed, depending on the ingenuity of the relaying engineer, nearly all schemes in common practice are based on one or more of the... Read...
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How to make calculation for a distribution substation 10/0.4 kV, 2×1600 kVA
Introduction to calculations Distribution substations with installed power of 2×1600 kVA are typical example of electrical power supply facilities which can be often seen all around the Europe and...
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Major components you can spot while looking at opened LV and MV switchboards
Depending on the size of the building or factory site and whether the supply is high voltage or low voltage, there may be requirements for both a main high voltage... Read more The post Major...
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Protection of pumped storage power plants using vacuum generator circuit...
The pumped storage power plants (PSPP) are one of the commercially proven methods available for grid-scale energy storage. Building additional PSPPs particularly in the areas with high installed...
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Learn how to analyse and check factory wiring diagrams of a MV switchgear
As already written earlier regarding LV switchboard, wiring diagrams are used to show control and signalization principle of operation inside switchboard. Usually they are given in form of electrical...
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The essentials of designing MV/LV single line diagrams (symbols & drawings...
First of all, power system designers should always communicate their design requirements through a combination of drawings, schedules and technical specifications. One of the key tools in developing...
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MV distribution system design based on metal-clad drawout switchgear
Nowadays, system design engineers have a choice of many types of systems that may be used for a particular application. This discussion covers medium voltage distribution systems and their...
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The most common MV/LV radial distribution systems applied in buildings
In many cases, power is supplied by the power utility to a building at the utilization voltage. In these cases, the distribution of power within the building is achieved through... Read more The post...
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