electrical switchboard

More Knowledge About Distribution Substations


A substation is a high-voltage electric system office. It is utilized to switch generators, hardware, and circuits or lines all through a system. It likewise is utilized to change AC voltages starting with one level then onto the next, and/or change alternating current to direct present or direct current to alternating current. A few substations are small with minimal more than a transformer and related switches. Others are expansive with a few transformers and many switches and other hardware. There are three aspects to substations:

Substation Types: Although, there are for the most part four sorts of substations are a combination of two or more sorts.

  • Step up Transmission Substation
  • Step down Transmission Substation
  • Distribution Substation
  • Underground Distribution Substation
  • Substation Functions
  • Substation Equipment

Distribution substations are situated close to the end-users. Distribution substation transformers change the transmission or sub-transmission voltage to lower levels for utilization by end-users. Typical distribution voltages vary from 34,500Y/19,920 volts to 4,160Y/2400 volts.

34,500Y/19,920 volts are interpreted as a three-stage circuit with a grounded neutral source. This would have three high-voltage conductors or wires and one grounded neutral conductor, a sum of four wires. The voltage between the three stage conductors or wires would be 34,500 volts and the voltage between one phase conductor and the neutral ground would be 19,920 volts.

From here the power is distributed to modern, business, and private clients.

Substations are intended to achieve the accompanying functions, although not all substations have every one of these functions:

  • Change voltage starting with one level then onto the next
  • Direct voltage to make up for system voltage changes
  • Switch transmission and distribution circuits into and out of the grid system
  • Measure electric power qualities flowing in the circuits
  • Connect communication signals to the circuits
  • Eliminate lightning and other electrical surges from the system
  • Connect electric generation plants to the system

Make interconnections between the electric systems of more than one utility

Significance Of Switchboards


An electric switchboard is a gadget that directs power from one or more sources of supply to a few smaller areas of utilization. It is a get together of one or more boards, each of which contains switches that permit power to be redirected.

The U.S. National Electrical Code (NEC) characterizes a switchboards as “a large single board, edge, or assemblies of boards on which are mounted, on the face, back, or both, switches, over-present and other defensive gadgets, buses, and generally instruments”. The part of a switchboard is to permit the division of the current supplied to the switchboard into littler currents for further distribution and to give switching, current security and metering for those currents. Switchboards may circulate energy to transformers, panelboards, control equipment, and, at last, to individual system loads.


Inside a switchboard there will be one or more busbars. These are flat pieces of copper or aluminum, to which the switchgear is associated. Busbars bring large currents through the switchboard, and are supported by insulators. Bare busbars are general, yet numerous sorts are manufactured with an insulating covers on the bars, leaving just connection points uncovered.

The operator is shielded from electric shock by safety switches and fuses. There may likewise be controls for the supply of power to the switchboard, originating from a generator or bank of electrical generators, particularly recurrence control of AC power and load sharing controls, in addition to gauges demonstrating frequency and maybe a synchroscope. The power going into a switchboard should constantly equivalent to the power going out to the loads.


Present day modern switchboards are metal encased and of “dead front” construction; no empowered parts are available when the covers and panels are shut. A switchboard may have incoming bus bars or bus conduit for the source connection, furthermore for large circuits fed from the board. A switchboard may incorporate a metering or control compartment separated from the power distribution conductors.

Present day modern switchboards are metal encased and of “dead front” construction; no empowered parts are available when the covers and panels are shut. A switchboard may have incoming bus bars or bus conduit for the source connection, furthermore for large circuits fed from the board. A switchboard may incorporate a metering or control compartment separated from the power distribution conductors.

Segregated Phase Bus Duct- Managing the Low and Medium Voltage Requirements

segregated phase bus

Generation and distribution of electricity is of vital importance for everything nowadays. Every enterprise and every household requires electricity. There are various devices and components which are involved in the production and management of electricity as it is a very complex process. Segregated Phase Bus Duct is one such device which is designed for the low and medium voltage requirements.

The purpose of such designs is to meet specific, continuous and short circuit current ratings and generating stations, substations and industrial distribution systems which can be installed indoors and outdoors. In a segregated bus duct, each phase conductor is separated by a grounded barrier from adjacent phases unlike in non-segregated phase ducts where all phase conductors are in the same enclosure. For conducting large currents between devices, a cable bus is used. For very large currents in generating stations or substations, where it is difficult to provide circuit protection, an isolated-phase bus is used. Each phase of the circuit is run in a separate grounded metal enclosure. The only fault possible is a phase-to-ground fault, since the enclosures are separated. This type of bus can be rated up to 50,000 amperes and up to hundreds of kilovolts (during normal service, not just for faults), but is not used for building wiring in the conventional sense.

One of the greatest advantages of bus ducts is that they are capable of adding or removing a branch circuit without removing voltage from the whole duct. It carries large amounts of amperage across a distance. This is useful in plant design so that you can pull individual leads down from it to machinery. The problem with this is control. If it is installed and the plant does not properly keep up on load documentation, it is easy to overload it. Installing bus duct requires the installer to work with and handle high voltages and currents which can cause instant death. Therefore, it should be done with utmost care and all the necessary precautions should be taken.

Points Switchboard Manufacturers Must Know While it’s Make

switch boards

Switch boards, comprising the Main LV switch board, also known by the acronym MLVS are vital to the dependability of electrical installation. It must act in accordance with the set guidelines that govern the construction and design of LV switch gear congregations.

A switchboard is the point at which an incoming power supply segregates into separate circuits, each of that is controlled and protected by the switchgear or fuses of the switchboard. Switchboard is partitioned into a couple of functional units, comprising all the mechanical and electrical elements that contribute to the fulfillment of a given purpose. It symbolizes a key link in the constancy chain.

Therefore, the type of switchboard should be perfectly modified to its application. Switchboard Manufacturers must note that the construction and design must comply with working practices and applicable standards.

The switchboard enclosure offers dual protection:

  • Security of switchgear, indicating relays, fusegear, instruments, etc. against vibrations, mechanical impacts and various other external influences are prone to interfere with operational integrity (dust, EMI, vermin, moisture, etc.)
  • The defense of human life against the possibility of direct and indirect electric shock.

Modern industrial switchboards are sternly fabricated with metal enclosed design construction; no energized parts are easy to get while the panels and covers are closed. Earlier, open switchboards were made with switches and several other devices were mounted on panels fabricated of ebony, granite or slate asbestos board. Metal enclosure of switchboard is linked to earth ground for personnel protection. Large switchboards might be unattached floor mounted enclosures with stipulation for incoming connections at the top or bottom of the enclosure. Switchboard may perhaps have incoming bus duct or bus bars for the source connection and for large circuits fed from the board. Switchboard might include a control or metering compartment estranged from the power distribution conductors.

Electrical Switchboard: Making It Perfectly

switchboard electrical

Indeed depressing, the switchboards market has come of age in terms of patents, designs, safety norms and quality. The archetypal and conventional grey market though, is still playing the role of a spoil-sport. They gloss over the quality and safety guidelines to capture the whole market share and cause a serious threat to the business. The contractor, electrical designer and the end user are equally held accountable both legally and professionally for the design and production of the panel board.

The Electrical Switchboard is only a fraction of the total outlay on a complete panel and most generally given the least care, while it comes to the design resulting in rapid halt of operation causing enormous production losses. Imagine developed production unit halted for some specific hours to service the distribution panel!!! The safety guidelines of the operating board safeguard not only the panel but also the other related assets such as, wires, transformers, electronics, machines, etc. and most prominently the precious lives of operators. Thus it is extremely significant that you select the right criteria while designing the electrical switchboard.

A well known research expert from the field once drew a comparison of a fully built panel to the human body with fuses & switchgears analogous to the bus bars, vital organs and other connectivity to the veins and arteries, intelligent system to the brain and nerves and the switchboard to the muscular and skeletal systems!!! There’s no better way to underline the significance of properly designed switchboard !

We have noticed a nerving disagreement of interest with the Electrical design consultants and end users on one and the contractors on the other end, with safety norms and quality railed against blind cost decline drives. Pointless to say safety or technical guidelines must always be of utmost priority in switchboard manufacture.

Modern Switch Boards For Non-Hazardous Life

switch boards

Redesign your house’s electrical wiring: The electric system of a house should be perfect beyond any doubt. In this case, nothing less than perfection would work because any chance with electric supply has tremendous repercussions. So you must ensure that the wiring, the fuse and the switchboards, all remain perfect. An old wiring system is the sign of an old house and therefore, the resale value of a house falls severely. There is very little to be done for a house with old time switch boards and supply system. That is why it is necessary that you must overhaul or repair or redesign the electrical wiring system, the panes, switchboards etc. You cannot afford to think in money terms because it could be fraught with danger. This danger is not something that can be ignored, but something which can prove to be hazardous and life threatening. That is why a house should have all the modern facilities and amenities in terms of electrical system.

Go for the reputed and famed electric component makers: You cannot afford to take it lightly, even to the slightest extent because this has something to do with life and property. Electricity can cause fires and explosions which might dump your house in a matter of few hours. So it is better to play safe and use the modern facilities, fuses and circuits to safeguard against anything unwanted. Money is not of much importance here and you should go for the reputed switchgear manufacturers whose products would ensure your safety. This way you can sleep peacefully in the comfort of your house. Moreover, the providers of the electric parts ensure high quality and latest gadgets which confirm to international standards and are latest. Furthermore, you can upgrade your house to any other latest electrical technology development and live even better and safe. As for the cost, the products are available at decent and appropriate prices from the leading vendors.

Switchboard Electrical: Siemens Essentials

Switchboard Electrical

Power distribution systems are used in every industrial, residential and commercial building for safely controlling the distribution of electrical power all through the facility. Most of us are well-known with the power distribution system originated in the average home.

Power bought from a utility company enters the house all the way through a metering device. The power is then dispersed from the load center to a variety of branch circuits for electrical outlets, appliances and lighting. The responsibility of a switchboard is to separate the main current offered to the switchboard into minor currents for further distribution and for offering current protection, metering and switching for an assortment of currents.

There are numerous elements which make up the Switchboard Electrical. Incorporated in the list of elements is a bus, frame, service metering, over current defensive devices, and also outer covers.

Buses are mounted in the frame. Horizontal bus bars are extensively used for distributing power to every switchboard section. Vertical bus bars are used for distributing power via over current devices to the load equipments. Bus bars are made up of silver finished copper or tin finished aluminum. Bus bars may perhaps either be current density rated or temperature rated. The current density rating denotes the maximum current per square inch of the bus bar cross section.

Electrical switchboard is the vital component of any industrial, commercial and residential usage. They are the most essential constituent of any commercial and industrial purpose. It is a component which cannot be ignored, as without them there would be no control on any electrical equipment. Each and every electrical appliance is controlled by these electrical switch boards. If these electrical switch boards are not been there, then it would be nearly impossible to control your electrical appliances and controlling them is utmost essential.


Switchboards: An Interior Decorative Item

switchboardGone are the days when switch boards were merely used for switching on and off the electrical appliances. They are now used as an interior decoration item. Not precisely an interior decorative piece, but they are now utilized as an item for increasing the beauty of the wall and the room. Earlier they used to come in only cream and white, the classic colors. But now they are available in wide range of colors and patterns. As per the paint applied in your room, the switch boards could be chosen as per the paint. Switch boards are now not merely an off/ off device used for switching on and off the electrical appliance, they are in fact, used as a board which could increase the charm and attraction of the wall where they are installed. The Switchboards now don’t only come in wooden board, but they are now available in plastic boards.