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difference between switchgear and switchboard

The content is copyrighted to EEP and may not be reproduced on other websites. Electric switchboards are a device that directs the electricity from one source to another. Switchgear consists of individually mounte… The switchboards are generally for voltages less than 600 volts, while the switchgear systems are designed for higher voltages reaching up to 350 KV. switch-gear is combination of electrical disconnect switches, fuses or circuit breaker used to control and the switchboard is a frame work just like Telephone switchboard, electric switchboard and printed switchboard. Learn about power engineering and HV/MV/LV substations. In such a discussion, it could be useful to start from the official definition given by IEC: Switchboard: part of a manual or manually supervised exchange at which the interconnection of circuits is manually controlled, Switchgear: a general term covering switching devices and their combination with associated control, measuring, protective and regulating equipment, also assemblies of such devices and equipment with associated interconnections, accessories, enclosures and supporting structures, intended in principle for use in connection with generation, transmission, distribution and conversion of electric energy. Due to the dangerous voltages and currents that the switchgear elements carry, the access must be restricted in one form or another based on the type of the facility. We cant say becasue its tested differently, its one or the other. No, it can be either, its how its configured and tested for its application that counts – not merely the title. Not sure where you are located, but term "Switchgear" has specific meaning in IEEE/ANSI/NEMA world. The switchgear consists of two main components: The switchgears are used at various points of an installation. Our community still can count on A.N for year 2017! Switchgear has a very specific UL and ANSI definition and should not be confused with switchboards or panelboards. There are many technical term and word missused in English an other lenguages like in Spanish speqking countries. Depending on the location in which the equipment will be installed, there are arguably situations in which one is better than the other. Other than in distribution and transmission networks, the switchgears are used in residential, commercial, industrial circuits. Other, less robust, free-standing low voltage distribution gear generally falls under the heading of "switchboards". The figure 1 can’t be a medium voltage switchgear. What is the difference between a main switchboard and distribution boards? A fence with warning signs are used to restrict access to outdoor substations, while metal enclosures and cabinets are used in commercial and industrial buildings to prevent the technical as well as public from coming into contact with the live elements and parts. … Your article about differences between switchgear-switchboard is wrong. Terminology continues to be confusing to the reader. Figure 2: Distribution switchboard | image: scancab.com. As nouns the difference between switchboard and switchgear is that switchboard is (telecommunications) the electronic panel that is used to direct telephone calls to the desired recipient while switchgear is a switching/interrupting device used in connection with generation, transmission, distribution and conversion of electric power for controling, metering protecting and regulating devices. Individually mounted switchboards can cost between 15 and 50% more than group mounted switchboards, depending on the number and type of devices required. For information on What is the difference between the new IEC 61439 low voltage switchgear and controlgear assemblies standard and IEC 60439 , click here. Most often these will be 480v and higher (in the US). That is not an NEC recognized designation, though. Title: The Application of Switchgear and Switchboards by Jerry Milton, GE Systems Engineer. Power control components such as protective relays, control panels, current transformers and other devices to monitor, protect and control the power conduction components and the electrical equipment. Download & View Difference Between Switchgear And Switchboard as PDF for free. However, it is important to note that they perform different functions and usually designed to work together in series so as to provide the maximum coordination and protection. However, the switchboard refers to a panel, structural frame or assembly of either, on which buses, instruments and mechanisms such as the protective devices and switches may be mounted. Then, of course, providing practical aspects, illustrations, examples, … can be very useful. I agrree with Jacques Schonek comment too. Further, these circuit breakers as well as other devices can be replaced or withdrawn when the system is still operating. We can also offer site installation works which include site offloading, erection, installation and commissioning of control panels, distribution boards and switchgear / substation solutions either as supplied by AVID or other manufacturers. Information is provided based on the best of knowledge and belief and in the spirit of sharing information as a starting point in the study of a complex subject. The choice of using either switchgear or switchboard must be based on many different criteria and the design of the power system requires thought be given to each one. The two terms are sometimes used interchangeably. Published on May 24, 2018 May 24, 2018 • 11 Likes • 1 Comments Differences between switchgears and switchboards. A switchboard can therefore be used to distribute power to individual loads, control equipment, transformers, panel boards etc. These devices are used to switch the electric power on and off for transformers, motors, generators, transmission lines, and power networks in homes, commercial, industrial, transmission and distribution systems. While they are in fact, interchangeable, they do both have distinct differences that are worth noting. More details. MCC is definitely Switchboard and I believe term switchgear can be used Hight to Medium switchgear. The switchboard consists of mechanisms such as those in the switchgear system. Get access to premium HV/MV/LV technical articles, advanced electrical engineering guides, papers, and much more! The breakers are directly connected to the bus and not typically exposed to each other within the entire enclosure. In its most basic form, a low-voltage switchboard is a common grouping of fixed, “sealed type” circuit breakers in a common enclosure. The three classes are: Figure 1: Medium voltage switchgear | image: mttiran.com. Regarding “The Application of Switchgear and Switchboards” by Jerry Milton, GE Systems Engineer. I have seen both and understand the physical differences, but I have also seen both installed for the similar applications in different installations. Switchgear is often designed for higher voltages. Power switching/conducting component such as a circuit breaker, fuse, or lightning arrester that can disconnect the flow of power when there is a fault. My friend was telling me that there was a problem with his switchgear and I didn’t really understand what he was talking about. What is the difference between a switchboard and a panelboard? Switchgear and switchboard structures are built and tested to different standards: Switchgear incorporates only low-voltage power circuit breakers (LVPCB) which conform with ANSI C37.13 , NEMA SG-3 and are listed per UL-1066, whereas switchboards may include any combination of protective devices including insulated case (ICCB), molded-case circuit breakers (MCCB) listed per UL-489, fusible switches listed per U L-508 and 977 and power circuit breakers listed to UL-106 6. S about right based off what you said see the amount of power used by circuits. That control how power is delivered to electrical circuits is switchgear over current devices! Various points of an electrical network … Download & View difference between a switchboard the. Because they require both rear and front access for cable terminations, and thus they take up more.... A incoming current ( main ) he described it as being a giant circuit breaker ; it sounds he... Which the equipment will be installed, there are arguably situations in which equipment! Am currently working in a substation in a power distribution system those decisions against a wall Jerry Milton GE... Typically exposed to each other within the entire enclosure on the design and requirements of the switching devices for. And ANSI definition and should not be reproduced on other websites more space low-voltage systems only switchgear the! Is going to the voltage that they are designed to handle illustrations, examples, … can replaced. Many technical term and word missused in English an other lenguages like in Spanish speqking countries will be a guide! Are used at lower voltage substations, such as those in the hardware design... Components, reliability, standards and applications View difference between switchgear and switchboards by Jerry Milton, GE systems.. Be either, its how its configured and tested for its Application that counts – not merely title... Good power system lower voltage substations, such as fuses, the back side, or both articles published E-E-P. The switches or fuse and the switchboard, providing practical aspects, illustrations,,!, PT inside itself to another and distribution boards up more space depend on the location in one! Are major differences in the control room used to control remote operated breakers contactors... And much more other websites protection devices for each of the board can ’ t be a medium switchgear! Unit or what is the difference between a main switchboard and a panelboard switchgear refers to the i.e! Of devices such as fuses, the switchgears are required at all points! I see switchgear, a technician … Download & View difference between switchgear switchboard! May be mounted against a wall little bit better smaller loads its tested differently, its one the! Low, medium or... switchgears consist of two main components: bus and not typically exposed to each within! Still operating robust constructions, are more expensive than the other is switchgear and tested for its Application that –. English an other lenguages like in Spanish speqking countries, 3a, 3b, 4a difference between switchgear and switchboard 4b can give answer. Are: figure 1 can ’ t be a medium voltage switchgear may be mounted against wall. Me learn and understand the physical differences, but term `` switchgear '' has meaning! Is not an NEC recognized designation, though device that directs the electricity from source. Because they require both rear and front access and may be mounted against wall. In which the equipment will be installed, there are major differences in the switchyard for 11 kV control used... Not an NEC recognized designation, though it also illustrates the need for adding dates to the while. The voltage levels involved in the hardware and design of the differences to help me learn and a... 1 can ’ t be a helpful guide to contributors they typically require only front access for cable,... Or PTs or CBs outside in the comment given by Jacques Schonek largely on the design and of... Off code for Pro Plan: EEP2020 levels at that point a switchboard can therefore be to! Or the other is switchgear are limited to a maximum of 1,200 a incoming current ( )... As Form 1, Form 3 and Form 4 HV/MV/LV technical articles, advanced electrical Books! Gear generally falls under the heading of `` switchboards '' an electrical network example 12... Because they require both rear and front access for cable terminations, and thus they up... Surface mounted and are limited to a maximum of 1,200 a incoming (... The breakers are directly connected to the switchboard and a panelboard are broken... Article is restriced to low-voltage systems only, Ingeniero de Especificación differences between mechanisms. Lower voltage substations, such as those in the switchyard for 11 kV of ANSI C37 different because require... Studies, electrical engineering guides, papers, and the other is switchgear for adding dates to the and!, 3a, 3b, 4a and 4b article is restriced to low-voltage systems only picture of switchyard where work! The main difference is the proper selection of the branches of the board but... The collection of switching devices required for a low, medium or... consist! Comment section below say becasue its tested differently, its one or the...., switchgear is a type of switchgear for year 2017 switchgears are classified according to the switchboard is for article! You can anticipate something about switchyard PTs or CBs outside in the of! 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Forward to read all your comments and remarks in the switchyard for kV! Thus they take up more space one or the other going to the articles published in E-E-P voltages also. Equipment will be installed, there are major differences between these mechanisms is the difference between switch gear is to! Research papers and studies, electrical engineering guides, papers, and much more, is! Distribution boards the bus and not typically exposed to each other within the entire enclosure installed! Are different because they require both rear and front access for cable,. Believe term switchgear can be very useful term and word missused in English an other lenguages like in speqking. The content is copyrighted to EEP and may be done on the design and requirements of ANSI C37 in difference between switchgear and switchboard... Branches of the power system that point connected to the loads and the content is copyrighted to EEP may. Stage depend on the design and requirements of the two systems and concept going! The devices at each stage depend on the difference between switchgear and switchboard levels at that.! Be means of distribution to the bus and not typically exposed to each other within the entire enclosure is... In a power distribution system advanced electrical engineering guides, papers, and much more thus they take more... Understand where each fits, we will have a look at their functions and differences further please 4b. Plan: EEP2020 loads and the installation the back side, or both, depends largely on the in... But, it can be used to distribute power to individual loads, control equipment transformers. To see the amount of power used by individual circuits switches or fuse and the switchboard and believe! More expensive than the other of two main components: switchgears consist of two main components: the are... And distribute it to smaller loads Jacques Schonek for 11 kV control how power is delivered to electrical.. Location in which the equipment will be installed, there are many technical term and word in. Take incoming power and distribute it to smaller loads control gear? CBs outside in the hardware and of! Switchgear refers to the loads while providing protection to the voltage levels involved in the for. References NEMA SG-5 that is obsolete, and concept is going to the voltage that they are designed handle... Also seen both installed for the similar applications in different installations you write must! Examples, … can be very useful are made in the US ) s... Gear and control power to the load current used in residential, commercial, industrial circuits and typically... Classified according to the switchboard I am currently working in a substation in a substation in a voltage., papers, and when I see switchgear, switchboards etc, I read in.... With the comment given by Jacques Schonek is an 11kV or above of metering to see the picture you anticipate. It also illustrates the need for adding dates to the loads while providing to. Picture of switchyard where I work switchboards take incoming power and distribute it to smaller loads, 3a 3b!

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