Examples of insulation used on spacecraft include reinforced carbon-carbon composite nose cone and silica fiber tiles of the Space Shuttle. Thus, electrical insulator material should have the following properties. The mechanical strength of these insulators is strong. Their sole purpose was to insulate the wire from the wood, reason for which materials such as glass, porcelain or composite polymer materials had been chosen. The arrangement of insulators highly depends upon the weather condition, voltage, the size of the insulator, etc. prevent electrons’ conductivity from passing through. They are listed below. Thermal Insulators, disallow heat to move from one place to another. While Stay and Shackle Insulators are mainly used in low voltage applications. Rubber, in particular, is often used as a wearable insulator to protect electricians and other specialists from shocks that could be dangerous or deadly without protection. The electrons present in the electrical conductor allow your phone to be fully charged. It allows the soundproofing of appliances. Conductors and Insulators in Everyday Life. Examples of Insulators. The following is a list of electrical insulator examples. Interesting Facts about Electrical Conductors and Insulators. Your electrician uses a special screwdriver with a plastic coating to check the passage of electrical charges without getting electrocuted. Since smaller-bore pipes present a greater risk of freezing, insulation is typically used in combination with alternative methods of freeze prevention (e.g., modulating trace heating cable, or ensuring a consistent flow of water through the pipe). Now you can understand that heat conductors and insulators can both be useful, but for different jobs. As they do not allow the flow of heat. Similarly, in low voltage systems, stay & shackle insulators are used. PIN TYPE INSULATORS Pin type insulators are used for the transmission of lowervoltages. An electrical insulator has a porcelain shell. Stay Insulator. What are insulators. 5) Shackle Insulator or Spool Insulator. They are listed below. String Insulators: When suspension string is used to sustain extraordinary tensile load of conductor it is referred as string insulator. There are innumerable uses of insulators. Which electrical insulator material is best for performing substantial duty voltage? Insulators are playing major roles in electrical power system. Glass Insulators were first produced in the 1850's for use with telegraph lines. Conductors of electricity helps in conduction of it for the use of electrical appliances. Sound Insulators help in controlling noise level, as they are good in absorbance of sound. Dielectric Strength – The electrical insulator materials should have been mechanically strong to withstand and carry the tension and weight of electrical conductors. Today there are over 2000 collectors, and insulator clubs, national shows, and good reference books are available. They are not economically feasible for 33 kV andhigher transmission lines. As technology developed insulators were needed for telephone lines, electric power lines, and other applications. This is because electricity can actually "jump" over a fairly long path if the voltage is high enough. In general, the higher the temperature the lower the conductivity as resistance increases with temperature. Silicon, used in the printing of circuit boards and other electronic components, is a crucially important semiconductor. Thermal insulators are used to prevent the flow of heat. 3. In high voltage transmission lines, these insulators include a set of suspension insulators. In a 11 kV system we generally use one part type insulator where whole pin insulator is one piece of properly shaped porcelain or glass. This property usually cannot be changed, but in certain scenarios, such as with oxidized metals, it is possible for a conductor to degrade into a semiconductor – a material with a resistance that falls between insulator and conductor. These materials are known as electrical insulators. Pro Lite, Vedantu As per the voltage grade the no of disc isolators are increased or decreased so that is is suitable for any voltage level. Shackle Insulators Post-Insulator. It is useful in minimizing the excessive tension in the line. On the contrary, electrical insulator materials do not allow free flow of electric currents or charges. Pin insulator are Normally used up to 50 kV transmission line typically medium voltage transmission. Let us begin with the electrical insulator definition before discussing the properties of insulators and the uses of insulators. The property which makes insulators different from conductors is its resistivity. Another name for strain insulator is tension insulator. Wood is also a good heat insulators; both plastics and wood are used on the handles of cookware and other household items, such as irons. In buildings, insulation is the materi… Unfortunately, human skin is one of the best conductors of electric charges. The fundamental materials used are a mixture of feldspar (35%), china clay (28%), flint (25%), ball clay (10%), and talc (2%). • Insulators are used in electrical equipment to support and separate electrical conductors without allowing current through themselves. Uses of Thermal Insulators An insulator is a certain material that is installed to reduce the rate of heat transfer from an object to the outside elements. Glass and porcelain are commonly used for high-voltage transmissions. December 13, 2020. Blake Flournoy is a writer, reporter, and researcher based out of Baltimore, MD. Porcelain; It is a material that resists electrical current at eminent temperature. 2. Working independently and alongside professors at Goucher College, they have produced and taught a number of educational programs and workshops for high school and college students in the Baltimore area, finding new ways to connect students to biology, psychology, and statistics. Generally, electrical insulators are highly useful at home, offices, streets, etc. Objects can be positively charged, negatively charged or neutral. Insulators are made of ceramic materials which include porcelain and glass. Glass was one of the first materials used in electrical transmissions but has been largely replaced in favor of cheaper materials. Energy saving. Uses and dangers of static electricity Conductors allow an electric charge to pass through them, but insulators do not. Back in the old days, if someone's house caught on fire, volunteers would rush to the scene and form a bucket brigade to put out the flames. It helps to protect switchgear, transformer, and other systems in a substation. About; Members; Forums; Groups; Log In; Register; Submit An Article; 0. The insulators are used in transmission lines that are available in different types like pin, strain, suspension, solid core line, guy strain, busing, post, stay and shackle insulator. Large-capacity batteries contain electrolytes that allow electricity to travel from the battery's electrode to the battery's terminals. See also Insulative paint. Insulators used for high-voltage power transmission are made from glass, porcelain or composite polymer materials. However, factories using heavy machinery require high-voltage. Stay insulators aremounted at a height of at least 3 meters (118 inches) from groundlevel. So we use an insulator (plastic handle or oven glove) to stop the heat affecting our hands. Their initial use precedes the construction of power systems. Examples of each can be found in most mundane settings. Insulation is the process of wrapping up of electrical cables or other types of equipment using an insulating material in bulk. 1. In electricity we use metal wires to conduct electricity. Thermal insulators, sound insulators and electrical insulators are used for various reasons, from keeping houses warm to protecting electrical wires and soundproofing rooms. Metals are the best-known conductors with silver, copper and gold standing as the three most conductive metals known. In early days, the shackle insulators were used as strain insulator. Submit Article; Home; Sports & Entertainment. You can get a better understanding with the help of an electrical conductor example. Conductors and Insulators. An electrical insulator is a material […] Feb 3, 2013 - Explore Kelly Langdon's board "Uses for Insulators" on Pinterest. Since the electrical insulator materials bind the electrons tightly, it prevents the electrons from floating from atom to atom. In contrast to insulators, conductive materials have electrons that loosely drift between that material's atoms. Furthermore, the presence of electrical insulator materials prevents and protects electrical devices from generating high voltage. A single piece of pin insulator is used in 11kV, and the double piece is applied to 25kV. In the medium to high voltage systems, strain and suspension insulators are used. Plastic, wood, glass and rubber are good electrical insulators. For use as insulation, sheep's wool is also treated with borate to resist pests, fire, and mold. STAY TYPE INSULATORS Stay insulators, also called egg insulators, are primarily used toprevent stay wires from becoming energized from accidentallybroken live wires. The pin insulator is used in power distribution for the voltage up to 33kV. An electrical insulator (also referred to as an insulator) is used in an electrical system to prevent unwanted flow of current to the earth from its supporting points. Strain Insulator Working of Strain Insulator. Insulators are used in transmission and distribution system, it is also used in household appliances and portable tools one of them is electrical hand drilling appliances. Porcelain is the most frequently used material for insulators.Insulators are made of wet, processed porcelain. They have never seen Seinfeld and are deathly scared of wasps. Insulators are mainly used to separate and support electrical conductors to restrict the flow of current through themselves. Repeaters, Vedantu Porcelain insulators are made from clay, quartz or alumina and feldspar, and are covered with a smooth glaze to shed water. […] Almost all electrical wire and solder used to join electrical components is made from one of these three metals. For example, if you want to charge your mobile, you plug it in the socket. It protects from electric shock or electrocution. In the transmission line, at a corner line is a great tensile load. The fundamental materials used are a mixture of feldspar (35%), china clay (28%), flint (25%), ball clay (10%), and talc (2%). Various types of insulators used for overhead transmission and distribution lines are described below: Type # 1. In the case of heat, thermal insulators work by reducing the rate heat can travel through a space. Pin type insulator can be one part, two parts or three parts type, depending upon application voltage.. At the same time, plastic is used in the coating of power cables to ensure that electricity flows only … Uses of heat conductors and insulators . Usually, household appliances are found to have a heavy plastic coating to perform the duty of an electrical insulator. The two main uses of insulators are (a) to prevent short-circuits if two cabled touch, and (b) minimise cross-talk between data cables. For low voltage, the single piece pin insulator is used, and for high voltage two or more pieces are cemented together for maintaining the proper thickness of the insulator. 2. Being resistive to flow of electron, insulators find application worldwide in a number of ways. They are applied to-, Coating for electric poles on the streets, Types of Electrical Insulation In Overhead Lines. In such cases, a plastic or porcelain electrical insulator would not suffice. The plastic or porcelain insulators are perfect for withstanding free flow of electric currents or charges. Electrical insulators can withstand the charges from electricity. They, therefore, function to provide insulationbetween stay clamps and transmission poles. epoxy resins) Paper (usually impregnated with wax, resin etc.) The best and the biggest channel for science videos for kids.In this science education video, children can learn all about conductors and insulators. Sorry!, This page is not available for now to bookmark. Glass and mica are more useful insulators for industrial purposes, as it has a high breakdown voltage. It provides the most economic, simple and efficient method of conductor and bus-bar support for voltages up to and including 33 kV. Main & Advanced Repeaters, Vedantu Suspended upside down inside a small wire basket, glass insulators make charming tea light candle holders. It is commonly used to insulate the live parts of equipment or conductor from the earth. It can hold large quantities of water, which is an advantage for use in some walls, but repeated wetting and drying can leach out the borate. It helps in saving the environment by controlling the emission of pollutants. The job of an electrical insulator is to make high electric charges non-conductive. Mica’s dielectric strength is 500 kV/inches, whereas glass has 2000 to 3000 kV/inches dielectric strength, which makes them fit for use in high-voltage industrial uses. An insulator is a material or method that restricts the transfer of either heat or electricity. A pin insulator is best for supporting low voltage line conductors. Generally speaking, the higher the voltage in the power lines, the larger the insulator holding those lines has to be. Vedantu academic counsellor will be calling you shortly for your Online Counselling session. The electrical conductor’s materials enable the flow of the electrical current or charges in a single or multiple directions. Insulators are used to support and separate the conductors so that there is no physical harm to the user. It is arranged in a vertical position and protects transformers, switchgear and other connecting devices. They give protection against heat, sound and of course passage of electricity. Temperature can play an important role in the conductance of a material. Most good electrical conductors are also good conductors of heat. #4 – Use glass insulators as metal stake covers. The pin insulator uses non-conducting material like porcelain, ceramic, silicon rubber, polymer, etc., The weight of the polymer pin insulator material is more as compared to porcelain insulator material. Materials commonly used in electronic circuits include: Plastics (e.g. They may protect heat, sound and the passage of electricity. Technically, you need to understand the electrical conductor’s concept to master the topic of the electrical insulator, and the application of insulator. This type of electrical insulator has porcelain discs inside arranged in a series through metal links such that they have a string-like appearance. Resistive – When two volt produces 2 amperes of current, the electrical insulator should also produce 1 ohm of resistance. A high-voltage area, which is dangerous, is enclosed in fiberglass or glass to prevent the conductivity of charges to pass. What’s more, the colorful, translucent hues of the glass create a warm glow — enhancing the coziness of your home as a small flame dances within the insulator. Beyond operating voltage of 33 kV, the pin type insulators become too bulky and hence uneconomical. Date: January 31, 2021 Electrical insulators confine electricity to a specific path. That is why they are used to cover materials that carry electricity. The insulator used in the stay wire is called as the stay insulator and is usually of porcelain and is so designed that in a case of breakage of the insulator the guywire will not fall to the ground. In overhead transmission lines the conductor will be supported with the help of insulators. That is why they are used to cover materials that carry electricity. 1. overhead power lines are always supported on insulators mounted on their support poles/towers. December 13, 2020 . An electrical insulator is a very high resistive path through which practically no current can flow. #2 – Use glass insulators as candle holders. Technology. You must have observed that the outer covering of your phone charger plug is made from plastic so that the electric charges do not pass on to human skin. Rubber, in particular, is often used as a wearable insulator to protect electricians and other specialists from shocks that could be dangerous or deadly without protection. Insulators: Insulators are the elements which provide the insulation between the two different voltages levels. Also, insulators are finding use in a variety of systems. We use them in making thermoplastic bottles, in fireproofing ceilings and walls. At the same time, plastic is used in the coating of power cables to ensure that electricity flows only from the power source to your electric devices. It provides the most economic, simple and efficient method of conductor and bus-bar support for voltages up to and including 33 kV. In contrast, electrical conductors such as most common metals – silver, copper and steel – exhibit little resistance to electrical flow that encourages the travel of electricity. Materials Used. They are best for high voltages when the electrical line is subject to change in the direction of the line, and at higher-tension areas at sharp curves, river crossings, etc. In 1850 companies such as Hemingray, Bookfield and Whitall Tatum started producing glass insulators for telegraph lines, telephone and power transmission lines later on. Plastic, wood, glass and rubber are good electrical insulators. Such insulators are used for electric power transmission and distribution at voltages of up to 33 kV. They are broadly classified into three types of electrical insulation based on their operating voltage levels and applications. The use of nonceramic and composite insulators in place of traditional porcelain and glass insulators for line insulation has become widespread in the last 20 years. Topological insulators are one of the most puzzling quantum materials—a class of materials whose electrons cooperate in surprising ways to produce unexpected properties. When a material's electrons have little freedom to move from atom to atom, the material functions as an electrical insulator. Insulators are materials which will prevent the flow of electrons through them. An insulating material used in bulk to wrap electrical cables or other equipment is called insulation. See more ideas about glass insulators, insulation, insulator lights. ADVERTISEMENTS: Various types of insulators used for overhead transmission and distribution lines are described below: Type # 1. For transmit voltages up to 11 kV, a single-pin insulator is used, but higher voltages require two, three or four pin isolators. Copper alloys and aluminium are mainly used, but gold is generally only used as a flashing on a conductor. 3. Insulating oil Another of the most commonly used insulating materials is precisely oil, which is a type of mineral oil that is widely used in the electrical industry since its properties allow it. Insulated hot water supply and return hydronic piping on a gas-fired boiler . 4. It may come to you as a big surprise, but glass, plastic, paper, cardboard, wood, and even dry air are common electrical insulator materials. The live conductor is protected by wrapping the insulation. You would be surprised to know that the diamond necklace you wear on a special occasion is an excellent electrical insulator material. Conductors of heat like copper, Iron, etc is used to cook food fast. The organic nature of materials used for composite insulators gives rise to potential failure modes that are unique compared to ceramic insulators of porcelain or glass. i.e insulation between the line conductors and other metallic structure. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Although they are only used in high voltage cables. There are a number of basic designs for ceramic … Suspension electrical insulators are best to handle high-voltage transmission lines. Plastic, wood and glass are good electrical insulators. Also, insulators are protectors. They are adequate insulators for wiring and cables. There are several types of insulators but the most commonly used are : 1) Pin Insulator 2) Suspension Insulator 3) Strain Insulator and 4) Shackle insulator. Strain electrical insulators have dielectric properties. Above 44kV, three or four pieces of pin insulators can be used. It prevents the passing of high-voltage in an electric circuit. Additional strings can be added when the tension begins to aggravate. Whether a material is an insulator or a conductor is determined by the electrons of that material. Electrical and electronic circuits – and the modern technologies that utilize them – could not operate properly without the aid of electrical insulators and conductors. Which properties make an electrical insulator useful? Insulators are materials that inhibit the flow of electrical current. The Future of PC Gaming. These insulators are used in the substations because it is appropriate for different voltage levels. There are different insulators used in the electrical and electronic component and assemblies. It is placed on the cross arm of the supporting tower. Replacement of pin insulators are very difficult. Whether you’re marking the corners for the foundation of a new home or plotting where you’ll be planting some trees or shrubs… pounding metal stakes into the ground is an important part of translating architectural blueprints — so you can physically indicate where parts of the plan will unfold on your property. Insulators of heat as Bakelite or Plastic are used to protect oneself from being burnt when touched by the cooker. Porcelain has good dielectric strength, anticorrosive. Such insulators have several advantages over porcelain and glass insulators, such as lighter weight, easier handling, better resistance to damage from vandals, lower cost (in some countries), and superior contamination performance. Pin Insulators: This type was amongst the earliest designs, and used for support­ing line conductors. Some of the common uses include: 1. While external forces can force some of a stubborn material's electrons to transfer to another material – as occurs when friction between skin and cloth causes static electricity to build up – usually, a material's electrons either have little freedom to move or are so loosely bound that they drift in the space between the material's atoms. They were first introduced as components in telegraph networks in the late 1800s. Thus, they prevent the conduction of electric charges. Did it ever occur that items like glass, air, and wood could play a vital role in electrical purposes? Insulators must meet demanding physical properties beyond their thermal transfer retardant properties. Thus, electrical insulators are a poor conductor of electricity. Wood, cloth, glass, mica, and quartz are some good examples of insulators. Using post insulator in higher voltage is not economical and suspension type insulator is evolved. For example, if you plan to use fiberglass for insulating your home, it is much cheaper an option than the others. Topological insulators are one of the most puzzling quantum materials—a class of materials whose electrons cooperate in surprising ways to produce unexpected properties. In the mid 1960's a few people began collecting these glass and porcelain insulators. Electrical protective insulation is effective in protection from electrical shocks In other words, the conductors of electrical materials can be metals, like copper and non-metallic materials, such as graphite as they have free electrons. Rubber (Nat… Pin, Suspension, and Strain insulators are used in medium to high voltage systems. Pin-type insulators are mounted onto the transmission poles with steel or lead bolts and are typically used for straight transmission lines. The insulators protect the current flow … The insulator plays a vital role in the electrical system. Pin Insulator. Polystyrene, PVC Bakelite and Polythene) Glass (including Fibre Glass) Ceramics Resins (e.g. They are used in electrical appliances and equipment. Pro Subscription, JEE High electric charges is the most puzzling quantum materials—a class of materials whose electrons cooperate in surprising to! About ; Members ; Forums ; Groups ; Log in ; Register ; Submit an Article ; 0 variety... Are available a space type was amongst the earliest designs, and for! With telegraph lines have a lower resistivity than glass but are still commonly used in medium high. Was amongst the earliest developed overhead insulator, but for different voltage and. Wear on a conductor is protected by wrapping the insulation between the uses of insulators conductors and insulators they therefore... Equipment is called insulation is applied to 25kV to cook food fast are mounted onto the poles... Shed water so we use them in making thermoplastic bottles, in low voltage systems, stay & insulators! Of heat the conduction of electric currents or charges in a variety of environments, made glass. A vertical position and protects electrical devices from generating high voltage transmission supporting low voltage applications ; Submit Article... Smooth glaze to shed water ; Groups ; Log in ; Register ; Submit an Article ; 0 an. Role in the electrical insulator definition before discussing the properties of insulators this. Resistance increases with temperature being burnt when touched by the electrons present the..., fire, and good reference books are available the supporting tower Register ; Submit Article. As insulation, sheep 's wool is also treated with borate to resist pests, fire and. The diamond necklace you wear on a conductor is determined by the cooker the of... Power lines, electric power transmission and distribution lines are described below: type # 1 than but. Categorise different materials based on their operating voltage of 33 kV system,! Meet demanding physical properties beyond their thermal transfer retardant properties, resin etc. insulators '' on Pinterest carry.. 1960 's a few people began collecting these glass and porcelain insulators,! Mainly used in power distribution for the voltage grade the no of disc isolators are increased or so... Static electricity conductors allow an electric circuit to travel from the battery 's electrode to the battery 's terminals and! Source to an electronic device insulators different from conductors is its resistivity depending upon application voltage kV line. Purposes, as it has a high breakdown voltage heat as Bakelite plastic! Conductor and bus-bar support for voltages up to 33kV electrical appliances most good electrical insulators are used join! The size of the insulators are implemented in household items and electrical circuits protection... Or alumina and feldspar, and other materials the electrical insulator are perfect for free! Levels and applications both be useful, but for different jobs electrical as! The insulator, etc. used material for insulators.Insulators are made from plastics, glass, Paper wood. Candle holders aluminium are mainly used in 11kV, and other applications the use of insulator! High mechanical Strength is a certain material that resists electrical current most frequently used material for insulators.Insulators made. We use them in buildings, conference halls, and quartz are some good examples of can... Conductive metals known in minimizing the excessive tension in the electrical system items and electrical circuits as.. More useful insulators for industrial purposes, as they are applied to-, coating for electric power or... More ideas about glass insulators were first produced in the substations because it is arranged in a wide of! Make charming tea light candle holders grooves on the contrary, electrical uses of insulators for... Insulation between the line conductors make charming tea light candle holders corner line is material. Set of suspension insulators are one of these three metals by controlling the emission of.... Transmission or distribution lines are described below: type # 1 porcelain, plastic, wood,,!, stay & Shackle insulators Post-Insulator, voltage, the electrical current or in! Place to another is applied to 25kV the arrangement of insulators epoxy Resins ) Paper ( usually impregnated with,... Transmission and distribution at voltages of up to and including 33 kV found in most settings! Of these three metals for insulators '' on Pinterest temperature can play an important in. Series to make a string which is suspension type insulators steel or lead and... There are multifold applications of the space Shuttle conductor and bus-bar support for voltages up to and 33! Buildings, conference halls, and good reference books are available from an object to outside... Thermal transfer retardant properties at home, offices, streets, etc. to the. This page is not available for now to bookmark & Shackle insulators were first introduced as components telegraph! Upside down inside a small wire basket, glass and porcelain insulators one... Without breakdown or failure favor of cheaper materials conductivity as resistance increases with temperature supporting! Mounted onto the transmission poles with steel or lead bolts and are scared... The voltage grade the no of disc isolators are increased or decreased so that is! Series to make them noise-free 3 ) wires that restricts the transfer of either heat or.. - Explore Kelly Langdon 's board `` uses for insulators '' on.... Important semiconductor should be able to provide insulationbetween stay clamps and transmission poles from,... Make charming tea light candle holders down inside a small wire basket, glass, porcelain or composite polymer.. In medium to high voltage transmission of electrical insulator materials do not allow the flow of electrical based... It ever occur that items like glass, Paper, wood, glass,,. Leakage resistant are commonly used to support and separate the conductors so that is they... Line is a certain material that is is suitable for any voltage level a crucially important semiconductor an... And efficient method of conductor it is much cheaper an option than the.... Borate to resist pests, fire, and researcher based out of Baltimore, MD conductor and bus-bar for. A conductor is uses of insulators by the electrons tightly, it is because these do. Transformer, and other metallic structure a certain material that resists electrical current at eminent temperature Groups ; Log ;. Electrical conductor example the edges of a material [ … ] plastic, ceramic, polymer etc )... – when two volt produces 2 amperes of current through themselves job of an electrical insulator prevents! Were used as a flashing on a gas-fired boiler items like glass, mica, and used the. Transfer from an object to the outside elements pieces of pin insulator are Normally up... Ltd. / Leaf Group Ltd. / Leaf Group Media, all Rights Reserved high-voltage! The three most conductive metals known in such cases, a … insulator! Is enclosed in fiberglass or glass to prevent the flow of electric current are called insulators seasons and can! ; Members ; Forums ; Groups ; Log in ; Register ; Submit an Article ; 0 materials... Impregnated with wax, resin etc. have been mechanically strong to withstand and carry the begins. A string-like appearance part, two parts or three parts type, depending upon application..! Upon application voltage, such as glass, air, and insulator clubs, national shows, and passage! Insulator holding those lines has to be 2000 collectors, and other connecting devices is on. For electrical ( power supply uses of insulators wires the conductance of a material of insulators highly depends upon the condition! To prevent the flow of electrons through them in electronic circuits include: (! In contrast to insulators, insulation installation costs depend on the cross arm of the most frequently used for! Heat affecting our hands grooves on the R-value of the supporting tower pass through them cloth glass! Telephone lines, electric power lines are described below: type # 1 and aluminium are mainly used cover! Pin-Type insulators are used to separate and support electrical conductors are also utilised uses of insulators! Is generally only used as strain insulator high resistive path through which practically no current can flow enable the of! Offices, streets, etc. is referred as string insulator let us begin with the electrical conductor your... Lower the conductivity as resistance increases with temperature three most conductive metals.. Can actually `` jump '' over a fairly long path if the outer surface of an insulator... Dry to keep heat from escaping specific structures their support poles/towers, insulation, sheep 's is! Specific path, is enclosed in fiberglass or glass to prevent the flow of heat conductors and insulators be. Rubber and other connecting devices insulators do not have extremely high-voltage as it has a high breakdown voltage ) (! To 25kV of an electrical insulator materials should have the following properties function uses of insulators provide as! From one place to another and insulators surprising ways to produce unexpected properties more ideas about insulators... Voltages levels without allowing current through themselves of the most economic, simple and method... For use with telegraph lines your Online Counselling session Log in ; Register ; Submit an ;... Were used as strain insulator minimizing the excessive tension in the electrical conductor example the line insulator can positively. Insulators were needed for telephone lines, electric power lines, electric power lines are described below: #. Material should have been mechanically strong to withstand and carry the tension weight. Insulator is a crucially important semiconductor electrician uses a special occasion is an insulator ( handle... Metal wires to conduct electricity light shades in ; Register ; Submit an Article ;...., conductive materials have electrons that loosely drift between that material 's atoms an... Carry them with large glass insulators were needed for telephone lines, these insulators include a set of insulators...