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joeypetter · 1 year

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Composite Insulators Market 2022 | Global Business, Share, Trend and SWOT Analysis 2030 | By R&I

Reports & Insights has freshly issued a new report titled “Composite Insulators Market: Opportunity Analysis and Future Assessment 2022-2030” which speaks about the market size, market potential and comprehensive understanding of the statistics concerned with the development of the respective market. The market analysts estimate that the Composite Insulators Market size will elevate from XXX in 2022 to XXX by the year 2030, at an estimated CAGR of XX. The base year considered for the study is 2020, and the market size is projected from 2022 to 2030.

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Composite Insulators Introduction

Insulators basically serve its utility in electrical equipment with a view to sustain and differentiate electrical conductors without enabling current to percolate through the insulators. Silicone rubber is one of the most comprehensively utilized polymeric insulation materials for high tension products. Particularly, the composite insulators are a unique kind of insulation control that further holds a crucial role in overhead transmission lines.

Composite insulators are also known as non-porcelain insulators, synthetic insulators, rubber insulators, polymer insulators, among others. Notably, composite insulators are light in weight, minor in size, reliable to transport, light in structure, easy to maintain and easy to install. Such factors aid composite insulators to gain traction all across the markets. In addition to that, the composite insulator has excellent fouling resistance and robust fouling flash voltage resistance. Notably, the wet withstand voltage and fouling resistance voltage of composite insulators are 2 to 2.5 times that of porcelain insulators with the equal creepage distance.

Also, there is no need for cleansing and secure operation in severely polluted areas. Owing to such factors, the composite insulators are witnessing higher demand all around the world. Moreover, the soaring investments from governments and regulatory authorities to revamp the maturing grid networks across established nations together with the swift adoption of smart grid technology, worldwide, is further projected to boost the growth of the global composite insulators market in the coming years.

Wish to Know More About the Study? Click here to get a Report Description: https://reportsandinsights.com/report/composite-insulators-market

Composite Insulators Market Segmentation

The composite insulators market is segmented on the basis of voltage, application, product, rating, installation, end use, and region.

By Voltage

High Voltage

Medium Voltage

Low Voltage

By Application

Cables & Transmission Lines

Switchgears

Transformers

Bus Bars

Others

By Product

Pin Insulators

Suspension Insulators

Shackle Insulators

Other Insulators

By End Use

Residential

Commercial & Industrial

Utilities

By Rating

<11 KV

11 KV

22 KV

33 KV

5 KV

145 KV

220 KV

400 KV

800 KV

1200 KV

By Installation

Distribution

Transmission

Substation

Railways

Others

By Region

North America

Latin America

Europe

Asia Pacific

Middle East

Africa

Composite Insulators Market Key Players

Some of the key participating players in composite insulators market are:

Siemens Energy

ABB

Toshiba

Aditya Birla

NGK Insulators

Hubbell

Bharat Heavy Electricals Limited

LAPP Insulators

Maclean-Fogg

Seves Group

TE Connectivity

To view Top Players, Segmentation and other Statistics of Composite Insulators Market Industry, Get Sample Report @: https://reportsandinsights.com/sample-request/2534

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kabirsales-blog · 7 years

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zoeyisagirl · 3 years

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What are the types of disc insulators?

Insulators have many types, like shackle, strain, suspension and pin insulator. The insulators work to provide necessary insulation between line conductors and supports and thus prevent any leakage current from conductors to earth which is as important as conductors in the external overhead electrical system. Further information is as following.

A high-quality disc insulator must have high mechanical strength in order to withstand conductor load, wind load etc as well as high electrical resistance of insulator material in order to avoid leakage currents to earth. Besides that, they should be made by high relative permittivity of insulator material in order that dielectric strength is high. The insulator material be non-porous, free from impurities and cracks otherwise the permittivity will be lowered with a high ratio of puncture strength to flashover.

The most commonly used material for insulators of overhead lines is ceramics, but glass, talc and materials with special components are also used to a certain extent. Porcelain is made by firing a mixture of kaolin, feldspar and Shi Ying at high temperature. It is mechanically stronger than glass, and has less trouble in leaking and is less affected by temperature changes.

Different types of insulators in transmission lines:

The most commonly used are pin type, suspension type, strain insulator and shackle insulator.

NO.1 pin insulators

As the first overhead insulator, pin insulators are commonly used among transmission lines with 33kv voltage or lower voltage. Pin insulators can be divided into ordinary type (single umbrella), double umbrella type or three umbrella type, and the choice of these insulators depend mainly on the line voltage. In 11 kV power system, we usually use ordinary pin insulator, that is, the whole pin insulator has only one umbrella canopy.

There are two main reasons for the design of pin insulator umbrella skirt. First of all, since the leakage path of an insulator is through its surface, the leakage distance can be extended by increasing the vertical length of its surface area in the manufacturing process of an insulator. In other words, providing one, two or more canopy or umbrella skirts on the insulator body can make it obtain a longer creep distance. In addition, beside increasing creepage distance, the insulator skirt design has another purpose: when it rains, the outer surface of the umbrella skirt will be wet by rain, but the inner surface will remain dry and non-conductive, thus interrupting the conduction of current on the wet pin insulator surface.

In 33 kv and 66 kV high voltage power system, ordinary pin insulator is difficult to perform the task of high voltage porcelain. Because the higher the voltage, the thicker the insulation layer required to ensure adequate insulation during operation. In this case, power systems prefer multi-umbrella pin insulators, in which multiple umbrella skirts are fastened together to form a complete insulator unit. And 33 kv power system generally uses double umbrella type pin insulator, 66 kV power generally uses three umbrella type pin insulator.

NO.2 suspension insulator

As we mentioned above, with the voltage increasing the costs of using ordinary pin insulator are also growing. Therefore, it is not economical to apply pin insulator in a high voltage transmission line. But suspension insulator could work in transmission lines with a high voltage. Suspension insulator is commonly used in high voltage transmission lines. Suspension insulators can be divided into disk type suspension insulators and rod type suspension insulators. Disk-type suspension insulators are the most widely used insulators in transmission lines. Rod type suspension insulators have been widely used in Germany and other countries.

Suspension insulators consist of several porcelain plates, which are connected in series by metal links in the form of strings. The conductor is carried by the bottom insulator, while the top insulator is fixed to the cross arm of the tower. A single insulator plate can be used for low voltage lines, while multiple insulator plates connected in series can be used for higher voltage lines. For example, six 11kV insulator plates connected in series can be used for 66kV transmission and distribution lines.

NO.3 strain insulator

Strain insulator is an important part of transmission line, including porcelain strain insulator, composite strain insulator and glass strain insulator. Strain insulators can effectively isolate conductors from the ground based on keeping the position of each conductor unchanged, futher to enhance the safety of transmission line environment.

In the daily operation and maintenance of transmission lines, the geographical environment and weather conditions of transmission lines are complex and changeable, and insulators will inevitably be damaged. Tension insulator is the most common product in transmission lines, which is often used together with matching hardware fittings to achieve the function of high voltage electrical porcelain insulation. In addition, in actual business, according to the construction needs of power system, the construction party also combines several tension insulators to meet the tension requirements of transmission lines.

NO.4 shackle insulator

Shackle insulators (also known as spool insulators) are usually used in low voltage transmission lines. It can be used in both the horizontal or vertical positions. With the increasing number of underground cables for distribution purpose, the application of such insulator has decreased rapidly.

If you are looking for a disc insulator supplier, we are looking forward to be your first choice as JiangDong Group Co,Ltd, a professional insulator manufacturer, has engaged in telecom, power, renewable energy for 26 years. If you have any need, please feel free to contact us.

#insulators

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jayashreeblr-blog · 5 years

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Aging equipment, increased demand, capacity bottlenecks, along with rising emphasis toward the capacity addition of power generation will enhance the industry growth of electric insulators.

Electric Insulator MarketElectric Insulator Market is segmented by the material, voltage, application, product, end use, rating, installation and region. Based on material segment porcelain electric insulators has dominated the global electric insulator market in 2017. Ability to offer optimum mechanical strength and withstanding considerable stress resistance are the key factors supporting the product’s dominance across the industry landscape among other segments. Moreover, the growing prominence of polymeric counterparts is expected to offer a competitive edge to these insulators.

Under the product segment, pin electric insulator held highest market share in 2017. These insulators find applications across distribution and sub-transmission lines, in form of single-piece or multi-piece, depending on the voltage of application. High anti-fog performance, ease of manufacturing, and operational flexibility are also some of the underlying parameters that support the product penetration of pin electric insulator.

Electric Insulator are be also segmented based on applications, where the transformers segment held the highest market share primarily driven by rising concerns over power thefts & protection along with increased focus on real-time monitoring of power networks.

Asia-Pacific among other regions held the largest Electric Insulator Market share in 2017 and is also expected to have a high growth rate in the forecast period with China being a major contributor to the overall market. Favorable government reforms toward energy efficiency along with strengthening focus on up-gradation and expansion of the existing R&D infrastructure will propel the market growth. For instance, in 2016 the State Grid Corporation of China (SGCC) announced plans to expand investment in the country’s electrical transmission infrastructure by 28% over the period of next five years.

Key player across the electric insulator industry are General Electric, ABB, Siemens, Hubbell Lapp Insulators, and NGK Insulators. Major industry participants are focusing on design innovations and expansion of the product line as part of a strategy to meet the regulatory standards and enhance the market presence. Furthermore, electric insulator manufacturers are undertaking M&A activities to expand their global footprint.

For More Information Visit

https://www.maximizemarketresearch.com/market-report/electric-insulator-market/11647/

Market Scope High-Voltage Switchgear Market:

High-Voltage Switchgear Market By Material

Ceramic/Porcelain

Glass

Composite

High-Voltage Switchgear Market By Voltage

High

Medium

Low

High-Voltage Switchgear MarketBy Application

Cables and transmission lines

Switchgears

Transformers

Busbars

Others

High-Voltage Switchgear Market By Product

Suspension

Shackle

Others

High-Voltage Switchgear Market By End-Use

Residential

Commercial & Industrial

Utilities

High-Voltage Switchgear Market By Rating

<11 kV

11 kV

22 kV

33 kV

72.5 kV

145 kV

220 kV

400 kV

800 kV

1200 kV

High-Voltage Switchgear Market By Installation

Distribution

Transmission

Substation

Railways

Others

High-Voltage Switchgear Market By Geography

North America

Europe

Asia-Pacific

Middle East & Africa

Latin America

Key Players operating in the High-Voltage Switchgear Market:

General Electric

ABB

Siemens

Hubbell Lapp Insulators

NGK Insulators

Aditya Birla.

Maclean Fogg

Elsewedy Electric

Seves Group

BHEL

TE Connectivity

This Report Is Submitted By @Maximize Market Research Company

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siva3155 · 5 years

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300+ TOP TRANSMISSION & DISTRIBUTION Objective Questions and Answers

TRANSMISSION & DISTRIBUTION Multiple Choice Questions :-

1. By which of the following systems electric power may be transmitted ? (a) Overhead system (b) Underground system (c) Both (a) and (b) (d) None of the above Ans: c 2. are the conductors, which connect the consumer's terminals to the distribution (a) Distributors (b) Service mains (c) Feeders (d) None of the above Ans: b 3. The underground system cannot be operated above (a) 440 V (b) 11 kV (c) 33 kV (d) 66 kV Ans: d 4. Overhead system can be designed for operation up to (a) 11 kV (b) 33 kV (c) 66 kV (d) 400 kV Ans: c 5. If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the corresponding size of conductor will be most economical. This statement is known as (a) Kelvin's law (b) Ohm's law (c) Kirchhoffs law (d) Faraday's law (e) none of the above Ans: a 6. The wooden poles well impregnated with creosite oil or any preservative compound have life (a) from 2 to 5 years (b) 10 to 15 years (c) 25 to 30 years (d) 60 to 70 years Ans: c 7. Which of the following materials is not used for transmission and distribution of electrical power ? (a) Copper (b) Aluminium (c) Steel (d) Tungsten Ans: d 8. Galvanised steel wire is generally used as (a) stay wire (b) earth wire (c) structural components (d) all of the above Ans: d 9. The usual spans with R.C.C. poles are (a) 40—50 meters (b) 60—100 meters (c) 80—100 meters (d) 300—500 meters Ans: c 10. The corona is considerably affected by which of the following ? (a) Size of the conductor (b) Shape of the conductor (c) Surface condition of the conductor (d) All of the above Ans: d 11. Which of the following are the constants of the transmission lines ? (a) Resistance (b) Inductance (c) Capacitance (d) All of the above Ans: d 12. 310 km line is considered as (a) a long line (b) a medium line (c) a short line (d) any of the above Ans: a 13. The phenomenon qf rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the (a) Seeback effect (b) Ferranti effect (c) Raman effect (d) none of the above Ans: b 14. The square root of the ratio of line impedance and shunt admittance is called the (a) surge impedance of the line (b) conductance of the line (c) regulation of the line (d) none of the above Ans: a 15. Which of the following is the demerit of a 'constant voltage transmission system' ? (a) Increase of short-circuit current of the system (b) Availability of steady voltage at all loads at the line terminals (c) Possibility of better protection for the line due to possible use of higher terminal reactants (d) Improvement of power factor at times of moderate and heavy loads (e) Possibility of carrying increased power for a given conductor size in case of long-distance heavy power transmission Ans: a 16. Low voltage cables are meant for use up to (a)l.lkV (b)3.3kV (c)6.6kV (d)llkV Ans: e 17. The operating voltage of high voltage cables is up to (a)l.lkV (b)3.3kV (c)6.6kV (d)llkV Ans: d 18. The operating voltage of supertension cables is up to (a) 3.3 kV (b) 6.6 kV (c) 11 kV (d) 33 kV Ans: d 19. The operating voltage of extra high tension cables is upto (a) 6.6 kV (b) 11 kV (c) 33 kV (d) 66 kV (e) 132 kV Ans: d 20. Which of the following methods is used for laying of underground cables ? (a) Direct laying (b) Draw-in-system (c) Solid system (d) All of the above Ans: d 21. Which of the following is the source of heat generation in the cables ? (a) Dielectric losses in cable insulation (b) losses in the conductor (c) Losses in the metallic sheathings and armourings (d) All of the above Ans: 22. Due to which of the following reasons the cables should not be operated too hot ? (a) The oil may loose its viscosity and it may start drawing off from higher levels (b) Expansion of the oil may cause the sheath to burst (c) Unequal expansion may create voids in the insulation which will lead to ionization (d) The thermal instability may rise due to the rapid increase of dielectric losses with temperature (e) All of the above Ans: e 23. Which of the following D.C. distribution system is the simplest and lowest in first cost ? (a) Radial system (b) Ring system (c) Inter-connected system (d) None of the above Ans: a 24. A booster is a (a) series wound generator (b) shunt wound generator (c) synchronous generator (d) none of the above Ans: a 25. Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system ? (a) Circulating current method (b) Thevenin's theorem (c) Superposition of currents (d) Direct application of Kirehhoffs laws (e) All of the above Ans: e 26. Which of the following faults is most likely to occur in cables ? (a) Cross or short-circuit fault (b) Open circuit fault (c) Breakdown of cable insulation (d) All of the above Ans: 27. The cause of damage to the lead sheath of a cable is (a) crystallisation of the lead through vibration (b) chemical action on the lead when buried in the earth (c) mechanical damage (d) all of the above Ans: 28. The voltage of the single phase supply to residential consumers is (a) 110 V (b) 210 V (c) 230 V (d) 400 V Ans: c 29. Most of the high voltage transmission lines in India are (a) underground (b) overhead (c) either of the above (d) none of the above Ans: b 30. The distributors for residential areas are (a) single phase (b) three-phase three wire (c) three-phase four wire (d) none of the above Ans: c 31. The conductors of the overhead lines are (a) solid (b) stranded (c) both solid and stranded (d) none of the above Ans: 32. High voltage transmission lines use (a) suspension insulators (b) pin insulators (c) both (a) and (b) (d) none of the above Ans: a 33. Multicore cables generally use (a) square conductors (b) circular conductors (c) rectangular conductors (d) sector-shaped conductors (e) none of the above Ans: d 34. Distribution lines in India generally use (a) wooden poles (b) R.C.C. poles (c) steel towers (d) none of the above Ans: b 35. The material commonly used for insulation in high voltage cables is (a) lead (b) paper (c) rubber (d) none of the above Ans: b 36. The loads on distributors systems are generally (a) balanced (b) unbalanced (c) either of the above (d) none of the above Ans: b 37. The power factor of industrial loads is generally (a) unity (b) lagging (c) leading (d) zero Ans: b 38. Overhead lines generally use (a) copper conductors (b) all aluminium conductors (c) A.C.S.R. conductors (d) none of these Ans: c 39. In transmission lines the cross-arms are made of (a) copper (b) wood (c) R.C.C. (d) steel Ans: d 40. The material generally used for armour of high voltage cables is (a) aluminium (b) steel (c) brass (d) copper Ans: b 41. Transmission line insulators are made of (a) glass (b) porcelain (c) iron (d) P.V.C. Ans: 42. The material commonly used for sheaths of underground cables is (a) lead (b) rubber (c) copper (d) iron Ans: a 43. The minimum clearance between the ground and a 220 kV line is about (a) 4.3 m (b) 5.5 m (c) 7.0 m (d) 10.5 m Ans: c 44. The spacing between phase conductors of a 220 kV line is approximately equal to (a) 2 m (b) 3.5 m (c) 6 m (d) 8.5 m Ans: c 45. Large industrial consumers are supplied electrical energy at (a) 400 V (b) 11 kV (c) 66 kV (d) 400 kV Ans: c 46. In a D.C. 3-wire distribution system, balancer fields are cross-connected in order to (a) boost the generated voltage (b) balance loads on both sides of the neutral (c) make both machine^ run as unloaded motors (d) equalize voltages on the positive and negative outers Ans: 47. In a D.C. 3-wire distributor using balancers and having unequal loads on the two sides (a) both balancers run as generators (b) both balancers run as motors (c) balancer connected to lightly- loaded side runs as a motor (d) balancer connected to heavily- loaded side runs as a motor Ans: 48. Transmitted power remaining the same, if supply voltage of a D.C. 2-wire feeder is increased 100 percent, saving in copper is (a) 25 percent (b) 50 percent (c) 75 percent (d) 100 percent Ans: b 49. A uniformly-loaded D.C. distributor is fed at both ends with equal voltages. As compared to a similar distributor fed at one end only, the drop at the middle point is (a) one-fourth (b) one-third (c) one-half (d) twice (e) none of the above Ans: a 50. As compared to a 2-wire D.C. distributor, a 3-wire distributor with same maximum voltage to earth uses only (a) 31.25 percent of copper (b) 33.3 percent of copper (c) 66.7 percent of copper (d) 125 percent of copper Ans: a 51. Which of the following is usually not the generating voltage ? (a) 6.6 kV (b) 8.8 kV (c) 11 kV (d) 13.2 kV Ans: b 52. For an overhead line, the surge impedance is taken as (a) 20-30 ohms (b) 70—80 ohms (c) 100—200 ohms (d) 500—1000 ohms (e) none of the above Ans: c 53. The presence of ozone due to corona is harmful because it (a) reduces power factor (b) corrodes the material (c) gives odour (d) transfer energy to the ground (e) none of the above Ans: b 54. A feeder, in a transmission system, feeds power to (a) distributors (b) generating stations (c) service mains (d) all of the above Ans: a 55. The power transmitted will be maximum when (a) corona losses are minimum (b) reactance is high (c) sending end voltage is more (d) receiving end voltage is more Ans: c 56. A 3-phase 4 wire system is commonly used on (a) primary transmission (b) secondary transmission (c) primary distribution (d) secondary distribution Ans: d 57. Which of the following materials is used for overhead transmission lines ? (a) Steel cored aluminium (b) Galvanised steel (c) Cadmium copper (d) Any of the above Ans: d 58. Which of the following is not a constituent for making porcelain insulators ? (a) Quartz (b) Kaolin (c) Felspar (d) Silica Ans: d 59. There is a greater possibility of occurence of corona during (a) dry weather (b) winter (c) summer heat (d) humid weather (e) none of the above Ans: d 60. Which of the following relays is used on long transmission lines ? (a) Impedance relay (b) Mho's relay (c) Reactance relay (d) None of the above Ans: b 61. The steel used in steel cored conductors is usually (a) alloy steel (b) stainless steel (c) mild steel (d) high speed steel (e) all of the above Ans: c 62. Which of the following distribution systems is more reliable ? (a) Radial system (b) Tree system (c) Ring main system (d) All are equally reliable Ans: c 63. Which of the following characteristics should the line supports for transmission lines possess ? (a) Low cost (b) High mechanical strength (c) Longer life (d) All of the above Ans: d 64. Transmission voltage of ll kV is normally used for distances upto (a) 20—25 km (b) 40—50 km (c) 60—70 km (d) 80—100 km Ans: a 65. Which of the following regulations is considered best? (a) 50% (b) 20% (c) 10% (d) 2% Ans: d 66. Skin effect is proportional to (a) (conductor diameter) (b) (conductor diameter) (c) (conductor diameter) (d) (conductor diameter) (e) none of the above Ans: c 67. A conductor, due to sag between two supports, takes the form of (a) semi-circle (b) triangle (c) ellipse (d) catenary Ans: d 68. In AC.S.R. conductors, the insulation between aluminium and steel conductors is (a) insulin (b) bitumen (c) varnish (d) no insulation is required Ans: d 69. Which of the following bus-bar schemes has the lowest cost ? (a) Ring bus-bar scheme (b) Single bus-bar scheme (c) Breaker and a half scheme (d) Main and transfer scheme Ans: b 70. Owing to skin effect (a) current flows through the half cross-section of the conductor (b) portion of the conductor near the surface carries more current and core of the conductor carries less current (c) portion of the conductor near the surface carries less current and core of the conductor carries more cur¬rent (d) any of the above (e) none of the above Ans: b 71. By which of the following methods string efficiency can be improved ? (a) Using a guard ring (b) Grading the insulator (c) Using long cross arm (d) Any of the above (e) None of the above Ans: d 72. In aluminium conductors, steel core is provided to (a) compensate for skin effect (b) neutralise proximity effect (c) reduce line inductance (d) increase the tensile strength Ans: d 73. By which of the following a bus-bar is rated ? (a) Current only (b) Current and voltage (c) Current, voltage and frequency (d) Current, voltage, frequency and short time current Ans: d 74. A circuit is disconnected by isolators when (a) line is energized (b) there is no current in the line (c) line is on full load (d) circuit breaker is not open Ans: b 75. For which of the following equipment current rating is not necessary ? (a) Circuit breakers (b) Isolators (c) Load break switch (d) Circuit breakers and load break switches Ans: b 76. In a substation the following equipment is not installed (a) exciters (b) series capacitors (c) shunt reactors (d) voltatre transformers Ans: a 77. jCorona usually occurs when the electrostatic stress in air around the conductor exceeds (a) 6.6 kV (r.m.s. value)/cm (b) 11 kV (r.m.s. value)/cm (c) 22 kV (maximum value)/cm (d) 30 kV (maximum value)/cm Ans: d 78. The voltage drop, for constant voltage transmission is compensated by installing (a) inductors (b) capacitors (c) synchronous motors (d) all of above (e) none of the above Ans: c 79. The use of strain type insulators is made where the conductors are (a) dead ended (b) at intermediate anchor towers (c) any of the above (d) none of the above Ans: c 80. The current drawn by the line due to corona losses is (a) non-sinusoidal (b) sinusoidal (c) triangular (d) square Ans: a 81. Pin type insulators are generally not used for voltages beyond (a) 1 kV (b) 11 kV (c) 22 kV (d) 33 kV Ans: d 82. Aluminium has a specific gravity of (a) 1.5 (b) 2.7 (c) 4.2 (d) 7.8 Ans: b 83. For transmission of power over a distance of 200 km, the transmission voltage should be (a) 132 kV (b) 66 kV (c) 33 kV (d) 11 kV Ans: a 84. For aluminium, as compared to copper, all the following factors have higher values except (a) specific volume (6) electrical conductivity (c) co-efficient of linear expansion (d) resistance per unit length for same cross-section Ans: b 85. Which of the following equipment, for regulating the voltage in distribution feeder, will be most economical ? (a) Static condenser (b) Synchronous condenser (c) Tap changing transformer (d) Booster transformer Ans: d 86. In a tap changing transformer, the tappings are provided on (a) primary winding (b) secondary winding (c) high voltage winding (d) any of the above Ans: c 87. Constant voltage transmission entails the following disadvantage (a) large conductor area is required for same power transmission (b) short-circuit current of the system is increased (c) either of the above (d) none of the above Ans: b 88. On which of the following factors skin effect depends ? (a) Frequency of the current (b) Size of the conductor (c) Resistivity of the conductor material (d) All of the above Ans: d 89. The effect of corona can be detected by (a) presence of ozone detected by odour (b) hissing sound (c) faint luminous glow of bluish colour (d) all of the above Ans: d 90. For transmission of power over a distance of 500 km, the transmission voltage should be in the range (a) 150 to 220 kV (b) 100 to 120 kV (c) 60 to 100 kV (d) 20 to 50 kV Ans: a 91. In the analysis of which of the following lines shunt capacitance is neglected ? (a) Short transmission lines (b) Medium transmission lines (c) Long transmission lines (d) Medium as well as long transmission lines Ans: a 92. When the interconnector between two stations has large reactance (a) the transfer of power will take place with voltage fluctuation and noise (b) the transfer of power will take place with least loss (c) the stations will fall out of step be¬cause of large angular displacement between the stations (d) none of the above Ans: c 93. The frequency of voltage generated, in case of generators, can be increased by (a) using reactors (b) increasing the load (c) adjusting the governor (d) reducing the terminal voltage (e) none of the above Ans: c 94. When an alternator connected to the bus-bar is shut down the bus-bar voltage will (a) fall (b) rise (c) remain unchanged (d) none of the above Ans: c 95. The angular displacement between two interconnected stations is mainly due to (a) armature reactance of both alternators (b) reactance of the interconnector (c) synchronous reactance of both the alternators (d) all of the above Ans: a 96. Electro-mechanical voltage regulators are generally used in (a) reactors (b) generators (c) transformers (d) all of the above Ans: b 97. Series capacitors on transmission lines are of little use when the load VAR requirement is (a) large (b) small (b) fluctuating (d) any of the above Ans: b 98. The voltage regulation in magnetic amplifier type voltage regulator is effected by (a) electromagnetic induction (b) varying the resistance (c) varying the reactance (d) variable transformer Ans: c 99. When a conductor carries more current on the surface as compared to core, it is due to (a) permeability variation (b) corona (c) skin effect (d) unsymmetrical fault (e) none of the above Ans: c 100. The following system is not generally used (a) 1-phase 3 wire (b) 1-phase 4 wire (c) 3-phase 3 wire (d) 3-phase 4 wire Ans: a 101. The skin effect of a conductor will reduce as the (a) resistivity of conductor material increases (b) permeability of conductor material increases (c) diameter increases (d) frequency increases Ans: a 110. When a live conductor of public electric supply breaks down and touches the earth which of the following will happen ? (a) Current will flow to earth (b) Supply voltage will drop (c) Supply voltage will increase (d) No current will flow in the conductor (e) None of the above Ans: a TRANSMISSION & DISTRIBUTION Mcqs Interview Questions Pdf :: Read the full article

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mjagtap · 4 years

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Electric Insulator Market – Industry Analysis and Forecast (2019-2027)

Electric Insulator Market is estimated to reach US$ XX Bn by 2027 in terms of revenue at CAGR of XX % in the forecasting Period. The report includes the analysis of impact of COVID-19 lock-down on the revenue of market leaders, followers, and disrupters. Since lock down was implemented differently in different regions and countries, impact of same is also different by regions and segments. The report has covered the current short term and long term impact on the market, same will help decision makers to prepare the outline for short term and long term strategies for companies by region. Growing investments toward the refurbishment of aging grid infrastructure across developed economies along with the acceptance of smart grid technology will drive the global electric insulators market. Sizable expenditure toward modernization of electrical infrastructure along with rapid urbanization will further drive the overall Electric Insulator Market. According to the recent report of World Energy Outlook, an investment of more than USD 3.4 trillion has been made to contribute to the refurbishment and replacement of existing assets showing the huge demand and opportunities for market growth. Aging equipment, increased demand, capacity bottlenecks, along with rising emphasis toward the capacity addition of power generation will enhance the industry growth of electric insulators. Electric Insulator Market is segmented by the material, voltage, application, product, end use, rating, installation and region. Based on material segment porcelain electric insulators has dominated the global electric insulator market in 2017. Ability to offer optimum mechanical strength and withstanding considerable stress resistance are the key factors supporting the product’s dominance across the industry landscape among other segments. Moreover, the growing prominence of polymeric counterparts is expected to offer a competitive edge to these insulators. Under the product segment, pin electric insulator held highest market share in 2017. These insulators find applications across distribution and sub-transmission lines, in form of single-piece or multi-piece, depending on the voltage of application. High anti-fog performance, ease of manufacturing, and operational flexibility are also some of the underlying parameters that support the product penetration of pin electric insulator. Electric Insulator are be also segmented based on applications, where the transformers segment held the highest market share primarily driven by rising concerns over power thefts & protection along with increased focus on real-time monitoring of power networks. Asia-Pacific among other regions held the largest Electric Insulator Market share in 2017 and is also expected to have a high growth rate in the forecast period with China being a major contributor to the overall market. Favorable government reforms toward energy efficiency along with strengthening focus on up-gradation and expansion of the existing R&D infrastructure will propel the market growth. For instance, in 2016 the State Grid Corporation of China (SGCC) announced plans to expand investment in the country’s electrical transmission infrastructure by 28% over the period of next five years. Key player across the electric insulator industry are General Electric, ABB, Siemens, Hubbell Lapp Insulators, and NGK Insulators. Major industry participants are focusing on design innovations and expansion of the product line as part of a strategy to meet the regulatory standards and enhance the market presence. Furthermore, electric insulator manufacturers are undertaking M&A activities to expand their global footprint. The objective of the report is to present comprehensive analysis Electric Insulator Market including all the stakeholders of the industry. The past and current status of the industry with forecasted market size and trends are presented in the report with analysis of complicated data in simple language. The report covers all the aspects of industry with dedicated study of key players that includes market leaders, followers and new entrants by region. PORTER, SVOR, PESTEL analysis with the potential impact of micro-economic factors by region on the market have been presented in the report. External as well as internal factors that are supposed to affect the business positively or negatively have been analyzed, which will give clear futuristic view of the industry to the decision makers. The report also helps in understanding Electric Insulator Market dynamics, structure by analyzing the market segments, and project the Electric Insulator Market size. Clear representation of competitive analysis of key player by type, price, financial position, product portfolio, growth strategies, and regional presence in the Electric Insulator Market make the report investor’s guide.For More Information Visit @:https://www.maximizemarketresearch.com/market-report/electric-insulator-market/11647/Market Scope Electric Insulator Market: Electric Insulator Market, By Material • Ceramic/Porcelain• Glass• CompositeElectric Insulator Market, By Voltage • High• Medium• LowElectric Insulator Market ,By Application • Cables and transmission lines• Switchgears• Transformers• Busbars• OthersElectric Insulator Market, By Product • Pin• Suspension• Shackle• OthersElectric Insulator Market, By End-Use • Residential• Commercial & Industrial• UtilitiesElectric Insulator Market ,By Rating • <11 kV• 11 kV• 22 kV• 33 kV• 72.5 kV• 145 kV• 220 kV• 400 kV• 800 kV• 1200 kVElectric Insulator Market, By Installation • Distribution• Transmission• Substation• Railways• OthersElectric Insulator Market, By Geography • North America• Europe• Asia-Pacific• Middle East & Africa• Latin AmericaKey Players operating in the Electric Insulator Market: • General Electric• ABB• Siemens• Hubbell Lapp Insulators• NGK Insulators• Aditya Birla.• Maclean Fogg• Elsewedy Electric• Seves Group• BHEL• TE Connectivity This Report Is Submitted By : Maximize Market Research CompanyCustomization of the report:Maximize Market Research provides free personalized of reports as per your demand. This report can be personalized to meet your requirements. Get in touch with us and our sales team will guarantee provide you to get a report that suits your necessities.About Maximize Market Research:Maximize Market Research provides B2B and B2C research on 20,000 high growth emerging opportunities & technologies as well as threats to the companies across the Healthcare, Pharmaceuticals, Electronics & Communications, Internet of Things, Food and Beverages, Aerospace and Defense and other manufacturing sectors.Contact info:Name: Lumawant GodageOrganization Address: MAXIMIZE MARKET RESEARCH PVT. LTD.Email: [email protected]: Pune, Maharashtra 411051, India.Contact: +919607195908

#Electric Insulator Market

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mjagtap · 4 years

Text

Electric Insulator Market – Industry Analysis and Forecast (2019-2026)

Electric Insulator Marketis estimated to reach US$ XX Bn by 2026 in terms of revenue at CAGR of XX % in the forecasting Period. Growing investments toward the refurbishment of aging grid infrastructure across developed economies along with the acceptance of smart grid technology will drive the global electric insulators market. Sizable expenditure toward modernization of electrical infrastructure along with rapid urbanization will further drive the overall Electric Insulator Market. According to the recent report of World Energy Outlook, an investment of more than USD 3.4 trillion has been made to contribute to the refurbishment and replacement of existing assets showing the huge demand and opportunities for market growth. The report study has analyzed revenue impact of covid-19 pandemic on the sales revenue of market leaders, market followers and disrupters in the report and same is reflected in our analysis. Aging equipment, increased demand, capacity bottlenecks, along with rising emphasis toward the capacity addition of power generation will enhance the industry growth of electric insulators. Electric Insulator Market is segmented by the material, voltage, application, product, end use, rating, installation and region. Based on material segment porcelain electric insulators has dominated the global electric insulator market in 2017. Ability to offer optimum mechanical strength and withstanding considerable stress resistance are the key factors supporting the product’s dominance across the industry landscape among other segments. Moreover, the growing prominence of polymeric counterparts is expected to offer a competitive edge to these insulators. Under the product segment, pin electric insulator held highest market share in 2017. These insulators find applications across distribution and sub-transmission lines, in form of single-piece or multi-piece, depending on the voltage of application. High anti-fog performance, ease of manufacturing, and operational flexibility are also some of the underlying parameters that support the product penetration of pin electric insulator. Electric Insulator are be also segmented based on applications, where the transformers segment held the highest market share primarily driven by rising concerns over power thefts & protection along with increased focus on real-time monitoring of power networks. Asia-Pacific among other regions held the largest Electric Insulator Market share in 2017 and is also expected to have a high growth rate in the forecast period with China being a major contributor to the overall market. Favorable government reforms toward energy efficiency along with strengthening focus on up-gradation and expansion of the existing R&D infrastructure will propel the market growth. For instance, in 2016 the State Grid Corporation of China (SGCC) announced plans to expand investment in the country’s electrical transmission infrastructure by 28% over the period of next five years. Key player across the electric insulator industry are General Electric, ABB, Siemens, Hubbell Lapp Insulators, and NGK Insulators. Major industry participants are focusing on design innovations and expansion of the product line as part of a strategy to meet the regulatory standards and enhance the market presence. Furthermore, electric insulator manufacturers are undertaking M&A activities to expand their global footprint. The objective of the report is to present comprehensive analysis Electric Insulator Market including all the stakeholders of the industry. The past and current status of the industry with forecasted market size and trends are presented in the report with analysis of complicated data in simple language. The report covers all the aspects of industry with dedicated study of key players that includes market leaders, followers and new entrants by region. PORTER, SVOR, PESTEL analysis with the potential impact of micro-economic factors by region on the market have been presented in the report. External as well as internal factors that are supposed to affect the business positively or negatively have been analyzed, which will give clear futuristic view of the industry to the decision makers. The report also helps in understanding Electric Insulator Market dynamics, structure by analyzing the market segments, and project the Electric Insulator Market size. Clear representation of competitive analysis of key player by type, price, financial position, product portfolio, growth strategies, and regional presence in the Electric Insulator Market make the report investor’s guide.For More Information Visit @: https://www.maximizemarketresearch.com/market-report/electric-insulator-market/11647/ Market Scope Electric Insulator Market: Electric Insulator Market, By Material • Ceramic/Porcelain• Glass• CompositeElectric Insulator Market, By Voltage • High• Medium• LowElectric Insulator Market ,By Application • Cables and transmission lines• Switchgears• Transformers• Busbars• OthersElectric Insulator Market, By Product • Pin• Suspension• Shackle• OthersElectric Insulator Market, By End-Use • Residential• Commercial & Industrial• UtilitiesElectric Insulator Market ,By Rating • <11 kV• 11 kV• 22 kV• 33 kV• 72.5 kV• 145 kV• 220 kV• 400 kV• 800 kV• 1200 kVElectric Insulator Market, By Installation • Distribution• Transmission• Substation• Railways• OthersElectric Insulator Market, By Geography • North America• Europe• Asia-Pacific• Middle East & Africa• Latin AmericaKey Players operating in the Electric Insulator Market: • General Electric• ABB• Siemens• Hubbell Lapp Insulators• NGK Insulators• Aditya Birla.• Maclean Fogg• Elsewedy Electric• Seves Group• BHEL• TE Connectivity This Report Is Submitted By : Maximize Market Research CompanyCustomization of the report:Maximize Market Research provides free personalized of reports as per your demand. This report can be personalized to meet your requirements. Get in touch with us and our sales team will guarantee provide you to get a report that suits your necessities.About Maximize Market Research:Maximize Market Research provides B2B and B2C research on 20,000 high growth emerging opportunities & technologies as well as threats to the companies across the Healthcare, Pharmaceuticals, Electronics & Communications, Internet of Things, Food and Beverages, Aerospace and Defense and other manufacturing sectors.Contact info:Name: Lumawant GodageOrganization Address: MAXIMIZE MARKET RESEARCH PVT. LTD.Email: [email protected]: Pune, Maharashtra 411051, India.Contact: +919607195908

#Electric Insulator Market

0 notes

mjagtap · 4 years

Text

Electric Insulator Market – Industry Analysis and Forecast (2019-2026)

Electric Insulator Market is estimated to reach US$ XX Bn by 2026 in terms of revenue at CAGR of XX % in the forecasting Period.

Growing investments toward the refurbishment of aging grid infrastructure across developed economies along with the acceptance of smart grid technology will drive the global electric insulators market. Sizable expenditure toward modernization of electrical infrastructure along with rapid urbanization will further drive the overall Electric Insulator Market. According to the recent report of World Energy Outlook, an investment of more than USD 3.4 trillion has been made to contribute to the refurbishment and replacement of existing assets showing the huge demand and opportunities for market growth.

Aging equipment, increased demand, capacity bottlenecks, along with rising emphasis toward the capacity addition of power generation will enhance the industry growth of electric insulators.

Electric Insulator Market is segmented by the material, voltage, application, product, end use, rating, installation and region. Based on material segment porcelain electric insulators has dominated the global electric insulator market in 2017. Ability to offer optimum mechanical strength and withstanding considerable stress resistance are the key factors supporting the product’s dominance across the industry landscape among other segments. Moreover, the growing prominence of polymeric counterparts is expected to offer a competitive edge to these insulators.

The objective of the report is to present comprehensive analysis Electric Insulator Market including all the stakeholders of the industry. The past and current status of the industry with forecasted market size and trends are presented in the report with analysis of complicated data in simple language. The report covers all the aspects of industry with dedicated study of key players that includes market leaders, followers and new entrants by region. PORTER, SVOR, PESTEL analysis with the potential impact of micro-economic factors by region on the market have been presented in the report. External as well as internal factors that are supposed to affect the business positively or negatively have been analyzed, which will give clear futuristic view of the industry to the decision makers.

The report also helps in understanding Electric Insulator Market dynamics, structure by analyzing the market segments, and project the Electric Insulator Market size. Clear representation of competitive analysis of key player by type, price, financial position, product portfolio, growth strategies, and regional presence in the Electric Insulator Market make the report investor’s guide.

For More Information Visit @:

https://www.maximizemarketresearch.com/market-report/electric-insulator-market/11647/

Market Scope Electric Insulator Market:

Electric Insulator Market, By Material

• Ceramic/Porcelain

• Glass

• Composite

Electric Insulator Market, By Voltage

• High

• Medium

• Low

Electric Insulator Market ,By Application

• Cables and transmission lines

• Switchgears

• Transformers

• Busbars

• Others

Electric Insulator Market, By Product

• Pin

• Suspension

• Shackle

• Others

Electric Insulator Market, By End-Use

• Residential

• Commercial & Industrial

• Utilities

Electric Insulator Market ,By Rating

• <11 kV

• 11 kV

• 22 kV

• 33 kV

• 72.5 kV

• 145 kV

• 220 kV

• 400 kV

• 800 kV

• 1200 kV

Electric Insulator Market, By Installation

• Distribution

• Transmission

• Substation

• Railways

• Others

Electric Insulator Market, By Geography

• North America

• Europe

• Asia-Pacific

• Middle East & Africa

• Latin America

Key Players operating in the Electric Insulator Market:

• General Electric

• ABB

• Siemens

• Hubbell Lapp Insulators

• NGK Insulators

• Aditya Birla.

• Maclean Fogg

• Elsewedy Electric

• Seves Group

• BHEL

• TE Connectivity

This Report Is Submitted By : Maximize Market Research Company

Customization of the report:

About Maximize Market Research:

Contact info:

Name: Lumawant Godage

Organization Address: MAXIMIZE MARKET RESEARCH PVT. LTD.

Email: [email protected]

Address: Pune, Maharashtra 411051, India.

Contact: +919607195908

#Electric Insulator Market

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