There is a groove on the upper end of the insulator for housing the. Post insulator a type of insulator in the 1930s that is more compact than traditional pin type insulators and which has rapidly replaced many pin type insulators on lines up to 69 kv and in some configurations, can be made for operation at up to 115 kv. Therefore, this type of insulator is not economical beyond 33 kv. An electrical insulator is a material whose internal electric charges do not flow freely. We offer high quality pin type insulators according to iec, ansi, bs standards and customers specifications.
It is thought to be the earliest developed overhead insulator and is still popularly used in. The pin type insulator has grooves on the upper end for keeping the conductor. Pin insulator is mainly used on distribution lines from 6kv36kv. A neutral spool insulator is available and meets the ansi c29. Pdf analysis of surface flashover of 33kv pin type insulators due. We have made some insulator catalogue files, by these insulator catalogue you can know more about us orient power. Hdpe insulators are 100% recyclable and our hdpe insulators can replace porcelain pin insulators, already pass the design tests in the international lab. Typical application areas for different types of insulators. For high voltages 33 kv, it is a usual practice to use suspension type insulators consist of a number of porcelain discs connected in series. Line post distribution pin type insulator is made by ceramic material and brown or grey glazed. Since that time, similar failures have occurred on 12. For insulators used in an approximately horizontal position, the value given in col.
The cost of pin type insulator increases rapidly as the working voltage is increased. Pdf contaminationdriven insulator failure is a problem that incessantly plagues distribution systems. Pin insulators are one of three types of overhead insulators, the others being strain insulators and suspension insulators. Aug 31, 2017 the pin insulator is used in power distribution for the voltage up to 33kv. There are a number of great reference books that are available to the insulator collector. Iec standard pin type insulator brown with radio free glaze on top description. Revised and renewed tavrida listing to upgraded max. Chapter 8 lists the iec documents relating to the different insulator types. Din 48016 screwed cap for mounting pin type insulators for overhead power lines up to v. In general, there are three types of suspension insulator. Aug 24, 2011 as the name suggests, the pin type insulator is secured to the crossarm on the pole. The insulators shall comply with the following tests as per is. This indepth knowledge and understanding of transmission and distribution systems, positions kli as a unique resource to clients. A pin insulator is a device that isolates a wire from a physical support such as a pin a wooden or metal dowel of about 3 cm diameter with screw threads on a telegraph or utility pole.
Artificial rain test of outdoor long rod insulators pdf download available. Porcelain pin type insulator is made by ceramic material and brown or grey glazed. General concept for 800 kv dc ohl in china are composite insulators composite insulators considered for 765 kv ac ohl in south africa station insulators. Failures of pedestaltype pin and cap insulators the problem of failure of pedestaltype insulators first appeared on a 34. This contrasts with other materials, semiconductors and conductors, which conduct electric current more easily. Porcelain insulator,porcelain suspension insulator,pin type. Mar 09, 20 suspension type insulators are cheaper than pin type insulators for voltages beyond 33 kv. Download insulators catalogue pdf overhead line fittings uk ltd. Kli personnel are available to work hand in hand with clients to design cust.
In case of failure replacement work is easy as string is suspended free to swing in any direction. Some pdf files are protected by digital rights management drm. Composite pin insulators have tie top and clamp top types, which is made by polymer type silicone rubber. We manufacture lots of 11kv pin insulator and 33kv pin insulator. Cables typically consist of multiple conductors, colorcoded for identification. Technical specification for overhead line porcelain and glass insulators i specification ets100101 ver 5 ergon energy corporation limited abn 50 087 646 062. Constant spacing between two conductors through the entire length of the cable provides a transmission line. E shlv1 shlv2 shlv8 lvlp 54 76 32 91 57 80 57 82 39 54 40 52 17 17 1717 12 7 11patt bb1003. Kline insulators limited kli engineers and sales specialists are industry experienced. Line post distribution hubbell power systems is a proud member of the hubbell family. Porcelain insulator,porcelain suspension insulator,pin. A pin insulator is a device that isolates a wire from a physical support such as a pin on a. Hendrix tietop insulators are molded of proprietary, gray, track resistant, high density polyethylene. Reference books and other information not directly related to pintype insulators can be found in the insulator gowiths listings.
Level of automation achieved and lists of areas where manual processing exists. There are 5 types of insulators used as electrical overhead insulation. Technical specification for overhead line porcelain and. Advantages of suspension insulators and pin type insulators. Suspension insulators are cheaper in cost compared to pin type insulators for operating voltage above 50kv each unit of suspension insulators insulator disc is designed for comparatively low voltage 11kv and can be increase the insulation strength by connecting these insulator disc modules in series. Media in category pin insulators the following 72 files are in this category, out of 72 total.
Each unit or disc of suspension type insulator is designed for low voltage, usually 11 kv. Covers materials, dimensions and characteristics, marking, sampling, inspecting and testing of wetprocess porcelain. How many type of insulator use in electrical transmission. Victor insulators pin type insulators low voltage pin types are manufactured and tested to the requirements of ansi standard c29. It is a formed, single layer shape that is made out of a nonconducting material, usually porcelain or glass. Apr 24, 2016 suspension insulators are cheaper in cost compared to pin type insulators for operating voltage above 50kv each unit of suspension insulators insulator disc is designed for comparatively low voltage 11kv and can be increase the insulation strength by connecting these insulator disc modules in series. The pin insulator is used in power distribution for the voltage up to 33kv. Highly resistant to lightning puncture, ppc insulators manufactures a wide range of low and high voltage pin type insulators designed for distribution and sub transmission circuits. How many type of insulator use in electrical transmission and. Pdf a detailed investigation of overhead line insulators. Ansi 565 pin type insulator 69kv glazed porcelain 8 pin hole 1212 height grey icb the details about ansi standard pin insulators specifications and other sides have been introduced in orient insulator pdf files.
Polyethylene pin type insulators tietop overhead products description. The conductor passes through this groove and is bound by the annealed wire of the same material as the conductor. The central top portion of the insulator consists of two curved tunnels. Insulators for overhead lines with a nominal voltage above v ceramic or glass insulator units for a. Tie top heads with a c, f and j neck designs are available. Lt pin insulators type of insulators type i standards to which insulators will conform is. It is one of the earliest designs, and consists of one porcelain disc. Types of insulators in transmission lines electrical4u. The pin insulator has grooves on the upper end for keeping the. Both low voltage and high voltage designs are available and in compliance to applicable ansi class 55 and 56 standards. Technical specification for overhead line porcelain and glass insulators ets100101.
They are ideal for use with covered conductors because the low dielectric constant matches that of hendrix and other polyethylene conductor insulating compounds. Aug 24, 2011 there are several types of insulators but the most commonly used are pin type, suspension type, strain insulator and shackle insulator. Porcelain pin type insulator mainly includes ansi 553, ansi 554 and ansi 555, and distribution ceramic pin insulator will be used on 11kv or 33kv transmission lines. The property that distinguishes an insulator is its resistivity. Insulator in overhead line and types of insulators. The versatile neck designs in c, f, k and j, side and top grooves, allow the acceptance of largediameter conductors to permit easy tying. There are 5 types of insulators used in transmission lines as overhead insulation.
Applies to string insulator units of the cap and pin type with insulating parts of ceramic material or glass, intended for a. Types of wire conductors two or more conductors in a common covering form a cable. Each unit consists of a stack of 3 pin type insulators fixed one on the top of the other. There is a groove on the upper end of the insulator for housing the conductor. The insulators are designed to meet the appropriate dimensional, electrical and mechanical requirements of the applicable ansi c29. The construction of the pin type insulator is simple and requires less maintenance. Voltage class of pin type insulator can be made up to 36 kv,10 kn. Insulators pin type, utility platt electric supply. If you want to know more about ansi standard pin insulators please contact orient power. Telephone utilities may use various types of insulators other than the above. Power lines supported by ceramic pin type insulators in california, united states a pin insulator is a device that isolates a wire from a physical support such as a pin a wooden or metal dowel of about 3 cm diameter with screw threads on a telegraph or utility pole. There are several types of insulators but the most commonly used are pin type, suspension type, strain insulator and shackle insulator.
Pin type insulator can be one part, two parts or three parts type, depending upon application voltage. It is placed on the cross arm of the supporting tower. Pin type insulators on sales quality pin type insulators. Pin type insulators as the name suggests, the pin type insulator is secured to the cross arm on the pole. The voltage across the lowest insulator is 1 kv and that across the next unit is 11 kv. Especially ansi standard pin insulator are in very good finish and high cantilever strength. As 3608 insulators porcelain and glass, pin and shackle type voltages. Depending upon the working voltage, the desired number of discs can be connected in series. Insulators are generally classified in following types. Withstand voltage kv 10 kv puncture withstand voltage 1. Buyer must notify the company promptly of any claim under this warranty. Widely applied for 11001200 kv ac the only alternative for 8001200 kv dc. You can have a general knowledge for us, such insulator workshops, insulator test equipments, our insulator production capacity etc. Pin insulators are the earliest developed overhead insulator, but are still commonly used in power networks up to 33 kv system.
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