220 kv sf6 circuit breaker pdf files

Sf 6 sulphur hexafluoride gas has excellent dielectric, arc quenching, chemical and other physical properties which have proved its superiority over other arc quenching mediums such as oil or air. It should be designed for indoor application with meteorological conditions at site winter 3c to 14 c and summer 31 c to 46 c, seismic zone. Sulphur hexafluoride sf6 circuit breaker a circuit breaker in which sf 6 under pressure gas is used to extinguish the arc is called sf 6 circuit breaker. Tests carried out according to the standard for breaking at 400 a with making. Pdf electrical strength analysis of sf6 gas circuit breaker element.

Sf6 circuit breakers have been developed for voltages 115 kv to 230 kv, power ratings 10 mva to 20 mva and. Sf6 circuit breakers use the sf6 autocompression technique. The drawingsdocuments distribution schedule shall be as indicated below. Replacement and overhauling of 145 kv sf6 circuit breaker.

The main contacts and the arcing contacts are initially closed fig. Sulfur hexafluoride is generally used in present highvoltage circuit breakers at rated voltage higher than 52 kv. What roughly reading alstom circuit breaker manual of gl 314. Gl315d 300 kv 362 kv 420 kv gl316d 2xgl317d gl318d gl317d 550 kv gl314 245 kv 800kv hv circuit breakers type ais hv sf 6 circuit breakers example of circuit breaker range. The objective of the present study was to determine potential causes of insulator 2. Comparing to other circuit breaker types, the sf6 circuit breakers have been found to be very effective for high power and high voltage service.

Retrofit reference list english doc reference list. Circuit breaker with several chambers in series per pole. High performance breaker with highest short circuit breaking current a complete range of dead tank breakers at 245 kv provide options for applications with higher than standard asymmetry requirements xr ratio and offers the highest short circuit capacity in. An arc quenching for a default current of 50 ka, 245 kv, sf6 line breaker has been simulated. Page 10 of 15 b as long as power is available to the motor, a continuous sequence of. In an sf6 circuit breaker, sulphur hexafluoride gas is used as the arc quenching medium the sulphur hexafluoride gas sf6 is an electronegative gas and has a strong tendency to absorb free electrons.

Abb offers a comprehensive range of highvoltage products up to 1200 kilovolts ac and 1100 kilovolts dc that. Lf range circuit breakers are particularly well suited to switching and protection. Bookmark file pdf alstom circuit breaker manual of gl 314. Hv sf6 gas deadtank circuit breakers ite 145 ga,gb ite 230 ga model a, gb model b ite 242 gb ite 345 ga,gb. During operation of sf6 circuit breaker, this highly compressed gas is released through the arc in the breaker and collected to a relatively lowpressure. This type of breaker is mostly used for ehv systems like 220 kv, 400 kv and 765 kv.

It is now possible to use lowenergy springloaded mechanisms to drive highvoltage circuit breakers up to 800 kv. Into the 1980s, the pressure necessary to blast the arc was generated mostly by gas heating using arc energy. The preventive maintenance kit boxes are designed to make life easier for the customers with sf6 live tank circuit breakers. The working of sf6 cb of first generation was quite simple and it is some extent similar to air blast circuit breaker. C10 the insulating medium of circuit breakers shall be sf6 gas, livetank, trip free, singlebreak type and shall not take more than 3 cycles 60 msecs. Sulpher hexafluoride or sf 6 circuit breaker is most popular and widely used breaker. Sf6 disconnecting circuit breaker hpl 245b1 with operating. Our circuit breakers bring peace of mind to switchgear panel builders and users in any mv application, whatever your business. Hd4 medium voltage circuit breakers use sulphur hexafluoride gas sf6 to extinguish the electric arc and as the insulating medium. Fill up or topup 2kv with sf6 gas cr4 discussion thread. Type pmi90, 245 kv, up to 90 ka dead tank circuit breaker. High voltage circuit breakers, sf6 is generally used for. Siemens highvoltage circuit breakers, regardless of type or voltage range, are designed in a well proven modular platform concept. Thus, it is produced to be used in all gis types, including updating of old series gis to change dated types of circuit breakers.

Sf6 cbs are used in substations for all voltages ranging from 144 to 765 kv or even above. Circuit breaker cb has been around for almost as long as industrial electrical power usage. This technique is the result of many years experience in sf6 technology and major research work. By means of the special spring catches, hook the ropes to the circuitbreaker hook to the special anchoring points provided in the structure and lift. Page 1 of 18 specifications for 220kv out door circuit breakers.

They can be gang operated up to 245 kv, and independent pole operation ipo is available at all voltage levels. Report on industrial summer training on 220 kv substation slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Sf6 circuit breakers construction, types and working. Sf6 circuit breaker construction, working principle and. If you continue browsing the site, you agree to the use of cookies on this website. Type pmi90, 245 kv, up to 90 ka power circuit breaker 3. Sf6 disconnecting circuit breaker hpl 420b2 with operating mechanism type blg 1002a pdf id. The use of sf6 circuit breaker is mainly in the substations which are having high input kv input, say above 220kv and more. When if the gas gets decreases there is a motor connected to the circuit breaker. Ceggp257 4 general technical requirements for 245 kv sf6 circuit breaker make.

This leads to a wide variety of circuit breaker types and strong flexibility with regard to various applications according to our customers requirements. The orders for supply of 245 kv sf6 circuit breaker shall be issued separately i. Page 10 of 15 b as long as power is available to the motor, a continuous sequence of the closing and opening operations shall be possible. Abb has a long history of supporting utilities needs for expanded dead tank breaker performance in response to the growing demands of a continuously evolving power grid. Sf 6 breaker 800 kv sf 6 gas circuit breakers gcb for outdoor use from 24 kv to 800 kv cgl is the only manufacturer in india for supply of 420kv sf6 circuit breakers to meet the high altitude requirement of 1600m. Circuit breakers transmission products siemens siemens. Controlled switching of high voltage sf circuit breakers for fault. The kit boxes not only minimize the risk for unwanted breakdowns, but also prolong the breaker service life and ensure peak performance. A number of units are connected in series according to the system voltage. It combines the effect of thermal expansion with a rotating arc to create arc.

Product scope medium voltage circuit breakers with mechanical actuator spring mechanism for primary distribution up to 46 kv, 4, a, 63 ka. Ges dead tank circuit breakers are available for single or three pole operation, qualified to ieee and iec standards and available from 38 kv up to 550 kv. Are cheap power tool batteries better than dewalt 20v oem lithiums. Here sf6 gas was compressed and stored in a highpressure reservoir.

Indoor vacuum and sf6 circuit breakers schneider electric. Abb library is a web tool for searching for documents related to abb products and services. The sf6 gas circuit breaker gcb products range is as follow. Applications a typical sf6 circuit breaker consists of interrupter units each capable of dealing with currents upto 60 ka and voltages in the range of 5080 kv. Explore our dedicated panel builder offers to find your most appropriate solution in the mediumvoltage market. Flexible generator circuit breaker solutions for new and refurbished power plants up to 50,000 a and 1,500 mw. Maintenance of power circuit breakers internet version of this manual created december 1999. In 220 kv g s s, sf6 gas circuit breaker are used, as for greater capacity g s s, sf6 type breakers are very efficient. Ite km 121 242 kv abb high voltage service, 100 distribution circle, mt. Nominal voltage is 220 kv, sf6 inflation pressure absolute is 0,7 mpa. These characteristics ensure long electrical life of the circuit breaker. Breaking in sf6 gas takes place without any arc chopping and without generation of overvoltages. The circuitbreaker poles contain sf6 at a pressure of 380 kpa for 36kv application and 550kpa for 40.

A study of a 145 kv 63 ka 4000a circuit breaker ais 1, and a 145 kv 31. Ges circuit breakers meet or exceed the latest ieeeansi and iec standards, including c2 and m2. In sulpher hexafluoride or sf6 circuit breaker, sulpher hexafluoride sf 6 gas is used as an insulating and arc quenching medium. Modern sf6 type circuit breakers use compressed gas to. The gas is put inside the circuit breaker by force ie under high pressure. Report on industrial summer training on 220 kv substation. Switching performance c2 lcccbc pressure design lockoutwarningfilling. Highvoltage circuit breakers digital asset management siemens. Sf6 circuit breaker types and operation of sf6 circuit. Our indoor vacuum circuit breakers and sf6 circuit breakers are essential for safe and reliable power. Section 5 design features of sf6 gas insulated switchgear 911 section 6 circuit breakers 12 section7 associated equipment of gas insulated switchgear 14 section 8 parts, fittings and accessories 15 16. Ge offers a comprehensive range of dead tank circuit breakers for ratings up to 550 kv and 63 ka. The contacts of the breaker are opened in a highpressure flow sulphur hexafluoride sf6 gas and an arc is struck between them.