Feb 03, 2015 there are mainly two types of circuit breakers used for any substations. Hyosung then seeks to exceed all established testing criteria by carrying out additional tests that we consideressential in producing a higher quality product. What is the procedure of testing a sf6 circuit breaker. The working of sf6 cb of first generation was quite simple and it is some extent similar to air blast circuit breaker. Furnish sf6 insulated switchgear as detailed in sections 3. During operation of sf6 circuit breaker, this highly. Your computer may not have enough memory to open the image, or the image may have been corrupted. Siemens patented this method of arc quenching in 1973 and has continued to develop the technology of the selfcompression interrupter unit ever since. In most tests, it is 0 ppm, and up to 100 ppm is not such problem, over 500 ppm is a problem that definitely needs attention, and it indicates acidic compounds are present in the breaker white powder which can erode most components and certainly be dangerous to humans hands, eyes and lungs exposed while working on an. 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. Flexible generator circuit breaker solutions for new and refurbished power plants up to 50,000 a and 1,500 mw.
Electric field distribution in 2 kv xlpe cable termination model from finite element method. The siemens range of gasinsulated switchgear gis, for rated voltages from 72. Technical specification of 2 kv sf6 circuit breaker special instructions to bidder please read following instructions carefully before submitting your bid. Vfto of a 2 kv gas insulated substation have been calculation by using emtp 2. Product brochure outdoor live tank sf 6 circuit breaker 5 typenumber total total total of cases volume gross weight net weight edf sk 36 84 kv three pole operation, 2 3. The current transformers cts are to replace the existing out door 2 kv, oil filled type cts of the same capacity at name of power station of ceylon electricity board in sri lanka. In those design where bus bar is continuous, provision is to be made available for isolation of individual bay without disturbing adjacent bay. They are a sf6 circuit breakers, b vacuum circuit breakers. In the case of the sf6 circuitbreaker, interrupters which have reached the limiting number of operations can be overhauled and restored to as new condition. 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. Electric field distribution in 2 kv xlpe cable termination model from finite element method conference paper pdf available september 2012 with 459 reads how we measure reads.
Instead of oil, air, or a vacuum, a sulfur hexafluoride circuit breaker uses sulfur hexafluoride sf 6 gas to cool and quench the arc on opening a circuit. Here sf6 gas was compressed and stored in a highpressure reservoir. Maintenance of 2 kv sf6 circuit breaker cont maintenance of 2 kv sf6 circuit breaker cont maintenance of 2 kv surge arresters daily visual inspection check reading of surge arrester counter. Planning 115kv multi bay sf6 free hv gis for bid in 2018. Our complete 3ap family up to 800 kv and above relies on our arcquenching principles, either the selfcompression or the dynamic selfcompression principle using the thermal energy of the arc. Nov 20, 2017 various routine tests are performed for ensuring the quality, performance of a circuit breaker and these are 1. 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. 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. Any drawings or data sheets attached to the inquiry shall be considered part of this specification. Sf6 circuit breaker types and operation of sf6 circuit breaker. This technique is the result of many years experience in sf6 technology and major research work.
Nominal system voltage between phases kv 2 earthing of neutral at transformers solid system earthing effectively earthed. It combines the effect of thermal expansion with a rotating arc to create arc. System information a1 system conditions the networks are mainly of outdoor type. Gasinsulated switchgear transmission products siemens. Sf 6 gas circuit breakers gcb business edge business edge the switchgear works of crompton greaves is located on a 1,32,540 sq. All 2 kv lines are inherently compliant with the public exposure limits see more details. For 220 kv class enclosure it shall be single or phase wise separate metallic type. This paper is focused on simulation options of the transient connection gis overhead line in simulation software. Circuit breakers transmission products siemens siemens. Ac highvoltage circuit breakers everything you wanted to know about ac highvoltage circuit breakers but were afraid to ask. Technical specification for sf6 gas insulated metal enclosed. Abb disconnectors are designed as per iec 62271102 and iec 622711 standards.
Calculation of transient overvoltages by using emtp. 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. Provide production tests and inspections as detailed in section 11. This paper is focused on simulation options of the transient connection gisoverhead line in. Pdf electric field distribution in 2 kv xlpe cable. Page 1 of 18 specifications for 2kv out door circuit breakers. Restart your computer, and then open the file again. The most important characteristics of the sf6 gas and vacuumcircuit breakers, i. Sulfur hexafluoride circuit breakers protect electrical power stations and distribution systems by interrupting electric currents, when tripped by a protective relay. He joined the same year merlin gerin group, in hv transmission.
Case study of rectification of 2 kv sf circuit breaker. Sf6 properties, and use in mv and hv switchgear ect 188 updated february 2003 d. Accredited testing laboratories carry out type tests on the disconnectors in accordance with the latest regulations. Four interrupter sf6 cb applied for up to 800 kv 715 kv system. The circuitbreaker poles contain sf6 at a pressure of 380 kpa for 36kv application and 550kpa for 40. Sf6 properties za gis is the implementation, within a complete hv substation, of the remarkable sulphur hexafluoride sf6 properties in terms of voltage withstand and current interruption zsf6 main data zneutral gas. However, it is difficult to find a model presentation in certain software. All tests are based on international standards and our customers requirements. Gis substation design and execution hv and ehv gis. Also other standards and regulations eg, ieee, gost, and gb can be met on request. Calculation of transient overvoltages by using emtp software. Jan 02, 2019 four interrupter sf6 cb applied for up to 800 kv 715 kv system. Abb offers a comprehensive range of highvoltage products up to 1200 kilovolts ac and 1100 kilovolts dc that help enhance the safety, reliability and efficiency.