Series 3530590 3 air hexafluoride circuit breakers protect electrical power stations and distribution systems by interrupting electric currents, when tripped by a protective relay. Sulfur hexafluoride fds p 208 7142010 united kingdom report version 1. Looking for affordable sulfur hexafluoride price for circuit breaker. Gasco sulfur hexafluoride calibration gas 100 ppm balance air in a 600 liter aluminum disposable cylinder cga 590 connection. Hv circuit breaker type generator circuit breaker fkga8 generator circuit breaker i sc 210 ka u r 33 kv sf 6 circuit breaker designed for power plants from 700 to 1,500 mw it is equipped with a springoperated mechanism per pole. A circuit breaker is a device that interrupts the abnormal or fault currents and in addition performs the function of a switch. Its combined chemical, thermal and electrical properties allow many advantages to be achieved. Sf6 is an inert gas, but decomposed components as a result of electrical arcing or naked flames are toxic and hazardous.
Sulfur hexafluoride sf6 is a gas whose molecules consist of one sulfur atom and six fluorine atoms. I have just added archive links to 2 external links on sulfur hexafluoride circuit breaker. A circuit breaker in which sulphur hexafluoride gas or sf 6 gas is used as the arc quinching medium, known as an sf6 circuit breaker. Reach out to suppliers directly and ask for the lowest price, discount, and small shipping fees. Online monitoring technology for moisture content of sulfur.
Sulfur hexafluoride price for circuit breaker, wholesale. Handling of sulfur hexafluoride gas central facilities. Return all empty cylinders and appropriate logs to the central facility. Due to high electronegativity, it has a high affinity for absorbing free electrons. Sulfur hexafluoride is used in a range of industries for a range of applications including. In the year of 1937, general electrical company first realized that sf 6 gas could be used as gaseous insulating material. Sulfur hexafluoride gas detector industrial applications. Sulfur hexafluoride an overview sciencedirect topics. A hybrid circuit breaker which can be used in an electrical highvoltage network. Sf6 gas or sulfur hexafluoride gas properties electrical4u. Gasco sulfur hexafluoride calibration gas 100 ppm balance nitrogen in a 103 liter steel disposable cylinder.
Instead of oil, air, or a vacuum, a sulfur hexafluoride circuit breaker uses sulfur hexafluoride gas to cool and quench the arc on opening a c. Medium voltage outdoor circuitbreaker type ohb uses sulphur hexafluoride gas as insulating and arc quenching medium. Pole assembly the circuit breaker is made up of three separate poles. The decomposition products, gas and fine powder may be toxic, strong irritants and attack the respiratory system. At room temperature and pressure sf 6 is a gas, but it forms a dense. This can lead to premature failure of the breaker, possibly with catastrophic results. Alternatively, you can add nobotsdenyinternetarchivebot to keep me off the page altogether. Sulfur hexafluoride circuit breakers protect electrical power stations and distribution systems by interrupting electric currents, when tripped by a protective relay. Identifying, quantifying and controlling emissions of sulfur. An advantage of sf 6 is that it allows the transmission of higher power levels in a smaller footprint compared with other insulating mediums.
Oct 17, 2018 sulfur hexafluoride sf6 is a gas whose molecules consist of one sulfur atom and six fluorine atoms. Sulfur hexafluoride is a colorless, odorless, nontoxic, inorganic, nonflammable gas. If necessary, add after the link to keep me from modifying it. This hybrid circuit breaker has two seriesconnected arcing chambers, a first of which is filled with sulfahexafluoride gas as a quenching and insulating medium, and a second of which is in the form of a vacuum interrupter chamber. The designated central facility is responsible for maintaining a log. Semiconductor processing dielectric power equipment magnesium casting aluminum casting tracer gas laboratories. Gasco sulfur hexafluoride calibration gas ppm balance air in a 600 liter aluminum disposable cylinder cga 590. Sulfur hexafluoride gas detector sf6 detector milram. Jan 02, 2019 sf6 or sulfur hexafluoride gas molecules are combined by one sulfur and six fluorine atoms. Detection range 0 2000 ppm other ranges available resolution 1 ppm. Sf6 is a very good dielectric material which can resist high potentials. The relaying equipment is aided in this task by circuit breakers. Sf6 emissions reduction partnership exelon has participated in the sf6 emissions reduction partnership with u.
Medium voltage outdoor circuit breaker type ohb uses sulphur hexafluoride gas as insulating and arc quenching medium. Nearly 80% of the sf6 produced worldwide is used by. Sf6 gas is used as the arc quenching medium sulfur hexafluoride sf6 is an electronegative gas and has a strong tendency to absorb free electrons. None disclaimer provided with this information by the compiling agencies this information is formulated for use by elements of the department of defense. Series 3120590 299 guaranteed specifications g2485247 2r 39 lb 17. Exelon has initiated several sf6 program enhancements through our iso 14001 environmental management system and voluntary commitments. Source from anqiu hengan gas manufacture factory on. Yes no sf6 gas pressure of sample psig psig psig psig sf6 gas temperature of sample of of of of new. This circuit breaker range meets iec standard 62271100. Circuit breakers are essential for circuits operating at higher voltages and equipment that carry large currents. Sf1 circuit breakers fixed version from 12 kv to 36 kv sf2 circuit breakers fixed version from 24 kv to 40. Sf6 looks like a liquefied compressed gas when its vapor pressure is 21. Sample date sample cylinder serial number is this a baseline sample. Pole assembly the circuitbreaker is made up of three separate poles.
All sf 6 gas shall be obtained through a central facility. Sf6 gas is used as an insulating medium in high kva breakers. The fg2 circuit breaker employs the latest sf6 technology, co mb ining superior performance with low ma intenance. Aug 17, 2017 a circuit breaker in which the current carrying contacts operate in sulfur hexafluoride or sf6 gas is known as sf6 circuit breaker. Typical for a nonpolar gas, it is poorly soluble in water but quite soluble in nonpolar.
Comed and peco have approximately 200,000 lbs of sf6 in service within twopressure breakers, puffer breakers, circuit switchers, and gas insulating. Removal of sulfur hexafluoride gas from inservice equipment. Energy procedia 17 2012 1447 a 1451 18766102 2012 published by elsevier ltd. It is chemically inert, gaseous even at low temperature, non flammable, non toxic, non corrosive. At earths atmospheric pressures, sulfur hexafluoride gas converts directly from a solid state to a gaseous one. Sf 6 has an octahedral geometry, consisting of six fluorine atoms attached to a central sulfur atom. Sf6 gas servicing equipment enervac international ulc. Sulfur hexafluoride sf6 recycling program for out of. The high voltage conductors, circuit breaker interrupters, switches, current transformers, and voltage transformers are in sf6 gas inside grounded metal enclosures.
Instead of oil, air, or a vacuum, a sulfur hexafluoride circuit breaker uses sulfur hexafluoride gas to cool and quench the arc on opening a circuit. It is colorless, odorless, nontoxic, and nonflammable, and is. A circuit breaker in which the current carrying contacts operate in sulfur hexafluoride or sf6 gas is known as sf6 circuit breaker. Highvoltage circuit breakers have greatly changed since they were first introduced in the mid1950s, and several interrupting principles have been developed that have contributed successively to a large reduction of the operating energy. Breakdown voltage of compressed sulfur hexafluoride sf 6 at very low frequency low frequency 30 khz by jian han a thesis presented in partial fulfillment of the requirements for the degree master of science approved october 2010 by the graduate supervisory committee. Sulphur hexafluoride is a greenhouse gas, and wilful venting to the atmosphere is illegal refer to section 9. Byproducts of sulfur hexafluoride sf6 use in the electric. It has been used extensively in high voltage circuit breakers and other switchgear employed by the power industry. Both compact and dependable, it is ideally suited to the most demanding applications. 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. Prior to removal of gas, check the gas compartment and associated devices for. Exelon continues to phase out the 1st generation breakers wherever possible. Sulfur hexafluoride sf6 gas properties electrical study.
It therefore warrants methodical and careful handling. Precautions handling arced sf6 a chemical breakdown of sulfur hexafluoride sf6 occurs when it is exposed to a very high temperature or electrical arc as in the circuit breaker. Handling and use of sulfur hexafluoride gas page 4 of 8 v. It is colorless, odorless, nontoxic, and nonflammable, and is soluble in water and some. The circuit breaker identification shows how to determine circuit breaker ratings from the mo del nu mber. Advantages over other media include lower operating noise and no. Sulfur hexafluoride revision date 01182018 p000000208 version. Nearly 80% of the sf6 produced worldwide is used by the electric power industry. This document provides the technical procedures for the analysis of sulfur hexafluoride sf. Request pdf investigation on critical breakdown electric field of hot sulfur hexafluoridecarbon tetrafluoride mixtures for high voltage circuit breaker applications sulfur hexafluoride sf6. Online monitoring technology for moisture content of. 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.
Test method d2284 should not be used to evaluate the total amount of. Sulfur hexafluoride is an inert perfluorine, routinely detectable in sea water at. Sulfur hexafluoride sf 6 is an inorganic, colorless, odorless, nonflammable, nontoxic but extremely potent greenhouse gas, and an excellent electrical insulator. Sulfur hexafluoride sf6 molar mass, molecular weight. Because of the properties of sf6 gas such as excellent arc quenching, high electronegative nature, and excellent.
Astm d2472 15 standard specification for sulfur hexafluoride. Sulfur hexafluoride gas sf6 properties instrumentation tools. This specification is intended to apply only to gas as purchased. Advantages over other media include lower operating noise and no emission. Sf 6 gas has excellent insulating property and it has a high electronegativity. Hence, this gas also began to be used in circuit breaker as arc quenching medium. Test method d2284 may be particularly helpful since many sulfur hexafluoride decomposition products are acidic. Jan 02, 2019 a circuit breaker in which sulphur hexafluoride gas or sf 6 gas is used as the arc quinching medium, known as an sf6 circuit breaker. Sulphur hexafluoride medium voltage circuit breakers launched into market from 1971. Sulfur hexafluoride gas sf6 properties heavy, chemically inert, non toxic no poisonous effect on the human body but decomposition products are poisonous color less and odor less it is gaseous at normal room temperature and pressure density is about 6. Why do the sf 6 gases have an excellent heat transfer property. Primarily used as an insulating medium for a wide range of high voltage electrical and electronic equipment such as circuit breakers, switch gears and particles accelerators.
Sulfur hexafluoride electric arc insulator electricity. Sulfur hexafluoride 100 2551624 ingredient name % cas number there are no additional ingredients present which, within the current knowledge of the supplier and in the. Sf6 gas servicing equipment sulfur hexafluoride sf6 is an excellent gaseous dielectric for high voltage power applications. Highvoltage circuit breakers have greatly changed since they were first introduced in the mid1950s, and several interrupting principles have been developed that have contributed successively to a.
Sulfur hexaflouride is an inert, nontoxic, colorless, odorless, tasteless, and nonflammable gas consisting of a sulfur atom surrounded by and tightly bonded to six flourine atoms. A high tension circuit breaker comprising a sealed enclosure having a fixed assembly and a moving assembly disposed therein, said fixed assembly and said moving assembly each including a respective main contact and a respective arcing contact forming an arcing zone, and said enclosure being filled with gas under pressure constituted, at at least in. The dielectric and other physical and chemical properties related to its lack of reactivity have led to the extensive use of sf 6 as an insulating medium in switching equipment e. Ta ble 1 below shows the ratings of av ailable type fg2 circuit breakers. Personal precautions refer to protective measures listed in sections 7 and 8. 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. Jan 02, 2014 sf6 circuit breakers are made from 72550kv with interruption current of 20 to 63 ka and rated current of 1,200 to 12000 amps. Sf 6 circuit breakers are made from 72550kv with interruption current of 20 to 63 ka and rated current of 1,200 to 12000 amps because of the properties of sf 6 gas such as excellent arc quenching, high electronegative nature, and excellent dielectric strength sf 6 circuit breakers are popular for high voltage applications and above. Sulfur hexafluoride circuit breaker operating in a very. Identifying, quantifying and controlling emissions of. Sulfur hexafluoride sf 6 is a relatively nontoxic gas used in a number of applications for its inert qualities. Handling and use of sulfur hexafluoride gas page 6 of 8 b record date, location, and equipment nomenclature on cylinder log.