Three-phase Encapsulated Type SF6 Gas Insulated . - Fuji Electric
Typical Arrangement［Unit : mm］Fig.8 Cable feeder unit with double busber (Tr.bay)4685DS/ESThree-phase Encapsulated TypeSF6 Gas Insulated SwitchgearDSType SDH714 for 72.5 to 145 kV2820CBCTESFig.9 Bus coupler unit33502960DS/ESDS/ESCTCBCTFig.10 Cable feeder unit with double e City Ohsaki, East Tower, 11-2, Osaki 1-chome, Shinagawa-ku, Tokyo 141-0032, JapanPhone : (03)5435-7111Internet address : http://www.fujielectric.co.jpInformation in this catalog is subject to change without notice.2016-4(D2016/D2016)OD1FOLS Printed in Japan06B1-E-0020
Small Space Requirement, High Reliability and Safetyー 72.5 to 145kV GIS, SDH714The number of application for SF6 gas insulatedswitchgear has been tremendously growing allover the world, because it has many advantageousfeatures as below: Small space requirement High reliability Safety Good harmony with environment Long maintenance interval Short erection period at siteFuji started the development of SF6 gas insulatedswitchgear (GIS) in the 1960’s.The first 72.5 kV GIS, which was of the phasesegregated type, was put into operation in 1970.Since then Fuji has also developed three-phaseencapsulated type GIS and supplied the first 72.5 kVthree-phase encapsulated GIS in 1975. The threephase encapsulated GIS for 72.5 to 145 kV as ofnow, type SDH was developed in 2001, and havebeen supplied all over the world. Based on theseexperiences with high and long term technology, Fujihas successfully developed an updated version ofthe type SDH, namely, SDH714.The 72.5 kV and above GIS is being manufacturedin our substation equipment factory located in Chibaprefecture, Japan. The substation equipment factoryhas been recognized to be in accordance with therequirements of the quality standards ISO 9001.Characteristic FeaturesCompact design makes for minimum spacerequirements and transportation by container service.Therefore, the costs of foundations, buildings andtransportation can be minimized.The fully earthed enclosure protects operatorsnot to touch live parts directly, prevents from radiointerference, and realizes no atmospheric pollution.Aluminum alloy enclosure is used to reduce weightand power dissipation.The modular design principle applied realizes thestandardization of components and parts.This makes possible the large quantity productionway which increases the reliability of componentsand parts with their easy stock control.Unified SF6 gas pressure throughout theswitchgear makes simplified gas maintenance work.Technical DataRated voltage[kV] 72.5123145Rated power frequency[kV] Common values 140withstand voltage Across the isolating distance 160230275265315550650630750Rated lightning impulse[kV] Common values 325withstand voltage Across the isolating distance 375Rated normal current[A] Busbar up to 3150Others up to 3150Rated short-circuit breaking current[kA] up to 40Rated short-time withstand current (3 s)[kA] up to 40Rated peak withstand current[kA] up to 100Rated SF6 gas pressure, gauge[MPa] Switchgear 0.6(at 20 ) Circuit breaker 0.6Rated break time of circuit breaker[cycles] 3Rated operating sequence of circuit breaker O-0.3 s-CO-3 min.-CO,O-3 min.-CO-3 min.-CO,CO-15 s-COBay width[mm] 900Number of mechanical operations of circuit breaker and disconnector Class M2 (10000 operations)Applicable standards : IEC12
Small Space Requirement, High Reliability and Safetyー 72.5 to 145kV GIS, SDH714The number of application for SF6 gas insulatedswitchgear has been tremendously growing allover the world, because it has many advantageousfeatures as below: Small space requirement High reliability Safety Good harmony with environment Long maintenance interval Short erection period at siteFuji started the development of SF6 gas insulatedswitchgear (GIS) in the 1960’s.The first 72.5 kV GIS, which was of the phasesegregated type, was put into operation in 1970.Since then Fuji has also developed three-phaseencapsulated type GIS and supplied the first 72.5 kVthree-phase encapsulated GIS in 1975. The threephase encapsulated GIS for 72.5 to 145 kV as ofnow, type SDH was developed in 2001, and havebeen supplied all over the world. Based on theseexperiences with high and long term technology, Fujihas successfully developed an updated version ofthe type SDH, namely, SDH714.The 72.5 kV and above GIS is being manufacturedin our substation equipment factory located in Chibaprefecture, Japan. The substation equipment factoryhas been recognized to be in accordance with therequirements of the quality standards ISO 9001.Characteristic FeaturesCompact design makes for minimum spacerequirements and transportation by container service.Therefore, the costs of foundations, buildings andtransportation can be minimized.The fully earthed enclosure protects operatorsnot to touch live parts directly, prevents from radiointerference, and realizes no atmospheric pollution.Aluminum alloy enclosure is used to reduce weightand power dissipation.The modular design principle applied realizes thestandardization of components and parts.This makes possible the large quantity productionway which increases the reliability of componentsand parts with their easy stock control.Unified SF6 gas pressure throughout theswitchgear makes simplified gas maintenance work.Technical DataRated voltage[kV] 72.5123145Rated power frequency[kV] Common values 140withstand voltage Across the isolating distance 160230275265315550650630750Rated lightning impulse[kV] Common values 325withstand voltage Across the isolating distance 375Rated normal current[A] Busbar up to 3150Others up to 3150Rated short-circuit breaking current[kA] up to 40Rated short-time withstand current (3 s)[kA] up to 40Rated peak withstand current[kA] up to 100Rated SF6 gas pressure, gauge[MPa] Switchgear 0.6(at 20 ) Circuit breaker 0.6Rated break time of circuit breaker[cycles] 3Rated operating sequence of circuit breaker O-0.3 s-CO-3 min.-CO,O-3 min.-CO-3 min.-CO,CO-15 s-COBay width[mm] 900Number of mechanical operations of circuit breaker and disconnector Class M2 (10000 operations)Applicable standards : IEC12
Typical Section of a UnitComponents and ConstructionCircuit BreakerFig.1 Sectional view of a cable feeder unit with double busbar A motor-charged spring operating mechanism is applied. Three interrupters are commonly operated through insulatingoperating rods and a link mechanism. Combination of a thermal puffer chamber and a mechanicalpuffer chamber can achieve excellent breaking performancefrom small current to large current with a small operationpower.VTDS/ESBUSCB Maintenance free up to 2000 times load breaking. Mechanically type tested for 10000 operations. (class ousingFig.3 Principle of arc quenching ClosedpositionCHdPressure reliefvalveInsulatingrodThermal pufferchamberMechanical ontactMovingcontactArcingcontact Opening(Priming)CBDSESCT: Circuit breaker: Disconnecting switch: Earthing switch: Current transformerVT: Voltage transformerCHd : Cable sealing endBUS : Bus bar Opening(arc quenching)Fig.2 Single line diagram of a cable feeder unit with double busbarBusbarMaintenanceearthing switchMake-proofearthing switchMaintenanceearthing torCable sealing end(supplied by cable supplier) OpenpositionSurge arrester(option)4
Typical Section of a UnitComponents and ConstructionCircuit BreakerFig.1 Sectional view of a cable feeder unit with double busbar A motor-charged spring operating mechanism is applied. Three interrupters are commonly operated through insulatingoperating rods and a link mechanism. Combination of a thermal puffer chamber and a mechanicalpuffer chamber can achieve excellent breaking performancefrom small current to large current with a small operationpower.VTDS/ESBUSCB Maintenance free up to 2000 times load breaking. Mechanically type tested for 10000 operations. (class ousingFig.3 Principle of arc quenching ClosedpositionCHdPressure reliefvalveInsulatingrodThermal pufferchamberMechanical ontactMovingcontactArcingcontact Opening(Priming)CBDSESCT: Circuit breaker: Disconnecting switch: Earthing switch: Current transformerVT: Voltage transformerCHd : Cable sealing endBUS : Bus bar Opening(arc quenching)Fig.2 Single line diagram of a cable feeder unit with double busbarBusbarMaintenanceearthing switchMake-proofearthing switchMaintenanceearthing torCable sealing end(supplied by cable supplier) OpenpositionSurge arrester(option)4
BusbarFig.4 Line disconnector and earthing switchThree phase conductors made of aluminium or copper, dependingon the current rating, are supported by gas tight insulators.Disconnectors and Earthing SwitchesLine disconnector combined with a maintenance earthing switchforms a three-position switch.Busbar disconnectors are assembled in each busbar compartment.One of them is combined with a maintenance earthing switch andforms a three-position switch. The disconnector has a switchingcapability of bus-transfer current, small capacitive current as buscharging and small inductive current as transformer magnetizingcurrent, if required.Earthed side of the earthing switch is brought out from the earthedmetal housing and earthed to it through a removable link forprimary injection test.Disconnectors and earthing switches are normally motor ormanual-operated.The make-proof earthing switch is provided with a motor-chargedspring operation mechanism.Current TransformerFixed contactof disconnectorFixed contact ofearthing switchMoving contactof disconnectorMoving contact ofearthing switchSF6 Gas SystemRated SF6 gas pressure is unified at 0.6 MPa (gauge) for allcompartments.SF6 gas pressure changes depending on the ambient temperatureas shown in Fig.6.The monitoring of SF6 gas is carried out by means of temperaturecompensated pressure switches in the manner as tabled below.[at 20 ]ComponentsMoving contact ofearthing switchFixed contact ofearthing switchRatedSF6 gaspressure[MPa]Circuit ure[MPa]0.60.550.5Disconnectors and earthing switches 0.60.55Note 1Other components0.55－0.6Fig.7 shows the typical gas zones and gas monitoring system.The SF6 gas filled disconnector / (earthing switch) / busbar compartment is sealed off from the adjacent unit by gas tight and arcproof insulators.A similar insulator seals off this compartment from the circuitbreaker.All gas zones are monitored by gas density relays.The switchgear has a very low gas leakage rate.Guaranteed gas loss is less than 0.5 % per annum and typetested for 0.1% per annum.Fig.7 SF6 gas systemNote 1 : Operation lockout at 0.5 MPa (at 20 ) is upon request.PSFig.6 Pressure-temperature characteristic curve of SF6 gasFig.5 Current transformerTerminal boxThe current transformer is of foil-insulated type with ring coremounted in the CB enclosure. SF6 gas provides the high-voltageinsulation. A separate compartment is available upon request.Primaryconductor［MPa］0.8PSCondensation curve0.70.6PressureVoltage TransformerThe voltage transformer is of induction type. SF6 provides thehigh-voltage insulation.0.50.4PS0.3Surge ArresterThe surge arrester consists of zinc oxide (ZnO) element withexcellent low residual voltage characteristics and long service life.50.1CoreTerminal boxSecondarywinding0 40: Gas-tight disconnectorRated pressure(0.6MPa at 20 )0.2PS: Stopping valve(N.O.)Alarm pressure(0.55MPa at 20 ): Stopping valve(N.C.)Lockout pressure(0.5MPa at 20 ): Gas pressure gaugePS : Gas pressure switch 30 20 1001020Temperature30405060［ ］: Gas port6
BusbarFig.4 Line disconnector and earthing switchThree phase conductors made of aluminium or copper, dependingon the current rating, are supported by gas tight insulators.Disconnectors and Earthing SwitchesLine disconnector combined with a maintenance earthing switchforms a three-position switch.Busbar disconnectors are assembled in each busbar compartment.One of them is combined with a maintenance earthing switch andforms a three-position switch. The disconnector has a switchingcapability of bus-transfer current, small capacitive current as buscharging and small inductive current as transformer magnetizingcurrent, if required.Earthed side of the earthing switch is brought out from the earthedmetal housing and earthed to it through a removable link forprimary injection test.Disconnectors and earthing switches are normally motor ormanual-operated.The make-proof earthing switch is provided with a motor-chargedspring operation mechanism.Current TransformerFixed contactof disconnectorFixed contact ofearthing switchMoving contactof disconnectorMoving contact ofearthing switchSF6 Gas SystemRated SF6 gas pressure is unified at 0.6 MPa (gauge) for allcompartments.SF6 gas pressure changes depending on the ambient temperatureas shown in Fig.6.The monitoring of SF6 gas is carried out by means of temperaturecompensated pressure switches in the manner as tabled below.[at 20 ]ComponentsMoving contact ofearthing switchFixed contact ofearthing switchRatedSF6 gaspressure[MPa]Circuit ure[MPa]0.60.550.5Disconnectors and earthing switches 0.60.55Note 1Other components0.55－0.6Fig.7 shows the typical gas zones and gas monitoring system.The SF6 gas filled disconnector / (earthing switch) / busbar compartment is sealed off from the adjacent unit by gas tight and arcproof insulators.A similar insulator seals off this compartment from the circuitbreaker.All gas zones are monitored by gas density relays.The switchgear has a very low gas leakage rate.Guaranteed gas loss is less than 0.5 % per annum and typetested for 0.1% per annum.Fig.7 SF6 gas systemNote 1 : Operation lockout at 0.5 MPa (at 20 ) is upon request.PSFig.6 Pressure-temperature characteristic curve of SF6 gasFig.5 Current transformerTerminal boxThe current transformer is of foil-insulated type with ring coremounted in the CB enclosure. SF6 gas provides the high-voltageinsulation. A separate compartment is available upon request.Primaryconductor［MPa］0.8PSCondensation curve0.70.6PressureVoltage TransformerThe voltage transformer is of induction type. SF6 provides thehigh-voltage insulation.0.50.4PS0.3Surge ArresterThe surge arrester consists of zinc oxide (ZnO) element withexcellent low residual voltage characteristics and long service life.50.1CoreTerminal boxSecondarywinding0 40: Gas-tight disconnectorRated pressure(0.6MPa at 20 )0.2PS: Stopping valve(N.O.)Alarm pressure(0.55MPa at 20 ): Stopping valve(N.C.)Lockout pressure(0.5MPa at 20 ): Gas pressure gaugePS : Gas pressure switch 30 20 1001020Temperature30405060［ ］: Gas port6
Typical Arrangement［Unit : mm］Fig.8 Cable feeder unit with double busber (Tr.bay)4685DS/ESThree-phase Encapsulated TypeSF6 Gas Insulated SwitchgearDSType SDH714 for 72.5 to 145 kV2820CBCTESFig.9 Bus coupler unit33502960DS/ESDS/ESCTCBCTFig.10 Cable feeder unit with double e City Ohsaki, East Tower, 11-2, Osaki 1-chome, Shinagawa-ku, Tokyo 141-0032, JapanPhone : (03)5435-7111Internet address : http://www.fujielectric.co.jpInformation in this catalog is subject to change without notice.2016-4(D2016/D2016)OD1FOLS Printed in Japan06B1-E-0020
Rated short-time withstand current (3 s) [kA] up to 40 Rated peak withstand current [kA] up to 100 Rated SF6 gas pressure, gauge [MPa] Switchgear 0.6 (at 20 ) Circuit breaker 0.6 Rated break time of circuit breaker [cycles] 3 Rated operating sequence of circuit breaker O-0.3 s-CO-3 min.-CO,
.2 Across the open breaker.3 Phase to phase.4 Pole to pole center distance 5.2 Arc quenching Medium.1 Nominal pressure SF6 (@20 C) (Normal).2 Signal loss of SF6 (@20 C) (Alarm).3 General lockout (@20 C) (Lockout).4 Quantity of SF6 gas required per breaker.5 Qty of gas being suppli
concept, the SFset circuit breaker with integrated protection functions. SF6 switchgear is thus capable of meeting the most demanding requirements of public and industrial distribution networks world-wide, up to 40.5 kV. 0SF circuit breakers, 1 to 40.5 kV SF6 gas
This presentation was given at th e US EPA's 2014 Workshop on SF6 Reduction Strategies held May 6-7, 2014. Keywords: Do's and Don'ts of SF6 Gas Handling, Jeff Spoljarick, Dave Smithberger, US EPA, Electric Power Workshop, 2014 Created Date: 5/28/2014 10:48:45 PM
Merlin Gerin offers an SF6 circuit breaker, the Fluarc FB. 1975 this is innovation ; applying the SF6 technique to switches with the Vercors M6 for MV/LV transformer substations. the Fluarc FB circuit breaker becomes available for systems with a rated voltage of 36 kV. 1977 A new breaking technique, the rotating
A non-inflammable gas. SF6 is an inert gas and does not sustain combustion. The seal and the for-life lubrication of the rotary seals is provided by an oil film. In the MV circuit breaker field, for example, on more than 20000 SF6 switchgears units insatlled by the French electical utility (EDF)
wound 3 phase motors. Rotary Phase Converter A rotary phase converter, abbreviated RPC, is an electrical machine that produces three-phase electric power from single-phase electric power. This allows three phase loads to run using generator or utility-supplied single-phase electric power. A rotary phase converter may be built as a motor .
6.2.1.Conventional Single Phase to Three-Phase Power Converter Circuits In the classical method of single-phase to three-phase conversion the single-phase power supply is given to the converter, which can either be full, or half bridge type, in cascade with a three-phase inverter with a dc link capacitor in between. The
Artificial intelligence (AI) is transforming the global financial services industry. As a group of rapidly related technologies that include machine learning (ML) and deep learning(DL) , AI has the potential to disrupt and refine the existing financial services industry. I review the extant academic, practitioner and policy related literatureAI. I also detail the AI, ML and DL taxonomy as well .
