SF6 Load Break Switch - 3B Energy
MSSF6 Load Break SwitchGas-insulated indoor load break switchfor secondary distribution12 kV - 24 kV - 36 kVaccording to
About us3B Energy can propose a huge number of Pro-ducts related to Energy sector. We are active in thewhole world of Power Transmission and Distribution. Medium Voltage switchgears, Medium Voltageswitches, Low Voltage PC, Low Voltage MCCs withfix and withdrawable units, Transformers, Cabinets;3B Energy can propose a wide range of Productsfor fulfilling any request and need.3B Energy is very active and smart in assistingcustomers for finding Solutions related to Energysector. We can support the customer during engineering phase of the plant, during purchasingsteps, for the supply and after-sales services. 3BEnergy is a real “turnkey” Solution provider; Package Substations, Transfomer Substations, MobileCabinets; we can propose a complete solution setfor letting the customer have one player only forhis whole plant.3B Energy can propose a complete and detailedlist of Services which can cover each step of Engineering phase. Our technical staff is highly expert andprofessional and can support the customer starting from the base design of a single component tilla complete apparatus for electrical application. Wecan design and project every component thecustomer may need: a single contact or a completeswitching device, we can develop and engineer thetechnology for any product or application of Energysector2www.3b-energy.com
MSContentsDescription4Technical Data8Mechanism9Dimensions 11Accessories 12Notewww.3b-energy.com133
MSDescriptionGENERALThe MS is a 12kV, 24 kV and 36 kV medium voltage load break switch and is designed for indoor or outdoormedium voltage switchgear panels.The MS epoxy resin enclosure can provide good insulation and resistance to moisture and environmental pollution.The insulating housing is composed of upper shell and lower shell. It is tightly closed and filled with SF6 gas asinsulation and arc quenching medium.Safety-The epoxy resin enclosure is anti-corrosion, low leakage rate-With viewing window-With pressure release channel-Optional gas pressure meterEconomy-High cost perfomance-Low maintenance cost, 5000 times mechanical life-Long service life, working for at least 30 yearsCompactness and convenience-Simplified design-Small valume, reduced dimensions and weights-Simple to incorporate-Convenient installation and operationReliability-Mature technology-Wide application-A three position switch to prevent incorrect operating4www.3b-energy.com
MSDescriptionThe SF6 gasA non-inflammable gas. SF6 is an inert gas and does not sustain combustion. The seal and thefor-life lubrication of the rotary seals is provided by an oil film. In the MV circuit breaker field, forexample, on more than 20000 SF6 switchgears units insatlled by the French electical utility (EDF)the annual fault rate related to seal problems is less than 0.05%.A very stable gas:The high stability of SF6 gas is due to the 6 covalent bonds of its molecule.An insulating gas:The dialetric strength of SF6 gas is superior to that of most know media, reaching 5 times that ofair at a pressure of a few tenths pf Mpa.A breaking gas:SF6 is “the” breaking gas offering a number of advantages:-high capacity for carrying the heat produced by the arc. The arc is rapidly cooled by convectionduring arcing-High radial thermal conduction and high electron capturing capacity; when the current passesthrough zero: 5 the SF6 permits rapid heat exchange from the center of the arc towards theexterior, 5 the flourine atoms, wich are higly electro-negative , act vertible “traps” for electrons;since it is the electrons wich are mainly responsible for electric conduction in the gas, the gapbetween the contacts at current zero.Very low maintenanceThe eletrical contacts, housed is an sealed for-life enclosure, equire no special maintenance. Theoperating mechanism requires only minimum maintenance at intervals depending on theconditions of use. Under normal operating conditions, no preventive maintenance is requiresdbefore 10.000 operations or 10 years of service.www.3b-energy.com5
MSDescriptionDescription switch unit121. Upper fixed cotact2. Umbrella skirt3. Upper enclosure4. Earthing contact5. Lower enclosure6. Lower Fixed contact7. Gas pressure meter valve8. Inspection window9. Operation shaft3459678Epoxy resin enclosureMS epoxy resin enclosure is a sealed system. The upperand lower housing are closed and screwed together.Each srew is turned with a balanced force to ensure agood sealing system. This feature estabilishes a morereliable dynamic thermal stabilityO ringThe pressure relief valve is located at the rear of the gastank. It relieves interior pressue when SF6 gas is overpressure resulted from an arc fault.6Lower enclosureUpper enclosurePressure relief valvewww.3b-energy.com
MSDescriptionMSInspection windows, gas pressure valve, movablefit and mental plate are sealed to enclosure by Oring, lubricating oil and fastening screws to avoidloosenesss and leak. All these complete a integrated sealing system.1. Gas pressure meter valve2. Inspection windows3. Movable fit123Interlocking SystemMS switch, togheter with operating mechanismand panel system. The switch has three positions:-close-open-earthInterlocking function exists between these threepositions to prevent fault operation. Only whenthe switch is earthed, the panel door can beopened. And when the panel door is open, theswitch is earthed only and no opeation ispermitted.Closedwww.3b-energy.comOpenEarthed7
MSTechnical dataAccessories of MSItemUnitRated voltageKVRated frequencyHz50/60Rated currentA630Rated load breaking currentA630Rated cable charging breaking currentA10Rated short circuit making currentKA50Peak withstand currentKA50Rated short circuit withstand currentKA25Rated short circuit durationS1Power frequency withstand voltage,phase to phase/phaseKV285070Power frequency withstand voltage,interrupting gap (effective value)KV326082Lightning impulse withstand voltage,phase to phase/phase to groundKV75125170Lightning impulse withstand voltage,interrupting gapKV85145195Mechanical lifeTimesRating122436to ground (effective value)Protection degree 5000 2000IP3XService conditions:AltitudeSurrounding temperatureRelative humidity 2000 m‐10 45 CelsiusAverage daily should not be more than 95%Average monthly should not be more than 90%No obvious dust, smoke, corrosive or flammable gas, vapour or salt pollutionNo frequent strenuous vibration*** Pls contact us if you have a different request8www.3b-energy.com
MSMechanismGeneral description of mechanismThere are two types of operating mechanisms:the single spring device and the double spring device.Motor operation can be added to both types of operating mechanisms.Single spring deviceDouble spring deviceSingle spring devicewith motor operationDouble spring devicewith motor operationDescription CIT mechanismCITA Switch cover fastening1. Earthing lever inlet2. Switch lever3. Multifunction plate4. Front plate5. Rear platewww.3b-energy.com9
MSMechanismDescription CI1 MechanismCI1A Switch cover fastening1. Earthing lever inlet2. Switch lever inlet3. Multifunction plate4. Front plate5. Rear plate6. Opening push-buttonInterlocking in the Mechanism When the switch disconnector is closed the earthing circuit cannotbe activated. When the earthing circuit is closed, the switch disconnector inopen position for the main circuit cannot be operated. Padlock provision to prevent tempering with the mechanism. The lower cover (door) can be opened only whilst the EC is closed.10www.3b-energy.com
MSMS 12DimensionsMS 24Side viewFront view840100210350210179,5417.5212,5220191940365MS 36Side nt view:www.3b-energy.com11
MSAccessoriesAccessories of MSOperating handleEarthing switchGas pressure gaugeBusbar field distributorFuse trip system for fuse - switchBusbar field distributor new typelower Busbar field distributor new typeMechanism coverVoltage presence indicatorCoilCapacitive divider12Switch body fixed platewww.3b-energy.com
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3B ENERGY S.r.l.REGISTERED OFFICEVia Villani, 2 26900 LODI (LO) - ItalyPh. 39 0371 1856259Fax. 39 0371 9568847www.3b-energy.cominfo@3b-energy.com
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)
.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
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Apr 06, 2020 · Medium Voltage SF6 Switch 26 05 45 - 6 Lifting and mounting provisions. Parking stands on 200 Amp ways. Motor-operators for SCADA switching. Motor-operators, voltage and current sensors for Automatic Load Transfer Switching. Fault interrupter remote status.
Wiring accessories are used for connecting appliances (Fig. 3.4). (a) Switch A switch is used to make or break an electrical circuit. It is used to switch ‘on’ or ‘off ’ the supply of electricity to an appliance. There are various switches such as y surface switch y flush switch y ceiling switch y pull switch y push button switch y bed .
The XilMailbox library provides the top-level hooks for sending or receiving an inter-processor interrupt (IPI) message using the Zynq UltraScale MPSoC and Versal ACAP IPI hardware. Chapter 1: Xilinx OS and Libraries Overview
