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1、Circuit Breaker ELK SP3Circuit Breaker ELK SP3Puffer piston principleInterrupter Unit ELK SP3closedextinguishopencommutatePuffer piston principleCircuit Breaker ELK SP3for the operation rod of the circuit-breaker1SF6-gas2impact seal for the OPEN position3seal for axial movement4impact seal for the C
2、LOSED positionclosed position open position1234Double Sealing SystemType: HMB8Piston stroke: 205 mmSwitching sequence: O-CO-1min-CO or CO-30sec-COMounting position: vertical / horizontalDisk spring assembly: 16 x 485 mmWeight (total operating mechanism) : 468 kgCB Operating Mechanism HMB8High pressu
3、re partDifferential pistonoperating principleLow pressure partCB Operating Mechanism HMB8High pressure partLow pressure partCB Operating Mechanism HMB8Charging Module (HMB8)nPump motornGearnOil gaugenHydraulic pump unitnOil drainControl Module (HMB8)nChangeover valvenPilot valves - two opening valve
4、s - one closing valvenThrottle screws open/closenHigh-pressure test connectorMonitoring Module (HMB8)nSpring limit switch with rotating shaftnSpring tension indicatornPressure release valveDisconnector ELK T.3ELK TE3ELK TX3ELK TV3ELK TW3Overview of typesDisconnector Contacts Disconnector and Earthin
5、g Switchesdisconnectorearthing switchfast-acting earthing switchMaintenance Earthing Switch ELK EM3with operating mechanismand earthing bridge acrossthe isolationMaintenance Earthing Switch ELK EM3Fast-acting Earthing Switch ELK EB3with operating mechanismand earthing bridge across the isolationFast
6、-acting Earthing Switch ELK EB3Voltage Transformer ELK PI3Current Transformer ELK CB3Surge Arrester ELK AZ3Connecting Elements ELK .3VXVWVTVLVG/VIConnecting Bus ELK VG3Flange Joints ELK-3with insulatorwith insulator and grease-nipplesflange connectionwith grease-nippleFor outdoor applicationInsulato
7、r ELK I.3Partition Support insulatorIG3IO3Insulator Bus Connection ELK-3Lateral Dismantling Unit ELK VQ3Compensating Units ELK-3Expansion Compensator ELK BD3Parallel Compensator ELK VP3Corrosion Protection ELK-3 Type of Paint Paint LayersIndoorsOutdoors DesignationNormalExtremeNormal Extreme Cast an
8、d stainless1 cover layer C51 cover layer C51 basic layer B41 cover layer C61 basic layer B41 interm. Layer C8 1 cover layer C6 EncapsulationsMain Features:nselfcleaning silicon rubber shedsnalternating shedsnhigh creepage distancenmain insulation by SF6-gasnfield grading electrodenabsolutely explosi
9、on proofnhigh safety for staffnno secondary damagesnseismic proofnhigh resistivity against sandstormnlow weightnmaintenance freeBushing ELK HB3 with Composite InsulatorMain Features:nporcelain insulatornalternating shedsnhigh creepage distancenresin impregnated paper corencapacitor layers for electr
10、ic field controlncompressible fillingnexplosion proofnhigh safety for staffnno secondary damagesnmaintenance freeBushing with Porcelain InsulatorBushing ELK H.3HD RAKFwith porcelain insulatorHB3with composite insulatorCable Connection ELK HK3Limit of supplyTransformer Connection ELK HT3Limit of supplySF6 Gas MonitoringMollier diagramme 550 kVcircuit-breakerother compartmentsfilling pressurealarm pressureblocking pressurePressure kPa abs.Density g/dmTemperature CGas PressuresDensity Monitor ELK WT3functional diagrammePressure Relief DeviceContact Inspectionwith portable endoscope
