New Concept Vacuum Circuit Breaker - Toshiba Brochure_296.pdf · Vacuum Circuit Breaker Front View...
Transcript of New Concept Vacuum Circuit Breaker - Toshiba Brochure_296.pdf · Vacuum Circuit Breaker Front View...
NewNew ConceptConceptVacuum Circuit BreakerVacuum Circuit Breaker
SMART VCBTYPE “VZ”
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�����������������������������������������������������������������������������������������SUMMARYSUMMARYSUMMARY
1.1.New Vacuum Arc ControlNew Vacuum Arc Control
TechnologyTechnology
2.2.High Reliability OperatingHigh Reliability Operating
MechanismMechanism
Vacuum Circuit BreakerVacuum Circuit Breaker
Front View
1212kV-1250A-40kAkV-1250A-40kASide Cross Section
VacuumVacuumInterrupterInterrupterOperatingOperating
MechanismMechanism
FrameFrameRear View
Electrode
Vacuum InterrupterVacuum Interrupter
CurrentCurrentCarryingCarrying
RodRod
ContactContactAxial
MagneticField
CoilCoil
Axial Magnetic Field ElectrodeAxial Magnetic Field Electrode
ElectrodeElectrode AnodeAnode
CathodeCathode
Vacuum ArcVacuum Arc
InsulationInsulationEnclosureEnclosure
����������������������������������������������������������������������FeaturesFeaturesFeatures
1. 1. High Current Interrupting CapabilityHigh Current Interrupting Capability
2.Reduction of Operating Energy
•• Development of Contact Material
•• Optimizing Closing Cam
••Improvement of Electrode ConstructionImprovement of Electrode Construction
New Vacuum Arc Control TechnologyNew Vacuum Arc Control Technology
Mag
netic
Fie
ldM
agne
tic F
ield
Inte
nsity
Inte
nsity
Axial Magnetic FieldAxial Magnetic FieldElectrodeElectrode
Self Arc Diffusion bySelf Arc Diffusion byElectrodeElectrode
CathodeCathode
AnodeAnode
CathodeCathode
AnodeAnode
Position on ElectrodePosition on Electrode Position on ElectrodePosition on Electrode
((AMF)AMF) ((SADE)SADE)
Comparison of Electrode DiameterComparison of Electrode Diameterand Vacuum Interrupterand Vacuum Interrupter
19601960ssSpiralSpiral
19801980ssAMFAMF SADESADE
PresentPresent
1212kV-1250A-25kAkV-1250A-25kA
����������������������������������������������������������������������FeaturesFeaturesFeatures1. High Current Interrupting Capability
2.2.Reduction of Operating EnergyReduction of Operating Energy
• Improvement of Electrode Construction
•• Development of Contact MaterialDevelopment of Contact Material
•• Optimizing Closing CamOptimizing Closing Cam
During Closing
Opening Position
ClosingClosingSpringSpring
ContactContactForce SpringForce Spring ClosingClosing
CamCam
OpeningOpeningSpringSpring
ContactContact
Operating MechanismOperating Mechanism
Comparison of Operating Energy(25kA)Comparison of Operating Energy(25kA)
Conventional Present
Contact Travel Energy
Opening Spring EnergyO
pera
ting
Ener
gy [J
]
0000
1 01 01 01 0
2 02 02 02 0
3 03 03 03 0
4 04 04 04 0
5 05 05 05 0
6 06 06 06 0
7 07 07 07 0
8 08 08 08 0
Contact Force Spring Energy
����������������������������������������������������������������������������Type TestType TestType Test•• Short-CircuitShort-Circuit Current Test Current Test•• Mechanical Life TestMechanical Life Test•• Temperature Rise TestTemperature Rise Test•• Short Time Withstand testShort Time Withstand test
•• Mechanical Operating TestMechanical Operating Test
•• Out-of-Phase Making and Breaking TestOut-of-Phase Making and Breaking Test•• CapacitiveCapacitive Current Switching test Current Switching test
•• Measurement of The Resistance of Main CircuitMeasurement of The Resistance of Main CircuitTestTest
Short-CircuitShort-Circuit Test Result Test Result(12(12kV-40kA)kV-40kA)
VZ-10R40 (12kV-4000A-40kA)VZ-10R40 (12kV-4000A-40kA)
Front View
Rear View