Industry
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CPC
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H01H33/00
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H01H33/002Very heavy-current switches
H01H33/004making use of superconducting contacts
H01H33/006adapted for interrupting fault currents with delayed zero crossings
H01H33/008Pedestal mounted switch gear combinations
H01H33/02Details
H01H33/021Use of solid insulating compounds resistant to the contacting fluid dielectrics and their decomposition products
H01H33/022particular to three-phase circuit breakers
H01H33/025Terminal arrangements
H01H33/027Integrated apparatus for measuring current or voltage
H01H33/04Means for extinguishing or preventing arc between current-carrying parts
H01H33/045for arcs formed during closing
H01H33/06Insulating body insertable between contacts
H01H33/08Stationary parts for restricting or subdividing the arc
H01H33/10Metal parts
H01H33/12Auxiliary contacts on to which the arc is transferred from the main contacts
H01H33/121Load break switches
H01H33/122both breaker and sectionaliser being enclosed
H01H33/123in which the auxiliary contact pivots on the main contact-arm and performs a delayed and accelerated movement
H01H33/124the auxiliary contact being a whip contact
H01H33/125comprising a separate circuit breaker
H01H33/126being operated by the distal end of a sectionalising contact arm
H01H33/127movable with a sectionalising contact arm and operated by such movement
H01H33/128being operated by a separate mechanism interlocked with the sectionalising mechanism
H01H33/14Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
H01H33/143of different construction or type
H01H33/16Impedances connected with contacts
H01H33/161Variable impedances
H01H33/162Liquid resistors
H01H33/164the impedance being inserted in the circuit by blowing the arc onto an auxiliary electrode
H01H33/165Details concerning the impedances
H01H33/166the impedance being inserted only while closing the switch
H01H33/167the impedance being inserted only while opening the switch
H01H33/168the impedance being inserted both while closing and while opening the switch
H01H33/18using blow-out magnet
H01H33/182using permanent magnets
H01H33/185using magnetisable elements associated with the contacts
H01H33/187comprising a hollow annular arc runner and a central contact between which a radially drawn arc rotates
H01H33/20using arcing horns
H01H33/22Selection of fluids for arc-extinguishing
H01H33/24Means for preventing discharge to non-current-carrying parts
H01H33/245using movable field electrodes
H01H33/26Means for detecting the presence of an arc or other discharge
H01H33/28Power arrangements internal to the switch for operating the driving mechanism
H01H33/285using electro-dynamic repulsion
H01H33/30using fluid actuator
H01H33/302for fluid insulated switchgear, wherein the insulating fluid is also the working fluid
H01H33/304Working fluid supplies
H01H33/32pneumatic
H01H33/34hydraulic
H01H33/36using dynamo-electric motor
H01H33/38using electromagnet
H01H33/40using spring motor
H01H33/42Driving mechanisms
H01H33/423making use of an electromagnetic wave communication
H01H33/44Devices for ensuring operation of the switch at a predetermined point in the ac cycle
H01H33/46Interlocking mechanisms
H01H33/48for interlocking between casing or cover and mechanism for operating contacts
H01H33/50for interlocking two or more parts of the mechanism for operating contacts
H01H33/52for interlocking two or more switches
H01H33/53Cases Reservoirs, tanks, piping or valves, for arc-extinguishing fluid Accessories therefor
H01H33/55Oil reservoirs or tanks Lowering means therefor
H01H33/555Protective arrangements responsive to abnormal fluid pressure, liquid level or liquid displacement
H01H33/56Gas reservoirs
H01H33/561composed of different independent pressurised compartments put in communication only after their assemblage
H01H33/562Means for avoiding liquefaction or for disposing of liquefaction products
H01H33/563comprising means for monitoring the density of the insulating gas
H01H33/565Gas-tight sealings for moving parts penetrating into the reservoir
H01H33/57Recuperation of liquid or gas
H01H33/58Silencers for suppressing noise of switch operation
H01H33/59Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for
H01H33/593for ensuring operation of the switch at a predetermined point of the ac cycle
H01H33/596for interrupting dc
H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
H01H33/62wherein the break is in air at atmospheric pressure
H01H33/64wherein the break is in gas
H01H33/66Vacuum switches
H01H33/6606Terminal arrangements
H01H33/662Housings or protective screens
H01H33/66207Specific housing details
H01H33/66238Specific bellows details
H01H33/66261Specific screen details
H01H33/664Contacts Arc-extinguishing means
H01H33/6641making use of a separate coil
H01H33/6642having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil
H01H33/6643having disc-shaped contacts subdivided in petal-like segments
H01H33/6644having coil-like electrical connections between contact rod and the proper contact
H01H33/6645in which the coil like electrical connections encircle at least once the contact rod
H01H33/6646having non flat disc-like contact surface
H01H33/6647having fixed middle contact and two movable contacts
H01H33/666Operating arrangements
H01H33/6661Combination with other type of switch
H01H33/6662using bistable electromagnetic actuators
H01H33/6664with pivoting movable contact structure
H01H33/668Means for obtaining or monitoring the vacuum
H01H33/6683by gettering
H01H33/68Liquid-break switches
H01H33/70Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
H01H33/7007wherein the flow is a function of the current being interrupted
H01H33/7015characterised by flow directing elements associated with contacts
H01H33/7023characterised by an insulating tubular gas flow enhancing nozzle
H01H33/703having special gas flow directing elements
H01H33/7038characterised by a conducting tubular gas flow enhancing nozzle
H01H33/7046having special gas flow directing elements
H01H33/7053having a bridging element around two hollow tubular contacts
H01H33/7061characterised by use of special mounting means
H01H33/7069characterised by special dielectric or insulating properties or by special electric or magnetic field control properties
H01H33/7076characterised by the use of special materials
H01H33/7084characterised by movable parts influencing the gas flow
H01H33/7092characterised by several arcing chambers in series
H01H33/72having stationary parts for directing the flow of arc-extinguishing fluid
H01H33/73wherein the break is in air at atmospheric pressure
H01H33/74wherein the break is in gas
H01H33/75Liquid-break switches
H01H33/76wherein arc-extinguishing gas is evolved from stationary parts Selection of material therefor
H01H33/765the gas-evolving material being incorporated in the contact material
H01H33/77wherein the break is in air at atmospheric pressure
H01H33/78wherein the break is in gas
H01H33/80flow of arc-extinguishing fluid from a pressure source being controlled by a valve
H01H33/82the fluid being air or gas
H01H33/83wherein the contacts are opened by the flow of air or gas
H01H33/84the fluid being liquid
H01H33/85wherein the contacts are opened by the flow of liquid
H01H33/86the flow of arc-extinguishing fluid under pressure from the contact space being controlled by a valve
H01H33/88the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
H01H33/882the movement being assisted by accelerating coils
H01H33/884with variable-area piston
H01H33/886by movement of rotating pistons
H01H33/90this movement being effected by or in conjunction with the contact-operating mechanism
H01H33/901making use of the energy of the arc or an auxiliary arc
H01H33/903and assisting the operating mechanism
H01H33/904characterised by the transmission between operating mechanism and piston or movable contact
H01H33/905the compression volume being formed by a movable cylinder and a semi-mobile piston
H01H33/91the arc-extinguishing fluid being air or gas
H01H33/92the arc-extinguishing fluid being liquid
H01H33/94this movement being effected solely due to the pressure caused by the arc itself or by an auxiliary arc
H01H33/95the arc-extinguishing fluid being air or gas
H01H33/96the arc-extinguishing fluid being liquid
H01H33/98the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow
H01H33/982in which the pressure-generating arc is rotated by a magnetic field