Patents
Sitemap › H01 - Basic electric elements › H01H - Electric switches; Relays; Selectors; Emergency protective devices › H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584)
07/2003
07/09/2003CN2560088Y Switching buffer energy-storing permanent-magnet operating mechanism
07/09/2003CN2560087Y Outdoor high voltage vacuum circuit breaker
07/09/2003CN2560086Y Permanent magnet step positioning permanent magnetic operating mechanism
07/09/2003CN1114220C Vacuum valve
07/03/2003WO2003055026A2 Armoured station element articulated to the ground
07/03/2003US20030123212 Control system for electrical switchgear
07/03/2003DE20203134U1 SF6 gas isolated switching system has arc suppression stage with connection to gas tank
07/03/2003DE10208703C1 Magnetic drive for MV load switch has drive rod coupled to soft magnetic armature displaced parallel to magnetic field provided by stationary magnetic body
07/02/2003EP1322971A1 Re-locatable partial discharge transducer head
07/02/2003CN1427998A Power circuit breaker with gap between molded insulative casing and grounded barrier insulating operating mechanism
07/02/2003CN1427997A Flexible shunt for electric power switch
07/02/2003CN1427431A 极电枢 Pole armature
06/2003
06/26/2003US20030117145 Internal fault indicator for power electrical devices
06/26/2003DE10156535C1 Leistungsschalter Circuit breaker
06/25/2003EP1321951A1 Compact measurement apparatus for the protection of medium-voltage line
06/25/2003EP1320861A1 Arc protection relay
06/25/2003EP1320860A1 Circuit breaker
06/25/2003EP1245065B1 Integral load connector module
06/25/2003EP0882300B1 Interlock arrangement for stationary mounted circuit breakers
06/25/2003CN2558067Y Single polar low-voltage ac vacuum contactor
06/25/2003CN1426144A Switch device and receptive adaptive device using said switch equipment
06/24/2003US6583978 Limited restrike electric power circuit interrupter suitable for use as a line capacitor and load switch
06/24/2003US6583375 Drive rod for a high-voltage circuit-breaker
06/19/2003WO2003050831A1 Method for predicting a future voltage and/or current curve
06/19/2003US20030112574 Switchgear and receiving transformation apparatus using the same
06/19/2003US20030112569 Gas insulating apparatus and method for locating fault point thereof
06/18/2003CN2556775Y Electric mechanism for high-voltage vacuum isolating load switch
06/17/2003US6580345 Switching device
06/12/2003WO2003049245A1 Switch gear and multi-layer switch gear
06/12/2003DE20305939U1 Clamps for countercontacts for HV pantograph circuit breakers with tubular busbar
06/11/2003EP1317787A1 Circuit breakers
06/11/2003CN1423291A High voltage cut-off switch
06/10/2003US6577067 Switching system using laser induced discharge
06/10/2003US6574864 Method for manufacturing a contact arrangement for a vacuum switching tube
06/05/2003WO2003046939A1 Power switch
06/04/2003EP1316131A1 Locking device for withdrawable circuit-breakers
06/04/2003CN1110828C 液压操作装置 Hydraulically operated device
06/03/2003US6574084 Electromagnetic repulsion driven switch
06/03/2003US6573468 Actuation and control device for high-and medium-voltage circuit breakers
05/2003
05/28/2003EP1245034B1 Device for controlling the closing of a power circuit breaker
05/28/2003DE10150992C1 Zangenkontakt Pliers Contact
05/28/2003DE10144438C1 Antriebseinrichtung für eine Schaltröhre mit einem festen und einem beweglichen Kontaktteil Drive means for switching tube with a fixed and a movable contact element
05/28/2003CN1420516A Gas insulation switchgear
05/28/2003CN1420515A Buffering gas circuit breaker
05/28/2003CN1420514A Integrative full-insulation pole vacuum automatic load switch
05/27/2003US6570747 Low-temperature apparatus
05/22/2003US20030094438 Vacuum interrupter with two contact systems
05/22/2003US20030094437 Puffer type gas circuit breaker
05/22/2003US20030094436 Gas-insulated switchgear
05/21/2003EP1103059B1 Pole of a circuit breaker with an integrated optical current sensor
05/21/2003CN2552152Y Permanent magnetic operating mechanism for vacuum circuit breaker
05/21/2003CN2552151Y Oil buffer for circuit breaker
05/21/2003CN1419325A Three-phase integrated gas isolated bus
05/20/2003US6566621 Metal-ceramic composite and vacuum switch unit using the same
05/15/2003US20030089683 Circuit breaker
05/15/2003US20030089682 Hybrid circuit breaker with a transmission
05/15/2003DE20121796U1 Pole mounting holding and contacting breaker of gas-filled power switch, has cooling fins of specified separation and length along gas flow direction
05/14/2003EP1310970A1 Hybrid circuit breaker with drive
05/14/2003EP1309979A1 A method and an apparatus for controlling an electric switching device
05/14/2003EP1309978A1 A method and a device for prediction of a zero-crossing of an alternating current
05/14/2003EP1147530B1 Actuating shaft for a multipolar circuit breaker and method for producing same
05/14/2003EP0920705B2 Load interrupter switch
05/14/2003CN2550893Y Movable iron core rotation-proof type permanent magnetic operation mechanism
05/14/2003CN2550892Y Voltage keeping and constant device for high voltage breaker hydraulic mechanism
05/14/2003CN1418393A Gas insulation switch
05/14/2003CN1417823A Mixed breaker with drive unit
05/08/2003US20030085200 Device and method for securing bellows and bellows vapor shield to stem prior to brazing
05/07/2003EP0962023B1 Grading ring insert assembly
05/07/2003CN2549579Y Interlocking mechanism of high-voltage switch apparatus
05/07/2003CN1416586A Vacuum interrupter with two contact sysems
05/07/2003CN1416585A Electric circuit breaker, as well as plant, use and method where such is used
05/06/2003US6559404 Vacuum circuit interrupter
05/06/2003US6559403 Three-position electrical switch having a switching element that is movable in axial translation
05/02/2003EP1306868A1 High voltage power circuit breaker with insulating nozzle
05/02/2003EP1306867A1 Improvements made to fuse-holder bases
05/02/2003EP1198812B1 Contact arrangement for a vacuum interrupter
05/02/2003EP1188222B1 Magnetic linear drive
05/02/2003EP1149398B1 Vacuum switching device
05/01/2003US20030080093 Contact for vacuum interrupter and vacuum interrupter using the contact
04/2003
04/30/2003CN2548251Y High-voltage vacuum contactor with semi-axis lock catch
04/30/2003CN2548250Y Iron core for vacuum arc-chutes
04/30/2003CN2548249Y Indoor high-voltage vacuum circuit breaker
04/30/2003CN2548248Y Closed vacuum A.C. contactor
04/30/2003CN1415130A Integral coad connector module
04/30/2003CN1415129A Modular miniaturized swichgear
04/29/2003CA2109260C Overcurrent protection device with programmable communications and inactivity
04/24/2003WO2003034454A1 Clip-on contact
04/24/2003US20030075528 Contact for vacuum interrupter, and vacuum interrupter using same
04/23/2003EP1218906B1 High voltage circuit breaker
04/23/2003EP1149396B1 High voltage circuit breaker, especially a gas-blast circuit breaker
04/23/2003CN2546996Y Thermal expanding self-energy sulfur hexafluoride breake arc-chutes
04/23/2003CN2546995Y Vacuum arc-chutes
04/23/2003CN1413073A Method of producing ceramic element for bonding, ceramic element for bonding, vacuum switch and vacuum container
04/23/2003CN1106654C Three-position switch driving device for electricity supply and distributing switch equipment
04/22/2003US6552675 Electrical protection device with analog-to-digital converter of the sigma-delta type
04/22/2003US6551374 Mixing a copper powder fo improving electrical characteristics of the contact materials, as a matrix, a chromium powder and a heat resistant metal powder; sintering, infiltrating and hot pressing to obtain sintered product
04/17/2003US20030071522 Electrical switchgear with synchronous control system and actuator
04/17/2003US20030070908 Electric transfer switch unit
04/16/2003EP1302959A2 Improvements relating to electrical switches
04/16/2003EP1301935A1 Arc extinguisher with an attachment for low voltage switchgear
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