EP1212768A1 - Vorrichtung zur innendruckmessung, spannungskonditionierung und stromkonditionierung von vakuumschaltröhren und verfahren hierfür - Google Patents
Vorrichtung zur innendruckmessung, spannungskonditionierung und stromkonditionierung von vakuumschaltröhren und verfahren hierfürInfo
- Publication number
- EP1212768A1 EP1212768A1 EP00964008A EP00964008A EP1212768A1 EP 1212768 A1 EP1212768 A1 EP 1212768A1 EP 00964008 A EP00964008 A EP 00964008A EP 00964008 A EP00964008 A EP 00964008A EP 1212768 A1 EP1212768 A1 EP 1212768A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- current
- internal pressure
- vacuum interrupter
- voltage
- conditioning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/668—Means for obtaining or monitoring the vacuum
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
- H01H2001/0205—Conditioning of the contact material through arcing during manufacturing, e.g. vacuum-depositing of layer on contact surface
Definitions
- the invention relates to a device for internal pressure measurement, voltage conditioning and current conditioning of vacuum interrupters and methods therefor using the device.
- the basic condition for the safe functioning of vacuum interrupters that is, interruption of the vacuum arc when switching off as well as sufficient internal dielectric strength of the switching path, is an internal pressure of approximately 10 "7 bar or less. This pressure may remain throughout the life of the vacuum interrupter For the quality assurance of vacuum interrupters it is therefore necessary to measure the internal pressure of vacuum interrupters in order to ensure a long service life and high quality of the vacuum interrupters.
- the measurement of the internal pressure of vacuum interrupters is usually carried out according to the magnetron principle, as described, for example, in CALOREMAG communications, issue 1/1983, pages 19 to 21 in the essay "Measurement of the internal pressure of vacuum interrupters” by Siegbert Berger Siemens-Zeitschrift 51 (1977) No. 5, page 427 to page 430 "Measuring device for determining the internal pressure of vacuum interrupters” by Wilfriedde and Klemens Wiehl.
- the magnetron process is based on the ionization of residual gas molecules the cold cathode measuring principle (also known as Penning principle): when a DC high voltage of a few kV is applied, the electrons that are always present in the vacuum container are accelerated towards the anode, mainly due to field emissions and cosmic radiation, where they ionize further residual gas molecules through collision processes. Since the mean free path of an electron in a high vacuum is a few meters, the probability of collision is increased accordingly by connecting a DC magnetic field that forces the electrodes on spiral tracks. At the pressures typical for vacuum interrupters (10 ⁇ 7 - 10 "4 mbar), the ion flow generated in this way is approximately proportional to the residual gas pressure.
- the cold cathode measuring principle also known as Penning principle
- the property of the vacuum arcs of type A that the cathode base points move stochastically at high speed on the entire contact surface, is specifically used in current conditioning; Due to the high current density with a very small base area, microscopic melting and evaporation occur on the cathode surface. If a DC arc is left burning in the vacuum interrupter for a defined time, this results in a more even distribution of the contact structure, furthermore cleaning of the immediate contact surface and the area close to the surface of any impurities. processing-related inhomogeneities such as turning grooves smoothed. By repeating the conditioning process after reversing the polarity, both contacts are loaded equally. Despite very careful pretreatment of all components of a vacuum interrupter, they do not have a uniform and always a defined, desired dielectric strength. To increase the
- the invention is based on the object of making the carrying out of the measurement methods and conditioning methods for quality assurance of vacuum interrupters and vacuum interrupters more economical and more economical.
- a device which is constructed as a combination system and with which both an internal pressure measurement and a current conditioning and voltage conditioning of vacuum interrupters (vacuum interrupters) can be carried out.
- the invention is characterized by a device for internal pressure measurement, voltage conditioning and current conditioning of vacuum interrupters, comprising a coil for generating magnetic fields for internal pressure measurement, a high current transformer which supplies the coil current for building up the magnetic field and the DC current for current conditioning, a high voltage generator , which provides the DC high voltage required for the internal pressure measurement on the one hand and a variable AC high voltage for the voltage conditioning on the other hand, a mounting device for the vacuum interrupter, which has a locking device for the contact base of the vacuum interrupter on one side and a locking device on the opposite side Has clamping and fixing device for the vacuum interrupter, wherein the clamping and fixing device with a linear drive device for moving the vacuum interrupter in positions for producing defined distances between ischen the contacts of the vacuum interrupter for voltage conditioning, current conditioning or internal pressure measurement and connected to a removal position, and wherein the locking device is equipped with a pneumatic drive for rapid expansion of the contacts from the closed position to a defined distance to ignite a DC arc for current conditioning is.
- the system according to the invention is a combination device in which the individual device components for multiple Other procedures can be used.
- the realization of the voltage conditioning, the internal pressure measurement and the current conditioning in one device also enables, in a further development according to the invention, an automated sequence of all process steps, starting from the individual component recognition, through the process control to the evaluation and logging of the measurement results for the individual test objects.
- the invention is characterized in particular by the combination of all three functions in a single apparatus: a single high-current transformer supplies the coil current for the magnetic field of the internal pressure test on the one hand, and the DC current for the current conditioning on the other; A special high-voltage generator firstly supplies the DC high voltage for the internal pressure test, secondly a variable AC high voltage for the (breakdown) conditioning and for the final dielectric strength test of the vacuum interrupters.
- the individual devices and components of the device according to the invention are explained in more detail below.
- the high voltage generator an alternating voltage of 0 - 30 kV and a direct voltage of 0 - 20 kV can be generated. It can be used for voltage conditioning as well as for internal pressure measurement.
- the high-voltage generator essentially consists of a control and monitoring unit, an electronically regulated high-voltage power supply, with which the direct voltage can be set, and an adjustable alternating voltage source.
- the DC voltage initiates the internal pressure measurement when the magnetic field is applied to the coil.
- the alternating voltage is a variable transformer operated via a high-voltage transformer with an upstream motor adjustable and is used for voltage conditioning.
- the high-voltage generator can be equipped with a microprocessor-controlled operating and display unit that shows the test parameters on a display. All functions of the high-voltage generator can also be controlled via an isolated optical interface - optical interface. Commands and messages are transmitted via fiber optics between the high-voltage generator and the computer (PC) control unit that controls the high-voltage generator.
- PC computer
- the high current transformer used in the device according to the invention has two tasks. The first is to supply the coil for generating the magnetic field for the internal pressure measurement with direct current, so as to generate a homogeneous magnetic field within the vacuum tube. The second task is to provide DC power for power conditioning.
- a transformer in the form of a three-phase thyristor-controlled rectifier is used as the high-current transformer.
- a direct current of low residual ripple is obtained by means of a six-pulse rectification and a smoothing choke.
- the high current transformer should be able to generate an adjustable direct current in the range up to 600 A.
- a smoothing capacitor can be connected in parallel to the coil in order to smooth the remaining ripple of the direct current.
- the high-current transformer is additionally equipped with an interface to the programmable logic controller (PLC).
- PLC programmable logic controller
- the high-current transformer can be controlled externally via the interface and its messages can be processed in the PLC.
- the interface shows signals for on and off of the direct current circuit, signals vacuum umbogen burns or does not burn, signals for the setpoint of the direct current, signals for the actual value of the direct current, signals for the presence of a short circuit when the contacts of the vacuum interrupter are closed when the direct current is switched on.
- the magnetic field required for internal pressure measurement is generated by means of a high-current coil, which is equipped with a cooling system.
- the coil is preferably cooled by means of water which flows through the hollow conductor of the coil and is provided at a sufficient pressure by means of a high-pressure coolant pump.
- the flow rate achieved as a result of the pressure for example at a pressure of 50 bar, is necessary since the magnetic field required for measuring the internal pressure can only be achieved by large currents of several 100 A, which in turn cause the coil to heat up considerably.
- the cooling system of the magnetic coil is also monitored, for example by means of a flow meter and a temperature sensor. These measurement data are also fed to the programmable logic controller and processed in it and used for controlling the flow, in particular via the coolant pump.
- a high-voltage generator is provided for realizing the voltage conditioning with the device according to the invention, with which the generation of a sufficiently high voltage of up to 30 kV (AC) is possible.
- the high-voltage generator used for the device is capable of generating both direct and alternating voltage.
- the alternating voltage is used in order to achieve a uniform conditioning of both contact surfaces of the vacuum interrupter.
- a linear drive is provided in the device.
- the vacuum interrupter To be able to move the linear drive, it must be clamped in a specially designed holding device. This holding device can then be connected to the linear drive and thus enables opening and closing movements of the vacuum switching contacts. So that the contacts in the vacuum interrupter are pulled apart or moved together, it is necessary to clamp the vacuum interrupter on both sides and additionally lock it in the holding device on one side. This locking takes place, for example, by means of a pneumatic device. If the linear drive for the vacuum interrupter is now set in motion, the two switching contacts are moved relative to one another. The
- Linear drive enables a defined distance to be established between the contact pieces of the vacuum interrupter clamped in the device.
- different distances between the contacts are required and, depending on the contact opening point found, set with the help of the linear drive.
- the clamped vacuum interrupter is moved between the test position and the removal position by means of the linear drive.
- the linear drive is controlled in an automatic mode using the programmable logic controller (PLC) or in manual mode using a handwheel or the corresponding function keys on an operator terminal.
- PLC programmable logic controller
- the linear drive only develops a relatively low movement speed, on the other hand it enables the drive to be accurate to 1/100 mm.
- the drive itself comprises a DC motor, a servo amplifier, a position controller and a position control.
- the DC motor is controlled in automatic mode by the PLC.
- the rotary movement of the motor of the drive is converted into a linear movement with the help of a linear axis, which makes it possible to change the position of the test object - vacuum interrupter.
- the linear axis preferably consists of two spindles which are connected to one another by a cover plate, as a result of which these parts are synchronized and high power transmission is ensured.
- the spindle drive and the drive motor are over, for example a toothed belt connected to each other, which allows slip-free operation for precise position control.
- the linear drive has an upper and lower mechanical stop, one stop serving as a reference point for the drive. In between are the removal position for the tube change and the test positions, whereby the defined contact distances - contact strokes - are controlled via the PLC.
- the holder for the vacuum interrupter is designed as a test specimen, in order not only to enable the vacuum interrupter to be moved into a test position, but also to provide the different states of the switching contacts or their required for the various methods Create distance from each other.
- the vacuum interrupter is fixed on one side with a clamping and fixing device, which has a pneumatically operating cylinder for clamping the vacuum interrupter, which is controlled via the PLC.
- a locking device for the tube base - i.e. the contact base - the vacuum interrupter is provided, which is preferably designed as a rotary stroke cylinder and on the one hand serves to lock the vacuum interrupter and on the other hand enables a quick contact stroke to ignite a vacuum arc by separating the contacts.
- the rotary stroke cylinder can therefore perform both a linear movement parallel to the axis of movement of the contacts of the vacuum interrupter and a rotary movement.
- the rotary stroke cylinder is equipped with a toggle or the like attached to the piston and perpendicular to the linear axis of movement, which locks the mechanism attached to the contact base point of the vacuum interrupter.
- a pneumatic cylinder is provided as a compensating cylinder, which has the task of compensating for the weight of the mechanism clamped at the contact base point of the vacuum interrupter, the force emanating from it and extending in the direction of the axis of movement of the contacts but is less than the force emanating from the linear drive, which enables a play-free linear movement of sufficient mechanical drive pressure.
- a particularly precise distance control of the contacts and the setting thereof can be achieved with the aid of the linear drive.
- a pneumatically operated isolator is provided, which is opened during the voltage conditioning and the internal pressure measurement so that the high voltage does not overturn on the high-current circuit.
- the isolator on the other hand, is closed during current conditioning in order to safely conduct the high conditioning current to the contact of the vacuum interrupter.
- the acquisition and preparation of the measurement values for the ion current flowing through the vacuum interrupter and the applied high voltage is provided by means of a measurement value acquisition and evaluation system.
- the acquisition and preparation of the measurement data takes place with the aid of measurement amplifiers, the signals which are preferably output in the form of light signals by the measurement amplifiers are converted into digital voltage signals in a transient recorder, in order then to be processed in the PC control unit.
- the PC can also be equipped with software for archiving the data so that all measurement data of each test object, i.e. each vacuum interrupter can not only be recorded but also saved. If the test objects are equipped with a recognition code for individual component recognition, the data of the current and voltage curve that occurred during the internal pressure measurement can also be viewed and evaluated again at a later point in time.
- FIG. 1 the structure of a device according to the invention in a schematic
- Figure 2 a tabular representation of the essential switching states and thus also the basic circuit diagrams for realizing the three basic functions of internal pressure measurement, voltage conditioning and
- the test object a vacuum interrupter 1
- the locking device for the contact base point of the vacuum interrupter 1 is formed by a rotary stroke cylinder 5, 5A, the pneumatic cylinder 5 of which can be moved in the direction of the arrow P1, P2.
- 5A toggle are attached to the piston, which by a
- a clamping and fixing device for the vacuum interrupter 1 inserted into the test position is provided, which is designed in the form of a pneumatic cylinder 7.
- the clamping and fixing device 7 is connected to the linear drive 2, 3, 2 the linear axis and 3 the drive module to the
- the DC motor includes.
- the coil 4 is fed by the high-current transformer 13 and is further connected to a coolant pump 12 for cooling water.
- the high voltage generator is designated 1 1.
- the changeover switch S3 is used to switch on the coil current for the internal pressure measurement.
- the measuring amplifier 9 serves to record the voltage applied during the internal pressure measurement.
- the measuring amplifier 8 for recording the internal pressure current signal is switched on via the switch S1.
- the switch S2 serves to switch on the condition current during current conditioning and voltage conditioning.
- the cooling device for the vacuum interrupter during current conditioning is schematically indicated in the form of compressed air nozzles 10.
- the isolator T which can be actuated by means of a pneumatic cylinder 6 to separate the high-current circuit from the high-voltage circuit, and a safety earthing switch S4 are provided.
- the measurement amplifiers are connected to a measurement data acquisition and evaluation device 14 with a PC control unit, which also detects the voltage from the high-voltage generator 11.
- the internal pressure measurement, voltage conditioning and current conditioning of a vacuum interrupter with the aid of the device according to the invention in accordance with the basic structure shown in FIG. 1 takes place in sub-processes one after the other.
- the sequence of these sub-processes with regard to the switching states of the switches S1, S2, S3, S4 and the isolator T according to the basic circuit diagram according to FIG. 1 are listed in the attached table in FIG. 2.
- the clamped vacuum interrupter With the help of the linear drive, the clamped vacuum interrupter is moved between the test positions and the removal position, in the direction of arrow P. The movement to disconnect the contacts for the test - current conditioning - takes place, however, by means of the pneumatic device 5, 5A.
- the linear drive is used for this.
- the contacts can only be pulled apart if the vacuum interrupter is locked on one side. If the linear actuator is set in motion, it pulls a contact piece with it depending on the installation position of the vacuum interrupter.
- the contact distance is first set with the linear drive. Then the high voltage, which is connected to the upper bracket of the switching tube, is switched on.
- the contact opening point is found by moving the linear drive and then the linear drive is moved to the contact stroke II assigned to the voltage conditioning, ie the desired defined contact distance is reached, then the pneumatic isolator T is opened, the contact base of the vacuum interrupter and the isolator are grounded, then the instruction via the PC "voltage ON for voltage conditioning" and after completion the high-voltage release is withdrawn, the earthing of the isolator and the contact base of the vacuum interrupter is removed and the linear drive is moved into a waiting position for the execution of a further sub-process.
- the internal pressure measurement is carried out with the device according to the invention using the Penning or magnetron method.
- the basic requirement for this is a DC voltage source for generating an electrical high-voltage field and a magnetic field.
- the DC voltage is provided by the high voltage generator 11 which is connected to the upper part of the holder H from the vacuum interrupter.
- the magnetic field is generated by the water-cooled coil 4 through which a direct current flows.
- the ignition of a discharge current within the vacuum interrupter 1 requires that the contacts have to be brought back through the defined contact stroke I so that the electrical and magnetic field lines between the upper contact and the metal vapor shield of the vacuum interrupter are partially perpendicular to each other.
- the distance is set with the linear drive as explained above.
- the internal pressure measurement of the vacuum interrupter is carried out by first setting the desired contact distance, for example 2 mm. Then the magnetic field and finally the high voltage is switched on. The charge current ignited is measured. The following treatment steps for the internal pressure measurement are thus carried out.
- the linear drive is moved to reach and find the contact opening point and then the linear drive is moved to the desired set contact stroke I and is reset after the position has been reached, as a result of which the two contacts of the vacuum interrupter reach a defined distance are open.
- the disconnector T is then opened and grounded for safety reasons, as is the fixed contact base of the vacuum interrupter, so that the entire voltage drops across the opened contacts during voltage preconditioning. Then the high voltage is released and the PC is instructed to carry out the voltage preconditioning.
- the voltage preconditioning prevents breakdowns that affect the internal pressure measurement signal when the DC high voltage is suddenly switched on. After their termination, the release of the high voltage and the grounding of the contact base and the isolator are withdrawn and the measuring amplifier is now switched in to record the internal pressure current signal. At the same time, the coolant pump 12 is switched on, so that the high-current coil 4 is flowed through by cooling water. Then the galvanic connection between coil 4 and the high-current transformer 13 is established and the mains supply is switched on and then the transformer current is switched on.
- the current flow of the transformer 13 is then interrupted and the release of the high voltage and the earthing of the isolator are canceled, the control of the mains contactor of the transformer and then the galvanic connection between the coil and the transformer is disconnected, after which the measuring amplifier is disconnected. the coolant pump is switched off. Finally, the linear drive is set in motion again and the vacuum interrupter is placed in a waiting position or removal position. For the sub-process of current conditioning, it is necessary to ignite a vacuum arc that conditions the contact surfaces. This direct current arc can be ignited by switching on a current when the contacts of the vacuum interrupter are closed. By separating the contacts to a desired defined distance - contact stroke III - the direct current arc is created, which can also split into several partial arcs depending on the current intensity.
- the speed at which the contacts are pulled apart plays an important role in separating the contact path. If the contacts are separated from one another too slowly, welding can occur due to the very strong heating of the contact surfaces. Around To avoid this, a sufficiently fast drive must be available to pull the contacts apart at a defined distance of, for example, 2.5 mm. The electromotive linear drive is not suitable for this task. His speed of movement is too slow.
- a pneumatic device is therefore used to separate the contacts, with which the previously defined contact distance - contact stroke III - can be set in the form of preferably the rotary stroke cylinder 5, 5A. Before the pneumatic device 5, 5A is used, the vacuum interrupter must be locked as described above.
- the pneumatic locking device 5, 5A When the pneumatic locking device 5, 5A is actuated, the one contact is jerkily pulled to the contact distance set by means of the linear drive, and the direct current arc can thus be ignited.
- the contacts are opened for the purpose of igniting the DC arc when the contact point of the vacuum interrupter is locked. As already described, these are locked by means of the toggle 5A of the rotary lifting cylinder.
- the rotary stroke cylinder 5 is then moved upwards parallel to the axis of movement of the contacts, as a result of which the contacts close. Then the arc ignition current is switched on and the rotary stroke cylinders are suddenly lowered again, whereupon a vacuum arc is created and the defined contact opening distance - contact distance - is restored.
- the end positions of the rotary stroke cylinder can be monitored, for example, by means of magnetic switches. Through this process, the current conditioning takes place only one of the two contacts. The other contact is then conditioned in the same way after reversing the polarity of the power supply.
- the individual steps, switching operations for carrying out the sub-processes of voltage conditioning, internal pressure measurement or current conditioning can run automatically by means of a programmable logic controller PLC, the individual devices and switches are controlled accordingly. If a malfunction occurs, as well as if the
- the vacuum interrupter is also brought into a corresponding starting position by means of the linear drive.
- an actuator (not shown here) for generating and transmitting a mechanical shock pulse to the vacuum interrupter to be tested for igniting the discharge current, since the Penning discharge at internal pressures in the range • 10 " 7 mbar does not always ignite promptly, but it can be triggered by a shock pulse - initiated desorption of loosely bound residual gas molecules.
- the shock transmission can be done purely mechanically, eg via a ratchet / cam disk - but preferably electromechanically via switch armature, protective drive or piezo stack actuator
- This mechanical pulse generator including a control can also be integrated into the programmable logic controller of the device for carrying out the three functional tests.
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19942971 | 1999-09-09 | ||
DE19942971A DE19942971A1 (de) | 1999-09-09 | 1999-09-09 | Vorrichtung zur Innendruckmessung, Spannungskonditionierung und Stromkonditionierung von Vakuumschaltröhren und Verfahren hierfür |
PCT/EP2000/007764 WO2001018834A1 (de) | 1999-09-09 | 2000-08-10 | Vorrichtung zur innendruckmessung, spannungskonditionierung und stromkonditionierung von vakuumschaltröhren und verfahren hierfür |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1212768A1 true EP1212768A1 (de) | 2002-06-12 |
EP1212768B1 EP1212768B1 (de) | 2003-10-22 |
Family
ID=7921268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00964008A Expired - Lifetime EP1212768B1 (de) | 1999-09-09 | 2000-08-10 | Vorrichtung zur innendruckmessung, spannungskonditionierung und stromkonditionierung von vakuumschaltröhren und verfahren hierfür |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1212768B1 (de) |
DE (2) | DE19942971A1 (de) |
WO (1) | WO2001018834A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016108245A1 (de) | 2016-05-03 | 2017-11-09 | Eaton Electrical Ip Gmbh & Co. Kg | Schaltvorrichtung zum Führen und Trennen von elektrischen Strömen |
DE102020204312B3 (de) * | 2020-04-02 | 2021-09-30 | Siemens Aktiengesellschaft | Verfahren zum zweistufigen Formieren von Kontakten einer Vakuumschaltvorrichtung und Vakuumschaltvorrichtung, konfiguriert das Verfahren auszuführen |
CN114089145B (zh) * | 2021-11-19 | 2023-06-09 | 西安西电电力系统有限公司 | 一种可移式多路晶闸管长期耐压试验设备及试验方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3575656A (en) * | 1968-08-30 | 1971-04-20 | Ite Imperial Corp | Method and apparatus for measuring pressure in vacuum interrupters |
DE3347176A1 (de) * | 1983-12-27 | 1985-07-04 | Siemens AG, 1000 Berlin und 8000 München | Vorrichtung zum messen des innendrucks eines betriebsmaessig eingebauten vakuumschalters |
DE3539748A1 (de) * | 1985-11-09 | 1987-05-21 | Sachsenwerk Ag | Pruefeinrichtung fuer vakuumschaltkammern |
DE4203757C2 (de) * | 1992-02-10 | 2002-08-01 | Abb Patent Gmbh | Verfahren zum Prüfen des Vakuums einer elektrischen Vakuumschaltkammer sowie Einrichtung zur Durchführung des Verfahrens |
DE19714655C2 (de) * | 1997-04-09 | 2002-10-17 | Abb Patent Gmbh | Verfahren und Vorrichtung zum Konditionieren einer Vakuumschaltkammer |
-
1999
- 1999-09-09 DE DE19942971A patent/DE19942971A1/de not_active Withdrawn
-
2000
- 2000-08-10 WO PCT/EP2000/007764 patent/WO2001018834A1/de active IP Right Grant
- 2000-08-10 EP EP00964008A patent/EP1212768B1/de not_active Expired - Lifetime
- 2000-08-10 DE DE50004191T patent/DE50004191D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0118834A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2001018834A1 (de) | 2001-03-15 |
EP1212768B1 (de) | 2003-10-22 |
DE19942971A1 (de) | 2001-03-15 |
DE50004191D1 (de) | 2003-11-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE112012000586T5 (de) | Mehrpol und Ladungsteilchen-Strahlvorrichtung mit demselben | |
DE69935668T2 (de) | Betätigung und Steuervorrichtung für elektrische Schaltanlage | |
DE2349352C3 (de) | Verfahren zum Betrieb eines Elektronenstrahlerzeugers | |
EP1573761B1 (de) | Verfahren und vorrichtung zur bestimmung der restlebensdauer eines schaltgerätes | |
DE102004002173A1 (de) | Verfahren zur Untersuchung eines Leistungsschalters | |
EP1573760A1 (de) | Verfahren zur bestimmung der restlebensdauer eines schaltgerätes und zugehörige anordnung | |
EP1212768B1 (de) | Vorrichtung zur innendruckmessung, spannungskonditionierung und stromkonditionierung von vakuumschaltröhren und verfahren hierfür | |
EP0150389A1 (de) | Vorrichtung zum Messen des Innendrucks eines betriebsmässig eingebauten Vakuumschalters | |
DE10144256B4 (de) | Kurzzeit-Lichtbogenschweißsystem und -verfahren | |
EP0472938A2 (de) | Anordnung zum Testen und Reparieren einer integrierten Schaltung | |
DE2627862A1 (de) | Elektronenstrahler | |
EP1327254A1 (de) | Verfahren und vorrichtung zur reduzierung des kontaktabbrandes eines schaltgerätes | |
DE102017211725B4 (de) | Verfahren zur Herstellung einer Schweißverbindung | |
DE862205C (de) | Anordnung zur Speisung von Geraeten mit einem gebuendelten Elektronenstrahl, insbesondere von Elektronenmikroskopen | |
EP2645401A2 (de) | Verfahren zur Einstellung einer Position eines Trägerelements in einem Teilchenstrahlgerät | |
DE2434830B2 (de) | Elektronenstrahlanlage zur thermischen Bearbeitung von Metallwerkstttcken | |
DE2532126C2 (de) | Verfahren zum Prüfen des Einschaltvermögens von Schaltgeräten | |
DE1903498B1 (de) | Verfahren und Anordnung zur Justierung des Elektronenstrahlbuendels in einem Elektronenmikroskop | |
DE4443184C1 (de) | Hochspannungsschalteinrichtung | |
DE4203757C2 (de) | Verfahren zum Prüfen des Vakuums einer elektrischen Vakuumschaltkammer sowie Einrichtung zur Durchführung des Verfahrens | |
DE2323350C2 (de) | Druckgasschalter mit geschlossenem Löschkammersystem | |
EP3561846A1 (de) | Vakuum-leistungsschalter | |
DE69923889T2 (de) | Vakuumqualitätsprüfeinrichtung und Verfahren für Vakuumschaltkammern | |
DE3923789C2 (de) | ||
DE975409C (de) | Einrichtung zur Zuendung eines Lichtbogens bei Schweissautomaten mit einer durch einen Elektromotor selbsttaetig verschiebbaren Abschmelzelektrode |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20020213 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE FR IT LI SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20031022 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
REF | Corresponds to: |
Ref document number: 50004191 Country of ref document: DE Date of ref document: 20031127 Kind code of ref document: P |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040122 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040831 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040831 |
|
26N | No opposition filed |
Effective date: 20040723 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20050812 Year of fee payment: 6 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20070430 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060831 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20080822 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100302 |