11results about "Contact testing/inspection" patented technology

The invention relates to a method for checking the condition of a vacuum interrupter unit (1) comprising: - Detection of X-ray radiation (9) emitted by the vacuum interrupter unit (1), - Generating an image (12) of at least one radiation source (R1, R2, R3, R11, R12, R13) of the vacuum interrupter unit (1) on a projection plane based on the detected X-ray radiation (9), wherein at least one radiation source is represented by at least one image point (B1, B2, B3, B11, B12, B13) in the image (12), - Capturing an X-ray spectrum (19, 20, 21, 22, 23) of the X-ray radiation (9) in which at least one pixel (B1, B2, B3, B11, B12, B13), and - Checking the condition of the vacuum interrupter unit (1) based on the captured X-ray spectrum (19, 20, 21, 22, 23). Furthermore, the invention relates to a testing device (7) and a test system (8).

The invention relates to a method for determining the thermal endurance (LD(T)) of an electromechanical switch device (10), having the following steps: - detecting a temperature measurement value (T_m) at a measurement point (P) of the switch device (10); - in the event that the temperature measurement value (T_m) is less than or equal to a defined permissible temperature (T_zul) of the switch device (10), ascertaining the thermal endurance (LD) as the defined maximum endurance (LD_max) of the switch device (10) and reducing the endurance (LD) in accordance with the time that has elapsed; - in the event that the temperature measurement value (T_m) is greater than the permissible temperature (T_zul) and less than or equal to a defined maximally permissible temperature (T_max) of the switch device (10), said maximally permissible temperature being greater than the permissible temperature (T_zul), ascertaining the thermal endurance (LD) using a temperature-time characteristic curve (Ki, Si); and - in the event that the temperature measurement value (T_m) is greater than the maximally permissible temperature (T_max) of the switch device (10), ascertaining the thermal endurance (LD) according to a rule defined for this event.

The present invention discloses a contactor detection circuit. The contactor detection circuit comprises: a comparator; a reference voltage generation circuit, whose output end is connected to the inverting input end of the comparator, for inputting a reference voltage V1 to the inverting input end of the comparator; a sampling circuit electrically connected to two static contacts of a contactor and its output end connected to the in-phase input end of the comparator, for inputting a sampling voltage V2 to the in-phase input end of the comparator; and a waveform generator, whose output end is connected to the input end of the sampling circuit, is used to input a periodically changing voltage signal V3 to the sampling circuit. When the contactor is in an open state, the sampling voltage V2 output by the sampling circuit is a periodic waveform, causing the comparator to output a periodic square wave signal; when the contactor is in a closed state, the sampling voltage V2 output by the sampling circuit is higher than the reference voltage V1, causing the comparator to output a high level. The present invention does not require the use of isolated power supplies and isolated operational amplifiers, nor does it require the use of MCUs or the development of specialized software, greatly reducing costs.

The invention relates to a method for determining the thermal endurance (LD(T)) of an electromechanical switch device (10) which is inserted into a load current path (14), having the following steps: - detecting a time series of temperature measurement values (Tm) which are recorded at a temperature measurement point (P) of the switch device (10); - forming a time series of calculated values which are calculated on the basis of the detected time series of temperature measurement values (Tm); - ascertaining a trend in the formed time series of calculated value; and - estimating the thermal endurance of the switch device (10) on the basis of the ascertained trend.

Relay (1), comprising: a first established contact (11); a second fixed contact (12); a movable contact part (7) having a first movable contact (13) facing the first fixed contact (11) and a second movable contact (14) facing the second fixed contact (12), wherein the movable contact part (7) is arranged such that it is movable in a contact direction in which the first movable contact (13) and the second movable contact (14) come into contact with the first fixed contact (11) and the second fixed contact (12) and in a separation direction in which the first movable contact (13) and the second movable contact (14) are separated from the first fixed contact (11) and the second fixed contact (12); a drive device (4) which is arranged in the direction of contact with respect to the movable contact part (7) and is configured to generate a drive force for moving the movable contact part (7); a drive shaft (15) extending in a direction of movement of the movable contact part (7) and having an end section (15c) that protrudes in the separation direction from the movable contact part (7) and is configured to transmit the driving force to the movable contact part (7), and a first housing (2c) designed to accommodate the first fixed contact (11), the second fixed contact (12) and the movable contact part (7), wherein the first housing (2c) has a test hole (61) which is arranged in a position facing an end section of the drive shaft (15) in the separation direction and passes through the first housing (2c).

The invention relates to a method for checking the state of a vacuum interrupter unit (1), having the steps of: - detecting X-ray radiation (8) emitted by the vacuum interrupter unit (1), - generating an image (11) of at least one radiation source (R1, R2, R3) in and / or on the vacuum interrupter unit (1) on the basis of the detected X-ray radiation (8), the X-ray radiation (8) being emitted from the at least one radiation source (R1, R2, R3), - determining at least one piece of information about the at least one radiation source (R1, R2, R3) on the basis of the generated image (11), and - checking the state of the vacuum interrupter unit (1) on the basis of the at least one piece of determined information about the at least one radiation source (R1, R2, R3). The invention also relates to a test device (6) and a test system (7).

A vehicle charging system (10) for an electric vehicle (14), comprising: a housing (102) with an engagement end for joining with a charging component (40) for the electric vehicle, wherein the housing has an inner recess (134); a charging port (107) which is held by the housing in the inner recess, the charging port having an engagement end (210) for engaging with the charging component, the charging port being connected to a current conductor (105) to form a current transmission line; and a charging control unit (140) for controlling vehicle charging along the power transmission line, wherein the charging control unit has a charging sensor assembly (146) coupled to the charging control unit, wherein the charging sensor assembly monitors the charging status of the vehicle charging system along the power transmission line and generates a charging output signal, wherein the charging sensor assembly transmits the charging output signal to the charging control unit, wherein the charging sensor assembly is configured to detect an arc signature from an arc event and generate an arc output signal to the charging control unit; wherein, based on the arc output signal associated with the arc event, the charging control unit generates an initial control output to perform an initial protective action, including shutting down the charging process; and where, based on the arc output signal associated with the arc event, the charging control unit generates a second control output to implement a second protective measure.

An on-load tap changer is disclosed. It includes an actuator configured to adjust a turn ratio of the transformer, and a processing unit configured to control the actuator and to communicate with a control device via a digital signal connection. The processing unit is further configured to receive a status detected by a sensor. A method of manufacturing the on-load tap changer is also disclosed. The embodiments according to the present disclosure provide a digitalized on-load tap changer that allows various statuses to be monitored or controlled, by which various advantages can be achieved. For example, the life of a contact of the transformer can be predicted in addition. Other data can be used to determine whether it is safe to adjust the contact of the transformer. Moreover, the optical fibers between the on-load tap changer and an external device enable an isolated transmission of control and data signals that almost eliminates interferences.

The present invention relates to a diagnostic method (200) for a circuit breaker comprising at least one pole, each pole comprising an electrical contact configured to switch between a closed position and an open position. The method comprises: - for each pole of the circuit breaker, at least one image (208A, 208B) of the pole's electrical contact; - for each pole of the circuit breaker, at least one determination (218A, 218B) of a health state of the pole from among at least two states by means of an artificial intelligence algorithm, the artificial intelligence algorithm taking as input at least one image of the pole and providing as output the health state of the pole; - a determination (220A, 220B) of a health state of the circuit breaker from among at least two states, depending on the health state of each pole; and - a restitution (222, 224) of the health state of the circuit breaker.

The invention relates to a method for checking the state of a vacuum interrupter unit (1), having the steps of: - detecting X-ray radiation (9) emitted by the vacuum interrupter unit (1), - generating an image (12) of at least one radiation source (R1, R2, R3, R11, R12, R13) of the vacuum interrupter unit (1) on a projection plane on the basis of the detected X-ray radiation (9), at least one radiation source being represented by at least one image point (B1, B2, B3, B11, B12, B13) in the image (12), - detecting an X-ray spectrum (19, 20, 21, 22, 23) of the X-ray radiation (9) in the at least one image point (B1, B2, B3, B11, B12, B13), and - checking the state of the vacuum interrupter unit (1) on the basis of the detected X-ray spectrum (19, 20, 21, 22, 23). The invention also relates to a test device (7) and a test system (8).

The invention relates to a method for evaluating a switch event in an electromechanical switching device which is inserted in a load current path, said method comprising the following steps: - detecting temperature-current intensity value pairs (Tm, Im), having a temperature measurement value (Tm) of a temperature measured at a temperature measurement point (X) of the switching device (10) and a current intensity measurement value (Im) of a current (l) flowing through the load current path, which was measured simultaneously with the temperature measurement value (Tm); - recording said temperature-current intensity value pairs which were detected at different times; - comparing at least one temperature-current intensity value pair at a time before the switch event with at least one temperature-current intensity value pair at at least one time after the switch event; and - evaluating the switch event on the basis of the comparison.