Abstract: A glass stress test method includes breaking a glass, analyzing a shape of a crack of a broken portion of the glass in a plan view, finding a breakage origin of the glass based on the shape of the crack in the plan view, analyzing a cross-section of the breakage origin, and calculating a stress of the glass based on a cross-sectional analysis result of the breakage origin. The stress of the glass is calculated as a value proportional to a floor constant defined by a condition of a floor surface disposed when the glass is broken.

Abstract: Methods and systems for executing tracking and monitoring manufacturing data of a battery are disclosed. One method includes: receiving, by a server system, sensing data of the battery from a sensing system; generating, by the server system, mapping data based on the sensing data; generating, by the server system, identification data of the battery based on the sensing data; generating, by the server system, monitoring data of the battery based on the sensing data, the identification data, and the mapping data; and generating, by the server system, display data for displaying a simulated electrode of the battery on a graphical user interface based on the monitoring data of the battery.

Abstract: The present disclosure provides a contact point monitoring device for a vacuum circuit breaker comprising: a fixed electrode which is fixed in an insulated container; a fixed contact point which is disposed at one end of the fixed electrode; a movable electrode which is installed in the insulated container and is movable in the upward or downward direction; a vacuum interrupter which is disposed at one end of the movable electrode and includes a movable contact point coming into contact with or separated from the fixed contact point; and a pushrod assembly which is coupled to the other end of the movable electrode and allows the movable electrode to move upwards or downwards.

Abstract: The present disclosure relates to a power device monitoring system comprising: a cradle having a cradle terminal formed on the rear side thereof; a circuit breaker mechanically or electrically connected to or separated from the cradle terminal; at least one position detection means mounted inside the circuit breaker so as to detect the position of a circuit breaker body in real time; and a display unit for outputting the mobile characteristic of the circuit breaker body detected by the position detection means.

Abstract: The present disclosure relates to a power device for continuously detecting entry and exit positions. The power device comprises: a cradle having a cradle terminal formed therein; a breaker main body mechanically and electrically connected to or separated from the cradle terminal; and a girder and a truck which are transfer devices for moving the breaker main body to a connection or separation position, wherein the power device comprises: a position detection area portion formed on a side surface of the breaker main body; and a sensor module provided with a non-contact sensor which faces the position detection area portion and detects the position of the breaker main body by sensing a moving position of the position sensing area. portion, the sensor module being fixedly coupled to the inner surface of the cradle.

Abstract: The present disclosure provides a contact monitoring device for a vacuum circuit breaker. The contact monitoring device is provided in a vacuum circuit breaker comprising: a vacuum interrupter having a fixed electrode which is fixed in an insulating container and is provided with a fixed contact at one end, and a movable electrode which is installed in the insulating container to be able to be lifted or lowered wherein the vacuum interrupter is provided with a movable contact at one end, the movable contact contacting or being separated from the fixed contact when the movable electrode is lifted or lowered; and a push rod assembly which is coupled to the other end of the movable electrode and lifts or lowers the movable electrode. In addition, the present disclosure provides a vacuum circuit breaker having the contact monitoring device.

Abstract: The present disclosure provides a contact point monitoring device for a vacuum circuit breaker comprising: a fixed electrode which is fixed in an insulated container; a fixed contact point which is disposed at one end of the fixed electrode; a movable electrode which is installed in the insulated container and is movable in the upward or downward direction; a vacuum interrupter which is disposed at one end of the movable electrode and includes a movable contact point coming into contact with or separated from the fixed contact point; and a pushrod assembly which is coupled to the other end of the movable electrode and allows the movable electrode to move upwards or downwards.

Abstract: According to an aspect of the present invention, there is provided a movable contact assembly for a circuit breaker, which includes a fixed contact, a connector formed to protrude from one side of a terminal connected to a load or a power source, a plurality of movable contacts pivotably installed at the connector through a connector pin and configured to be contactable to or separable from the fixed contact, a side holder pivotably installed at the connector through the connector pin, a catch pivotably installed at the connector, supported on the side holder, and configured to restrict a rebound phenomenon of the plurality of movable contacts when current limiting interruption occurs, and a pressurizing protrusion formed at a lower portion of each of the plurality of movable contacts and configured to push the catch when the current limiting interruption occurs.

Abstract: The present invention relates to a tunneling method, and particularly, to a tunneling method by installing an internal pre-support member and a corresponding post support member in an alternate manner or by installing an external pre-support member and a corresponding post support member in an alternate manner, and an apparatus, respectively, therefor.

Abstract: According to an aspect of the present invention, there is provided a movable contact assembly for a circuit breaker, which includes a fixed contact, a connector formed to protrude from one side of a terminal connected to a load or a power source, a plurality of movable contacts pivotably installed at the connector through a connector pin and configured to be contactable to or separable from the fixed contact, a side holder pivotably installed at the connector through the connector pin, a catch pivotably installed at the connector, supported on the side holder, and configured to restrict a rebound phenomenon of the plurality of movable contacts when current limiting interruption occurs, and a pressurizing protrusion formed at a lower portion of each of the plurality of movable contacts and configured to push the catch when the current limiting interruption occurs.

Abstract: The present invention relates to a tunneling methods and, particularly to installing an internal or external pre-support member along with a post support member and an apparatus therefor. The tunneling method includes: excavating a pilot tunnel in a main tunnel to be built; radially forming a drilled hole from an excavation surface of the pilot tunnel to a tip end of an internal pre-support member of the main tunnel at locations in the pilot tunnel; inserting the internal pre-support member into the drilled hole, and conducting grouting and fixing the internal pre-support member; excavating the tunnel along an excavation line of the main tunnel and spraying shotcrete to an excavation surface of the main tunnel; installing a post-support member between internal pre-support members in the excavation surface of the main tunnel; and connecting the internal pre-support member and the post-support member with a plate type support member.

Abstract: The present invention relates to a main circuit part of a vacuum circuit breaker, and more particularly, to a main circuit part of a vacuum circuit breaker with a temperature sensor. The main circuit part of a vacuum circuit breaker with a self-powered temperature sensor assembly includes: a self-powered temperature sensor module; and a support bracket enclosing and supporting the self-powered temperature sensor module.

Abstract: The present invention relates to a safety shutter of a vacuum circuit breaker, and more particularly, to a safety shutter of a vacuum circuit breaker which is mounted on a cradle of a drawable type vacuum circuit breaker and opened or closed when a main body is retracted or pulled out to protect the safety of users from a charging part.

Abstract: The present invention relates to a safety shutter of a vacuum circuit breaker, and more particularly, to a safety shutter of a vacuum circuit breaker which is mounted on a cradle of a drawable type vacuum circuit breaker and opened or closed when a main body is retracted or pulled out to protect the safety of users from a charging part.

Abstract: The present invention relates to a main circuit part of a vacuum circuit breaker, and more particularly, to a main circuit part of a vacuum circuit breaker with a temperature sensor. The main circuit part of a vacuum circuit breaker with a self-powered temperature sensor assembly includes: a self-powered temperature sensor module; and a support bracket enclosing and supporting the self-powered temperature sensor module.