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公开(公告)号：US20230187925A1
公开(公告)日：2023-06-15
申请号：US18075528
申请日：2022-12-06
发明人： Daniel Gonzalez
摘要： An electrical protection method for detecting an electrical fault in an electrical installation includes: measuring electrical variables by way of an auxiliary protection device, the electrical variables being associated with phase conductors; automatically analysing the measured electrical variables in order to identify a condition representative of a short circuit between phase conductors; detecting an electrical fault, such as a short circuit between the three electrical phases associated with the phase conductors without any neutral conductor involved, based on the measured electrical variables; triggering the opening of a switching device of the auxiliary protection device when an electrical fault is identified in order to disconnect one of the phase conductors, the switching device being connected to one of the phase conductors.
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公开(公告)号：US20230184849A1
公开(公告)日：2023-06-15
申请号：US18075546
申请日：2022-12-06
发明人： Daniel Gonzalez
摘要： A method for detecting an electrical fault in an electrical installation comprises steps of includes: measuring an alternating electric current flowing through the electrical installation; detecting an electrical fault on the basis of the measured electric current; and tripping the electrical protection device when an electrical fault is identified by the electronic control device. The detection of the fault includes identifying a transition of the measured current from a first level to a second level with a duration lower than a predefined threshold which is lower than or equal to 10% of the nominal period of the alternating electric current, the first level and the second level corresponding to current values of opposite sign but the amplitude of which, in terms of absolute value, is higher than a predefined current threshold equal to the product of the trip threshold of the protection device and a weighting coefficient.
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