4results about How to "Reliable cut off" patented technology

The present application aims to provide a cutting device, a component mounting system, and a tape cutting method that can efficiently and reliably cut a tape. The cutting device (60) is a cutting device that cuts a tape (163) peeled from a carrier tape (162) that accommodates components. The cutting device (60) includes a clamping portion (61) that is switched between a clamped state in which at least one tape (163) is clamped and a separated state in which the tape (163) is separated, and a cutting portion (62) that cuts the tape (163) while sliding in a width direction of the tape (163). The cutting portion (62) cuts the tape (163) in a state clamped by the clamping portion (61) by causing the clamping portion (61) to become the clamped state in conjunction with the sliding.

The invention discloses a direct current arc discharge detection method and device of an energy storage system. The direct current arc discharge detection method of the energy storage system comprises the following steps: collecting a bus current signal and a bus voltage signal of the energy storage system; carrying out adaptive wavelet noise reduction and feature extraction on the collected bus current signal to obtain a current feature signal; performing harmonic resonance analysis and feature extraction on the acquired bus voltage signal to obtain a voltage feature signal; inputting the extracted current characteristic signal and the voltage characteristic signal into a WCNN model, and outputting an arc discharge probability value; and when the arc discharge probability value meets a set protection condition, it is confirmed that a direct current arc discharge fault occurs, and the direct current arc discharge fault is used for triggering opening protection. According to the invention, the accuracy and reliability of direct current arc discharge detection are significantly improved.

The application belongs to the technical field of fuses, in particular to an outdoor high-voltage current-limiting fuse, comprising an epoxy tube; the upper and lower ends of the epoxy tube are respectively sleeved with an upper locking ring and a lower locking ring, a static contact is arranged on the upper locking ring, the static contact is installed below an anti-icing cover through bolts, and a first spring is installed on the static contact; in the application, a striker is independently arranged in a support column, a trigger branch and a main fuse passage are separated in structure, assembly complexity and interference risk in operation caused by passing of a constantan wire through a hole in the support column in traditional design are avoided; meanwhile, a connecting cavity and a plug-in connector structure are arranged in a connecting piece at the lower end, and a connecting wire in a rotating seat is matched, stable electrical leading-out is realized, and through a rotatable connecting frame design, the fuse is allowed to flexibly adjust an installation angle according to the direction of incoming and outgoing lines on site, and construction and maintenance in a complex outdoor environment are greatly facilitated.

The utility model provides a loop structure for preventing inverse power transmission of an inverter power supply module, belongs to the technical field of inverter power supply modules, and solves the problem of potential safety hazards of inverse power transmission in an application scene of an ultrasonic current measuring device of a hydroelectric generating set. Wherein the inverter power supply module is respectively connected with the alternating current power supply loop and the direct current power supply loop, a first power supply isolation contactor is arranged between the alternating current power supply loop and the inverter power supply module, and a second power supply isolation contactor is arranged between the direct current power supply loop and the inverter power supply module; the first power supply isolation contactor is provided with a first normally open contact which is located between a subordinate alternating current normally open auxiliary contact of the alternating current power supply loop and the inverter power supply module; the second power supply isolation contactor is provided with a second normally open contact which is positioned between a lower-stage direct-current normally open auxiliary contact of the direct-current power supply loop and the inverter power supply module; according to the utility model, the complete isolation effect of the corresponding input end of the inverter power supply module can be realized based on the normally open contact, and reverse power transmission safety accidents are avoided.