3results about How to "Improve electrical insulation strength" patented technology

The invention discloses a transformer comprehensive loss measurement system and method based on SF6 gas insulation and multi-range integration, and the system comprises a three-phase independent high-voltage measurement unit, a data collection unit, an AD conversion module, a signal preprocessing unit, a calculation module, a data caching unit, a communication interface, a data uploading and display unit, and a control host. The method comprises the following steps: firstly, collecting signals, then carrying out AD conversion, then carrying out harmonic filtering, and then carrying out a calculation process; then storing the data; and then the stored data is transmitted to the control host, and then real-time waveform display and report output are performed, so that the contradiction between wide range and high precision is fundamentally solved, field interference and overvoltage impact can be effectively resisted, and the test efficiency and the automation level are greatly improved. And the safety risk caused by manual operation in a high-voltage area is avoided.

This utility model discloses a vacuum interrupter, including a shell. An end cap is fixedly connected to the top of the shell, and a moving contact assembly is movably connected to the surface of the end cap. A stationary contact assembly is installed at the bottom of the shell, opposite to the moving contact assembly, and the stationary contact assembly is in movable contact with the moving contact assembly. A shielding cylinder is installed on the inner wall of the shell at the position opposite to the movable contact connection of the stationary contact assembly and the moving contact assembly. The shielding cylinder includes a first connecting cylinder, a second connecting cylinder, and a shielding block. The shielding block is fixedly connected between the first connecting cylinder and the second connecting cylinder. Creepage grooves are uniformly formed on the inner wall surface of the shielding block. This utility model, through an innovative composite shielding cylinder structure with creepage grooves, effectively solves the problem of poor shielding effect under high current leading to insulation degradation of the inner wall of the shell in the prior art. It effectively improves the electrical insulation strength, anti-pollution ability, and breaking reliability of the vacuum interrupter, and has the advantages of practical structure and significant effect.

This utility model relates to fuses, specifically a sulfur hexafluoride (SF6) fuse; it includes a metallized fuse tube and a fusible element located inside it, characterized in that: both ends of the fusible element are connected to the two end faces of the metallized fuse tube; sealing gaskets are provided on both end faces of the metallized fuse tube, forming a sealed cavity between the two sealing gaskets and the metallized fuse tube; the sealed cavity is filled with SF6 gas as an arc-extinguishing medium; connecting terminals are sleeved on both ends of the metallized fuse tube, and the connecting terminals are electrically connected to the sealing gaskets. Compared with existing fuses, this fuse is lighter, occupies less space, the filling process is easier to quantify, and its structure is simpler, which helps to achieve automated production.