HZSF-702 is suitable for all electrical equipment that uses SF6 gas as an insulation or arc-extinguishing medium. In power systems, such equipment covers nearly all core devices in substations of 110kV and above. The main application scenarios are summarized to help users determine whether their ins

In the insulation diagnosis of high-voltage electrical equipment, partial discharge detection is one of the most technically advanced and reflective test items of the internal insulation state. It measures not the breakdown of the entire insulation, but the tiny discharge that occurs in a local area

The power frequency withstand voltage test may appear to involve only three actions: "voltage rise, wait, and voltage drop," but the execution quality of each step significantly impacts safety and the reliability of the results. Taking the HZG series dry-type test transformer as an example

The selection of on-site verification instruments may seem straightforward, but focusing solely on one or two parameters could result in insufficient functionality or failure to meet the accuracy requirements for formal inspections. It's essential to identify the key dimensions that truly impact