The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper deals with experimental characterization of creepage discharge to improve the electrical characteristics of oil/pressboard (PB) composite insulation system by thin solid layer coating such as epoxy resin and Teflon on PB surface under positive standard impulse voltage (1.2/50 µs) using a rod-plane electrode arrangement in mineral oil. To evaluate the creepage discharge properties according...
Vacuum interrupter (VI) is an alternative device that contributes to reduce usage of SF6 gas insulated apparatus in the future. For the past research, we have investigated the partial discharge (PD) phenomena and determined the gas pressure in VI based on PD patterns from 1 Pa to kPa order. We revealed that the pressure below and above 260 Pa were attributed to Townsend and Streamer-like discharge,...
There is a possibility of partial discharge (PD) occurrence due to an abnormality of the insulation and the aging of the vacuum circuit breaker (VCB) in cubicle-type gas insulated switchgear (C-GIS). PD may contribute to a risk that leads to breakdown in the worst case, and cause failure of the equipment. Thus, knowing the characteristics of the PD internal VCB is required. In this work, a development...
Partial discharge (PD) endurance test was performed on twisted pair specimens of enameled wires consisting of polyamide-imide resin with nanometer-size fillers. Specimens were prepared with containing nanometer-scale silica or titania fillers, as well as specimens without fillers. In the PD endurance test, so-called V-t characteristics of the twisted pair specimen were measured by applying a constant...
The aim of this study is to investigate the influence of temperature on the mechanical and insulation properties of a newly developed epoxy-layered silicate nanocomposite. This nanocomposite has a higher thermal resistance with respect to mechanical properties than a base epoxy resin (epoxy resin without fillers). The volume resistivity of the nanocomposite gradually decreases with increasing temperature,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.