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.
In the current research work, systematic investigations on the influence of thermal transients on the Polarization and Depolarization Current (PDC) measurements are presented. The test object consisted in a laboratory made oil paper condenser. A series of experiments have been performed under controlled temperature conditions on an oil impregnated bushing model. The PDC currents along with the temperature...
Positive dc arc propagation on an ice surface was studied by high speed photography and simultaneous measurement of leakage current and voltage. All experiments were performed on a 120-cm long simplified physical model simulating real ice-covered insulators. Some features of the arc development pattern like minor and major arc collapses and the effects of arc propagation direction were examined. Previous...
In this article, the feasibility of using time- and frequency-domain dielectric spectroscopy measurements to monitor the condition of oil-impregnated paper (OIP) condenser bushings is discussed.
The electric field required for a stable propagation of a positive streamer along an ice surface was investigated by measuring the currents associated with the streamer discharge. The influence of the surface properties, namely the existence of water film on the ice surface and the surface contamination, has been analyzed. Results showed that in the presence of an ice surface, except in case of low...
High spatial and thermal resolution measurements of the surface temperature of an operating single-mode oxide-confined VCSEL are reported. We show that the beam waist scales with the focal length of the thermal lens.
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.