Results 71 to 80 of about 827 (204)

Diagnosis of High Voltage Insulators Made of Ceramic Using Spectrophotometry

Journal of Spectroscopy, 2016
The paper presents results of comparative analysis of optical signals emitted by partial discharges occurring on three types of high voltage insulators made of porcelain.
Paweł Frącz, Ireneusz Urbaniec, Tomasz Turba, Sławomir Krzewiński   +3 more
doaj   +1 more source

Research Status of Substation Vulnerability Under the Coupling Effect of Earthquake and Strong Wind

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
With the progressive advancement of China’s power industry toward higher voltage levels and larger capacity, substations have become critical infrastructures whose resilience to natural disasters requires urgent enhancement. In particular, under the coupled effects of multiple hazards such as earthquakes and strong winds, the optimization of substation
Yihua Gao, Hong Liu, Yijie Wang, Bo Wen, Jiajun Fu, Yi Shan   +5 more
wiley   +1 more source

Comparison of Eight Month Coastal Polluted Porcelain and Epoxy Resin Outdoor Insulators [PDF]

ITB Journal of Engineering Science, 2008
This study presents the experimental results of eight months naturally coastal polluted outdoor porcelain and epoxy resin insulators. The experiments were leakage current and applied high voltage measurements used a two-channel storage digital ...
Waluyo,, Ngapuli I. Sinisuka,, Parouli M. Pakpahan,, Suwarno &, Maman A. Djauhari   +4 more
doaj  

Etch–Bleach–Seal Technique in Managing Enamel Hypomineralization: A Case Report With Narrative Literature Review

Case Reports in Dentistry, Volume 2026, Issue 1, 2026.
Background Molar incisor hypomineralization (MIH) opacities significantly affect pediatric patients′ esthetics and psychosocial well‐being. This case is unique as it demonstrates the clinical efficacy of a modified etch–bleach–seal protocol, utilizing a double application of sodium hypochlorite to address deep pigmentations where standard conservative ...
Matine Gharavi, Sara Tavassoli-Hojjati, Zahra Abdolahpour, Hannah Wesley   +3 more
wiley   +1 more source

Effect of coating material on the electrical characteristics of porcelain insulator

, 2020
The nature of overhead porcelain insulators that mounted and exposed to environment may prompt the deposition of contamination sources on its surface.
Ismail, Muhammad Nafis, Mohd Jamail, Nor Akmal, Roslan, Muhammad Hafizzuddin, Baharom, Md Nor Ramdon, Othman, Nordiana Azlin   +4 more
core  

The Influence of Natural Contamination on Pollution Flashover Voltage Waveform of Porcelain Insulators in Heavily Polluted Area

IEEE Access, 2019
It is significant to reveal the characteristics of voltage waveform of porcelain insulator with heavy industry pollution in flashover test. In this study, the contamination of insulator samples came from heavy industry pollution areas was measured.
Lei Lan, Gongda Zhang, Yu Wang, Xishan Wen, Wei Wang, Huan Pei   +5 more
doaj   +1 more source

Flashover voltage variations of glass and porcelain insulators with different contaminants

, 2022
The performance of insulators when exposed to pollution is a very critical issue which highly affects the external insulation design of the power transmission lines and stations.
Bikorimana, Jean Marie, Desmet, Jan, Gebremichael, Mulugeta G.   +2 more
core   +1 more source

A Review of Hydrophobicity Measurement and Classification Methods for High‐Voltage Insulators

Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
Hydrophobicity is a critical property influencing the performance and reliability of high‐voltage insulators, particularly nonceramic types, by mitigating surface contamination and reducing the risk of flashover. This paper presents a comprehensive review of hydrophobicity assessment techniques, spanning traditional laboratory‐based techniques ...
Christos Zachariades, Salihu Salisu, Aliyu Abubakar, Konstantinos Kopsidas, Deepali   +4 more
wiley   +1 more source

Study on Thermal/Moisture Expansion Stress of a Drop-Out Fuse Insulator

Journal of Applied Science and Engineering
Drop-out fuses are widely used electrical devices, and their reliability directly affects the safety of power supply systems. Porcelain insulators, as a critical component, are prone to cracking, which significantly disrupts the order of power production.
Jun Li, Suhui Zhang, Jinpeng Xie, Fei Jiang, Zhaoyu Zhang, Guangru Zhang   +5 more
doaj   +1 more source

Laser‐Engraved Micro‐Patterned rGO/WPU Composite Structures for Aircraft Applications: Synchronizing Electrothermal De‐Icing and Broadband Microwave Transparency

Advanced Science, Volume 12, Issue 45, December 4, 2025.
While conventional electrothermal materials tend to reflect electromagnetic waves during de‐icing. Inspired by the frequency‐selective surface theory, this paper designs NJPS for rGO/WPU electrothermal coatings based on the traditional Jerusalem structure.
Xu Fu, Yizhou Shen, Lingfeng Zhao, Weixin Zhu, Weilan Liu, Chenliang Li, Yuebin Lin, Zongsheng Ye, Chengfeng Shen   +8 more
wiley   +1 more source