Results 51 to 60 of about 674 (179)

Regional Court in Brno on Cartels in 2012. Case comments to judgments in CRT cartel and GIS cartel [PDF]

Yearbook of Antitrust and Regulatory Studies, 2013
In 2012, the Regional Court in Brno has delivered a couple of judgements in two globally notorious cases which were primarily dealt with by the European Commission: the gas insulated switchgear cartel (GIS cartel) and the cathode ray tubes cartel (CRT ...
Petra Joanna Pipková
doaj  

Research on Power Frequency Insulation Properties and Configurations of CF3SO2F Gas Mixture for Industrial Applications

High Voltage, Volume 11, Issue 2, Page 556-563, April 2026.
ABSTRACT The breakdown characteristics of the novel eco‐friendly insulating gas CF3SO2F are fundamental to the design of gas‐insulated equipment. In this paper, the gas mixture parameters for CF3SO2F were optimised for different ambient temperatures in order to ascertain the insulation performance and liquefaction temperature constraints.
Shubo Ren, Wenjun Zhou, Yu Zheng, Dongxin Hao, Wei Liu, Keli Gao   +5 more
wiley   +1 more source

Highly Selective Adsorption of Fluorinated Gases by Porous Organic Cages – Effects of Fluorinated Side‐Chains

Advanced Materials, Volume 38, Issue 7, 2 February 2026.
A systematic study of a series of porous organic cages with perfluorinated alkyl side‐chains of different lengths is presented. The structure‐property relationship of the various cages on gas sorption of highly potent greenhouse gases, such as perfluorocarbons (PFCs), sulfur hexafluoride (SF6), and nitrogen trifluoride (NF3) is investigated.
Ke Tian, Wen‐Shan Zhang, Anjana Kunhumbadukka Othayoth, Moritz Philip Schuldt, Francesco Walenszus, Frank Rominger, Rasmus R. Schröder, Sven Michael Elbert, Michael Mastalerz   +8 more
wiley   +1 more source

Breakdown Voltage Using Bond Energy Calculation for CF3CHCl2/CO2 Mixture as Insulation Applied

JAREE (Journal on Advanced Research in Electrical Engineering), 2019
— Sulfur hexafluoride gas according to the Montreal Protocol and Kyoto protocol needs to be limited and gradually reduced because it causes global warming, the greenhouse effect and acid rain on the environment.
Tedy Juliandhy
doaj  

Adsorption properties of Ni cluster modified TiO2 (1 0 1) towards SF6 decomposition gases

High Voltage, 2023
Online detection of insulation defects the decomposition products of SF6 plays a key role in ensuring the safe operation of the gas‐insulated switchgear (GIS) equipment. The pristine TiO2 (1 0 1) modified by Ni cluster (1–3 Ni atoms) is used as a new gas‐
Yingang Gui, Shun Yang, Chang Ji, Xianping Chen   +3 more
doaj   +1 more source

Spectral Characteristics and Evolution Mechanism of Silicon Rubber Surface Discharge Under Thermal Ageing Condition

High Voltage, Volume 11, Issue 1, Page 192-200, February 2026.
ABSTRACT Surface discharge is a typical fault type in electric power equipment. High temperature in long‐term operation can easily lead to ageing of materials, resulting in changes in surface characteristics and surface discharge faults. In this paper, a method of surface discharge identification of silicon rubber (SiR) based on spectral detection ...
Yanze Han, Liankang Zhang, Beibei Sun, Lu Liu, Guochang Li, Shengtao Li, Yanhui Wei   +6 more
wiley   +1 more source

Nondestructive Measurement of Residual Stress on Epoxy Insulators Using Thermoelastic Method

High Voltage, Volume 11, Issue 1, Page 274-283, February 2026.
ABSTRACT Residual stress is inevitable in epoxy insulators, which easily leads to small cracks and even insulation breakdown during the operation of gas‐insulated transmission line (GIL)/gas‐insulated switchgear (GIS). This study proposes a nondestructive method to measure the residual stress on epoxy insulators using thermoelastic effects.
Hucheng Liang, Bei Chu, Boxue Du
wiley   +1 more source

Electric Field Improvement and Insulation Performance Enhancement of a Compact 40.5 kV Eco-Friendly Gas-Insulated Switchgear

Energies
With the ongoing trend of miniaturization and intelligent power transmission equipment, the compact design of environmentally friendly gas-insulated switchgear (GIS) has emerged as a critical technical challenge. This study presents a detailed case study
Dongyun Dai, Yuhao Zhang, Yimin You, Zehong Lin, Xiangzhong Liao   +4 more
doaj   +1 more source

Quantitative Evaluation of Mechanical Defects for Circuit Breakers Based on Self‐Adaptive Fault Feature Tracking

High Voltage, Volume 11, Issue 1, Page 297-304, February 2026.
ABSTRACT Many researchers are committed to improving the diagnosis accuracy and solving the few‐shot problem on circuit breakers (CBs). However, the research on the vibration transmission mechanism of the fault is insufficient, which makes it difficult to find the potential design defects of CBs through vibration.
Jiayi Gong, Yaxiong Tan, Shangding Li, Jian Li   +3 more
wiley   +1 more source

Surface Flashover in 50 Years: III. Extreme Environments and Industrial Challenges

High Voltage, Volume 11, Issue 1, Page 100-142, February 2026.
ABSTRACT Modern high‐voltage electrical equipment operates in complex environments where surface conditions are subjected to multifaceted influences from electric fields, thermal gradients, contaminants, irradiation and other extreme environmental factors.
Zhen Li, Heng Zhang, He Gao, Ji Liu, Yoshimichi Ohki, George Chen, Shengtao Li   +6 more
wiley   +1 more source