Resonant Grounded Isolation Transformers to Prevent Ignitions from Powerline Faults

2020 ◽  
pp. 1-1
Author(s):  
Jesse Rorabaugh ◽  
Andrew Swisher ◽  
Jim Palma ◽  
Gabriel Andaya ◽  
Matthew Webster ◽  
...  
Keyword(s):  
Isolation Transformers

Research of Airfield Lighting Insulation Resistance Prediction Based on Gray System Theory

2012 ◽  
Vol 263-266 ◽  
pp. 1279-1284
Author(s):  
Xiu Yan Wang ◽  
Cui Fang Li ◽  
Zong Shuai Li ◽  
Jia Quan Lin
Keyword(s):  
System Theory ◽  
Insulation Resistance ◽  
Lighting System ◽  
Gray System Theory ◽  
Gray System ◽  
International Airport ◽  
Resistance Prediction ◽  
Predicted Values ◽  
Isolation Transformers ◽  
Resistance Value

Airfield lighting circuit is an important part of airfield lighting system, and the insulation resistance value of this circuit is affected by humidity, temperature, the quality and the number of the Isolation Transformers and many other factors, so it is difficult to accurately predict the resistance size by using traditional methods. In the light of insulation resistance values of airfield lighting circuit, this paper put forward adopting Gray System Theory to make the prediction, and then build GM(2,1) model to analyze and forecast the resistance values according to the actually measured values of the insulation resistance at Shanghai Pudong International Airport. Finally, the research shows that there is only a little difference between predicted values and the actually measured values. In other words, the prediction of insulation resistance based on Gray System Theory is viable.

scholarly journals Analysis of Skin Effect in High Frequency Isolation Transformers

2019 ◽  
Author(s):  
Mohamad Saleh Sanjari Nia ◽  
Sepehr Saadatmand ◽  
Mohammad Altimania ◽  
Pourya Shamsi ◽  
Mehdi Ferdowsi
Keyword(s):  
High Frequency ◽  
Skin Effect ◽  
Isolation Transformers

scholarly journals Newly Developed Compact Isolation Transformers for Signaling Networks

2021 ◽  
Vol 16 ◽  
pp. 178-184 ◽  
Author(s):  
Hitoshi Kijima ◽  
Chikashi Okabayashi
Keyword(s):  
Frequency Band ◽  
Insertion Loss ◽  
Signaling Networks ◽  
Lightning Protection ◽  
Common Mode ◽  
Transmission Frequency ◽  
High Isolation ◽  
Common Mode Voltage ◽  
Low Insertion Loss ◽  
Isolation Transformers

This paper describes the specifications of newly developed compact isolation transformers for signaling networks such as telecommunication installations and information installations. These networks can use isolation transformers to mitigate surges occurring on services. It means that isolation transformers are used to eliminate the affect of noise and common mode voltage. Also the isolation transformers provide lightning protection for these networks. As the specifications of conventional isolation transformers are not sufficient, small-sized isolation transformers were developed. The new isolation transformers offer high isolation withstand voltage (50kV, 1.2/50μs) with low insertion loss (0.5dB) in the transmission frequency band of 500Hz to 30 MHz. The weight is only 0.3kg and the size is only 6×6×5cm.

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