scholarly journals Development issues of catenary surge protection system based on a varistor surge arresters

2018 ◽  
Vol 19 (6) ◽  
pp. 43-46
Author(s):  
Andrzej Białoń ◽  
Łukasz Zawadka
Keyword(s):  
Test Section ◽  
Low Voltage ◽  
Wave Impedance ◽  
Protection System ◽  
Surge Arresters ◽  
A Value ◽  
Optimal Distance ◽  
Surge Protection

The article presents na issue of determinating an optimal distance between varistors located on 3 kV DC catenary. Line attenuation as a function of distance has been determined during preliminary tests for the following measurement configurations: catenary network unloaded (open), catenary network charged by a value of resistance close to the value of wave impedance of the catenary network test section, catenary network charged by a low voltage varistor. The results allowed to estimate the optimal distance between the varistors and they were verified on the catenary network on Żmigród Test Ring using a surge generator with an amplitude of about 15 kV and varistors designed to work in railway enviroment. The methodology and results of these studies were presented and analyzed in this paper.

New concept of surge arresters in low voltage networks

2014 ◽  
Author(s):  
Hamza Sehovic ◽  
Zeljko Juric
Keyword(s):  
Low Voltage ◽  
Surge Arresters

Failure of surge arresters on low-voltage mains

1993 ◽  
Vol 8 (1) ◽  
pp. 156-162 ◽  
Author(s):  
D. Birrell ◽  
R.B. Standler
Keyword(s):  
Low Voltage ◽  
Surge Arresters

scholarly journals Efficient replacement of the radioactive sources in the gas-filled surge arresters construction for the insulation co-ordination at the low voltage level

2020 ◽  
Vol 35 (2) ◽  
pp. 130-137
Author(s):  
Teodora Nedic ◽  
Aco Janicijevic ◽  
Koviljka Stankovic ◽  
Nenad Kartalovic
Keyword(s):  
Statistical Data ◽  
Response Rate ◽  
Low Voltage ◽  
Radioactive Source ◽  
Voltage Level ◽  
Experimental Procedure ◽  
Surge Arresters ◽  
Data Processing Software ◽  
Impulse Characteristics

The possibility of the classical response rate engineering and the long-term deconditioning of the gas-filled surge arresters is considered in this paper. The obtained results are compared with the same results obtained with the gas-filled surge arrester with application of an alpha radioactive source. The work is of an experimental nature. Experiments were performed on the multipurpose gas-filled surge arrester model under well-controlled conditions. The measurement uncertainty of the experimental procedure was less than 8 %. The results were processed by statistical data processing software. To draw impulse characteristics, the law of constancy of surfaces below the impulse voltage in the volt-second area, was used.

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