Detection and analysis of spark discharge products of C₅F₁₀O by electron attachment mass spectrometry

Abstract

C 5 F 10 O has the potential to replace SF 6 as an insulation gas in switchgears due to its high breakdown field strength and low global warming potential. However, as a newly synthesized gas, the chemical characteristics of C 5 F 10 O are not well known. In particular, the discharge products of C 5 F 10 O are not clear, which limits its insulating capability evaluation in long-term use, and further hinders the development of a gas sensor to monitor the insulation deterioration of C 5 F 10 O-containing switchgears. In this paper, electron attachment mass spectrometry (MS) was proposed to detect the decomposed products of C 5 F 10 O under pulsed spark discharge condition. It was found that the ionization source of the MS had an optimal electron energy of 2 eV to avoid decomposing the gas molecules to be detected while having a high detection sensitivity. The detected discharge products mainly included CF

Review on decomposition characteristics of eco-friendly gas insulating medium for high voltage gas insulated equipment

“…For an eco-friendly gas insulating medium, Wang et al detected the decomposed products of C 5 F 10 O under a pulsed spark discharge based on EAMS. It was pointed out that CF 4 , C 2 F 4 , C 3 F 6 , C 3 HF 5 , C 3 F 8 , C 3 HF 7 , C 4 F 10 , C 5 F 10 , C 6 F 12 , C 3 F 4 O and C 2 F 6 O were found using EAMS while only C 2 F 4 , C 2 F 6 , C 3 F 6 , C 3 F 8 and C 4 F 10 could be detected with GC-MS [59].…”

Ab initio molecular dynamics calculations on electron ionization induced fragmentations of C4F7N and C5F10O for understanding their decompositions under discharge conditions

“…46 And our experimental results are line with what was reported before. According to our experimental results and other references, 9–11,46,47 the main decomposition products of C 4 F 7 N and C 5 F 10 O and their mixtures with buffer gas under discharge conditions can be summarized as follows:(1) CF class: CF 4 , C 2 F 6 , C 3 F 8 , C 4 F 10 , C 3 F 6 , and C 4 F 8 ;(2) CFN class: CF 3 CN, C 2 F 5 CN, C 2 F 3 CN, and (CN) 2 ;(3) CFO class: CF 2 O, C 2 F 4 O, and C 4 F 8 O.…”

“…46 And our experimental results are line with what was reported before. According to our experimental results and other references, [9][10][11]46,47 the main decomposition products of C 4 F 7 N and C 5 F 10 O and their mixtures with buffer gas under discharge conditions can be summarized as follows:…”

Interruption characteristic of 3%C5F10O/97%CO2 gas mixture in a 40.5 kV circuit breaker

“…According to the main components and theoretical analysis of the experimental detection in the previous work [23,24], the particle types considered in different gas arc plasmas are shown in table 1.…”