Breakdown characteristics of natural and synthetic ester liquids when containing varying levels of moisture

C. Williamson; I. Timoshkin; S. MacGregor; M. P. Wilson; M. J. Given; M. Sinclair; A. Jones

doi:10.1109/PPPS34859.2019.9009857

Breakdown characteristics of natural and synthetic ester liquids when containing varying levels of moisture

C. Williamson, I. Timoshkin, S. MacGregor, M. P. Wilson, M. J. Given, M. Sinclair, A. Jones

Electronic And Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

5 Downloads (Pure)

Abstract

Ester insulating liquids provide a number of benefits when compared with conventional naphthenic oils. To increase acceptance of esters as a long term replacement for mineral oils in high voltage/pulsed power systems, it is of paramount importance that their dielectric properties are well known. This paper examines the breakdown voltage, and time to breakdown, of MIDEL 7131 synthetic ester, the natural ester Envirotemp FR3 and a mineral oil: Shell Diala S4 ZX, at varying levels of moisture saturation, when exposed to HV impulses of both positive and negative polarity. No statistically significant difference in the breakdown voltage of the ester liquids with increasing relative humidity for either polarity was observed. Noticeable polarity dependence in breakdown voltage values was observed with Envirotemp FR3 liquid, which possesses the highest breakdown strength under positive impulses, but the lowest under negative impulses. Inversely, MIDEL 7131 exhibits the lowest breakdown voltage for positive impulses, and the highest breakdown voltage under negative impulsive energisation.

Original language	English
Title of host publication	2019 IEEE Pulsed Power & Plasma Science (PPPS)
Place of Publication	Piscataway, N.J.
Publisher	IEEE
Number of pages	6
ISBN (Electronic)	9781538679692
DOIs	https://doi.org/10.1109/PPPS34859.2019.9009857
Publication status	Published - 27 Feb 2020

Keywords

electric breakdown
moisture
dielectric liquids

Access to Document

10.1109/PPPS34859.2019.9009857

Williamson-etal-IEEE-PPPS-2020-Breakdown-characteristics-of-natural-and-synthetic Accepted author manuscript, 581 KBLicence: Strath_1

Cite this

@inproceedings{5574965bc7b94e63928a27279d002982,

title = "Breakdown characteristics of natural and synthetic ester liquids when containing varying levels of moisture",

abstract = "Ester insulating liquids provide a number of benefits when compared with conventional naphthenic oils. To increase acceptance of esters as a long term replacement for mineral oils in high voltage/pulsed power systems, it is of paramount importance that their dielectric properties are well known. This paper examines the breakdown voltage, and time to breakdown, of MIDEL 7131 synthetic ester, the natural ester Envirotemp FR3 and a mineral oil: Shell Diala S4 ZX, at varying levels of moisture saturation, when exposed to HV impulses of both positive and negative polarity. No statistically significant difference in the breakdown voltage of the ester liquids with increasing relative humidity for either polarity was observed. Noticeable polarity dependence in breakdown voltage values was observed with Envirotemp FR3 liquid, which possesses the highest breakdown strength under positive impulses, but the lowest under negative impulses. Inversely, MIDEL 7131 exhibits the lowest breakdown voltage for positive impulses, and the highest breakdown voltage under negative impulsive energisation.",

keywords = "electric breakdown, moisture, dielectric liquids",

author = "C. Williamson and I. Timoshkin and S. MacGregor and Wilson, {M. P.} and Given, {M. J.} and M. Sinclair and A. Jones",

note = "{\textcopyright} 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.",

year = "2020",

month = feb,

day = "27",

doi = "10.1109/PPPS34859.2019.9009857",

language = "English",

booktitle = "2019 IEEE Pulsed Power & Plasma Science (PPPS)",

publisher = "IEEE",

}

TY - GEN

T1 - Breakdown characteristics of natural and synthetic ester liquids when containing varying levels of moisture

AU - Williamson, C.

AU - Timoshkin, I.

AU - MacGregor, S.

AU - Wilson, M. P.

AU - Given, M. J.

AU - Sinclair, M.

AU - Jones, A.

N1 - © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2020/2/27

Y1 - 2020/2/27

N2 - Ester insulating liquids provide a number of benefits when compared with conventional naphthenic oils. To increase acceptance of esters as a long term replacement for mineral oils in high voltage/pulsed power systems, it is of paramount importance that their dielectric properties are well known. This paper examines the breakdown voltage, and time to breakdown, of MIDEL 7131 synthetic ester, the natural ester Envirotemp FR3 and a mineral oil: Shell Diala S4 ZX, at varying levels of moisture saturation, when exposed to HV impulses of both positive and negative polarity. No statistically significant difference in the breakdown voltage of the ester liquids with increasing relative humidity for either polarity was observed. Noticeable polarity dependence in breakdown voltage values was observed with Envirotemp FR3 liquid, which possesses the highest breakdown strength under positive impulses, but the lowest under negative impulses. Inversely, MIDEL 7131 exhibits the lowest breakdown voltage for positive impulses, and the highest breakdown voltage under negative impulsive energisation.

AB - Ester insulating liquids provide a number of benefits when compared with conventional naphthenic oils. To increase acceptance of esters as a long term replacement for mineral oils in high voltage/pulsed power systems, it is of paramount importance that their dielectric properties are well known. This paper examines the breakdown voltage, and time to breakdown, of MIDEL 7131 synthetic ester, the natural ester Envirotemp FR3 and a mineral oil: Shell Diala S4 ZX, at varying levels of moisture saturation, when exposed to HV impulses of both positive and negative polarity. No statistically significant difference in the breakdown voltage of the ester liquids with increasing relative humidity for either polarity was observed. Noticeable polarity dependence in breakdown voltage values was observed with Envirotemp FR3 liquid, which possesses the highest breakdown strength under positive impulses, but the lowest under negative impulses. Inversely, MIDEL 7131 exhibits the lowest breakdown voltage for positive impulses, and the highest breakdown voltage under negative impulsive energisation.

KW - electric breakdown

KW - moisture

KW - dielectric liquids

U2 - 10.1109/PPPS34859.2019.9009857

DO - 10.1109/PPPS34859.2019.9009857

M3 - Conference contribution book

BT - 2019 IEEE Pulsed Power & Plasma Science (PPPS)

PB - IEEE

CY - Piscataway, N.J.

ER -

Breakdown characteristics of natural and synthetic ester liquids when containing varying levels of moisture

Abstract

Keywords

Access to Document

Fingerprint

Cite this