Description
This study focused on the effect of the wave-front time on the impulsive breakdown characteristics of ester liquids, and on how variations in their performance compare with changes in the breakdown characteristics observed in naphthenic oils. The chosen liquids; synthetic ester MIDEL 7131, natural ester Cargill EnviroTemp FR3 and transformer oil Shell Diala S4 ZX, were exposed to standard (1.2/50µs) and non-standard (7/170µs) impulses of both positive and negative polarity under an overstressed voltage regime. As experimental conditions varied only in voltage wave-shape this facilitated direct comparison of obtained breakdown parameters; breakdown voltage and time delay to breakdown, to gain greater appreciation for the sensitivity of dielectric performance to wave-front time. Furthermore, it enabled the identification operational dissimilarities between ester fluids and naphthenic oils; providing data for designers and operators of power and pulsed power systems, helping to determine whether naphthenic oils can be directly replaced with esters in existing high voltage systems.| Period | 15 Jan 2020 → 16 Jan 2020 |
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| Event title | 13th Universities High Voltage Network Colloquium |
| Event type | Conference |
| Location | Glasgow, United KingdomShow on map |