English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Aim: To investigate the effect of defective barrier on the optimum breakdown voltage,using positive and negative needle electrodes in an air medium of 10cm gap distance.Methodology: The barriers for the tests were placed at 2.5cm from the point electrode foreach test. The defective barriers were created by having holes of 6mm, 8mm, 12mm and20mm diameter at the centre of the barrier. For each barrier position the breakdown test forpositive and negative polarity for needle electrodes were carried out. Also, tests werecarried out with non defective barrier and with point-plane airgap (without barrier).Result: From the test without barrier the negative point electrode offered higher breakdownvoltage (1.8 times), than the positive point. When with plain barrier the positive point wasoptimized to 1.6 times, while the negative point was lowered.The optimum breakdown voltage decreased gradually as the hole diameter increased andat 20mm hole diameter the effect was like the plain barrier.Conclusion: From the results, optimization is only effective with positive point’s electrodeand it endures even with small opening within the ionization zone. It is necessary to checkthis in practical situations because the specified optimum voltage of an equipment may belowered

Defective Barrier on Voltage Optimization for Small Airgap