Fast Transient Response of High Voltage Surge Arresters: Characterisation of Zinc Oxide - Couverture souple

Abdul-Malek, Zulkurnain

 
9783639290578: Fast Transient Response of High Voltage Surge Arresters: Characterisation of Zinc Oxide
Couverture souple
ISBN 10 : 3639290577 ISBN 13 : 9783639290578
Editeur : VDM Verlag Dr. Müller, 2010

Synopsis

The overvoltage protection performance of zinc oxide surge arresters under fast transient conditions is investigated in this work. Double impulse tests have been conducted on 15kV rated zinc oxide surge arresters to investigate impulse preconditioning effects on the zinc oxide protective characteristics. Test results show that the application of double impulses of similar shape and amplitudes with the same or opposite polarities and 10ms or longer time intervals has no significant effect on the protective performance. Impulse voltages and currents up to 6kA were used to test pairs of parallel-connected arresters with both matched and unmatched voltage-current characteristics. The current sharing performance of both matched and unmatched arresters improves as the current increases towards the rated value. The thermal differences between columns significantly change the current balance and may jeopardise the protective performance of multicolumn devices. Asymmetrical configuration has also been proved to affect the current balance in parallel arresters. Changes in the spark gap breakdown characteristics were observed when tested with the arrester in parallel.

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Éditeur
VDM Verlag Dr. Müller
Date d'édition
2010
Langue
anglais
ISBN 10 
3639290577
ISBN 13 
9783639290578
Reliure
Broché
Nombre de pages
152
Coordonnées du fabricant
non disponible
Personne responsable
non disponible