In acceptance testing of dry type, resin insulated instruments (voltage) transformers different partial discharges characteristics may be obtained by adopting the two arrangements suggested in the IEC 44-4 standard. Although the electric field distribution inside the component does not significantly depend on test arrangement, different partial discharge results are obtained. The unlike behaviours obtained by adopting the two set-ups are presented and explained. Some criticism to the present form of the standard is raised and suggestions of improvement are presented
Partial Discharges Measurements for Acceptance Testing of Resin-insulated Voltage Transformers / L., Egiziano; Lupo', Giovanni; Petrarca, Carlo; V., Tucci; M., Vitelli. - STAMPA. - (1998), pp. 551-556. (Intervento presentato al convegno International Symposium on Development in Digital Measuring Instrumentation tenutosi a Napoli, Italy nel 17-18 settembre 1998).
Partial Discharges Measurements for Acceptance Testing of Resin-insulated Voltage Transformers
LUPO', GIOVANNI;PETRARCA, CARLO;
1998
Abstract
In acceptance testing of dry type, resin insulated instruments (voltage) transformers different partial discharges characteristics may be obtained by adopting the two arrangements suggested in the IEC 44-4 standard. Although the electric field distribution inside the component does not significantly depend on test arrangement, different partial discharge results are obtained. The unlike behaviours obtained by adopting the two set-ups are presented and explained. Some criticism to the present form of the standard is raised and suggestions of improvement are presentedI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
