Impulse Voltage Test System, 200 – 10’000 kV / 10 – 1’500 kJ. Fast rising wave. voltage: kV yes no TECHNICAL QUESTIONNAIRE - Impulse Voltage Test System, page 4 of 4 (recommended for standard wave shapes) (recommended for chopped wave shapes) Impulse Test concepts by Philip J Hopkinson, PE Good impulse Test : 1. 113 0 obj <>stream The impulse voltage divider (4), which is capaci-tively damped, measures full and crest-chopped lightning and switching impulses. IS 2026 (Part 3) : 2009 lEe 60076-3:2000 IEC 60790, Oscilloscopes andpeak voltmeters for impulse tests IEC 61083-1, Digital recorders for measurements in high-voltage impulse tests - Part 1: Requirements for digital recorders IEC 61083-2, Digital recorders for measurements in high-voltage impulse tests - Part 2: Evaluation ofsoftware used for the determination ofthe parameters ofimpulse waveforms 2. Test sample met the requirements. The value of criticalimpulse flashover voltag- e is higher then 92 percent of the rated critical-impulse flashover voltage, i.e. Vice versa when a test voltage V 0 is specified for standard reference atmo-sphere, the actual test voltage value can be calculated by the converse procedure: V ¼ K t V 0: ð2:9Þ Because the converse procedure uses the breakdown voltage V 50 (Eq. �wU��T2{�R���l��OJ�~���=�ʼd�y��S�S���,Q�^�����u��9���|S�B��aZ�!�̜ �V .�T7|z�E�!j�vM�I�N{/4��?������B���&. Able to excite all natural frequencies of the windings Ideal Impulse Test 1. APPLICATION . Higher line terminal voltage than can occur in the field 2. SGVA impulse test systems can be used to generate impulse voltages simulating lightning strokes and switching surges. %PDF-1.6 %���� The chopping gap (5) provides a fast volt-age breakdown. (2.9) is limited to values of K t close to unity, for K t \0.95 it is The rated critical-impulse flashover voltage 200 kV is specified by ANSI C29.18, Table 1. 184 kV. MX-%��!��C�ǷG�ܭ֖,tǠO�����wO!�>Y��}���;�A�I tϻ-�I�Q�4�U�V�|��G��~dj�7�����Y�]�A�8��%9�P��¬���/����� ���[7����n�̪����>�$&�6�e r���lI(�J�������8���o�D�;шSm�Uҿjp/�䭇���Z�c�� ���=���$Cͽ+x7a�v$^b0F�����Ez=��F�����hm��W��am�-"��b2VMI�sѫ�c�R%/~�b�Voߖѣ�'�O�2*�C&��T��f��&��6Xd`���Zs���;[�g!��5�0��ǩ�}�����Y�ڜ�Y�j������#��,����|��&����pۤI�O{+. 2 active flammability (fig. Academia.edu is a platform for academics to share research papers. 1) According to EN/IEC 60384-14:2005 Capacitor class U p kV X1 4 X2 2.5 none Y1 8 Y2 5 none Y4 2.5 Fig. endstream endobj 114 0 obj <>stream Test Ca 90 – 95% R.H. U U i U R time impulse voltage test (fig. Significant hold time 2. 1 Fig. The total charging voltage ranges from 200 kV to 10’000 kV with a per-stage energy of 10 to 30 kJ.
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