Summary
The test voltage function or k-factor was newly introduced in IEC 60060-1:2010. With the k-factor combined with base curve technique, lightning impulse parameters have been evaluated much easily and stably than with the old method defined in IEC 60060- 1:1989. Now there has been a report in IEC TC 42 committee that front time evaluated from recorded curve of a smooth waveform at the end of a long measuring cable becomes much larger by IEC 60060-1:2010 definition than with IEC 60060-1:1989 description. Authors could not only confirm this phenomenon and find reasons to cause but also propose a technique to circumvent this difficulty. In the paper, details of the counter measure and arrangement of the measuring system, which eliminates erroneous front time evaluation, are introduced.
Additional informations
| Publication type | ISH Collection |
|---|---|
| Reference | ISH2017_589 |
| Publication year | |
| Publisher | ISH |
| File size | 616 KB |
| Pages number | 6 |
| Price for non member | Free |
| Price for member | Free |
Authors
S. NISHIMURA, H. SHIMIZU
Keywords
IEC 60060-1 2010, test voltage function, measuring cable, base curve, lightning impulse voltage
