Підвищення надійності кіл опалення електровозів ЧС4 та ЧС8
Power contact fusing currents for 7SP1 and 1SVAD8 contactors used in heating circuits of electric locomotives have been determined. It has been shown that in operation there may be situations when short-circuit currents are significantly greater than fusing currents. In this condition, a short-circu...
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| Date: | 2011 |
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| Main Author: | |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
Інститут технічних проблем магнетизму НАН України
2011
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| Series: | Електротехніка і електромеханіка |
| Subjects: | |
| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/143561 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Підвищення надійності кіл опалення електровозів ЧС4 та ЧС8 / О.О. Маренич // Електротехніка і електромеханіка. — 2011. — № 4. — С. 72-74. — Бібліогр.: 5 назв. — укр. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | Power contact fusing currents for 7SP1 and 1SVAD8 contactors used in heating circuits of electric locomotives have been determined. It has been shown that in operation there may be situations when short-circuit currents are significantly greater than fusing currents. In this condition, a short-circuit current goes through the contactors contacts before protection actuation over a period of time long enough for the contacts fusion resulted from insufficient thermal stability current. Recommendations for thermal stability current values in the heating circuits have been developed. |
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