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| Titel: |
The Effects of Protection Devices Against Surges when Switching on Large AC Motors |
| Auteur: |
Kemnitzer, Andreas |
| Verschenen in: |
Electric power components & systems |
| Paginering: | Jaargang 20 (1992) nr. 2 pagina's 103-112 |
| Jaar: |
1992-03-01 |
| Inhoud: |
The increasing use of vacuum circuit breakers requires the protection of AC motors from switching surges caused by prestrike and restrike of the switch contacts. Such surges have been blamed for motor failures, which can result in very large outage costs for utilities. Recorded switching surges have shown rise times within nanoseconds and magnitudes up to 5 p.u. To gain insight into voltage distribution at transients in high-tension mains, measurements with a low voltage impulse generator were taken in a power plant. After identification of the parameters of this plant, a simulation model was created, first of all, to reproduce the measurements and then to study the surge phenomena taking place during operation of the plant. In the following, I will discuss the effects of a number of protection devices (RC-wiring, ZnO-Varistors) at different locations. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 11 van 11 gevonden artikelen
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