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Power Technology and Engineering

, Volume 52, Issue 1, pp 116–119 | Cite as

Calculating the Starting Currents of Electric Motors in 0.4 kV Auxiliary Networks of Nuclear Power Plants

  • Sh. A. Aroyan
Article
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Consideration is given to the effect of the resistance of the cable supplying power to the electric motor in the 0.4 kV auxiliary network of a nuclear (thermal) power plant on the starting current and, hence, on the current setpoint for the circuit breaker, on its sensitivity to short-circuit current, and on the cable size. It is shown that accounting for the resistance of the power cable of the motor that is commensurable with the starting resistance of the latter allows using a cable of smaller size compared with that determined regardless of its resistance.

Keywords

motor circuit breaker cable starting current short-circuit current offset sensitivity factor 

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References

  1. 1.
    I. A. Syromyatnikov, Operating Modes of Asynchronous and Synchronous Motors [in Russian], Énergoatomizdat, Moscow (1984).Google Scholar
  2. 2.
    G. G. Gimoyan, Relay Protection of Mining Electric Installations [in Russian], Nedra, Moscow (1978).Google Scholar
  3. 3.
    State Standard GOST 28249–93. Short Circuits in Electrical Installations: Design Methods for 1 kV Alternating-Current Electric Installations [in Russian], Izd. Standartov, Moscow (1994).Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Armenian NPPMetsamorRepublic of Armenia

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