Ukraine, Kotsiubiiv, Kotsiubiiv O & B Theatre

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  • Neo Kotsiubiiv (Нео Коцюбіїв)'s avatar Artist
    Neo Kotsiu...
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    Artistic
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  • Created
    2yrs ago
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Prompt

The AC electric motor used in a VFD system is usually a three-phase induction motor. Some types of single-phase motors or synchronous motors can be advantageous in some situations, but generally three-phase induction motors are preferred as the most economical. Motors that are designed for fixed-speed operation are often used. Elevated-voltage stresses imposed on induction motors that are supplied by VFDs require that such motors be designed for definite-purpose inverter-fed duty in accordance with such requirements as Part 31 of NEMA Standard MG-1.

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