6. Protections for high-power induction motors
6.1 Review of motor power supply principles
6.1.1 Principle of power supply from distribution boards
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Whether used in a power generation plant or in industry, motors are generally supplied by electrical switchboards. The most powerful motors, typically those with a rated power of a few hundred kW or more, are supplied by switchboards with a rated voltage generally in the HTA (High Voltage A) range, from 3 kV to 10 kV, and exceptionally even higher. A typical example is the 6.6 kV voltage level....
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Protections for high-power induction motors
Protection for synchronous motors and small motors
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