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Medium Voltage Circuit Breaker Course Chapter 3.0 Student ...· PDF fileFigure 3-3. We will be using this diagram to discuss the following electrical operating sequence of a circuit breaker. 3.3.1 Electrical Charging: The charging motor is energized automatically when breaker is racked in. In the schematic shown the motor is energized from pin 5 and 6 (Figure 3-3) on the secondary disconnect.

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