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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Interview: Jamie Stapleton, digital leader, ABB ...Following the announcement that Hitachi is to acquire ABB's Power Grids division, the firm's digital leader for transformers, Jamie Stapleton, talks about ABB's coordinated approach to industrial digitalisation and explains how a robotic vehicle is making transformer inspections faster, cheaper and much safer.
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