A system and method for changing wind turbine rotor diameters to meet changing wind speeds and control system loads is disclosed. The business application structures are transformed from the application level, including consideration of the business application logic and relationships. At this time, the opening face of the loop antenna 3 is in a direction almost perpendicular to the surface of a living body for improving sensitivity. The system may provide an indication that voltage is detected in the electrical bus, but that no hazardous voltages are detected within the electrical device downstream of the isolation switch. The method also includes monitoring the video stream.