Why Can't The High-voltage Disconnect Switch Be Operated Even Though The Porcelain Insulator And The Slide Wire Shaft Are Twisted Into A Spiral?

The components between the rotating porcelain insulator and the slide rail shaft were tightly intertwined, like a twisted rope, yet normal operation of high voltage isolator was still impossible. Analysis revealed that if the drive chain or spring mechanism of high voltage isolator switch had accumulated wear or poor return, even if the operation appeared to be "completed" externally, it would not actually trigger the main contact to close or open. Further testing confirmed that the twisted section of the slide rail shaft had altered the position of the bearing, causing a torque transmission offset, resulting in the operating lever of hv isolator moving but the main contact not switching synchronously.