Factory Inspection Standards For High-voltage Disconnectors

However, after checking the oscilloscope diagram and verifying with the factory inspection personnel, it was found that the factory inspection items at that time stipulated that the closing speed of hv isolator switch should be within the range of 1.7 to 2.5 m/s. When the closing speed of high voltage electrical isolator did not meet the requirements, the small spring could be removed and the product could only be shipped after passing the isolator high voltage test.