How to test the insulation resistance of the 10kV current transformer?
Take a short ground shaking table L side, two short circuit grounding tramegger E end, this is the measurement of transformer "one to two times and" (similar to the measurement of transformer insulation of high low insulation to ground), but also can measure the "two times of time and". Generally, the insulation resistance is not less than 1000 euro at one time.
When measuring the non tested winding (or end screen), the shell should be grounded.
Using 2500V insulation resistance measuring instrument (also known as insulated ohmmeter, including insulation shaking table), measuring the primary winding, the two winding, the end screen.
