Measuring method for insulation resistance of voltage transformer
You are measuring a grounded voltage transformerAs long as the connection is not connected on the A side, the connection is measured at the end of the A because of the high voltage winding resistance and the first two times the sum of the insulation resistanceThe X end is very close to the two winding
Measurement of insulation resistance of voltage transformer (electromagnetic type): measure the insulation resistance of PT primary winding and two winding separately:It must be a winding end A and the end X connection (shorted) after compression, two secondary winding short circuit grounding. The insulation tested is primary winding to the two winding and to the ground insulation.The primary winding of the first end A and the end X connection (shorted) after compression, the insulation resistance tester L end, two winding short circuit insulation resistance tester E end insulation test for a winding on the two winding insulation.The primary winding head end A and terminal X connection (shorted) after grounding, two winding short circuit insulation resistance tester L end insulation test for the two time on the primary winding of the winding insulation. The two winding can also be measured in groups.
Measuring the insulation resistance of the voltage transformer: the first end of the primary winding of the electromagnetic type PT leads to the high voltage end, which is generally represented by the A terminal, and the end is the X end. The terminal is mounted in the two junction box and the X terminal must be grounded at run time.
