In order to make the dry-type transformer more safe, the insulation performance of dry-type transformer is one of the important performance to improve the safety performance of dry-type transformer. The main performance of dry-type transformer insulation performance is the insulation resistance of dry-type transformer, and the insulation resistance of dry-type transformer is one of the important properties of dry-type transformer. What are the test methods for insulation resistance of dry type transformer?
Dry type transformer
Insulation resistance measurement method of dry type transformer:
1。 Open the high and low voltage switches of dry-type transformer to stop the operation of dry-type transformer.
The two conductors of the insulation resistance tester are connected to the bushing of the dry transformer at one end and the shell and ground wire of the dry transformer at the other end.
3. The handle of the resistance measuring device shakes at the speed of 120 rpm, and the resistance value can be read out on the instrument dial, that is, the number of insulation resistance of dry-type transformer.
These are the main methods to determine the insulation resistance of dry-type transformer, which are used to determine the insulation resistance of dry-type transformer according to the above-mentioned measurement methods. Therefore, dry-type transformer can improve the main performance, safety and efficiency of dry-type transformer, and realize continuous upgrading of dry-type transformer!
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