Surface Insulation Resistivity as per ASTM A717

Energy loss of the transformer is not only depends on the grade of electrical steel but also depend on the insulation of the electrical laminations. As per ASTM A717 and IS649 we have developed Franklin Tester which gives the surface insulation resistivity of electrical steel sheet. Franklin Tester is having auto test facility and thermal printer interface which make the testing just a key away.

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