The Magnetic Balance Tester is only an indicative test for the transformer. The aim of this test is to check the insulation both between phases and between turns of the windings and also the insulation between the input terminals of the graded insulation windings and earth. During test, normally the test voltage is applied to the low voltage winding. Apart from this, provided Magnetic Balance Tester is sternly tested by our quality controllers on variegated parameters so as to ensure its high performance.