GDGS 10kV Transformer Tan Delta IPF Tester ready for shipment Today we completed the production of GDGS Transformer Tan Delta IPF Tester and shipped to our regular customer.GDGS Transformer Tan Delta IPF Tester is used to measure tan delta,capacitance,power factor and so on of transformer or other insulation materials. The output voltage is 10KV, 12KV can be c