Transformer Tester
- GDB-IV Battery Charge Transformer Turns Ratio Tester Three Phase Transformer Excitation Current Tester
- GDB-P Three Phase Transformer Voltage Ratio Tester Turns Ratio TTR Meter
- GDB-D Z Type Three Phase Transformer Turns Ratio Meter
- GD-2305/2306 5kV, 10kV High Voltage Insulation Resistance Meter, Megger Meter