Transformer DC Resistance Tester

Inductive DC Resistance Tester

 

• On large transformers with a five-leg core and low-voltage windings connected in delta, the tester can be used to test the HV and LV series excitation mode.
• The magnetic augmented circuit of the windings can be automatically connected to quickly and accurately test the DC resistance of the low-voltage windings.
• Three Phases Test function measures the three-phase DC resistance of the star-connected windings synchronously and calculates the three-phase unbalance rate automatically.
• The phase by phase test function can also be used for phase by phase test on transformers with YN and D ( Y ) connections
• The winding material selector can be set according to the winding material of the transformer, such as copper or aluminum, to distinguish the conversion temperature coefficient of different materials.
• Equipped with transformer YN winding neutral point lead line resistance detection function
• Fitted with complete protection circuit and sound discharge alarm, to inform the clear discharge indication and reduce the misoperation.
• 7 inch color touch screen display for real time data display.
• RS232 comms port to transmit data onboard, 100 groups of data can be stored
• Parameter settings :  test windings, tapping positions, test phases, tested sample temperature and conversion temperature of the transformers.

• 10A+10A: 1mΩ～0.6Ω
• 5A+5A: 2mΩ～1.2Ω 1A+1A: 10mΩ～6Ω
• 200mA+200mA: 100mΩ～30Ω
• 20mA+20mA: 10Ω～200Ω

• 20A: 0.5mΩ～1Ω
• 10A: 1mΩ～2Ω
• 5A: 2mΩ～4Ω
• 1A: 10mΩ～20Ω
• 200mA: 100mΩ～100Ω
• 20mA: 10Ω～20KΩ