3310A Transformer DC Resistance Tester

The DC resistance of the transformer is a must-test item for semi-finished and finished product factory testing, installation, acceptance testing, and preventive testing by the power department during transformer manufacturing. It can effectively detect manufacturing defects such as material selection, welding, loose connections, missing strands, broken wires, and hidden dangers after operation of the transformer coil.

• Ambient Temperature: -10℃～50℃
• Ambient Humidity: ≤85%RH
• Working Power Supply: AC220V±10%
• Power Frequency: 50±1Hz

• Three-phase test:For the high voltage side or low voltage side for YN or yn connection mode transformer, only one wiring is needed, the instrument can use the three-phase simultaneous measurement method to test A0, B0, C0 DC resistance, and automatically calculate the three-phase imbalance rate, greatly saving the test time;
• Single phase test:For any transformer of any connection mode, only one wiring is needed, the instrument can operate and select any winding of the transformer for testing, the whole test process does not need to reverse the test line;
• Magnetic testing: For the three-phase five-column low-voltage angular (YNd 11) connection transformer, the instrument can automatically connect or short the magnetic circuit of the winding, can quickly test the DC resistance of the low-voltage winding;
• The instrument is equipped with a test matrix, which can save the phase of each tap position of the transformer, and can also be converted to the DC resistance value at the rated temperature;
• The instrument adopts 5.7-inch large LCD display, Visible clearly in the sun;
• Instrument with high-speed micro thermal printer: can print measurement and historical data;
• The instrument can permanently store 500 groups of test data, and can also use USB flash disk to store data;
• The instrument has perfect back EMF protection function;
• The instrument has the functions of automatic discharge and discharge indication to reduce misoperation and ensure the safety of equipment and personnel;
• The instrument has the characteristics of wide applicable temperature, high precision, shockproof, anti-interference and convenient carrying.

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