Product Details

Transformer Ratio and Group Automatic Tester uses a large-screen true-color LCD as the display,with a full Chinese graphical operation interface and Chinese prompt information, multi-parameter display LCD interface, friendly human-machine dialogue interface, vector diagram display and wiring judgment provide a reliable basis for checking the correctness of the circuit. Full touch conductive silicone keyboard operation mode, good operation feel, easy to learn. The instrument has a built-in large-capacity data memory that does not lose data when power is off, which can save on-site calibration data, and can be expanded to store up to 1000 sets of on-site calibration results. It can provide background computer management software to upload results to a computer for computerized management.

Transformer Ratio and Group Automatic Tester performance features:

1. True three-phase test: single-phase power input, internal digital synthesis of three-phase standard sine wave signal source, through high-fidelity power amplifier, generates three-phase test power (distortion less than 0.1%) output, test results have better equivalence, no group misjudgment and other phenomena.

2. Powerful functions: it can not only perform single-phase measurement, but also realize automatic testing of three-phase windings. Single-phase and three-phase can measure polarity, phase angle, complete the measurement of AB, BC, CA three-phase ratio value, phase angle value, error, tap position, tap value and other parameters at one time, and can automatically identify the group number.

3. Phase angle measurement function: accurately measure the phase angle between high and low voltage sides, and can measure the ratio and angle of transformers with non-integral tap positions.

4. Hexagonal diagram display function: test results are displayed in digital and hexagonal vector diagrams, intuitively showing the transformer connection group situation.

5. Blind test function: no need to select wiring mode, no need to select wiring group, measuring Y/△, △/Y transformers without external short circuit, can automatically switch wiring mode according to the selected test content. It can completely measure the ratio and group number of transformers without nameplates.

6. Tap test: can quickly measure the ratio and ratio error at each tap switch position, the rated ratio only needs to be input once, and the ratio error at each tap position can be calculated without repeated input.

7. It has both turns ratio measurement and operating voltage ratio measurement functions. The operating ratio can more truly reflect the actual value of the voltage ratio during actual operation of the transformer.

8. It has the function of simulating parallel operation of main transformers, and can analyze the actual situation when two main transformers operate in parallel.

9. Good vibration resistance: the use of connectors enhances vibration resistance.

10. Revolutionarily displays the magnitude and phase relationship between various voltages and currents intuitively with vector diagrams, making it easier for users to understand the actual meaning of each parameter subjectively.

11. Uses a 7-inch high-definition color screen to display data effects and vector diagram effects intuitively and delicately.

12. The test source used by this instrument is a digitally synthesized standard sine digital source, with distortion less than 0.1%, unaffected by the quality of the working power supply.

13. Easy to carry: small size, light weight, suitable for field operations. 

14. Optional internal rechargeable battery, no external power supply needed on site to complete the test work.

Safety Measures

1. Be sure to read this operation manual carefully before using this instrument.

2. The operator of the instrument should have general knowledge of electrical equipment or instruments.

3. This instrument can be used indoors and outdoors, but should avoid rain, corrosive gases, excessive dust, high temperature, and direct sunlight.

4. The instrument should avoid severe vibration.

5. Maintenance, care, and adjustment of the instrument should be carried out by professionals.

6. The yellow, green, and red test clips correspond to the A, B, and C phases of the transformer, do not connect them incorrectly.

7. Do not reverse the high and low voltage cables.

8. When measuring a single-phase transformer, only use the yellow and green clips, do not use them incorrectly, and unused test clips should be left hanging.





Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.