This multifunctional ratio tester is designed for three-phase transformers in power systems, especially Z-type winding transformers, rectifier transformers, and Scott, inverse Scott, and balance transformers in railway electrical systems.

The multifunctional ratio tester inputs a single-phase power supply, generates a three-phase or two-phase power supply through an internal power module, outputs it to the high voltage side of the transformer, and then samples both high and low voltage simultaneously. Finally, the group, ratio, error, and phase difference are calculated.The multifunctional ratio tester adopts a large screen LCD display, full Chinese menu and Chinese character printing output. The instrument has a built-in user manual that can be accessed at any time. The instrument can be directly controlled by the upper computer through the USB port to complete operations such as setting, measuring, uploading, saving, and printing data. The instrument is very easy to operate and is an ideal transformer ratio group polarity tester for power systems, transformer manufacturers, and railway electrical systems.

Product nickname: Transformer Ratio Group Tester, Transformer Ratio Tester, Transformer Ratio Fully Automatic Tester, Fully Automatic Multifunctional Ratio Tester, Transformer Ratio Group Measuring Instrument, Transformer Ratio Measuring Instrument, Transformer Ratio Fully Automatic Measuring Instrument, Transformer Ratio Tester.

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1. True three-phase testing: single-phase power input, internal digital synthesis of three-phase standard sine wave signal source, through high fidelity power amplifier, generating three-phase test power output (distortion less than 0.1%, symmetry better than 0.05%), the test results have better equivalence, and there will be no group misjudgment or other phenomena;

2. Powerful function: It can perform single-phase measurement and automatic testing of three-phase windings. Both single-phase and three-phase can measure polarity and phase angle. It can complete the measurement of AB, BC, CA three-phase transformation value, phase angle value, error, tap position, tap value and other parameters in one go, and can automatically identify the group number;

3. Phase angle measurement function: accurately measure the phase angle between the high and low voltage sides, and can measure the transformation ratio and angle of non integer point transformers;

4. Hexagonal diagram display function: The test results are displayed in numerical and hexagonal vector diagrams, which intuitively show the connection group of the transformer;

5. Blind testing function: No need to select the wiring method or wiring group, measuring Y/△ and △/Y transformers does not require external short circuiting, and the wiring method can be automatically switched according to the selected testing content. It is entirely possible to measure the transformation ratio and group number of transformers without nameplates;

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

7. At the same time, it has two functions: measuring the turns ratio and measuring the operating voltage transformation ratio. The operating transformation ratio can more accurately reflect the actual value of the voltage transformation ratio of the transformer in actual operation;

8. Good anti vibration performance: The use of military connectors enhances the anti vibration performance;

9. Adopting a 5.6-inch high-definition true color LCD screen, the display of data and vector graphics is intuitive and delicate;

10. The test source used in this instrument is a standard sine digital source synthesized digitally, with a distortion of less than 0.1%, and is not affected by the quality of the working power supply;

11. Convenient to carry: small size, light weight;

12. High capacity lithium-ion rechargeable batteries can be optionally installed, which can complete testing work on site without any power supply. One full charge can perform more than 800 consecutive measurements;

Precautions for multifunctional ratio tester:

1. Before measurement, ensure that the tested equipment is in a power-off state and that all test terminals are not grounded;

2. The measurement wiring must be strictly operated according to the instructions, otherwise the consequences shall be borne by oneself;

Before testing, it is necessary to carefully check whether the set parameters are correct;

4. It is best to use a grounded power socket when charging;

5. Do not work under excessive limits;

6. It is strictly prohibited to connect high and low voltage in reverse;