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The handheld transformer ratio tester is an innovative product. It also call transformer turn ratio test set. The product is small in size, hand-held operation, lighter and easier to carry. Hand-held transformer ratio tester is mainly used for transformer ratio group test, PT, CT ratio polarity test, with fast test speed and high accuracy. At the same time, please carefully check the precautions of the handheld transformer ratio tester.
The precautions for the handheld transformer ratio tester are as follows:
The precautions for the handheld transformer ratio tester are as follows:
For transformers with multiple tap positions, input the rated high and low voltage voltage values, tap spacing, and rated gears so that the test results can automatically calculate the error value and the tap position where the tap switch is located.
For transformers with 19-level on-load tap changer, if the taps of 9, 10, and 11 are the same value, input 9 when the handheld transformer ratio tester inputs the rated tap position. At this time, after the 12 tap position, the handheld The transformer ratio tester shows that the tap position is 2 smaller than the actual position.
The setting of the tap position of the handheld transformer ratio tester is based on the high-voltage side voltage regulation design. It is assumed that 1 tap is the highest and high-voltage gear. If the voltage is reversed or the tap switch is on the low-voltage side of the transformer, the tap is displayed. The position and the actual tap position are inverted.
The transformation ratio on the nameplate of a three-phase transformer refers to the ratio of the line voltages of the windings of different voltages. Therefore, for transformers with different wiring methods, the transformation ratio and the turns ratio have the following relationship: the three-phase transformer with the same primary and secondary wiring The voltage ratio is equal to the turns ratio; when the primary and secondary wiring are different, the turns ratio of the Y-d wiring is equal to the transformation ratio value divided by the WeChat picture_20210120110018.png, and the turns ratio of the D–y wiring is equal to the transformation ratio multiplied by the value WeChat picture_20210120110018.png.
In addition to the precautions for the handheld transformer ratio tester, the operation instructions of the handheld transformer ratio tester should also be carefully read the instruction manual. Litai Power is the source manufacturer of handheld transformer ratio testers, with a wide range of products and complete functions. Welcome to buy.
