Project Description
The handheld transformer turn ratio test set is an innovative product. 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 notes 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, 11 are the same value, the handheld transformer ratio tester should enter 9 when inputting 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 tap position of the handheld transformer ratio tester is set according to 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 reversed.
The transformation ratio on the nameplate of a three-phase transformer refers to the ratio of the line voltage of the windings of different voltages. Therefore, the transformation ratio and the turns ratio of the transformer with different wiring methods have the following relationship: the primary and secondary side wiring of the three-phase transformer 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.
