The short-circuit impedance method is a traditional method for determining winding deformation. According to GB1094.5-2003 and IEC60076-5:2000, the change in short-circuit reactance is the only criterion for determining whether the transformer winding is deformed. The circuit design of this instrument is exquisite, with unique ideas, superior performance, small size, light weight, and easy on-site use. The instrument adopts advanced synchronous AC sampling and digital signal processing technology internally, with accurate and reliable measurement data. It is an effective tool for transformer detection and analysis, and can also be used for impedance measurement of equipment such as reactors and transmission lines.

Main functions and features

1. Can measure transformer short-circuit impedance, short-circuit reactance, short-circuit resistance, three-phase impedance voltage.

2. It can display parameters such as voltage, current, power, frequency, etc. for each test.

3. Measurement can be completed using only a single-phase 220V AC power supply. In the absence of an AC power supply, a low-power UPS power supply can be used (considering the power capacity based on the test current).

4. The wiring operation is simple and convenient, and can be used with single-phase or three-phase test power supplies.

5. Automatic frequency correction can eliminate errors caused by frequency fluctuations.

6. This instrument can store 100 measurement results and has a built-in power-off memory that can store measurement data for a long time.

7. Large screen LCD display, all Chinese character menus and operation prompts, intuitive and convenient.

8. Non power off calendar, clock function.