Huazheng Electric Manufacture HZ2612 Transformer Short Circuit Impedance Tester

【Overview of Instrument】

The power transformer occurs in the turbine, the short circuit between the turbine, the phase, or the collision during transportation during the test, causing the relative displacement of the coil, and the deformation of the coil due to electromagnetic pulling force during the short circuit and failure during the operation. The parameters change, which affects and changes the original impedance characteristics of the transformer.

Article 15.2 of the [2000] Document No. 589, "No. 589" issued by the National Electric Power Corporation clearly stipulates that "110kV and above voltage -level transformers should do low -voltage and short -circuit impedance tests before the factory and put into production Or use the frequency response method to retain the original record. "15.6 stipulates that" the transformer should do low -voltage short -circuit impedance testing or use frequency response test winding by the short -circuit short circuit in the near area, and compares it with the original records. It can be carried out after judging the transformer without failure. "The low voltage impedance test can accurately reflect the changes in the impedance value of the transformer before and after the winding. "DL/T1093-2008 Electric Reactor Detection Detection Detection Detection Detection Detection and Detection Detection Detection Detective" stipulates that: low-voltage test power measured power transformers winding and iron core dynamic stable state parameters can be used on the spot to determine that there is no deformation or displacement of the transformer winding or displacement Essence Determine the dynamic stability of the transformer winding and iron heart. The guidance shall specify or prompts the detection timing, detection parameters, detection methods, testing instruments, judgment principles, and judgment.

This product uses voltage current synchronous sampling, high -speed digital signal processing, and accurate measurement data. The instrument can use the internal output power power or external power supply. It is measured by item by item. The three -phase transformer can be manually or automatically measured. The data can be stored in the internal memory for a long time. The instrument with a data printing function.

【Performance Features】

1. The technical performance is completely in line with the technical conditions of the national standard DL/T1093-2008 "Director of the Electric Relics Detection and Judgment of the Transformers Winds Wind Wind by Winding";

2. Use two modes of internal and external power supply. The internal power supply provides 24V and 220V. In order to prevent the short -circuit current from being too large, the 24V gear should be selected for the first test. When the test current is less than 1A, you can choose the 220V gear;

3. Use high -performance embedded processing chips, digital narrow belt filtering and other technologies to effectively suppress industrial frequency and high -frequency interference;

4. Use three -phase wiring to measure the phase, only the low voltage side is needed, and the three phases are connected at one time at a time.

5. The measurement process can be used for manual measurement and automatic measurement. The first test can adopt a manual measurement mode to test the current voltage of the measurement measurement; automatically measures the measurement and calculation automatically;

6. In the measurement process, obtain voltage, current, frequency, effective power, short -circuit impedance, short -circuit electrical resistance, leakage inductance, etc.;

7. Support test data generation printing output;

8. Short -circuit protection to ensure that the instrument is not damaged in the case of short circuit during wiring.