Detailed introduction to the functional characteristics of transformer short-circuit impedance tester

Transformer short-circuit impedance tester is a power equipment used to check whether the transformer winding is deformed, and can simultaneously measure the transformer short-circuit impedance and no-load current. The following is a detailed introduction to the device:

1. Main functions

① Measuring short-circuit impedance: By applying voltage to the primary side of the transformer and measuring the current flowing through the winding, the impedance is calculated based on Ohm’s law to determine the short-circuit impedance value of the transformer. This is a key indicator for evaluating the condition of transformer windings.

② Winding deformation detection: By comparing the short-circuit impedance values measured before and after the transformer is subjected to the impact of short-circuit current, the degree of winding deformation can be preliminarily estimated. This is of great significance for determining whether the transformer can be put into operation.

③ Measuring voltage, current, power, and frequency: The tester has these basic functions, which help to comprehensively understand the operating status of the transformer.

④ Data storage and export: The built-in memory can store measurement data for a long time and is equipped with independent printing and data import computer functions for subsequent analysis and reporting.

2. Technical features

① Single phase measurement mode: The tester adopts a single-phase measurement method, which only requires short circuiting on the low voltage side, and non test phases on the high voltage side do not need to be short circuited. After selecting the transformer connection, the short-circuit impedance of each phase can be automatically calculated after three measurements.

② Automatic conversion function: The tester has the function of automatically converting low current testing to rated current, which is suitable for on-site use.

③ Large screen LCD display: The tester adopts a large screen LCD display, with all Chinese menus and operation prompts, making the operation simple and intuitive.

④ Portable design: The tester has a small size and light weight, making it easy to carry to the site for testing.

3. Usage method

① Preparation stage: Ensure that the tester is fully charged, connect the power supply and testing cable, turn on the power switch to enter the testing state.

② Wiring operation: Connect the test wire to the corresponding terminals of the instrument panel and transformer according to the testing requirements.

③ Parameter setting: Select the test item in the main menu state and enter the corresponding test parameters.

④ Test execution: Start the measurement and enter the data measurement interface, observe the stable voltage and current values, and record the data.

⑤ Result recording: On the measurement result display interface, select the storage medium and save the test data.

4. Precautions

① Safe operation: Before using the tester, it is necessary to carefully read the instructions and familiarize oneself with the various functions and operating methods of the instrument. Attention should be paid to safety during testing to avoid dangerous situations such as electric shock.

② Environmental requirements: The tester should be used within the specified operating temperature and humidity range to ensure the accuracy of measurement results.

③ Regular maintenance: The tester needs to be regularly maintained and calibrated to ensure its long-term stable operation.

5. Application scenarios

Transformer short-circuit impedance tester is widely used in power systems, power plants, substations and other places, for measuring low-voltage short-circuit impedance of 35KV and above main transformers, as well as detecting winding deformation. It is of great significance for determining whether transformers can be put into operation and preventing electrical faults.

In summary, the transformer short-circuit impedance tester is a powerful, easy to operate, safe and reliable power equipment, and an ideal tool for power personnel to conduct transformer testing.

ZC-204B Transformer Short Circuit Impedance Tester is an instrument specifically designed for measuring low voltage short circuit impedance of transformers under on-site and laboratory conditions. The instrument comes with an adjustable power output, which is particularly suitable for on-site operation of 110kV and above main transformers. Short circuit impedance test is the most direct method to identify whether the winding of a transformer is deformed after being impacted by short-circuit current during operation or mechanical force during transportation and installation. It is of great significance for determining whether the transformer can be put into operation and is also one of the basis for determining whether disassembly inspection is required for the transformer.

Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com