No partial discharge test transformer

Partial Discharge Test Transformer is an important equipment in power systems used for conducting partial discharge tests under high voltage and high current conditions. It plays a crucial role in ensuring the safe operation of power equipment and is known as the silent guardian of energy release.

The test transformer adopts special design and manufacturing technology to meet the requirements of long-term continuous operation under high voltage and high current. It has * energy transfer capability and stable output characteristics, which can provide stable high voltage and high current to the tested object, ensuring its reliability under actual working environment conditions. At the same time, the test transformer also has low internal losses and temperature rise to ensure the accuracy and stability of the testing process.

In the process of non partial discharge testing of power equipment, the test transformer plays a crucial role. By applying high voltage and high current, it can simulate the voltage and current load of the equipment during operation, thereby revealing potential defects and faults. The test transformer can detect and record partial discharge phenomena in the equipment, namely weak discharge signals. These weak signals may be caused by insulation material damage, contamination, or design defects. If not detected and processed in a timely manner, they will have a serious impact on the safe operation and lifespan of the equipment.

Compared with traditional transformers, test transformers also have higher electrical performance and more reliable operating characteristics. It adopts high-quality insulation materials and structural design to ensure electrical insulation performance and durability under high voltage and high current conditions. In addition, the test transformer is equipped with a monitoring system and safety protection measures, such as overcurrent protection, over temperature protection, etc., to ensure the safety and reliability of the testing process.

With the continuous development of power equipment and technological innovation, test transformers are also constantly evolving and improving. The new experimental transformer adopts digital control and automated operation, which improves testing efficiency and accuracy, and has remote monitoring and data transmission functions, making it convenient for users to conduct real-time monitoring and analysis.

Technical parameters of transformer without partial discharge test:

1. Partial discharge capacity (insulated cylinder type)

A. 10-200KV rated voltage (UH), local discharge capacity ≤ 3-5Pc at 100% UH

B. 250-300KV rated voltage (UH), local discharge capacity ≤ 5Pc at 100% UH

C. 350-750KV rated voltage (UH), local discharge capacity ≤ 5Pc at 80% UH, ≤ 10Pc at 100% UH

D. 800KV~1500KV rated voltage (UH), local discharge capacity ≤ 10Pc at 80% UH

2. Cascade test transformer, uneven voltage distribution between two or three sections ≤ 5%

3. Allowable operating time: The test transformer can run for 30 minutes from ambient temperature at rated voltage and current, and can run continuously at two-thirds of the rated voltage and current

4. The impedance of a single test transformer is 3% to 12%, and the impedance of a series connection is 5% to 25%

5. Waveform distortion rate<3%

6. The remaining parameters comply with the provisions of JB/T9641-1999<<Test Transformer>>

Selection parameters: