Transformer oil plays a crucial role in the performance and safety of transformers, acting as both a coolant and an insulator. Over time, contaminants like moisture, particles, and gases can degrade its insulating properties, leading to potential system failures. To ensure reliable operation, testing the Breakdown Voltage (BDV) of transformer oil is essential. A transformer oil BDV tester is the industry-standard tool for evaluating oil quality and ensuring transformer reliability.

What Is Breakdown Voltage (BDV)?

BDV measures the dielectric strength of transformer oil. It represents the maximum voltage the oil can withstand before electrical breakdown occurs. A high BDV indicates clean and effective oil, while a low BDV signals contamination and reduced insulating properties.

How Transformer Oil BDV Testers Work

A transformer oil BDV tester, such as the one offered by YUNENG, automates the BDV testing process to ensure precision and repeatability. The process involves:

1. Oil Sampling: Oil is collected and poured into the test chamber.
2. Voltage Application: A gradually increasing voltage is applied across electrodes immersed in the oil.
3. Breakdown Detection: The voltage at which the oil fails to insulate (breakdown) is recorded as the BDV.

YUNENG’s IEC Standard Transformer Oil BDV Tester complies with IEC 60156, ensuring consistent and accurate results.

Why Regular BDV Testing Is Important

1. Prevent Failures: Low BDV indicates poor insulating performance, which can lead to transformer breakdowns.
2. Extend Equipment Lifespan: Monitoring and maintaining oil quality can prolong the life of transformers.
3. Safety Assurance: Reliable BDV testing reduces the risk of accidents and electrical hazards.

Complementing BDV Testing with Oil Filtration

Low BDV results often signal the need for oil treatment. A Transformer Oil Filtration Machine is used to remove impurities like water, gases, and particulates, restoring the oil’s insulating properties. Together, BDV testers and filtration machines form an essential duo for transformer maintenance.