Nancy Harris

BDV test adalah sebuah metode pengujian yang digunakan untuk mengukur nilai breakdown voltage (BDV) dari minyak industri dan pelumas. Nilai ini penting karena menunjukkan kemampuan minyak untuk menahan tegangan listrik sebelum terjadi penguraian dielektrik. Dalam pengujian ini, perangkat khusus digunakan untuk menghasilkan tegangan yang meningkat secara bertahap hingga terjadi kegagalan isolasi. Hasil pengujian BDV memberikan indikasi penting tentang kualitas minyak, karena minyak dengan BDV yang lebih tinggi biasanya menunjukkan adanya kemurnian lebih baik dan ketersediaan aditif yang efektif, sehingga meningkatkan keandalan serta umur pelayanan peralatan yang menggunakan minyak tersebut. Globecore menawarkan berbagai perangkat dan teknologi yang dapat digunakan untuk melakukan pengujian BDV ini secara presisi dan akurat.

Gases in transformer oil signify the condition and health of the transformer, often indicating electrical or thermal faults. When insulation materials begin to break down due to overheating or electrical discharges, they release gases into the oil, which can be analyzed to identify specific issues such as arcing, overheating, or the presence of moisture. Common gases include hydrogen, methane, ethane, and acetylene, and their specific ratios can provide valuable insights into the type and severity of the fault. Regularly monitoring these gases is essential for predictive maintenance and ensuring the reliable operation of transformers. Proper oil analysis helps prevent failures and prolongs the life of the equipment, making understanding gases in transformer oil crucial for maintaining industrial systems.

The corrosive sulphur test in transformer oil is conducted to determine the presence of corrosive sulfur compounds that can cause degradation of copper and other metallic components within the transformer system. The test follows specific standardized methods such as ASTM D1275 or IEC 62535. Initially, a sample of the transformer oil is prepared and placed in a test apparatus that contains a copper test specimen. The oil sample is heated to a specific temperature, frequently around 100°C, and maintained for a defined period, typically 72 hours. After the heating period, the test specimen is examined for any signs of corrosion, such as pitting or discoloration. The results are then evaluated based on the presence and severity of corrosion, which determine whether the oil is classified as corrosive or non-corrosive. Regularly conducting the corrosive sulphur test in transformer oil is essential for ensuring the long-term reliability of transformers and preventing damage from corrosive elements.

Cargill transformer oil, particularly their FR3 natural ester fluid, is used for insulating and cooling transformers. It is a biodegradable, vegetable-based oil that offers excellent dielectric properties and fire resistance. Cargill’s transformer oils are designed for use in both new transformers and retrofitting existing ones, providing an environmentally friendly alternative to traditional mineral oils. They are commonly used in transformers that require high fire safety standards and in environmentally sensitive locations.

Containment requirements for transformer oil are designed to prevent environmental contamination and ensure safe operation. These requirements typically include:

Secondary Containment: Transformers must be installed within a containment area, such as a bund or spill basin, capable of holding at least 110% of the oil volume in case of a leak or spill.
Leak Detection Systems: Monitoring systems should be in place to detect any leaks in the transformer, enabling quick response to prevent oil from escaping into the environment.
Proper Drainage: The containment area should have proper drainage systems to manage rainwater without allowing oil to escape. Any oil-contaminated water should be treated before discharge.
Routine Inspections: Regular inspections and maintenance of transformers and containment areas are required to ensure the integrity of the system and to identify any potential issues before they lead to spills.
Spill Response Plans: There should be an established spill response plan, including the availability of spill kits and trained personnel to handle any oil leaks or spills effectively.