How does a BDV insulating oil tester work?

A BDV insulating oil tester, or Breakdown Voltage Insulation Tester, operates by determining the breakdown voltage of dielectric liquids, particularly insulating oils. It works by applying a high voltage across two electrodes submerged in the oil sample. As the voltage increases, the tester monitors the oil’s resistance to electric breakdown. Once the voltage reaches a critical level, the oil will fail, causing a dielectric breakdown, which is indicated on the device’s display. This value is significant as it helps in assessing the oil’s insulating properties and overall quality, ensuring that it meets the standards required for safe and efficient operation in electrical equipment. Proper use of a BDV insulating oil tester can effectively reveal any deterioration in the oil due to contamination, moisture, or other degradation factors, assisting in preventive maintenance and equipment longevity.