List of ASTM D standards for dielectric strength testing of insulating oil:
1. ASTM D877- Electrodeposition method for testing the breakdown voltage and flashover voltage of liquid electrical insulating oil.
2. ASTM D1816- Gas gap method for testing the breakdown voltage of gas gaps in liquid electrical insulating oils.
3. ASTM D3426- Ultrasonic testing method for testing the tangent value of the dielectric loss angle and the relative dielectric constant of liquid electrical insulation oil.
4. ASTM D4308- Bridge method for testing the electrical properties of insulating oil soaked in solid electrical insulation materials, including resistivity and dielectric constant.
5. ASTM D4768- Corona discharge method for testing the corona occurrence voltage of liquid electrical insulating oil.
By using standardized testing methods, it can be ensured that the electrical performance of insulation oil meets the specified standards, thereby ensuring the safe operation of electrical equipment.