Oil Cup Cleaning Tips for Oil Dielectric Loss Tester:
1. After disassembling all measuring electrodes, thoroughly clean all parts sequentially with chemically pure petroleum ether (distillation range 60-90°C) and benzene;
2. Then rinse all parts with acetone, followed by cleaning with a neutral detergent.
3. Boil all parts in a 5% trisodium phosphate distilled water solution for 5 minutes, then rinse several times with distilled water;
4. Boil all parts in distilled water for at least 1 hour;
5. Dry all parts in an oven (85-110°C) for no less than 40 minutes;
6. When all parts have cooled to a point where they are not hot to the touch, assemble the measuring electrodes. Note that during assembly, wrap each part with a clean silk cloth and avoid direct hand contact. After assembly, measure the dissipation factor of the empty electrodes. At power frequency 2kV, it should not exceed 5×10⁻⁵; otherwise, clean again.
