Hainan Electric Hainan Wire & Cable Hainan Power Distribution Cabinet Hainan Water Pump Hainan Electric Complete Equipment
This method was first used by the British. The difference from other methods for measuring water content is that it is based on the principle that moisture will inevitably establish a humidity balance between oil and gas. The specific method is to put a semi-permeable tube into the oil, and the water in the oil enters a closed loop through the semi-permeable membrane of the tube. Because there is dried air in the tube, the partial pressure of water vapor in the loop increases continuously, so as to achieve the effect of balancing the partial pressure of water in the oil. Because the interface between the insulator and the oil in the distribution box is very large, it can be considered that the humidity between them is relatively flat and the test is not affected by the type, running time and temperature of the oil, so the drying degree of the insulator can be judged according to the relative humidity of the oil.