What is the significance of volume resistivity of hydraulic oil filter to production operation
2018/5/17 Viewers:
As an insulating oil of liquid insulating medium, how to identify its insulation performance is usually determined by its breakdown voltage and dielectric loss factor. But the breakdown voltage and dielectric loss factor of the oil, to a great extent, depend on the pollution of the external water and other impurities, and can be removed by the means of purification. Therefore, in recent years, some advanced countries have taken the measurement of the volume electrogram of insulating oil as one of the important indicators to identify the insulation properties of oil, so as to evaluate the electrical properties of the insulating oil.
(1) the volume resistivity of transformer oil is of great significance in judging the insulation characteristics of transformer. The insulation resistivity of the pure new oil is very high. After installing the transformer, the insulation characteristics of the transformer are not affected. On the contrary, if the volume resistivity of the transformer oil is low, the insulation characteristics of the transformer will be affected. The lower the resistance of oil, the greater the effect.
(2) the volume resistivity of oil can reflect the extent of aging and contamination of oil to some extent. When the oil is dampened or mixed with other impurities, the insulation resistance of the oil will be reduced. The insulation resistance of the aging oil will be affected by a series of oxides due to the production of a series of oxide in the oil. The deeper the oil is, the greater the influence. (3) generally speaking, the volume resistivity of electric oil is high, the dielectric loss factor of its oil is very small, and the breakdown voltage is high. Otherwise, on the contrary.
(4) the volume resistivity of the insulating oil is the most sensitive to the ion conduction loss of the oil. Both the acid and the neutral oxide can cause significant changes in the resistivity, so the oil quality can be reliably and effectively monitored by the measurement of the volume resistivity of the oil.
(5) the measurement of the volume resistivity of insulating oil (with dedicated instruments) is more accurate than the breakdown voltage and is simpler than the dielectric loss factor. Therefore, more and more countries have set the volume resistivity as an index to evaluate the quality of insulating oil.
(1) the volume resistivity of transformer oil is of great significance in judging the insulation characteristics of transformer. The insulation resistivity of the pure new oil is very high. After installing the transformer, the insulation characteristics of the transformer are not affected. On the contrary, if the volume resistivity of the transformer oil is low, the insulation characteristics of the transformer will be affected. The lower the resistance of oil, the greater the effect.
(2) the volume resistivity of oil can reflect the extent of aging and contamination of oil to some extent. When the oil is dampened or mixed with other impurities, the insulation resistance of the oil will be reduced. The insulation resistance of the aging oil will be affected by a series of oxides due to the production of a series of oxide in the oil. The deeper the oil is, the greater the influence. (3) generally speaking, the volume resistivity of electric oil is high, the dielectric loss factor of its oil is very small, and the breakdown voltage is high. Otherwise, on the contrary.
(4) the volume resistivity of the insulating oil is the most sensitive to the ion conduction loss of the oil. Both the acid and the neutral oxide can cause significant changes in the resistivity, so the oil quality can be reliably and effectively monitored by the measurement of the volume resistivity of the oil.
(5) the measurement of the volume resistivity of insulating oil (with dedicated instruments) is more accurate than the breakdown voltage and is simpler than the dielectric loss factor. Therefore, more and more countries have set the volume resistivity as an index to evaluate the quality of insulating oil.
- Pre：China's hydraulic oil filter o 2018/5/17
- Next：What should be noted for volum 2018/5/17