1. Classification of refrigerant oil One is traditional mineral oil; The other is a synthetic polyol ester oil such as PO, often called polyester oil is also a synthetic poly (b) diol lubricating oil, their Chinese name is not very unified. POE oil can be used not only in HFC refrigerant system,

Dielectric loss is the sum of polarization loss and conductance loss caused by transformer oil under the action of alternating electric field. Dielectric loss factor can reflect the transformer insulation characteristics, reflect the transformer oil in the electric field, oxidation and high temperature under the action of aging degree, reflect the degree of polarity impurities and charged colloid pollution in the oil. In the process of long-term use of transformer, the operation condition of transformer oil can be reflected by medium loss factor test. 1. Analysis of causes for excessive dielectric loss 1. Influence of impurities. Dust and other impurities exist in the oil or solid insulation materials of the transformer during installation. After running for a period of time, colloidal impurities gradually precipitate out. Colloidal particles are small in diameter and diffuse slowly, but have a certain amount of active energy. Particles can automatically coalesce, from small to large,

What are the models of oil filters? Read my introduction, I believe you will know more about it. I.Transformer insulation oil vacuum oil filter 1. The letters ZJB-100 stand for single-stage vacuum oil filter, and the flow rate is 100L/min. This kind of vacuum oil filter is used to purify abnorma