从标准以及油品性质方面比较了低温开关油与变压器油的差别.与变压器油相比,低温开关油的链烷烃含量高,在强电场作用下容易发生脱氢反应,生成小分子物质以及氢气,这一特性对设备熄弧有利;低温开关油具有优异的导热系数,因此油品在开关设备中的散热冷却更有效;低温开关油具有较低的运动黏度,油品的流动速率较快,有利于开关设备的开断与关合性能;具有较低的闪点,因此具有较高的气化率和蒸发率,提高了灭弧能力.%Low temperature switching oil and transformer oil were compared in terms of standard and product properties. The results show that the paraffin content in low temperature switching oil is higher than transformer oil,dehydrogenation is easy to occur for the switching oil in a strong electric field,generating small molecules and hydrogen,this feature is extremely advantageous to the arc extin-guishing;Switching oil has excellent thermal conductivity,therefore,the cooling of oil is more effec-tive. Switching oil has low viscosity,resulting in faster flow,so it's good for the on-off and off. Switching oil has low flash point,so it has higher gas rate and evaporation rate,which improves the arc extinguis-hing ability.
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