| 摘要 |
Post type oil filled current transformers dissipate heat into the surrounding air. However, the oil column being of small diameter does not circulate freely and does not transfer the heat sufficiently from the windings to the surface of the enclosures which is usually a porcelain insulator. It is desirable to increase the flow of fluid withing the transformer. This increase can be obtained by introducing a flow controlling tube within the primary conductor which is vertical and hollow. The inserted tube defines two coaxial paths permitting flow of cool fluid down the central path within the tube and an upward flow of heated fluid in the outer annular path. |
