It is available in three configurations, including power supply board only, a board with a plug-intransformer, or a board with an enclosure and a plug-intransformer.
它有三种配置，包括电源板，插件变压器板和一个插件变压器。
2
Range hypothesis vent plug and tube joint is not correct, then in the transformer oil injection will constitute a bubble chamber.
假设放气塞和管接头的方位不正确，那么在变压器注油以后会构成气泡腔。
3
You need to plug the transformer into a GFCI protected outdoor electrical outlet fitted with a 'while in use' cover.