Lub S11, S13, S20, S22-M series tag nrho ntim roj-immersed fais fab transformer tsim thiab tsim los ntawm peb lub tuam txhab muaj qhov zoo ntawm kev poob qis, tsis tshua muaj suab nrov thiab kev ua haujlwm siab, uas tuaj yeem ua tiav cov txiaj ntsig zoo txuag hluav taws xob thiab txo cov pa phem. Fully sealed transformer and ordinary oil-immersed transformer, compared with the elimination of the oil storage cabinet, oil volume changes by the corrugated oil tank corrugated sheet of the elasticity of the automatic adjustment to compensate for the transformer isolated from the air to prevent and slow down the deterioration of the oil and the aging of the insulation, enhance the reliability of the operation, the normal operation of maintenance-free.