... & SGPower Transformer,Dry type transformer,Three-phase Dry-type Power Transformer,Transformer,SG,DG DG and SG series Dry type ... proof and convenient maintenance,it can be applied to such power transmission and distributionplaces like underground railway,high building,airport,station,wharf ... ,enterprise,tunnel,etc.It is mainly used in power supply occasions of AC 50-60HZ and voltage less ...