... -2008 3 One year warranty 4 MOQ:1 set 3D H Grade insulation step down transformer Product introduction SGB9/ ... hydropower stations, thermal power stations, iron & steel plants, chemical engineering, mines and other high-temperature or polluted areas. Product characteristics ... , transport, storage and rnning. At the expiry of the service life, SGB10/11 products can be decomposed and tecycled, satisfying ...