S9-M-30 ~ 3150/10 series three-phase oie-immersed no on-load-tap-changing one distribution transformer
SZ9-M-200 ~ 2500/10 series three-phase oil extraction distribution transformer on-load changer
SZ11-M-200 ~ 2500/10 series three-phase oil extraction distribution transformer on-load changer
10KV power transformer oil level immersion type