S11 series of low loss no excitation voltage distribution transformer Features: 1, the core is made of silicon steel strip rolled seamless nearly pure circular section is not graded. Iron yoke, join rounded core columns, the core is a closed shape. 2, high and low voltage coil wound directly around the core, a good two concentric coils, anti short circuit capabilities better. 3, due to the special structure of the core, but also showed the crystalline quality cold-rolled silicon steel sheet roll orientation annealed together, so S11-MR S9 type transformer with the same capacity decreased by 30% compared to the no-load loss, no-load current drops to 70% , noisy sound down about 8 db. 4, cancel conservator. Using corrugated board fuel tanks, oil volume changes in temperature caused by a resilient corrugated sheet adjustment transformer oil and air separation extend ordered. 5, using corrugated tank temperature small size, beautiful appearance. 6, the core of all mechanized processing, reduce labor intensity, improve product quality, stable quality.