S11 type three-dimensional coil iron core distribution transformer capacity range 30-2500KVA. The iron core is a three-phase three-column type inner and outer frame winding structure. High degree of mechanization, large lamination coefficient. High and low voltage coils are continuously wound on the iron core column, with good concentricity and tight coils. The main technical and economic indicators have reached the international advanced level of congeneric products.
S11 series coiled iron core distribution transformer has low loss, and the load loss is the same as that of the new S11 stacked iron core distribution transformer. Compared with GB/T6415-20081, its no-load loss is reduced by an average of 20%. The main material consumption is less and the weight is light. The no-load current is small, and the magnetic flux is completely arranged along the crystal lattice direction of the cold-rolled silicon steel sheet. The noise is low, and it is reduced by about 3-5dB compared with the standard value of JB/T10088-2004. The anti-short circuit ability is strong and the reliability is high. The clamp mainly plays the role of tensioning the winding. The iron yoke insulation is integrated with the trapezoidal spacer block, so that the body is uniformly pressurized. Iron core: 30Q120 cold-rolled silicon steel sheet is adopted. The three-phase column is rolled with the inner and outer frames, and the core column is a multi-step stepped cylindrical section. The The pull screw of the upper and lower clamps tightens the body of the device. The surface of the iron core is coated with epoxy resin to ensure that the iron core is not deformed or rusted. Winding and body: The low-pressure winding is a four-layer (or double-layer) cylindrical type with 1-6 wires coiled in parallel, and a paper-wrapped flat copper wire is used. The high-pressure winding is a multi-layer cylindrical type with good impact distribution, and a high-strength acetal lacquer-wrapped round copper wire is used. The coil is directly wound on a rotating die composed of a gear plate and a soft paper tube stuck on the iron core column. The iron yoke insulation is integrated with a trapezoidal spacer block to make the body evenly pressed. A new type of hanging plate positioning structure is adopted to position the device vertically and horizontally to ensure that the device body is stable and not displaced. Fuel tank: mainly a corrugated fuel It can also be designed as a rectangular piece radiator tank.