Structural characteristics of intermediate frequency furnace transformer

Iron core: The material performance is not lower than 30ZH120 cold-rolled silicon steel sheet; the 3-phase 3-column plane is symmetrically constructed with a balanced 3-phase magnetic circuit; Tight; the iron core frame is vacuum annealed to eliminate stress and improve electromagnetic performance; the surface of the iron core is coated with epoxy resin paint, moisture-proof and cured.

Winding: paper-coated copper flat wire or QQ-2 acetal enameled round copper wire made of low-oxygen copper material; low-voltage coil is double-layer or 4-layer round copper type or new spiral type, or foil type. High-voltage coil is multi-layer round copper wire Cylinder type; the coil oil channel is corrugated structure, and the interlayer insulation is double-sided adhesive tape; the low-voltage and high-voltage surfaces are wrapped with epoxy resin semi-adhesive glass fiber tape to increase mechanical strength. Iron yoke insulation; balanced spacer insulation made of laminated wood; laminated cardboard as lead bracket; all fasteners are effectively locked lock nuts.

Oil tank: a fully sealed corrugated oil tank with triangular structure, and corrugated sheets are installed in all 3 phases to ensure heat dissipation and compensate for the expansion and contraction volume of oil volume changes due to changes in oil temperature; the tank cover is equipped with an oil level gauge with a pressure release valve It is easy to refuel and check the oil level, and to release the pressure for safe maintenance when the internal transformer is suddenly faulty and overvoltage.