● Scientific calculation methods: Adopt advanced calculation software for electricity, magnetism, heat and mechanical force to calculate electromagnetic field and magnetic flux leakage distribution, conduct wave process analysis, select reliable insulation margin, and ensure reliable product performance.
● Reasonable structural arrangement: The iron core adopts a multi-stage step-lap full-tilt structure to reduce no-load loss and noise; the iron core is supported by round rods, and the coil adopts a hard paper tube to enhance short-circuit resistance; the coil adopts a baffle to guide the oil flow circulation and reduce coil temperature rise; special-shaped sheets are used to raise the heat dissipation center and reduce oil surface temperature rise; all internal insulating parts and metal structural parts are rounded to reduce partial discharge.
● Advanced process measures: Automatic shearing of iron core with high precision and small burrs, adopting non-lapping upper iron yoke process, surface coated with double H curing glue and bound; coil vertical winding with numerical control tensioning device; phase套装 process for the device body, and integral pre-assembly for leads; fully automatic controlled kerosene vapor phase drying process for the device body.
● Perfect quality assurance system: Strictly control product quality in accordance with ISO19001 quality system
● SSZ11-240000/220 transformer has passed the national full set of type tests and sudden short-circuit tests.
● According to user requirements, products with other voltage combinations, loss values, connection groups and capacities listed in the table can be provided.