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power transformer, RMU, electric components, oil immersed transformer, ring main unit, Manufacturer and Supplier - China(CN)
66KV Oil Immersed Power Transformer (SF9)
Structure and characteristics:
I. The core is made of high-quality cold-rolled grain-oriented silicon-steel, inserted at 45 degree, in 3 steps. Core stem and yoke are in multi-stage round section for small idle loss and low noise.
II. according to the size of transformer capcity, HV and LV wirings can be in cylindrical type, continuous type or interleaved type. Effective measures are taken in the structure and process of different wiring insulation strength and mechanical strength, to ensure safe and reliable operation.
III. Each transfoemer is equipped with tapping switches with non-excitation regulating range 5%;22.5% and loaded regulation range 81.25%. other tapping ranges are available on request.
IV. the oil tank is welded with different types of steel according to mechanical strength. Flat top bell type structure is adopted for a capacity larger than 8000kVA. Cylindrical structure is for a capacity smaller than 8000kVA. The whole unit is compact with reasonale cooling effect, guaranteeing the temprature controlled within rated range during full load operation.
V. Accessories include: HV sleeve, LV sleeve, mercury thermonmeter, oil refilling and draining valve, oil storage, grounding bolt, hanging tag and name plate, etc.. Gas relay and presure relief valve ar available for units larger than 800KVA, singal thermometer for units larger than 1000kVA and remote temprature detector for units larger than 8000kVA.
Technical specifications:
66kV Oil-immersed Power Transformer HV(kV):63,66,69; LV(kV):6.3, 6.6,10.5,11
Connection symbol:Yd11; Tapping range: 5% or 22.5%
