Our factory’s H Grade Non-encapsulated insulation three-phase dry type transformer is manufactured with NOMEX insulation material which approbated by UL, and has many advantages of safe, reliable, energy-saving, fire-proof, explosion-proof, easy to maintain. Its design is advanced, structure is reasonable, appearance is pretty. Meanwhile, its main performance are superior to domestic standards, such as partial discharging level, no-load loss, with-load loss, low noise and can work under conditions with high damp, etc. It can be installed in areas with large load, be suitable for high-rise buildings, airports, railway stations, docks, subways, hospitals, electricity factories and so on.
Characteristics of H Grade Non-encapsulated dry type transformer:
1,The elaborate designed coil structure and vacuum immersed treatment enable SG(B)10 transformer’s partial discharging volume be very small, less than or equal to 5pc. No crack performance will be found during the whole service life, and its insulation level will be kept as good as beginning .
2.The high voltage part adopts continuous wire winding. LV foil winding, vacuum immersed, curing processed and high strength ceramics supporting, with fine withstand capability to paroxysmal short-circuit current
3.Flame resisting, flameproof, nontoxic, self-extinguishing, fireproof.
4. When burn in high temperature and open fire, almost no fume will be produced
5. Insulation level of the transformer is H grade
6.The insulation layer is very thin, with strong shorttime over load capability, needlessof forced cooling, can be overloaded for 120% for long term and 140% for 3 hours.
As this kind of insulation material has elasticity and will not be aged, it can be full loaded at once under suitable conditions.
Sheet 1, Basic performance parameter of SC(B)10 series 10kV 30-2500kVA air insulation dry type transformer
|Rated voltage of H.V:10(11,10.5,6.6,6.3,6,3.15)±2x2.5% or±5%kV;Rated voltage of L.V:0.4kV, vector group:Dyn11 or Yyn0;three-phase|
|Model||Po(W)||PK(75°C)||Uk(%)||Io(%)||Lp dB(AN)||GT (kg)||Outline|
Note: (1) the outline dimensions are just for reference, the final dimensions are subject to the actual outline of products.
(2) outline dimensions with casing do not include small wheels’ size, but can provide small wheels according to customers’ request( size extra)
(3) As customers’ request, we can provide IP20 and IP23 casing for SG10 transformers, same as resin insulation dry type transformers.