Product Description

Transformer as the most widely used electric power facilities,  are in abundance and wide variety., has important meaning for energy saving and emission reduction.S11 oil immersed transformer are main selection products in the power distribution equipment, energy-saving effect is remarkable.



In China ,performance code of distribution transformer’s meaning is: above type S7, no-load loss reduce per 10%, code "7" add "1" on it.From type S7 to type S9, reduce more load loss,average is 25%. Later, because no breakthrough new material, new technology, reduce distribution transformer’s load loss is difficult, the performance level code normally use no-load loss reduce as a standard. Take a 400KVA S11 oil Immersed transformer as example, type S7’s no-load loss is 920W ,and type S11’s no-load loss is570W, decrease by 38%.



At present, mainstream transformer general selection S11 type laminated core transformer .Adopt full filling oil sealed, no oil storage tank,corrugated plate box structure. The transformer as the change of temperature and load leading oil’s temperature and volume changes ，this entirely by corrugated tank to adjust, the no-load loss lower 25% than S9, Good lightning impulse resistant and good ability to withstand short circuit, remarkable energy-saving effect, and reduces the appearance of transformer size.S11 type transformer use high permeability oriented silicon steel sheet , thickness 0.27 -0.30 mm, iron-loss per unit weight is 1 w/kg.And the new S9 type use common silicon steel sheet, thickness is 0.30-0.35 mm, iron-loss per unit weight is 1.20-1.55w/kg.Our S11 oil immersed transformer use Shanghai Baosteel steel 30P series high permeability oriented silicon steel, adopted foil coil and a new insulating materials, Our product high temperature resistance, shock resistance, fully sealed structure design to ensure the stability of the transformer oil quality, prolong the maintenance period, at the same time, This transformer integral tank made of corrugated plate radiator and multilayer rust protection coating process production, has a good weathering resistance.

Technical standards:

GB1094.1.2.3-2007《Power transformer》

GB/T6451-2009《Specification and technical requirements for oil-immersed power transformers 》

GB/T10237-1988《Power transformer Insulation level and outside insulation test air gap of the insulation 》

JB/T3837-1998《Identification method of transformer's product type》

Performance feature

10KV S11 oil immersed transformer capacitance range 30KVA~2500KVA, in the10KV 50HZ power distribution system, Be widely used in high-rise buildings, commercial center, subway, airport, station, industrial and mining enterprises, drilling platform, production platform,also available for residential, commercial street and rural power and lighting purposes.