8000 KVA 3-Phase Oil Filled OLTC Power Transformer

The product complies with national standards GB1094 Power Transformer and GBT6451 Three-phase Oil-immersed Power Transformer Technical Parameters and Requirements.
GB/T6451 Technical Parameters and Requirements for Three-Phase Oil-immersed Power Transformers.
Technical Parameters and Requirements of Three-phase Oil-immersed Power Transformers”. The product has adopted a series of important reforms in material, process and structure.
The product adopts a series of important reforms in material, process and structure, which makes the electrical performance of the product reach the advanced level of similar products in the international market in the 1990s.
The product has high efficiency and low loss. With high efficiency and low loss, it can save a lot of electricity consumption and operation cost.
With high efficiency and low loss, it can save a large amount of electricity consumption and operation cost, and has remarkable social benefits.
It is a new product promoted by the State. It is also one of the most popular products among customers.


  • Product Code: SZ11 -8000/35-10.5

Performance Characteristics

●Compared with “9” series, SZ11 series no-load loss is reduced by 18.62%, load loss is reduced by 10.16%, load loss is reduced by 10.16%, total loss is reduced by 11.49%, and the energy saving effect is obvious with good social benefit.
The energy-saving effect is obvious and has a good social benefit.

Implementation standards

●GB1094.1~2-2013 Power transformer
●GB1094.3,5-2003 Power Transformers
●GB1094.4-2005 Power Transformer
●GB/T6451-2015 three-phase oil-immersed power transformer technical parameters and requirements

Model Number and Meaning

Model Number SZ11-□/□

SZ11□□
Three phase oil immersed transformerPerformance level codeSealed constructionRated capacity(KVA)Voltage level(KV)

Technical Parameters

Rated capacity
(KVA)		Voltage combinationConnection group labelNo-load loss
(W)		load loss
(W)		Short circuit resistance  
(%)		No-load current
(%)		Weight(Kg)External dimensionsGauge
(mm)
High tension
(KV)		Tapoff
(%)		Low pressure
(KV)		Body weightOil weightTotal weightL×W×H
200033
35
38.5		±4×2.5%6.0
6.3
11.0		Dy11









YNd11		2.319.236.50.644951909601400×755×1210820×820
25002.7220.640.657021010701430×800×1220820×820
31503.2324.717.00.5868026012601470×835×1350820×820
40003.8729.150.5682526514601530×900×14001070×1070
50004.6434.27.50.54101031017501550×930×14401070×1070
63005.6336.760.5114537020501760×890×14601070×1070
80007.8740.618.00.48137044024301810×935×18101070×1070
100009.2848.050.46153551028201920×1090×18601070×1070
1250010.9456.850.45129558031852035×1210×19301070×1070

Note:

1.For more capacity 35kV transformer performance parameters, dimensions and weight data, please contact our company.

2.8000 kVA and above capacity transformers for air cooling units are also available on request (Model:SFZ11).

3.The weight and external dimension data in the table are for reference only, and are subject to change without further notice.

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