S11-M Series Hermetically Sealed Oil-immersed Power Transformer of Class 6-10kKV

S11-M Series Hermetically Sealed Oil-immersed Power Transformer of Class 6-10kKV

Our three-phase oil-immersed distribution transformer adopts new type insulation structure for its body that further improves its short-circuit resistant capacity
Product description

Model meaning


Overview & features

Our three-phase oil-immersed distribution transformer adopts new type insulation structure for its body that further improves its short-circuit resistant capacity; its iron core is made of high quality cold-rolled steel sheet; all HV windings are made of oxygen-free copper, and adopt multi-layer barrel type structure; all fasteners have gone through special tightening treatment. 

The product is featured with high efficiency, low loss, it is able to save much electric energy and running cost, has significant social benefits, is a high-new-tech product popularized by the nation.  

Reliable structure 

Depending on mature technologies, we made a lot of improvements on the basis of traditional structure: 

◎ Spiral winding with longitudinal oil duct that enjoys good inner heat dissipation; 

◎ Effective support at winding end surface that further improve the short-circuit resistant capacity of winding; 

◎ Adoption of new hoisting structure and body positioning structure that guarantee safety in long-distance transport and in service; 

◎ More unique and reliable structures for your option; 

◎ Adoption of transformers with more excellent performances to improve the technical content. 

Excellent materials 

◎ Because we use oxygen-free copper wires of lower resistivity, which will become smoother and burr-free after a series of surface treatment, so the load loss of our transformer is lower and the electric performance is better.

◎ We use high-quality silicon-steel sheets which are of lower specific loss, so the no-load loss of the transformers is lower.

◎ We use high quality wooden laminating insulation pieces, which won’t split or move even under the influence of short circuit current.

◎ We use thoroughly filtrated transformer oil containing less water, gas or impurities, which makes our transformers work better.

◎ We use high quality rubber sealing material, which can prevent the transformers from aging or leakage effectively.

◎ All raw materials have passed the quality testing, and all the raw material factories have passed the national standard IS09000 inspection.

Good technology and economic performance

Improved from S9 series product, S11 series product reduces the no-load loss by 31%; no-load current by 75-90%; average temperature-rise by 10k; noise level by 3-5 db; and double the products’ service life. Even under 20% overloads, it can also work for a long period of time.

Hermetically sealed

The “M” in S11 (M) stands for omniseal structure that the oil tank employed. Compared with common oil-immersed transformer, omniseal oil-immersed transformer discards the oil conservator but adopts wing-like corrugation for replacing oil tube as component of heat dispersion. The corrugated oil tank which is made of high-quality cold-rolled sheets is produced on the special production lines. The wing-like corrugation will expand and compress as that the volume of transformer dose, so that the transformer is separated from the atmosphere and can prevent or slower deterioration of oil and breathing of insulation. All these ensure the reliability of operation and without maintenance.

After the treatment of deoiling, derusting and parkerizing, the surface of corrugated oil tank is coated with paint which provides three-proofing function. It is suitable for the use in the environment such as metallurgy, petrochemical industry and mining, etc.


Service conditions

● Installation height: altitude shall not exceed 1000m

● Ambient temperature: -40℃~40℃


Dimension & Schematic

Rated capacityInstallation dimension(mm)
kVALWHC1C2
30750643974400400
507956931013400400
638006651050400400
808406801075400400
1007756901100550550
12512609001045550550
16010907201140550550
20011807801155550550
25011757501180550550
31513158901240660660
40013309101280660660
50013909301340660660
630154510301410820820
800157010201535820820
1000180012501430820820
1250191011301650820820
1600201012201740820820
2000212012801780820820



Technical parameters

Rated capacity
Voltage combination
Connection group
Loss (KW)
No-load current 
Short-circuit impedance 
Weight (kg)
kVA
HV kV
High-voltage tapping range
LV kV
symbol
No-load
On-load
%
%
Oil weight
Gross weight 
30
6
       6.3
       6.6
       10
       10.5
       11
±5%
       ±2×2.5%
0.4
Yyn0
       Dyn11
0.1
0.63/0.60
2.1
4.0
75
295
50
0.13
0.91/0.87
1.1
88
395
63
0.15
1.09/1.04
1.0
95
420
80
0.18
1.31/1.25
1.0
103
480
100
0.20
1.58/1.50
0.9
115
540
125
0.24
1.89/1.80
0.9
130
645
160
0.28
2.31/2.20
0.8
145
740
200
0.34
2.73/2.60
0.8
175
885
250
0.40
3.20/3.05
0.7
195
1010
315
0.48
3.83/3.65
0.7
230
1205
400
0.57
4.52/4.30
0.6
255
1375
500
0.68
5.41/5.15
0.6
4.5
285
1620
630
0.81
6.20
0.6
350
1960
800
0.98
7.50
0.5
405
2310
1000
1.15
10.30
0.5
490
1690
1250
1.36
12.00
0.5
550
3315
1600
1.64
14.50
0.4
625
3795

Note: 1. High-voltage tapping range of ±5×2.5% or ±2×2.5% is available on request.

2. Performance parameters of other capacity specifications can be determined by both users and manufacturer through negotiation. 

If you the s11-m series hermetically sealed oil-immersed power transformer of class 6-10kkv caters to your requirement, welcome to buy the high quality equipment made in China from us. As one of the leading manufacturers and suppliers of various industrial electrical products in China, we won't let your down.

Related Products
Feedback

Copyright © HONLE Electric Co.,Ltd All rights reserved.Tel: +86-577-61755578