20kv Oil Immersed Transformer Distribution Transformer
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PRODUCTS DETAILS

Basic Info.

Model NO.
S9, S11
Usage
Power Transformer
Frequency Characteristics
Power Frequency
Shape of Core
Ring
Brand
Rockwell
Color
Gray, Green or Customized
Material
Oil, CRGO, Copper
Transport Package
Wooden Packing
Specification
IEC/ANSI/IEEE/BS/GB
Trademark
Rockwell
Origin
China
HS Code
8504231100
Production Capacity
20000

Product Description

S9 series oil-immersed power transformer 10KV class:

Features

The three-phase oil-immersed distribution transformer applies new type insulating structure. The iron core is made high-quality cold-rolled silicon-steel plate. High-voltage winding group is made up of high-quality oxygen-free copper lines and it adopts multilayered drum type structure. All fasteners have been processed with special treatment to prevent them from loosening.
As high-tech product that promoted by the country. the product has many advantages such as high efficiency, low loss. Its social benefits are remarkable that it will save much of electricity consumption and operating cost.

Advantage of structure
  1. we employ sprial coil with longitudinal oil path to make a better interior cooling effect;
  2. we improve the effective support of the coil's terminal surface to strengthen the anti-short circuit current capability;
  3. we employ new hoisting structure and body-positioning frames to guarantee that the long distance transport and movement will be more reliable;
  4. cancelled the oil tank, the wave wings of tank instead of the tubing as a cooling device, corrugated tank is made of high quality cold press sheet on dedicated machine and enhance the reliability of running.
Advantage of materials 
  1. because we use oxygen-free copper lines of lower resistivity, which will become smoother and burr-free after series of additional surface treatment, so the load loss of our transformer is lower and the electric performance is better.
  2. We use high-quality silicon-steel plates which are of lower unit loss, and no-load of the transformers is lower;
  3. We use high-quality wooden laminating insulation pieces, which won't split or move even under the influence of short circuit;
  4. We use thoroughly filtrated transformer oil containing less water ,gas and impurities, which makes our transformer work better;
  5. We use high-quality rubber sealing material, which can prevent the transformers form aging or leakage;
  6. All materials has passed the quality testing, and all the raw material factories has pass through the national standard ISO9000 inspection.
Advantage of technology

Improved from S9 series product, S11 series product reduce the no-load loss by 30%,no-load electric current by 70~85%, average temperature by 10K,nosie level by 2~4db, and double the products service life. even under 20% overloads, it can also work for long period of time .
 
Transformers standards

GB 1094.1-1996(IEC 76-1-1993)
GB 1094.3-2003(IEC 60076-3-2000)
GB/T 6451-2008
GB 1094.2-1996 (IEC 76-2-1993)
GB 1094.5-2003(IEC 60076-5:2006)
GB/T 7595-2008
JB/T 10088-2004 6KV~500KV
GB 10237-1988
GB/T 3837-2010
 
Transformers service condition

The height above sea level is below 1000m;
Ambient temperature:
Highest temperature 40ºC,highest daily average temperature 30ºC
Highest annual average temperature 20ºC,lowest outdoor temperature -25ºC
 
Transformers special service condition

The height above sea level is above 1000m;
Ambient temperature:
Highest temperature 40ºC.lowest temperature -45ºC(defines in detail when placing an order)
 
Tech data of 10KV S9,S9-M series distribution transformer
Rated
capacity
(KVA)		 Voltage
group
(KV)
vector
group		 impendance
voltage
(%)
loss		 No-load current
(%)		 weight
(kg)		 outline dimension
(mm)
(L*B*H)		 Gauge vertical/
horizontal

No-load
load
body
oil
total
5 (HV)
11
10.5
10
6.3
6
(LV)
0.4
0.69		 Yyno
Dyn11		 4 0.07 0.35 4 50 45 145 550*450*800 300/300
10 0.09 0.4 3.5 70 55 185 550*450*800 300/300
20 0.11 0.52 3.0 110 60 270 730*660*860 400/400
30 0.13 0.63/0.6 2.3 130 65 305 745*670*900 400/400
50 0.17 0.91/0.87 2.0 195 80 385 775*660*955 400/400
63 0.2 1.09/1.04 1.9 23 80 440 805*690*985 400/400
80 0.25 1.31/1.25 1.9 260 95 510 855*690*1025 400/400
100 0.29 1.58/1.5 1.8 300 95 550 850*675*1065 550/550
125 0.34 1.89/1.8 1.7 335 115 635 995*595*1085 550/550
160 0.4 2.31/2.2 1.6 405 130 775 1050*645*1115 550/550
200 0.48 2.73/2.6 1.5 490 150 900 1080*660*1175 550/550
250 0.56 3.2/3.05 1.4 565 170 1040 1170*725*1205 660/660
315 0.67 3.83/3.65 1.4 655 200 1210 1240*775*1255 660/660
400 0.8 4.52/4.3 1.3 840 250 1435 1315*815*1325 660/660
500 0.96 5.41/5.15 1.2 935 235 1630 1435*930*1360 660/660
630 4.5 1.2 6.2 1.1 1100 330 1990 1505*935*1380 820/820
800 1.4 7.5 1.0 1360 370 2340 1650*1060*1460 820/820
1000 1.7 10.3 1.0 1455 475 2600 1735*1165*1525 820/820
1250 1.95 12.0 0.9 1715 545 3080 1800*1215*1610 820/820
1600 2.4 14.5 0.8 2095 630 3700 1820*1280*1660 820/820
2000 2.8 19.8 0.8 2340 715 4190 2060*1740*2050 820/820
2500 3.3 23.0 0.7 2920 830 5100 2250*1800*2100 1070/1070
Note: High-pressure tap range: ± 5% or ± 2 × 2.5%; Frequency: 50HZ
20kv Oil Immersed Transformer Distribution Transformer
20kv Oil Immersed Transformer Distribution Transformer
20kv Oil Immersed Transformer Distribution Transformer
20kv Oil Immersed Transformer Distribution Transformer
20kv Oil Immersed Transformer Distribution Transformer
20kv Oil Immersed Transformer Distribution Transformer
 

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