S11-630kVA Electric Power Oil Immersed Distribution Transformer

Features & Advantages

1,low  for  partial discharge value

2,strong for lightning shock resistance ability  

3,strong  for anti-short circuit ability  

4,Good performance of resistance to desiccation

5,Good for load capacity 
6,Good flame retardant
7,Low noise

 
The power transformers our company produce are energy-saving products.The products characteristics  that it has the leading technology, structure and reliable performance, beautiful appearance .

1,Core of the product with high quality compared with the type 9 product  which has the same  capacity, The no-load loss by 30%, more than 30% lower no-load current.

2,Poducts of coil winding method is one of a kind,with high mechanical strength, strong ability to withstand short-circuit, safe and reliable operation.

3,Transformer oil with air to isolate and prolong the service life of the transformer.

4,Small volume, cover a small area, beautiful shape, reduce maintenance.

Item No.

Information

Description

Oil immersed Distribution Transformer
 

 
 
Summary

The three-phase oil-immersed distributing transformer applies new type insulating structure and makes short-circuit resistance strong. The iron core is made of 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.

Reliable Structure
 
 

1. Spiral loops with longitudinal oil path to produce a better interior cooling effect;
2. Improve the effectual support of the loop's terminal face to strengthen the anti-short circuit electricity capability;
3. New suspending structure and instrument-positioning frames to guarantee that the long distance transport and movement will be more reliable.

 
Excellent Materials
 

1. 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. High-quality silicon-steel plates which are of lower unit loss, and the no-load of the transformers is lower.
3. High-quality wooden laminating insulation pieces, which won't split or move even under the influence of short circuit.
4. Thoroughly filtrated transformer oil containing less water, gas and impurities, which makes our transformers work better.
5. High-quality rubber sealing material, which can prevent the transformers form aging or leakage.

 
Transformer Service Condition

Altitude cannot exceed: 1000m
Highest ambient temperature: +40°C
Highest daily average temperature: +30°C
Highest annual average temperature: +20°C
Lowest outdoor temperature: -25°C

Good Technology

Compare with other series product, S9 series product reduces the no-load loss by 10%, load loss by 24% and no-load electric current by 46%; as a result, the operating cost will drop by 19%. Improved from S9 series product, S11 series product reduces the no-load loss by 20%; no-load electric current by 70%85%; average temperature by 10K; noise level by 2-4db; and double the products' service life. Even under 20% overloads, it can also work for a long period of time.

Oil-immersed power transformer

Product model

nominal capacity

Voltage combination

Join group label

No-load loss(KW)

 load loss(KW)

No-load current(%)

Short circuit impedance(%)

HV(KV)

High voltage range(%)

LV(KV)

S11-M-50/35

50

35-38.52

±5

0.4

Dyn11
Yyn0

0.17

1.21/1.15

2.00

6.5

S11-M-100/35

100

0.23

2.01/1.92

1.80

S11-M-125/35

125

0.27

2.38/2.26

1.70

S11-M-160/35

160

0.29

2.82/2.69

1.60

S11-M-200/35

200

0.34

3.33/3.16

1.50

S11-M-200/35

250

0.41

3.95/3.76

1.40

S11-M-315/35

315

0.49

4.76/4.53

1.40

S11-M-400/35

400

0.58

5.75/5.47

1.30

S11-M-500/35

500

0.69

6.92/6.58

1.20

S11-M-630/35

630

0.83

7.87

1.10

S11-M-800/35

800

0.98

9.41

1.00

S11-M-1000/35

1000

0.15

11.54

1.00

S11-M-1250/35

1250

1.41

13.94

0.90

S11-M-
1600/35

1600

1.7

16.67

0.80