Three-dimensional wound core transformers

Three-dimensional wound core transformers

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S11-M.RL,Three-dimensional wound core transformers  is a new type hi-tech and high energy-saving product. Compared with series S9, 80% of no-load current and 30-40% of no-load loss can be decreased, 8-13dB in noise level can be reduced. It is applicable for distribution, power supply and lighting in industrial, agricultural, mineral, petrochemical fields.  
Normal service condition of Three Phase Distribution Transformer 
Elevation height less than 1000m 
Environmental temperature 
Max. temperature +40ºC
Max. daily average temperature: +30ºC
Max. annual average temperature +20ºC
Min. temperature -30ºC
Operation environment   outdoor
Symmetry of multi-phase power source
Three-phase power sources shall be almost symmetrical.

                

1.Three-dimensional wound core consists of three core limbs whose cross-section is close to circle. Magnetic circuit in three phase is totally symmetrical and identical, which shortens the yokes but makes factor of core limb bigger. 
2.After annealing, internal stress can be removed thoroughly for three-dimensional wound core. There is no higher magnetic reluctance everywhere in its circuit, so no-load loss and energizing current can be decreased greatly. The test shows that more than 80% of no-load current and 30-40% of no-load loss can be decreased.
3. Only fewer joint caused by continuous wound core, there should no noise occurred due to the blocking inside the magnetic circuit of stacking core. In such way, 8-13dB in noise level can be reduced, which is almost in the state of noise silence.
4. Triangle tank is used for such transformer so it is smaller than the normal one. In a word, it is impact, small size with artistic appearance.
  

 

Item

 

capacity

(KVA)

Voltage combination

 

Vector

group

 

No-load loss

(W)

 

 

Load

loss

(W)

 

No-load

current

(%)

 

Impedance

voltage

(%)

H.V.

(KV)

L.V.

(KV)

Tapping range

(%£©

30

 

 

 

 

 

 

 

6

6.3

10

 

 

 

 

 

 

 

 

0.4

 

 

 

 

 

 

 

+/-5

 

 

 

 

 

 

 

 

Y£¬yn0

 

90

600

0.54

 

 

 

 

 

4.0

50

120

870

0.54

63

140

1040

0.52

80

175

1250

0.50

100

200

1500

0.43

125

235

1800

0.40

160

280

2200

0.38

200

335

2600

0.35

250

390

3050

0.32

315

465

3650

0.29

400

560

4300

0.27

500

670

5150

0.27

630

840

6200

0.24

 

 

4.5

800

1000

7500

0.22

1000

1200

10300

0.22

1250

1400

12000

0.22

1600

1800

16700

0.20

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Three-dimensional wound core transformers  is a new type hi-tech and high energy-saving product.