Oil immersed distribution transformers
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Oil immersed distribution transformer
Features
The three-phase oil -immersed distribution transformer applies new type insulating structure. 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 multi-layer 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
l We employ spiral coil with longitudinal oil path to make a better interior cooling effect;
l We improve the effective support of the coil’s terminal surface to strengthen the anti-short circuit current capability.
l We employ new hoisting structure and body-positioning frames to guarantee that the long distance transport and movement will be more reliable;
l Canceled 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.
S11-M Type 6~10 kV
Performance parameters
Rated capacity（KVA）
Voltage
Combination and tap range
connection of transformer winding
No-load
loss(W)
Load
loss (W)
No-load
current (%)
Short
circuit impedance (%)
High
voltage
(KV)
High
voltage tap range
(
%)
Low
voltage
(KV)
30
50
63
80
100
125
160
200
250
315
400
500
630
800
1000
1250
1600
2000
2500
11
10.5
10
6.3
6
±5%
±2x2.5%
0.4
0.69
Yyn0
Dyn11
100
130
150
180
200
240
280
340
400
480
570
680
810
960
1150
1360
1640
1960
2310
630/600
910/870
1090/1040
1310/1250
1580/1500
1890/1800
2310/2200
2730/2600
3200/3050
3830/3650
4520/4300
5410/5150
6200
7500
10300
12000
14500
19800
23000
2.3
2.0
1.9
1.9
1.8
1.7
1.6
1.5
1.4
1.4
1.3
1.2
1.1
1.0
1.0
0.9
0.8
0.8
0.7
4
4
4
4
4
4
4
4
4
4
4
4
4.5
4.5
4.5
4.5
4.5
5
5
S11-M
Type 20kV
Performance parameters
Rated capacity（KVA）
Voltage
Combination and tap range
connection of transformer winding
No-load
loss
(W)
Load
loss (W)
No-load
current (%)
Short
circuit impedance (%)
High
voltage
(KV)
High
voltage taps range (%)
Low
voltage
(KV)
50
100
125
160
200
250
315
400
500
630
800
1000
1250
1600
20
22
24
±5%
±2x2.5%
0.4
Yyn0
Dyn0
210
290
340
360
430
510
610
730
860
1040
1230
1440
1760
2120
1270/1210
2120/2020
2500/2380
2970/2830
3500/3330
4160/3960
5010/4770
6050/5760
7280/6930
8280
9900
12150
14670
17550
2.00
1.80
1.70
1.60
1.50
1.40
1.40
1.30
1.20
1.10
1.00
1.00
0.90
0.80
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
transformer
significant energy saving, uniform magnetic circuit, low no-load loss, low
noise, low temperature rise, high efficiency, significant energy saving effect
of distribution transformers. Using the new core material, and uniform
distribution of the magnetic circuit, greatly reduces the load excitation
current and no-load loss. As the core of the oblique three –seam construction,
so reliable operation, small size, light weight, and available for residential
areas, commercial street, industrial and mining enterprises and rural Power and
lighting purposes.
l Energy conservation.
Compared with the original S11, the average no-load loss reduced by 20% or
more, the no-load current is reduced by 25% or more, operating costs dropped by
an average of more than 15%.
l Long service life,
transformer core with new core material, and greatly reduce the loss
significantly extending the life of the transformer.
l Small footprint, the core
is made from high quality cold rolled grain oriented silicon steel sheet; high,
low voltage winding made of high quality oxygen-free copper wire and multilayer
tact process structure; All fasteners are used special relax treatment, the
high mechanical strength, and transformer sizes small, light weight, and the
fully sealed tank, can be widely used in various environments.
S13-M
Type 6~10 kV
Performance parameters
Rated capacity（KVA）
Voltage
Combination and tap range
connection of transformer winding
No-load
loss(W)
Load
loss (W)
No-load
current (%)
Short
circuit impedance (%)
High
voltage
(KV)
High
voltage tap range
(
%)
Low
voltage
(KV)
30
50
63
80
100
125
160
200
250
315
400
500
630
800
1000
1250
1600
6
6.3
6.6
10
10.5
11
±5%
±2x2.5%
0.4
Dyn11
Yzn11
Yyn0
80
100
110
130
150
170
200
240
290
340
410
480
570
700
830
970
1170
630/600
910/870
1090/1040
1310/1250
1580/1500
1890/1800
2310/2200
2730/2600
3200/3050
3830/3650
4520/4300
5410/5150
6200
7500
10300
12000
14500
1.8
1.6
1.6
1.5
1.4
1.4
1.3
1.2
1.2
1.1
1.1
1.0
0.9
0.8
0.8
0.7
0.6
4
4
4
4
4
4
4
4
4
4
4
4
4.5
4.5
4.5
4.5
4.5
Dyn11
Yyn0
S13-M
Type 20 kV
Performance parameters
Rated capacity（KVA）
Voltage
Combination and tap range
connection of transformer winding
No-load
loss(W)
Load
loss (W)
No-load
current (%)
Short
circuit impedance (%)
High
voltage
(KV)
High
voltage tap range
(
%)
Low
voltage
(KV)
50
100
125
160
200
250
315
400
500
630
800
1000
1250
1600
20
22
24
±5%
±2x2.5%
0.4
Dyn11
Yyn0
170
230
270
290
340
410
490
580
690
830
980
1150
1410
1700
1270/1210
2120/2020
2500/2380
2970/2830
3500/3330
4160/3960
5010/4770
6050/5760
7280/6930
8280
9900
12150
14670
17550
2.0
1.80
1.70
1.60
1.50
1.40
1.40
1.30
1.20
1.10
1.00
1.00
0.90
0.80
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
Improved from
S9 series product, S11 series product reduces the no-load loss by 30%, no-load
electric current by 70~85%, average temperature by 10K, noise level by2~4db,
and double the products service life. Even under 20% overloads, it can also
work for long period of time.
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Oil immersed distribution transformers
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