It is applicable for power systems of AC50Hz and rated working voltage up to and including 10kV, used as distribution transformer for enterprises of petroleum, metallurgy, chemical industry, textile industry, light industry, etc, also can be used in some dusty locations.
Iron core
The core is made of amorphous alloy strips by means of winding, whose no-load loss is only 25% of that of S9 distribution transformer.
Winding
The winding adopts corrugated oil duct with non-dipping process, bound by shrinkable tape; all windings are of square with rounded angle; taps of HV winding with corresponding tapping voltage shall be led to the tap switch, and the switch shall be installed on the box cover. Power supply must be cut off first when changing the tapping voltage.
Installation of protective device
● Transformers of class 30~2000kVA are equipped with pressure relief valve;
● Gas relay with alarm and tripping terminals is available on request.
Oil temperature measuring device
● All the transformers are equipped with tube holder for glass-stem thermometer that is set on the top of oil tank, and immersed in oil for about 120±10mm;
● 1000~2000kVA transformer is equipped with outdoor signal thermometer;
Transformer oil tank
● Transformer oil tank is composed of corrugated walls with powder painted surface and reinforced with film. Corrugated cooling fin not only has cooling function, but also has “breathing” function, the elasticity of corrugated cooling fin make it adapt to the change of oil volume due to change of temperature. So this hermetically sealed transformer does not have oil conservator, which decreases the height of transformer;
● The transformer adopts vacuum oil-injection technology during encapsulation that thoroughly removes the moisture from transformer, and keeps the transformer oil from contacting the air. This technology also avoid insulation performance reduction or oil aging due to entering of oxygen or moisture, so it is unnecessary to conduct oil sampling test regularly.
● Installation height: altitude shall not exceed 1000m
● Ambient temperature: -40℃~40℃
Rated capacity
|
Voltage combination
|
Connection group
|
Loss (kV)
|
No-load current
|
Short-circuit impedance
|
Weight (kg)
|
Outline dim. (m)
|
Track gauge vertical/horizontal
|
HV
|
LV
|
(kVA)
|
(kV)
|
Tapping range
|
(kV)
|
symbol
|
No-load
|
On-load(145°)
|
(%)
|
(%)
|
Machine body
|
Oil weight
|
Gross weight
|
L
|
W
|
H
|
(mm)
|
10
|
11
10.5
10
6.3
6
|
±5%
±2×2.5%
|
0.4
|
Dyn11
|
19
|
0.35
|
3.2
|
4.0
|
80
|
70
|
220
|
0.79
|
0.65
|
0.88
|
400/400
|
20
|
26
|
0.48
|
2.7
|
130
|
80
|
290
|
0.81
|
0.71
|
0.90
|
400/400
|
30
|
33
|
0.60
|
1.7
|
170
|
80
|
340
|
0.83
|
0.79
|
0.93
|
400/400
|
50
|
43
|
0.87
|
1.3
|
230
|
100
|
440
|
0.88
|
0.80
|
0.99
|
400/400
|
63
|
50
|
1.04
|
1.2
|
290
|
110
|
530
|
0.89
|
0.81
|
1.02
|
450/450
|
80
|
60
|
1.25
|
1.1
|
330
|
120
|
590
|
0.90
|
0.82
|
1.05
|
450/450
|
100
|
75
|
1.50
|
1.0
|
380
|
140
|
680
|
0.96
|
0.87
|
1.09
|
550/550
|
125
|
85
|
1.80
|
0.9
|
440
|
160
|
790
|
1.19
|
0.87
|
1.13
|
550/550
|
160
|
100
|
2.20
|
0.7
|
520
|
190
|
920
|
1.30
|
0.96
|
1.11
|
550/550
|
200
|
120
|
2.60
|
0.7
|
620
|
220
|
1070
|
1.39
|
1.01
|
1.11
|
550/550
|
250
|
140
|
3.05
|
0.7
|
730
|
250
|
1250
|
1.48
|
1.07
|
1.15
|
550/550
|
315
|
170
|
3.65
|
0.5
|
880
|
300
|
1510
|
1.40
|
1.05
|
1.21
|
550/550
|
400
|
200
|
4.30
|
0.5
|
1070
|
360
|
1790
|
1.54
|
1.08
|
1.28
|
550/550
|
500
|
240
|
5.15
|
0.5
|
1240
|
390
|
2050
|
1.63
|
1.14
|
1.31
|
660/660
|
630
|
320
|
6.20
|
0.3
|
4.5
|
1570
|
510
|
2580
|
1.67
|
1.14
|
1.41
|
820/820
|
800
|
380
|
7.50
|
0.3
|
1880
|
590
|
3080
|
1.89
|
1.18
|
1.48
|
820/820
|
1000
|
450
|
10.30
|
0.3
|
2040
|
690
|
3370
|
1.85
|
1.38
|
1.58
|
820/820
|
1250
|
530
|
12.00
|
0.2
|
2480
|
850
|
4260
|
2.00
|
1.54
|
1.68
|
820/820
|
1600
|
630
|
14.50
|
0.2
|
3010
|
1070
|
5180
|
2.14
|
1.60
|
1.75
|
820/820
|
2000
|
750
|
17.40
|
0.2
|
5.0
|
3540
|
1150
|
6180
|
2.29
|
1.76
|
1.87
|
820/820
|
Order guide
Please specify the product model, rated capacity, HV/LV rated voltage and high-voltage tapping range, phase number, frequency, connection group symbol and so on in the order.