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SCB Epoxy Resin Pouring Dry-Type Transformer


SCB epoxy resin pouring dry-type transformer is manufactured in conformity with IEC60726 standards (applicable International Electrotechnical Commission standards), GB6450 standards and GB/T10228 standards (applicable state standards of the People's Republic of China). Frequency: 50Hz. It can be used for electric transformation and distribution of urban power grids. It is primarily applicable for high-rise buildings, commercial centers, airports, offshore drilling platforms, ships, tunnels, large hydropower stations and railway stations.

Product introduction



Working Conditions:
No.
Conditions
Units
Parameter Values
1
Rated Voltage
kV
10 or 35
2
Highest Operating Voltage
kV
12 or 40.5
3
System Neutral Point Earthing Mode
 
Unearthed
4
Rated Frequency
Hz
50
5
Pollution Grade
 
d(Ⅲ)
6
System Short Circuit Current Level (High Voltage Side)
kA
20
7
Ambient Temperature
Maximum Daily Temperature
40
Minimum Daily Temperature
-25
Maximum Daily Temperature Difference
K
25
Average Temperature of the Hottest Month
30
Maximum Annual Average Temperature
20
8
Humidity
Average Daily Relative Humidity
%
≤95
Average Monthly Relative Humidity
≤90
9
Altitude
m
≤1000
10
Solar Radiation Intensity
W/cm2
0.1
11
Maximum Icing Thickness
mm
20
12
Maximum average wind speed: keeping in good conditions for 10min at 10m from the ground level  
m/s
35
13
Earthquake Resistance
Horizontal Ground Acceleration
m/s2
2
Safety Coefficient of 3 Since Resonance Cycles
 
≥1.67
14
Installation Site
 
Indoor
Note 1: Values about temperatures in the table must be adjusted accordingly if the lowest ambient temperature is above -25℃.
Note 2: Pollution grade diagram must be provided if the pollution grade is grade IV. 


Product Parameters:
Table 1  6kV&10kV- 30kV.A ~ 2500kV.A, No-Load Voltage Regulation, Distribution Transformer
Rated Capacity (kVA)
Voltage Combination & Tapping Range
Connection Symbol
No-Load Loss (kW)
On-Load Loss under Different Insulation System Temperatures (kW)
No-Load Current (%)
Short-Circuit Impedance (%)
High Voltage (kV)
High Voltage Tapping Range (%)
Low Voltage (kV)
130℃(B)
(100℃)
155℃(F)
(120℃)
180℃(H)
(145℃)
30
6
6.3
6.6
10
10.5
11
±2.5
±5
0.4
Dyn11
Yyn0
0.190
0.670
0.710
0.760
2.0
4.0
50
0.270
0.940
1.00
1.07
2.0
80
0.370
1.29
1.38
1.48
1.5
100
0.400
1.48
1.57
1.69
1.5
125
0.470
1.74
1.85
1.98
1.3
160
0.540
2.00
2.13
2.28
1.3
200
±2×2.5
±5
0.620
2.37
2.53
2.71
1.1
250
0.720
2.59
2.76
2.96
1.1
315
0.880
3.27
3.47
3.73
1.0
400
0.980
3.75
3.99
4.28
1.0
500
1.16
4.59
4.88
5.23
1.0
630
1.34
5.53
5.88
5.29
0.85
630
1.50
6.61
5.96
6.40
0.85
6.0
800
1.52
6.55
6.96
7.46
0.85
1 000
1.77
7.65
8.13
8.76
0.85
1 250
2.09
9.10
9.69
10.3
0.85
1 600
2.45
11.0
11.7
12.5
0.85
2 000
3.05
13.6
14.4
15.5
0.70
2 500
3.60
16.1
17.1
18.4
0.70
1 600
2.45
12.2
12.9
13.9
0.70
8.0
2 000
3.05
15.0
15.9
17.1
0.70
2 500
3.60
17.7
18.8
20.2
0.70
Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


Table 2  6kV&10kV - 630kV.A~6300kV.A, No-Load Voltage Regulation, Power Transformer
Rated Capacity (kVA)
Voltage Combination & Tapping Range
Connection Symbol
No-Load Loss (kW)
On-Load Loss under Different Insulation System Temperatures (kW)
No-Load Current (%)
Short-Circuit Impedance (%)
High Voltage (kV)
High Voltage Tapping Range (%)
Low Voltage (kV)
130℃(B)
(100℃)
155℃(F)
(120℃)
180℃(H)
(145℃)
630
6
6.3
6.6
10
10.5
11
±2×2.5
±5
3
3.15
6
6.3
Dyn11
Yd11
Yyn0
1.44
6.00
6.36
6.80
1.0
6.0
800
1.62
7.17
7.60
8.13
1.0
1 000
1.94
8.28
8.78
9.39
0.85
1 250
2.34
9.86
10.4
11.1
0.85
1 600
2.79
12.0
12.7
136.6
0.85
2 000
3.60
14.3
15.2
16.2
0.70
2 500
4.23
16.8
17.8
19.1
0.70
3 150
5.04
19.7
20.9
22.3
0.60
7.0
4 000
10
10.5
11
6.07
23.7
26.1
26.0
0.60
5 000
7.20
28.0
29.7
31.8
0.50
6 300
8.50
33.3
35.2
37.8
0.50
Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


Table 3  6kV&10kV - 315kV.A ~ 2500kV.A, On-Load Voltage Regulation, Distribution Transformer
Rated Capacity (kVA)
Voltage Combination & Tapping Range
Connection Symbol
No-Load Loss (kW)
On-Load Loss under Different Insulation System Temperatures (kW)
No-Load Current (%)
Short-Circuit Impedance (%)
High Voltage (kV)
High Voltage Tapping Range (%)
Low Voltage (kV)
130℃(B)
(100℃)
155℃(F)
(120℃)
180℃(H)
(145℃)
315
6
6.3
6.6
10
10.5
11
±4×2.5
0.4
Dyn11
Yyn0
0.990
3.40
3.61
3.86
1.1
4.0
400
1.12
4.02
4.27
4.57
1.1
500
1.28
4.92
5.22
5.58
1.1
630
1.49
5.82
6.17
6.60
1.0
630
1.44
6.00
6.36
6.80
1.0
6.0
800
1.71
7.07
7.50
8.02
1.0
1 000
1.98
8.28
8.78
9.39
0.85
1 250
2.34
9.86
10.4
11.1
0.85
1 600
2.72
11.7
12.4
13.3
0.85
2 000
3.42
14.3
15.2
16.2
0.70
2 500
3.96
17.1
18.1
19.4
0.70
Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


Table 4  20kV - 50kV.A ~ 2500kV.A, No-Load Voltage Regulation, Power Transformer
Rated Capacity (kVA)
Voltage Combination & Tapping Range
Connection Symbol
No-Load Loss (kW)
On-Load Loss under Different Insulation System Temperatures (kW)
No-Load Current (%)
Short-Circuit Impedance (%)
High Voltage (kV)
High Voltage Tapping Range (%)
Low Voltage (kV)
130℃(B)
(100℃)
155℃(F)
(120℃)
180℃(H)
(145℃)
50
20
22
24
±2.5
±5
0.4
Dyn11
Yyn0
0.340
1.16
1.23
1.31
2.0
6.0
100
0.540
1.87
1.99
2.13
1.8
160
0.670
2.33
2.47
2.64
1.6
200
±2×2.5
-5
0.730
2.77
2.94
3.14
1.6
250
0.840
3.22
3.42
3.66
1.8
315
0.970
3.85
4.08
4.36
1.8
400
1.15
4.65
4.84
5.18
1.1
500
1.35
5.46
5.79
6.19
1.1
630
1.53
6.45
6.84
7.32
1.0
800
1.75
7.79
8.26
8.84
1.0
1000
2.07
9.22
9.78
10.4
0.85
1250
2.38
10.8
11.5
12.3
0.85
1600
2.79
13.0
13.8
14.8
0.85
2000
3.24
15.4
16.3
17.5
0.70
2500
3.87
18.2
19.3
20.7
0.70
2000
3.24
16.8
17.8
19.1
0.70
8.0
2500
3.87
20.0
21.2
22.7
0.70
Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


Table 5  35kV - 50kV.A ~ 2500kV.A, No-Load Voltage Regulation, Power Transformer
Rated Capacity (kVA)
Voltage Combination & Tapping Range
Connection Symbol
No-Load Loss (kW)
On-Load Loss under Different Insulation System Temperatures (kW)
No-Load Current (%)
Short-Circuit Impedance (%)
High Voltage (kV)
High Voltage Tapping Range (%)
Low Voltage (kV)
130℃(B)
(100℃)
155℃(F)
(120℃)
180℃(H)
(145℃)
50
35
36
37
38.5
±2.5
±5
0.4
Dyn11
Yyn0
0.450
1.34
1.42
1.52
2.3
6.0
100
0.630
1.97
2.09
2.23
2.0
160
0.790
2.65
2.81
3.00
1.5
200
±2×2.5
±5
0.880
3.13
3.32
3.55
1.5
250
0.990
3.58
3.80
4.06
1.3
315
1.17
4.25
4.51
4.82
1.3
400
1.37
5.10
5.41
5.79
1.1
500
1.62
5.27
6.65
7.11
1.1
630
1.86
7.25
7.69
8.23
1.0
800
2.16
8.60
9.12
9.76
1.0
1000
2.43
9.86
10.4
11.1
0.75
1250
2.83
12.0
12.7
13.6
0.75
1600
3.24
14.6
15.4
16.5
0.75
2000
3.82
17.2
18.2
19.5
0.75
2500
4.45
20.6
21.8
23.8
0.75
Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


Table 6  35kV - 800kV.A ~ 25000kV.A, No-Load Voltage Regulation, Power Transformer
Rated Capacity (kVA)
Voltage Combination & Tapping Range
Connection Symbol
No-Load Loss (kW)
On-Load Loss under Different Insulation System Temperatures (kW)
No-Load Current (%)
Short-Circuit Impedance (%)
High Voltage (kV)
High Voltage Tapping Range (%)
Low Voltage (kV)
130℃(B)
(100℃)
155℃(F)
(120℃)
180℃(H)
(145℃)
800
35
36
37
38.5
±2×2.5
±5
3.15
6
6.3
10
10.5
11
Dyn11
Yd11
Yyn0
2.25
8.87
9.40
10.0
0.95
6.0
1 000
2.67
10.3
10.9
11.6
0.95
1 250
3.13
12.1
12.9
13.8
0.85
1 600
3.69
14.6
15.4
16.5
0.85
2 000
4.23
17.2
18.2
19.5
0.75
7.0
2 500
4.86
20.6
21.8
23.3
0.75
3 150
 
 
 
6.03
23.1
24.5
26.2
0.70
8.0
4 000
 
 
 
7.02
27.7
29.4
31.8
0.70
5 000
 
 
 
8.37
32.9
34.9
37.4
0.60
6 300
 
 
 
9.90
38.5
40.8
43.7
0.60
8 000
 
 
 
Dyn11
Yd11
YNd11
11.3
43.4
46.0
49.3
0.50
9.0
10 000
 
 
 
12.9
52.4
55.5
59.4
0.50
12 500
 
 
6
6.3
10
10.5
11
15.7
60.9
64.6
69.2
0.40
16 000
 
 
19.3
71.7
76.0
81.3
0.40
20 000
 
 
22.9
80.6
85.5
91.5
0.35
10.0
25 000
 
 
27.1
95.3
101
108
0.35
Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.


Table 7  35kV - 2000kV.A ~ 25000kV.A, On-Load Voltage Regulation, Power Transformer
Rated Capacity (kVA)
Voltage Combination & Tapping Range
Connection Symbol
No-Load Loss (kW)
On-Load Loss under Different Insulation System Temperatures (kW)
No-Load Current (%)
Short-Circuit Impedance (%)
High Voltage (kV)
High Voltage Tapping Range (%)
Low Voltage (kV)
130℃(B)
(100℃)
155℃(F)
(120℃)
180℃(H)
(145℃)
2000
35
36
37
38.5
±4×2.5
6
6.3
10
10.5
11
Dyn11
Yd11
4.50
17.9
10.0
20.3
0.75
7.0
2500
5.22
21.8
22.6
24.2
0.75
3150
6.30
24.0
26.4
27.2
0.70
8.0
4000
7.38
28.7
30.4
32.6
0.70
5000
8.78
34.0
36.1
38.6
0.60
6300
10.8
39.4
41.8
44.7
0.60
8000
12.8
44.8
47.5
50.8
0.50
9.0
10000
13.5
53.9
57.1
61.2
0.50
12500
16.4
62.7
56.5
71.1
0.40
16000
20.8
73.8
78.2
83.7
0.40
2000
23.8
88.0
88.0
94.2
0.35
10.0
25000
28.1
98.2
104
111
0.35
Note: Values of on-load loss in this Table is determined by different insulation system temperatures in brackets (please refer to GB1094.11) . Values of on-load loss under other insulation system temperatures (not specified in this Table) must be converted accordingly based on the value of “155℃(F)”.

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