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Amorphous Alloy Dry-Type Distribution Transformer


Amorphous alloy dry-type distribution transformer is a new type of distribution transformer with low loss and energy conservation. It combines low loss of amorphous alloy material and high insulation performance and mechanical strength of traditional epoxy resin pouring dry-type transformers.

It is suitable for ≤35kV power distribution systems of power plants, power stations, industrial and mining enterprises, and power distribution stations. It is especially applicable for intermittent operation occasions, such as subway and countryside’s power grids. It features low eddy-current loss, high resistance to corrosion, low noise, strong short circuit resistance, long life and excellent power supply quality.

Product introduction



Working Conditions:
No.
Conditions
Units
Parameter Values 
1
Rated Voltage
kV
10
2
Highest Operating Voltage
kV
12
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  30kVA ~ 2500kVA, Amorphous Alloy, Dry-Type 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 (%)
Acoustic Power Level dB(A)
High Voltage (kV)
High Voltage Tapping Range (%)
Low Voltage (kV)
100℃
(B)
120℃
(F)
145℃
(H)
30
6
6.3
6.6
10
10.5
11
±5
±2×2.5
0.4
Dyn11
70
670
710
760
1.6
4.0
63
50
90
940
1 000
1 070
1.4
80
120
1 290
1 380
1 480
1.3
65
100
130
1 480
1 570
1 690
1.2
125
150
1 740
1 850
1 980
1.1
66
160
170
2 000
2 130
2 280
1.1
200
200
2 370
2 530
2 710
1.0
67
250
230
2 590
2 760
2 960
1.0
315
280
3 270
3 470
3 730
0.9
69
400
310
3 750
3 990
4 280
0.8
500
360
4 590
4 880
5 230
0.8
70
630
420
5 530
5 880
6 290
0.7
71
630
410
5 610
5 960
6 400
0.7
6.0
800
480
6 550
6 960
7 460
0.7
72
1 000
550
7 650
8 130
8 760
0.6
1 250
650
9 100
9 690
10 370
0.6
74
1 600
760
11 050
11 730
12 580
0.6
75
2 000
1 000
13 600
14 450
15 560
0.5
77
2 500
1 200
16 150
17 170
18 450
0.5
78
1 600
760
12 280
12 960
13 900
0.6
8.0
75
2 000
1 000
15 020
15 960
17 110
0.5
77
2 500
1 200
17 760
18 890
20 290
0.5
78
Note 1: Values of on-load loss in this Table is determined by different insulation systems temperatures in brackets (please refer to GB1094.11) .
Note 2: If other connection symbol is used, specific requirements must be determined by negotiations between manufacturer and client.

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