0102030405
66-110kV Oil Immersed Power Transformer - High Performance from China Suppliers & Factory
Product Features
Low loss
- Electrical calculation by sophisticated computer programs, combine electrical shielding and magnetic circuit technology.
- The core is made of cold rolled, grain orientation high magnetic silicon steel, to reduce the load loss and no-load current.
Low partial discharge
- HV lead adopts specially molded insulation parts which effectively ensure the insulation strength and reduces partial discharge.
High strength
- The tank can withstand the vacuum test and positive pressure test.
- Omni directional location between the core and the tank to guarantee the horizontal position during transportation and operation.
Low Noise
- The step lapped joints of the core laminations reduce the additional losses arising in the corner portions, reduce the load current and electromagnetic noise.
- Reduce of the flux density and increase the shock absorbing measures at design to reduce the noise.
Maintenance-free
- Adopts the bell type tank and the international leading technology, ensure 30 years durability，and maintenance-free operation.
Transformer body assembly
Data Sheet of Typical Products
The energy efficiency level of 66 kV oil-immersed three-phase double-winding no-load tap-changing power transformer
Rated capacity |
Level Ⅰ |
Level Ⅱ |
Level Ⅲ |
short circuit impedance |
|||
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
||
3150 |
2.2 |
20.7 |
2.6 |
20.7 |
3.2 |
21.9 |
8 |
4000 |
2.6 |
24.6 |
3.1 |
24.6 |
3.8 |
25.9 |
|
5000 |
3.1 |
27.6 |
3.7 |
27.6 |
4.6 |
29.2 |
|
6300 |
4.0 |
30.8 |
4.7 |
30.8 |
5.8 |
32.5 |
9 |
8000 |
4.9 |
36.5 |
5.8 |
36.5 |
7.1 |
38.5 |
|
10000 |
5.8 |
43.0 |
6.8 |
43.0 |
8.4 |
45.4 |
|
12500 |
6.8 |
51.1 |
8.1 |
51.1 |
9.9 |
54.0 |
|
16000 |
8.3 |
62.8 |
9.8 |
62.8 |
12.0 |
66.3 |
|
20000 |
9.7 |
76.1 |
11.4 |
76.1 |
14.1 |
80.4 |
|
25000 |
11.4 |
90.0 |
13.5 |
90.0 |
16.6 |
95.0 |
|
31500 |
13.5 |
108.0 |
16.0 |
108.0 |
19.7 |
114.0 |
|
40000 |
16.2 |
126.9 |
19.1 |
126.9 |
23.5 |
134.0 |
|
50000 |
19.4 |
150.3 |
22.9 |
150.3 |
28.2 |
158.7 |
|
63000 |
22.9 |
178.2 |
27.0 |
178.2 |
33.3 |
188.1 |
|
The energy efficiency level of 66 kV oil-immersed three-phase double-winding OLTC power transformer
Rated capacity |
Level Ⅰ |
Level Ⅱ |
Level Ⅲ |
short circuit impedance |
|||
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
||
6300 |
4.4 |
30.8 |
5.2 |
30.8 |
6.4 |
32.5 |
9 |
8000 |
5.3 |
36.5 |
6.2 |
36.5 |
7.7 |
38.5 |
|
10000 |
6.2 |
43.0 |
7.3 |
43.0 |
9.0 |
45.4 |
|
12500 |
7.4 |
51.1 |
8.7 |
51.1 |
10.7 |
54.0 |
|
16000 |
8.9 |
62.8 |
10.5 |
62.8 |
12.9 |
66.3 |
|
20000 |
10.6 |
76.1 |
12.5 |
76.1 |
15.4 |
80.4 |
|
25000 |
12.5 |
90.0 |
14.8 |
90.0 |
18.2 |
95.0 |
|
31500 |
14.8 |
108.0 |
17.5 |
108.0 |
21.5 |
114.0 |
|
40000 |
17.7 |
126.9 |
20.9 |
126.9 |
25.8 |
134.0 |
|
50000 |
20.9 |
150.3 |
24.7 |
150.3 |
30.4 |
158.7 |
|
63000 |
24.7 |
178.2 |
29.2 |
178.2 |
35.9 |
188.1 |
|
The energy efficiency level of 110 kV oil-immersed three-phase double-winding no-load tap-changing power transformer
Rated capacity |
Level Ⅰ |
Level Ⅱ |
Level Ⅲ |
short circuit impedance |
|||
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
||
6300 |
4.1 |
32 |
4.8 |
32 |
5.9 |
33 |
10.5 |
8000 |
4.9 |
38 |
5.8 |
38 |
7.1 |
40 |
|
10000 |
5.8 |
45 |
6.8 |
45 |
8.4 |
48 |
|
12500 |
6.8 |
53 |
8.1 |
53 |
9.9 |
56 |
|
16000 |
8.3 |
65.7 |
9.8 |
65.7 |
12.0 |
69 |
|
20000 |
9.7 |
79 |
11.4 |
79 |
14.1 |
84 |
|
25000 |
11.4 |
94 |
13.5 |
94 |
16.6 |
99 |
|
31500 |
13.5 |
111 |
16.0 |
111 |
19.7 |
117 |
|
40000 |
16.2 |
133 |
19.1 |
133 |
23.5 |
141 |
|
50000 |
19.4 |
158 |
22.9 |
158 |
28.2 |
166 |
|
63000 |
22.9 |
187 |
27.0 |
187 |
33.3 |
198 |
|
75000 |
26.0 |
212 |
30.7 |
212 |
37.8 |
224 |
12～14 |
90000 |
29.9 |
245 |
35.4 |
245 |
43.5 |
258 |
|
120000 |
37.3 |
303 |
44.1 |
303 |
54.2 |
320 |
|
150000 |
44.1 |
359 |
52.1 |
359 |
64.1 |
379 |
|
180000 |
49.5 |
411 |
58.5 |
411 |
72.0 |
434 |
|
The energy efficiency level of 110 kV oil-immersed three-phase double-winding LV-35kV no-load tap-changing power transformer
Rated capacity |
Level Ⅰ |
Level Ⅱ |
Level Ⅲ |
short circuit impedance |
|||
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
||
6300 |
4.4 |
33 |
5.2 |
33 |
6.4 |
35 |
10.5 |
8000 |
5.3 |
40 |
6.2 |
40 |
7.7 |
42 |
|
10000 |
6.2 |
47 |
7.3 |
47 |
9.0 |
49 |
|
12500 |
7.2 |
56 |
8.5 |
56 |
10.5 |
59 |
|
16000 |
8.6 |
68 |
10.1 |
68 |
12.5 |
72 |
|
20000 |
10.2 |
85 |
12.0 |
85 |
14.8 |
89 |
|
25000 |
12.1 |
99 |
14.2 |
99 |
17.5 |
105 |
|
31500 |
14.3 |
120 |
16.8 |
120 |
20.7 |
126 |
|
40000 |
16.9 |
140 |
20.0 |
140 |
24.6 |
147 |
|
50000 |
20.3 |
174 |
24.0 |
174 |
29.5 |
183 |
|
63000 |
24.0 |
209 |
28.3 |
209 |
34.9 |
220 |
|
6300 |
4.4 |
33 |
5.2 |
33 |
6.4 |
35 |
|
8000 |
5.3 |
40 |
6.2 |
40 |
7.7 |
42 |
|
10000 |
6.2 |
47 |
7.3 |
47 |
9.0 |
49 |
|
The energy efficiency level of 110 kV oil-immersed three-phase three-winding no-load tap-changing power transformer
Rated capacity |
Level Ⅰ |
Level Ⅱ |
Level Ⅲ |
short circuit impedance |
||||
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
Set up voltage |
Set down voltage |
|
6300 |
4.9 |
40 |
5.8 |
40 |
7.1 |
42 |
H-M:17.5~18.5 H-L:10.5 M-L:6.5 |
H-M:10.5 H-L:17.5~18.5 M-L:6.5 |
8000 |
5.8 |
48 |
6.9 |
48 |
8.5 |
50 |
||
10000 |
6.9 |
56 |
8.2 |
56 |
10.1 |
59 |
||
12500 |
8.1 |
67 |
9.6 |
67 |
11.8 |
70 |
||
16000 |
9.8 |
81 |
11.6 |
81 |
14.3 |
86 |
||
20000 |
11.6 |
95 |
13.7 |
95 |
16.9 |
101 |
||
25000 |
13.5 |
113 |
16.0 |
113 |
19.7 |
120 |
||
31500 |
16.2 |
134 |
19.1 |
134 |
23.5 |
142 |
H-M:17.5~18.5 H-L:10.5 M-L:6.5 |
H-M:10.5 H-L:17.5~18.5 M-L:6.5 |
40000 |
19.1 |
161 |
22.6 |
161 |
27.8 |
170 |
||
50000 |
22.9 |
192 |
27.0 |
192 |
33.3 |
202 |
||
63000 |
27.1 |
230 |
32.0 |
230 |
39.4 |
243 |
||
6300 |
4.9 |
40 |
5.8 |
40 |
7.1 |
42 |
||
The energy efficiency level of 110 kV oil-immersed three-phase double-winding OLTC power transformer
Rated capacity |
Level Ⅰ |
Level Ⅱ |
Level Ⅲ |
short circuit impedance |
|||
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
||
6300 |
4.4 |
32 |
5.2 |
32 |
6.4 |
33 |
10.5 |
8000 |
5.3 |
38 |
6.2 |
38 |
7.7 |
40 |
|
10000 |
6.2 |
45 |
7.3 |
45 |
9.0 |
48 |
|
12500 |
7.4 |
53 |
8.7 |
53 |
10.7 |
56 |
|
16000 |
8.9 |
66 |
10.5 |
66 |
12.9 |
69 |
|
20000 |
10.6 |
79 |
12.5 |
79 |
15.4 |
84 |
|
25000 |
12.5 |
94 |
14.8 |
94 |
18.2 |
99 |
|
31500 |
14.9 |
111 |
17.6 |
111 |
21.6 |
117 |
|
40000 |
17.8 |
140 |
21.0 |
140 |
25.8 |
148 |
|
50000 |
21.0 |
175 |
24.8 |
175 |
30.6 |
184 |
|
63000 |
25.0 |
209 |
29.5 |
209 |
36.3 |
220 |
|
The energy efficiency level of 110 kV oil-immersed three-phase three-winding OLTC power transformer
Rated capacity |
Level Ⅰ |
Level Ⅱ |
Level Ⅲ |
short circuit impedance |
|||
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
No-Load Loss |
Load Loss (75℃) |
||
6300 |
5.3 |
40 |
6.2 |
40 |
7.7 |
42 |
H-M:10.5 H-L:17.5~18.5 M-L:6.5 |
8000 |
6.3 |
48 |
7.5 |
48 |
9.2 |
50 |
|
10000 |
7.5 |
56 |
8.8 |
56 |
10.9 |
59 |
|
12500 |
8.9 |
67 |
10.5 |
67 |
12.9 |
70 |
|
16000 |
10.6 |
81 |
12.5 |
81 |
15.4 |
86 |
|
20000 |
12.5 |
95 |
14.8 |
95 |
18.2 |
101 |
|
25000 |
14.9 |
113 |
17.6 |
113 |
21.6 |
120 |
|
31500 |
17.7 |
134 |
20.9 |
134 |
25.7 |
142 |
|
40000 |
21.2 |
161 |
25.0 |
161 |
30.8 |
170 |
|
50000 |
25.0 |
192 |
29.6 |
192 |
36.4 |
202 |
|
63000 |
29.8 |
230 |
35.2 |
230 |
43.3 |
243 |
|
Frequently Asked Questions
How do these transformers achieve low electrical losses?
We utilize sophisticated computer programs for electrical calculations, combining advanced electrical shielding and magnetic circuit technology. Furthermore, the core is constructed from cold-rolled, grain-oriented high magnetic silicon steel to minimize load loss and no-load current.
What design measures are taken to reduce partial discharge in the HV leads?
The High Voltage (HV) lead is equipped with specially molded insulation parts. This design effectively guarantees insulation strength and significantly lowers partial discharge.
How is the physical strength of the transformer tank guaranteed?
The transformer tank is designed to withstand both vacuum and positive pressure tests. Additionally, omni-directional location structures between the core and the tank secure the horizontal position during transit and operation.
What features help reduce the electromagnetic and load noise of the system?
We use step-lapped joints in the core laminations to reduce corner losses, load current, and electromagnetic noise. We also decrease flux density and implement shock-absorbing measures at the design phase.
What makes these transformers maintenance-free?
By employing a bell-type tank structure and leading international sealing and manufacturing technologies, these power transformers ensure a durability of up to 30 years with maintenance-free operation.
What energy efficiency levels do these typical products support?
Our typical 66 kV and 110 kV oil-immersed three-phase power transformers are designed and graded across Level I, Level II, and Level III energy efficiency standards.