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Performance Characteristics
1. Flexible design to meet the needs of different users
1) The first-class R & D team in the industry ensures that the performance indicators of products meet or exceed the national standards, introduces scientific management mode, and standardizes the operation of each process to ensure the excellent quality of each product.
2) Flexible design to meet the needs of different usersAccording to the actual needs of customers, the product structure can be de. designed flexibly, and all kinds of accessories can be selected according to users' requirements, to meet the personalized needs of different customers.
2. Safe, no partial discharge, high efficiency, and energy-saving
1) Seven-stage temperature control technology
2) Low loss: adopt a special design scheme, the no-load loss is 20% lower than the national standard, and the load loss is 5% lower than the national standard.
3) Low noise: the noise is 3-5 dB lower than the national standard
4) No partial discharge: factory test is less than 40pc
5) Anti-short circuit: pass the sudden short circuit test of the national transformer testing center.
Scope of application: widely used in large and medium-sized city power grids large thermal power plants, and industrial and mining enterprises.
3. DuPont Nomex Insulation System
1) World-recognized high-quality electrical insulating materials Chemical - there is no weak C-H bond, with good chemical stability.
2) Heat resistance: long-term stable operation at 220 ℃; Short-term operation at 350 ℃; At 250 ℃, it will not melt, flow or support combustion; No toxic or corrosive gas will be released
at 750 ℃.
3) Safety, and environmental protection - no toxic reaction to people and animals; the smoke concentration is low and no harmful gas is produced during burning.
As the main drafter of GB/Z109414-2011 "Power transformers Part 14: design and application of liquid immersed transformers with high-temperature insulating materials", CEEG has successfully developed a series of products with high overload, high reliability, high safety and long life-based on the Nomex insulation system of DuPont and the seven-level temperature control technology of core. Each performance has reached the industry-leading advanced level.
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SSZ20-220KV 31500KVA-240000KVA Three Phase Three Winding OLTC Power Transformer |
Rated Capacity (KVA) | Voltage Combination and Tapping Range | Vector Group | No Load Loss (KW) | Load Loss (KW) | No Load Current (%) | Capacity Allocation (%) | Impedance (%) |
HV (KV) | MV (KV) | LV(KV) |
31500 | 220±8x1.25%
230±8x1.25% | 69
115
121 | 6.3
6.6
10.5
21
36
37
38.5 | YNyn0d11 | 23 | 138 | 0.63 | 100/100/100
100/50/100
100/100/50 | HV-MV
12-14
HV-LV
22-24
MV-LV
7-9 |
40000 | 27 | 165 | 0.60 |
50000 | 31 | 194 | 0.60 |
63000 | 36 | 231 | 0.55 |
90000 | 10.5
21
36
37
38.5 | 47 | 300 | 0.44 |
120000 | 60 | 369 | 0.44 |
150000 | 70 | 438 | 0.39 |
180000 | 81 | 538 | 0.39 |
240000 | 100 | 667 | 0.35 |
Note:
1. The data listed in the table are applicable to step-down structure products, and step-up structure products can also be provided asrequired;
2. transformer with 35kV low voltage can also be provided according to requirements;
3. When the annual load rate of transformer is between 45% and 50%,the highest operation efficiency can be obtained by using theloss value in the table. |
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SSZ20-220KV 31500KVA-300000KVA Three Phase Three Winding Non Excitation Voltage Regulating Power Transformer |
Rated Capacity (KVA) | Voltage Combination and Tapping Range | Vector Group | No Load Loss (KW) | Load Loss (KW) | No Load Current (%) | Impedance (%) |
HV (KV) | MV (KV) | LV(KV) | Step Up | Step Down |
31500 | 220±2x2.5%
230±2x2.5%
242±2x2.5% | 69
115
121 | 6.3
6.6
10.5
21
36
37
38.5 | YNyn0d11 | 21 | 138 | 0.56 | HV-MV
22-24
HV-LV
12-14
MV-LV
7-9 | HV-MV
12-14
MV-LV
22-24
MV-LV
7-9 |
40000 | 25 | 165 | 0.5 |
50000 | 29 | 194 | 0.44 |
63000 | 34 | 231 | 0.44 |
90000 | 10.5
13.8
21
36
37
38.5 | 44 | 300 | 0.39 |
120000 | 55 | 369 | 0.39 |
150000 | 10.5
13.8
15.75
21
36
37
38.5 | 65 | 438 | 0.33 |
180000 | 73 | 500 | 0.33 |
240000 | 91 | 616 | 0.28 |
300000 | 108 | 726 | 0.24 |
Note:
1. the capacity distribution of the load in the table is (100/100/100)%; The capacity distribution of the step up structure can be(100/50/100)%; The capacity distribution of the step-down structure can be (100/100/50)%, or (100/50/100).
2. transformers with rated capacity less than 31500kva and other voltage combinations can also be provided as reguired.
3. transformers with low voltage of 35kV can also be provided.
4. the non tap structure is preferred, lf required by operation, tap can be set.
5. when the average load rate of transformer is about 45%, the maximum operating efficiency can be obtained by using the loss value
in the table. |
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S20-220KV 31500KVA-420000KVA Three Phase Double Winding Non Excitation Voltage Regulating Power Transformer |
Rated Capacity (KVA) | Voltage Combination and Tapping Range | Vector Group | No Load Loss (KW) | Load Loss (KW) | No Load Current (%) | Impedance (%) |
HV (KV) | LV (KV) |
31500 | 220±2x2.5%
242±2x2.5% | 6.3
6.6
10.5 | YNd11 | 18 | 115 | 0.56 | 12-14 |
40000 | 21 | 134 | 0.56 |
50000 | 25 | 161 | 0.52 |
63000 | 30 | 188 | 0.52 |
75000 | 10.5
13.8 | 34 | 213 | 0.48 |
90000 | 40 | 246 | 0.44 |
120000 | 49 | 304 | 0.44 |
150000 | 10.5
13.8
15.75
18
20 | 58 | 360 | 0.4 |
160000 | 60 | 378 | 0.39 |
180000 | 66 | 413 | 0.36 |
240000 | 83 | 484 | 0.33 |
300000 | 15.75
18
20 | 98 | 577 | 0.3 |
360000 | 112 | 662 | 0.3 |
370000 | 114 | 675 | 0.3 |
400000 | 122 | 716 | 0.28 |
420000 | 125 | 742 | 0.28 |
Note:
1. Transformers with rated capacity less than 31500kVA and other voltage combinations can also be provided according to reguire
ments.
2. transformer with low voltage of 35kV can also be provided according to requirements.
3. The non tapping structure is preferred, and taps can be set if required.
4. When the annual average load rate of transformer is between 45% and 50%,the highest operation eficiency can be obtained byusing the loss value in the table. |
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