| Performance parameters of S18-6300~180000/110kV oil-immersed three-phase double-winding off-excitation voltage regulating power transformer (three-level energy efficiency) |
Rated Capacity
kVA |
Voltage combination and tap range |
Vector
Group |
Load loss kW |
load loss kW(75C) |
No-load current% |
Short circuit impedance% |
Transport Package |
HS Code |
high voltage
kV |
High voltage tapping range |
Low voltage kV |
| 6300 |
110 115 121 |
2x2.5% |
6.3 6.6 10.5 |
YNd11 |
5.90 |
33 |
0.62 |
10.5 |
International Wooden Case or According to Client′s requirements |
8504349000 |
| 8000 |
7.10 |
40 |
0.62 |
|
| 10000 |
8.40 |
48 |
0.58 |
|
| 12500 |
9,90 |
56 |
0.58 |
|
| 16000 |
12.00 |
69 |
0.54 |
|
| 20000 |
14.10 |
84 |
0.54 |
|
| 25000 |
16.60 |
99 |
0.50 |
|
| 31500 |
19.70 |
117 |
0.48 |
|
| 40000 |
23.50 |
141 |
0.45 |
|
| 50000 |
28.20 |
166 |
0.42 |
|
| 63000 |
33.30 |
198 |
0.38 |
|
| 75000 |
13.8 15.75 18 21 |
37.80 |
224 |
0.33 |
12~14 |
|
| 90000 |
43.50 |
258 |
0.30 |
|
| 120000 |
54.20 |
320 |
0.27 |
|
| 150000 |
64.10 |
379 |
0.24 |
|
| 180000 |
72.00 |
434 |
0.20 |
|
\ FEATURES \ LOSS LOSS \ LOW NOISE \ STABLE & RELIABLE \
1. 7-stage temperature control technology system, which combined with the temperature field dinite element analysis, to ensure full play to the performance advantages of various insulation materials.
2. The insulation system is based on DuPont Nomex ® Insulation paper technology.
3. Low noise: unique noise reduction measures are adopted in different parts to ensure that the noise control is better than the national standards.
4. Low loss: The core is made of high-quality cold-rolled silicon steel sheet with high magnetic conductivity, using the Swiss core automatic laminating machine or longitudinal and transverse shearing, multi-stage full-slant seam automatic laminating, core tying using overall pressure and PET tape tying process, effectively reducing the no-load loss and no-load current of the transformer.
5. No leakage: The oil tank and oil storage cabinet have been tested for positive and negative pressure to ensure that there will be no oil leakage during normal operation. The components are installed with a flange groove structure, and all seals are made of high-quality once-formed acrylate rubber parts to prevent il-leakage.
6. Strong short circuit resistance: The transformer coils are calculated with reasonable ampere-turn balance and semi-rigid copper wire is used. The core claiming parts are calculated for strength and stiffness to meet the safety requirements of maximum short-circuit mechanical force. The winding pads are all densified and made of high-density rigid cardboard and adopted integra set & integral pressing to ensure the accuracy of assembly and the short-circuit resistance.
Production and Manufacturing
DESIGN & MANUFACTURE PROCESS \
Based on more than 30 years of design, manufacturing, and experimental experience in the transformer industry, CEEG has developed a set of advanced three-dimensional + parametric design software, which can realize automatic design, cost optimization, and simulation.
Fully considering the requirements of the national and industrial standards, ensuring the advantageous design of products.
The high-voltage winding conductor is wound with a high-quality conductor and reinforced with long and short-cut glass fiber felt. Poured by the advanced Heidrich vacuum pouring system under vacuum. Effectively restrain the occurrence of partial discharge, and the partial discharge is ≤ 5pc.
The low-voltage winding adopts a high-quality foil conductor and is wound on an automatic foil winding machine. The foil winding machine adopts the patented technology of foil wire hydraulic energy-saving tension crimping device, high-precision detection of ±0.5mm, and advanced argon arc welding technology, which plays a key role in ensuring the quality of coil winding.
The iron core adopts a high-quality high magnetic conductivity-oriented silicon steel sheet, a 45° full oblique step lapping process, and the surface adopts special moisture-proof and rust-proof coating, which effectively reduces the no-load current and noise level.
\ TESTING \
All products strictly control the production process and quality links, and conduct strict tests and inspections according to national standards and customized requirements before leaving the factory, including partial discharge inspection, lightning resistance and electric shock inspection, noise inspection, and other necessary inspection items. Advanced test and detection equipment and a perfect inspection and detection system ensure the high quality and high quality of products.
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