220kV Oil Immersed Transformer
The winding uses insulating oil as the insulation medium, so it can effectively reduce the weight of the transformer.oil-immersed transformer has a good heat dissipation effect, so as to reduce the failure caused by poor heat dissipation in the operation process.the oil-immersed transformer has a good moisture-proof performance.
Product Details:220kV Oil Immersed Transformer
Oil-immersed power transformer is an electrical appliance using insulating oil as insulating medium, composed of iron core, coil, voltage regulating switch, oil tank and transmitting AC energy. It has the characteristics of small size, cheap price and strong weather resistance.
Parameter：
Model | SSZ11-240000/220 | SF-570000/230 | SFSZ11-H-240000/220GYW |
Capacitance ratio (MVA) | 240/240/120 | 570/570 | 240/240/120 |
Ratio-voltage (kV) | 220±8×1.25%/115/35 | 220（+4×2.5%）/23 | 220±8×1.25%/115/35 |
Open circuit losses (kW) | 114.245 | 176.99 | 109.78 |
Load losses (kW) | 653.07 | 375.84 | 627.78 |
Impedance voltage (%) | 14 (High-medium) / 26.04 (High-low) / 9.37 (medium-low) | 16.23 | 13.86 (high-middle) / 23.99 (high-low) / 8.00 (medium-low) |
Oil oil temperature rise (K) | 45.4 | 49.9 | 43 |
Maximum winding temperature rise (K) | 56.7 | 52.1 | 51.8 |
No-load noise (dB (A)) | 62.8 | 70 | 70 |
Measured local level (pC) | 80 | 100 | 80 |
1.Product Overview：The 220kV transformer belongs to the high-voltage oil immersed transformer and adopts a core structure. According to the number of phases, it can be divided into single-phase transformers and three-phase transformers; According to the voltage regulation method, it can be divided into load regulation and excitation free regulation; According to the winding coupling method, it can be divided into power transformers and autotransformers; According to the number of windings, it can be divided into double windings, three windings, three windings+balanced windings. It also includes special types of 220kV transformers such as split transformers and combination transformers. The product is designed according to IEC international standards, IEEE standards, and current national standards.
2.Main Feature:
a.Low partial discharge
Using computer electric field analysis software to calculate and analyze the electric field strength of each part of the winding, strictly control the field strength of key parts, improve the electrode shape, strengthen the manufacturing process, ensure the body cleanliness, adopt high vacuum oil filling, and control the oil flow rate to ensure the oil quality and ensure that the transformer partial discharge is lower than the national standard.
Using high-quality high-magnetic silicon steel sheets, low-noise body structure and low-noise box, supplemented by advanced manufacturing technology, ensures that all types of transformer products of our company have the characteristics of low noise, and the noise level is better than the national standard.
c.Strong short-circuit bearing capacity
By using special computer software for calculation and analysis, the leakage magnetic distribution under short-circuit state is improved and the axial mechanical force is reduced. Take the overall set, constant pressure drying, control the height difference of the winding, and improve the axial stability. Reasonably select the winding form and wire specifications to reduce the electric density and improve the amplitude stability. This ensures that the transformer has sufficient short-circuit resistance
d.Strong lightning impact resistance
Using special transformer wave process calculation software, repeatedly calculate and adjust the capacitance parameters of each winding area to achieve the best match, so as to obtain the ideal impact gradient distribution and improve the transformer's lightning impact resistance.
e.No oil flow with electricity
The oil circuit structure is reasonable, and the oil flow distribution inside the body is quantitatively calculated and optimized, strictly controlling the oil flow speed not to exceed 50cm/s, and making the high flow rate avoid the high field strength part.
3.Applicable Environment:
a.Ambient temperature: maximum temperature +40℃, minimum temperature -30℃
b.Altitude: ≤1000 meters (>1000 meters, temperature rise needs to be corrected)
c.Relative humidity: ≤90% (25℃)
d.Pollution level: Level III
e.Earthquake intensity: China 12-level standard -8
Power supply voltage waveform: Approximate sine wave
f.Installation location: Installed in a place without fire, explosion danger, serious pollution, chemical corrosion and severe vibration, indoors or outdoors.
*Note: If you encounter other parameter standard usage conditions, please indicate when ordering for special consideration.
4.Technical Specifications:
IEC60076 "International Electrotechnical Commission Power Transformer Standard"
IEEE C57.12.00-2010 "Basic Requirements for Oil-Immersed Distribution, Power and Voltage Regulating Transformers"
IEEE C57.12.90-2010 "Test Standards for Oil-Immersed Distribution, Power and Voltage Regulating Transformers"
GB 1094 -2013 "Power Transformers"
GB/T 6451-2015 "Technical Parameters and Requirements for Oil-Immersed Power Transformers"
GB/T 16927 "High Voltage Test Technology"
Cases
Own Factory
Employees at Working
Transportation
Service
Power transmission and transformation services
We have built a complete industrial chain in the field of power transmission and transformation, including transformers, converter valves, switches, secondary equipment, cables, and casings. Our products are widely used in fields such as power grids, power sources, new energy, high-speed rail, subways, petroleum and petrochemical, big data centers, transportation, urban relocation, intelligent manufacturing, and 5G. We provide turnkey engineering and system solutions for more than 30 countries, including survey, design, construction, installation, commissioning, training, operation, and maintenance.
Application channels
The oil-immersed transformers of Haikun Petrochemical Co., Ltd. can be widely used in high-rise buildings, commercial centers, subways, airports, stations, industrial and mining enterprises, drilling platforms, and oil production platforms; especially suitable for use in places with high anti-inflammatory requirements and harsh environments such as flammable and explosive, and can also be used for residential areas, commercial streets, industrial and mining enterprises and rural power and lighting.
FAQ：
Q:Who are we?
A:Our production location is in Shandong Province, China, mainly producing high-quality transformer oil, vacuum oil filters, and transformers. We have business segments in Nordic, African, South American, Middle Eastern and other regions.
Q:How can we ensure the quality of transformer oil?
A:Our transformer oil will first undergo testing with a tester. It has a low pour point, excellent electrical insulation performance, excellent thermal stability and oxidation stability, and effectively prevents oil aging. Service is attentive, after-sales service is reassuring, please rest assured to purchase.
Q:What can you buy from us?
A:Sell a variety of transformer oils, classified by solidifying point or voltage level, with various categories available. High and low voltage transformers and vacuum oil filters, suitable for commercial and infrastructure construction.
Q:What are your terms of payment?
A:T/T 50% when signed contract, T/T 30% when goods are ready, T/T balance 20% before shipping out the goods.
