Transformer specification :
1,Iron core
1. The iron core adopts cold-rolled crystal-oriented silicon steel plate 30Z140 with high quality, low-loss, and no time effect, sheared by Geroge line and with no burr. 1.2 Iron core adopts pulling board structure, the upper and down yoke is clamped by board, to form the frame structure. The iron core adopts advanced lamination process, which effectively controls the no-load loss and electro-magnetic noise.
2 Winding
2.1 Winding adopts mature structure, which ensure the reliability of transformer operation.
2.2 The insulation power field intensity between turns shall be controlled no greater than 1.6kV/mm.
3,Body
3.1 Body adopts mature insulation structure, and strictly guarantee the main axial insulation margin.
3.2 Body mostly adopt multi-coil whole assembly, processed in constant voltage and evaporation, which made coil shrink evenly and with less rebounce, and enhance the electric strength and mechanical strength.
3.3 Adopt laminating wood board or thermal shaped insulation cardboard. Pressed tightly with pin, which ensure the winding is constantly pressed tightly.
4,leading wire
4.1 The layout of all leading wire is reasonable, which guarantees the enough electric distance and mechanical strenth.
4.2 All leading wire is cirlulized ,which guarantee the reliable wild or prize connection.
5.2 Pipeline with gas relay such as the oil tube and bushing hoist support on top of oil tank is with hoist gradient, to facilitate the gas in transformer flow to gas relay.
5.3 Vacuum oiling is adopted, there is no leakage and permanent distortion in the following test. vacuum-pumping :759mmHg load voltage test: bear 2 times the oil pressure of oil conservator oil surface for 24 hours.
5.4 The structure of transformer is convenient for disassembly and change of bushing and porcelain element.
5.5 The oil drip valve is set on the bottom of oil tank, sampling valve is set in the middle.
5.6 collective gas connecting tube is fixed on the bushing hoist support.
5.7 Transformer is of full-sealed structure, the upper and down oil tanks are required to welded fully.
6,Oil conservation tank
6.1 Adopt capsule type, finger type oil level indicator oil conservation tank.
6.2 The structure is convenient for internal cleaning, the capacity can ensure no oil overflow in 40 ambient temperature with full load, and oil shall be seen from oil level indicator before put into operation in 25
6.3 Oil conservation tank is equipped with oil-sealed moisture absorber.
7,Safety protection device:
7.1 Gas relay is fixed in transformer, the standard complies with ZBK41004-89Gas relay.
7.2 There is enough and reliable pressure release device, and matched with oil spray pipe, the direction of oil spraying is downward.
8 Oil temperature measuring device:
8.1 There is pipe support of mercury thermometer, which is set on the top of oil tank.
220kV Combined Power Transformer(Two-Winding)
Voltage: 220+ - 2x2.5%/121/37
Connection group: YNd11
Winding combination: H--L
No-load current(%): 0.5
No-load loss(kW): 53
On-load loss(kW): 226
lmpedance(%): 13.32
Weight of active part(kg): 3 28290
Transport weight(kg): 3 35000 (filling with nitrogen)
Transport dimension (L W H mm): 3300x2480x2950
Capacity: 120000kVA
SFPS8-X-120000/220 MVA 120/120/60 | Cooling method |
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| Winding | Connection | OLTC Position | Voltage |
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| (kV) | Current A |
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| (ONAN) | Current A |
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| (ONAF) |
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| HV | Star | 1 | 207 | 529.9 | 892.5 |
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| 9 | 230 | 176.9 | 803.3 |
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| 17 | 253 | 433.6 | 730.2 |
| LV | auto | 9 | 132 | 831 | 1400 |
| Tertiary | Delta | 9 | 20 | 685.5 | 1155 |
| 7. Vector Group YN d11 |
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| 8. Impedance Voltage in Percent at 75 |
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| Power MVA | winding | Rated voltage kV | Impedance voltage % |
| 40 | HV/LV | 230/132 | 18 |
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| 9. No-load Current: 0.2%: |
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| 10. Sustained Short Circuit Current. |
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| Winding | Max. Sustained Short-circuit Current. Ka |
| HV | 8.5 |
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| LV | 10.4 |
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| TV | 19 |
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| 11. Max. Duration of Short-circuits in Seconds(s) |
| HV: 3s |
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| LV: 3 s |
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| TV: 3s |
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Vector Group YND11
No-load losses 80kw
Load losses 383kw
No load current % 0.2
Short-circuit impedance% HV-LV 12-14
Packing and Shipping
Service Guarantee - To provide all technical information and drawings as per contract promptly. VILLE is obliged to invite client, if necessary, to attend technical design review.
- To carry out spot technical service as per client's schedule, offer guideness for installation and commissioning according to technical information and drawings.
- For relevant auxiliary equipment procured by customers, VILLE will provide relate technical information to meet requirement of equipment interface.
- To execute stipulations in MOU or agreement signed by seller and buyer strictly.
- To train staff from client for equipment installation, commissioning, application, maintenance as stipulated in the contract.
- To reinforce pre-sales, mid-sales, after-sales service, to carry out "24-hour service", "service in advance", "overall process service", "lifelong service" in our manufacturing, installation, commissioning and maintance.
- To meet spare parts' requirement by customers at anytime.
Order InstructionsWhen you choose our company product, please offer following data:Transformer model: Rated capacity: kVAPhase : Three-phaseFrequency : 50HZRated voltage ( H.V. / L.V. ): Tapping range: ± × %Insulation level: LI AC / LI AC kvVeotor group: Dyn11 Yyno OtherShort-circuit Impedance: %Cooling method: ONAN ONAFTapping method: OLTC OCTC OtherOther requirement: Notes: - We also can design special products according to customer's particular requirements.
The final dimension is subject to outline drawing.
Ningbo Ville Electric Co., Ltd. One of wholly owned subsidiaries of VILLE INDUSTRY, It was invested by VILLE INDUSTRY, It is a well-know listed company in China specialized in R&D of electric power technology, equipment manufacturing and engineering services specialized in research, development, production of transformer and high voltage & low voltage electrical power equipment
Our Transmission and distribution companies can provide with whole solution for transformer substation and switch substation trunkey project!
The rated voltage from 11kV up to 132kV.
It locates in Hi-technical enterprise R & D center zone of Ningbo, Zhejiang province, which is one of the well-know coastal city in China. Its professional engaged in power substation, power plant project and electrical power complete equipments.
Working field: Manufacturing, engineering, designing, executing and commissioning for HV and LV electrical products. Turnkey substation from 11KV to 132KV.
Our transformer factory main working is visiting end user's site do measure and reseach before designe, and providing economic transformer solution for customer. Engineering, manufacturing, executing, commissioning and repairing for different kind of transformer (04kv -500kv ).
The products are mainly used in Steel plant; Power - Fossil fuel plant, Nuclear power plant, Railway, Subway and Airport. Wind power generation; Hydroelectric plant engineering; International power generation plant; Power substation transmission and distribution; Residential housing estate power distribution system and so on.
Transformer factory Product includes:
Three phase double (three)- winding power transformer, generator power transformer, auto power transformer, rectifier transformer for each industry, furnace transformer, movable transformer, traction transformer and reactor, power plant auxiliary and standby transformers, transformers for substations of backbone and distribution networks. Transformer for metallurgical companies etc.
In order to achieve the enterprise's strategic target---being stronger, larger, and superior, we continue to expand throughout the world's markets for power transmission and distribution area. And we also actively attach our team to competition, walking forward to the mission of "First-class worldwide transformer supplier"
Supply the guide drawings and installation manuals information directions on the method of handling, storage, mounting and erection of transformers.
Power equipment application:
Power-fossil fuel plant, Steel plant, Infrastructure- railway, international generation, substation, hydropower station, wind power substation, transmission and distribution.
We has excellent experience and good capacity in complete projects equipments in Generation, Substation, Transmission and Distribution from 400V-330kv, especially in Power plant, Substation construction and Transmission line, including of design, complete equipment, installation, Commissioningand after-sales service, and also design the complete Electrical Solutions according to customer's demand. We are mainly services to International State Power Board, Power Construction Contractor, Power Project Contractor, Factories and the Electric Power Project in the world.
In order to achieve the enterprise's strategic target---being stronger, larger, and superior, we continue to expand throughout the world's markets for power transmission and distribution area. And we also actively attach our team to competition, walking forward to the mission of "First-class worldwide electrical equipment supplier"
