Ningbo Ville Electric Co., Ltd.  

Product Name: 220kv 161kv 69kv 33kv Power Transformer Distribution Transformers Power Substation up to 320mva Model NO.: S10 220KV Brand: Ville Shape of Core: Ring Frequency Characteristics: High Frequency Usage: Power Transformer Certification: ISO9001-2000, UL, ISO9001, CCC Winding Type: Auto-transformer Cooling Method: Oil-immersed Type Transformer Core: Core-type Transformer Phase: Three Application: Power, Electronic, Instrument, Furnace Test Certification: Kema Transformer Test Voltage Range: 420kv Rated Power: 320mva Power Definition: Power Constant on All Tapping of The on-Load Tap Trademark: vilLE Transport Package: Wooden Cases Specification: IEC Standard Origin: China HS Code: 8504231200 Product Description Structure characteristic:1,Iron core1. 1The iron core adopts cold-rolled crystal-oriented silicon steel plate 30Z140 with high quality, low-loss, and notime effect, sheared by Geroge line and with no burr. 1.2 Iron core adopts pulling board structure, the upperand down yoke is clamped by board, to form the frame structure. The iron core adopts advanced laminationprocess, which effectively controls the no-load loss and electro-magnetic noise.2 Winding2.1 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,Body3.1 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 madecoil 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 ensurethe winding is constantly pressed tightly.4,leading wire4.1 The layout of all leading wire is reasonable, which guarantees the enough electric distance and mechanicalstrenth.4.2 All leading wire is cirlulized ,which guarantee the reliable wild or prize connection.5,Oil tank5.1 Oil tank adopts structure of flat top, bell jar type, which add the mechanical strength of oil tank and alsomake the appearance beautiful and graceful, site installation tend to be more convenient.5.2 Pipeline with gas relay such as the oil tube and bushing hoist support on top of oil tank is with hoistgradient, 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 tank6.1 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 ambienttemperature 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 oilspraying 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.8.2 There is temperature controller, the accuracy of thermometer complies with the related standard. Quantityand technical requirement shall as per tender document.9,Each component of transformer shall be prefabricated once in manufacture factory, marked, to ensure thesmooth procedure of site assembly. Before Ex-factory, inner core shall be check, and clean the fifth intransformer.Technical parameters:Cooling methodWindingConnectionOLTC PositionVoltage(kV)Current A(ONAN)Current A(ONAF)HVStar1207529.9892.59230176.9803.317253433.6730.2LVauto91328311400TertiaryDelta920685.511557. Vector Group YN a0 d118. Impedance Voltage in Percent at 75Power MVAwindingRated voltage kVImpedance voltage %320HV/LV230/132189. No-load Current: 0.2%:10. Sustained Short Circuit Current.WindingMax. Sustained Short-circuit Current. KaHV8.5LV10.4TV1911. Max. Duration of Short-circuits in Seconds(s)HV: 3sLV: 3 sTV: 3sOur Best Service For You1.Pre sale servicea.make technical solutionb.send quotation, technical data sheet and drawingc.prepare power transmission plan, testing plan and shipment plan2.In sale servicea.supervise the manufacturing schedule totally in accordance with the planb.send photos to customer during every manufacturing process(hold point)c.inform the customer one week before testing.3.After sale servicea.installation and commissioning, training the workersb.quick response within 12 hours any timec.provide 12 months guarantee period normally.FAQ For You1. Q:What is your delivery time ?A:Depend on the type of transformer.2. Q:What is your payment term?A:30% advance by T/T , 70% before delivery by T/T or L/C or we can discuss about it.3. Q:What kind of standard you follow?A:IEC, ANSI, CSA, GB, etc4. Q:What kind of supporting documentation you can provide normallyA:Quotation, outline drawing, manufacturing plan, quality control plantesting plan, financial report, type test report(KEMA, CESI),reference list, etc5. Q:What is your normal warranty period?A:12 months after transformer operation.6. Q:Can u do installation and commission in user's site?A:Yes, we can send our installation team to user's country for service.7. Q:Do you have any experience in this kind of transformer?A:Yes, we can provide reference list for check.