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Product Name: 22kv 2000kVA on Load Tap Changing Oil Immersed Power Transformer Model NO.: SZ11-2000/22-0.4 Brand: Eacher/Shenda Shape of Core: U Frequency Characteristics: Low Frequency Usage: Distribution Transformer Certification: ISO9001 Winding Type: Two-winding Transformer Cooling Method: Oil-immersed Type Transformer Core: Core-type Transformer Phase: Three Application: Power Rated Capacity: 30-3000kVA Material: Copper Input Voltage: 6kv/6.3kv/10kv/10.5kv/11kv Frequency: 50Hz/60Hz High Voltage: 22kv Loss: Low Loss Low Voltage: 0.4kv Trademark: EACHER Transport Package: Nude Packing/Iron Case Specification: SZ11 Origin: Zhejiang Product Description Product Description22kv 2000kva three phase two winding on load tap changing oil immersed power transformerSZ11-2000/22-0.4Specifications1 power transformer2 ISO9001,ISO14001,OHSAS 18001, CE3 Apply for IEC, ANSI4.KEMAIntroduction to ProductsThe performances of our S9,S10,S11 series 20KV and 35KV three-phase oil-immersed transformer conform to standards GB1094-1996 "Power Transformer" and GB/T6451-2008 "Technical Parameters and Requirements of Three-phase Oil-immersed Power Transformer". Its core is made of quality cold-rolled silicon sheet and is of a full-miter non-puncture structure and its coil is made of quality oxygen-free copper. It is artistic in appearance and sage in running and is widely used in transmission and distribution of industrial and agricultural networks.Main Function and FeaturesHigh reliabity,advanced levelof performance,reasonable economical indicatorsThe core joints are of stepped shape with 3 steps,and the surface of the core is coated with cured paint to lower losses and noise.The winding has novel structure and its oil passage is reasonable designed. Its newly designed insulation structure helps enhance its mechanical strength and the short circuit withstanding abilityThe oil tank is in various types,all have good outlook.CertificationsCertificates owned by shenda:100MVA/220kv power transformer short circuit test report-issued by CESI Italy&CTQC China120MVA/33KV oil EAF transformer50MVA/69KV oil power transformer10MVA/33kv dry-type transformerType test report-issued by KEMA Netherlands63MVA/110KV Power transformer short circuit test report-issued by CTQC China12.5MVA/22KV Rectifier transformer routine test-issued by V-Check koreaISO 9001&ISO14001&OHSAS 18001CE-POWER TRANSFORMER&FURNACE TRANSFORMER&DRY-TYPE TRANSFORMER&REACTORTransformer CharacteristicsWinding .The winding must be especially protected - both against high electrical stress due toexternal over voltages and against mechanical overloads by short circuits. They are made of copper or aluminum. Low-voltage windings are made of strip or flat wire whilehigh voltage windings are manufactured from round or profile wire. ("diamond-dotted paper") bonds the winding into a compact blockwhile drying and increases the short-circuit capacity additionally.Magnetic Core lamination.The three-limb iron core is made of oblique cut Grain-oriented, seven-step silicon steel lamination insulated on both sides,guaranteeing low losses and low noise. These values are even improved by laser treatment. It is protected on the surface with aflash-proof varnish in order to prevent the sheet from corrosion and to reduce the noise.Oil tank.Whether during transport or operation -the tank must be absolutely tight under mechanical stress. We have vast constructional experience, the most modern calculation methods and high-quality welding work. Special attention is paid tocorrosion protection. Pretreatment of the surface is processed by phosphating pickling, contributes to corrosion protection, justlike multi-coating with preset drying times for each layer. On request, hot-dip galvanization provides for even better protectionTest labTesting are conducted for every transformer before delivery.Tests are classified to be routine tests and type test.A - Routine tests: According to IEC 60076 standard , the following tests must be carried out for all units of the transformersa- Measurement of winding resistance .b- Measurement of voltage ratio and check of phase displacement.c- Measurement of short circuit impedance and load losses.d-Measurement of no-load losses and current .e-Dielectric routine tests including the separate source AC voltage withstanding test and short duration induced over voltage withstanding test ( ACSD ) .B - Type tests :The following tests shall be carried outa- Temperature rise testb- Lightning impulse testC - Special tests :a- Determination of noise level according to IEC 60551 .b- Oil leakage testc- Overload test at 150 % rated current for one hour after temperature rise test ( top oil temperature rise and winding temperature rise must be measured and recorded in the report test also hot spot temperature rise must be calculated and recorded on the report test ) .d- Short Circuit Dynamic stability Test (test report from independent and accredited laboratory for similar transformer will be accepted).Packaging and transportationCompany IntroductionSHENDA electric group is a manufacturer and wholesale company that manufactures good & high quality electric transformers from 2000. The company provides the customized products and OEM service. The factory own the 3 production base worldwide,2 in China and 1 in USA.We also own a transformer research institute with more than 30 electric engineers .Our Services1. Pre-Sale Service- Quick response: reply you within 8 hours, to save your time.- Professional solution: supply professional completed solution base on your technical requirements, to complete your technical plan.- Quoataion: submit a competive price within 2 days, to promote your business2. In Sale Service- Supplying stipulated completed drawings- Supplying manufacturing plan and processing photos- Making the test plan and book hotel for the witness person- Making good arrangement of the delivery and shipment3. Afer Sale Service- Supplying professional supervision and commissioning within 15 days- Training the workers- Providing 12 months waranty of quality and perforanceFAQ1,Q:Are you manufacturer? A:Yes, we are manufacturer. Our factory is in JiangShanCity, zhejiang Province.2,Q:What is your delivery time ? A:Depend on the type of transformer.3,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.4,Q:Are your transformers supported for customization ? A:Yes, of course. We can design and produce accroding to the technical requirements and parameters of customers.5,Q:Do you offer guarantee for the products? A:Yes. Different transformers is different. We offer at least one year guarantee for all of our transformers.6,Q:Do you accept Factory Acceptance Test? A:Yes. It's available. And we are responsible for each set transformer's testing (ICE).7,Q:Do you assign engineer for after-sale service? A:Yes. For our products,we all provide after-sale installation instructions service
