35kv Electric High Voltage Oil-Immersed Power Distribution Transformers

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Rectifier
• Phase: Three
• Model NO.: S11
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Brand: Taili
• High Voltage: 6~10kv~35kv
• Low Voltage: 0.4kv
• Vector Group: Dyn11,Yyn0
• Short Circuit Impedance: 4%~4.5%
• Transport Package: Export Cartons
• Trademark: TAILI/OEM
• Origin: Wenzhou China
• HS Code: 8504319000
• Production Capacity: 1000units/Month

Product Description

Oil immersed power transformer

Product overview
Oil-immersed power transformers from TAILI are designed for high voltage power grids for the exchange of electrical energy, its mainly installed in outdoor regional substations, and voltages up to 66 kV and above. Due to the high voltage and big capacity, they are usually equiped with efficient cooling system and regulating systems, as well as with a variety of detection systems, to adapt to the needs of high-voltage grid transmission and to ensure safety.

Features
1. Quality assurance for direct supply of key materials, like core(which made directly from TAILI by high quality cold-rolled silicon steel sheet) and insulation materials(which are strictly selected by our quality control center)
2. Corrugated type tank: automatic welding, zero leakage rate, strong corrosion resistance
3. Positioning device for active-part: free core suspending, maintenance-free, safe and reliable
4. Dedicated automatic winding machine to ensure coil quality
5. Design with multiple shock absorption and noise reduction measures to ensure low operation noise
6. Special structural design and material selection to ensure strong short circuit resistance
7. On load tap changer(OLTC) with independent property rights.

Standard specification
1.Applicable specification: IEC 60076 /IEEE
2.KVA: up to 31.5 MVA
3.Primary voltage: up to 66kV
4.Secondary voltage: 0.4/6.3/10.5/35 kV or customized
5.Temperature rise: 65°C
6. Cooling method: ONAN/ONAF
7.Frequency: 50Hz/60Hz
8.Taps voltage: ±2*2.5%/±3*2.5%/±8*1.5% or customized
9.Connection symbol: Yd11,YNd11
10.H.V.Tap range: ±3x2.5%

Structure

Core
1.Structure: Core is made of high permeability grain oriented cold-rolled silicon steel. The core of the new core, miter joints convolution type iron core, its legs of circular cross section multi-step, the yoke and the core of constant section.
2.Benefits: The design boosts energy efficiency and load-handling capacity. The tightly-stacked laminations form a continuous magnetic path, which is crucial for the transformer's performance.

Tank
The oil-filled tank, made of steel, houses the core and windings. Its advantages include withstanding operational pressure and temperature changes, as the oil within acts as both coolant and insulator. Accessories like radiators dissipate heat, the oil conservator maintains oil level, and the pressure relief valve safeguards against overpressure.

Oil Conservator
The oil conservator, usually a cylindrical or rectangular metal container, connects to the main tank via inlet and outlet pipes and has a breather pipe with a drying device. It compensates for oil volume changes due to temperature, reduces oil-air contact to slow oxidation, and prevents moisture ingress, thus maintaining oil insulation and extending transformer lifespan.

Performance parameters
(It can be customized according to customer's local demand!)
35kV Three-phase Double Windings Power Transformer with NLTC

Rated capacity(kVA)	Voltage combination and range of tapping			Vector group	No-load loss(kW)	Load loss(kW)	No-load current (%)	Short circuit impedance(%)
	HV(kv)	rangeof tapping	LV (kv)
2000	35/33	±3×2.5%	11     6.3     10.5	Yd11	2.3	19.2	0.5	6.5
2500					2.72	20.6	0.5
3150					3.23	24.7	0.5	7
4000					3.87	29.1	0.5
5000					4.64	34.2	0.5
6300					5.63	36.7	0.4	8
8000				YNd11	7.87	40.6	0.4
10000					9.28	48	0.35
12500					10.9	56.8	0.35
16000					13.1	70.3	0.35
20000					15.5	82.7	0.3
25000					18.3	97.8	0.3	10
31500					21.8	116	0.3

35kV Three-phase Double Windings Distribution Transformer with NLTC

Rated capacity(kVA)	Voltage combination and range of tapping			Vector group	No-load loss(kW)	Load loss(kW)	No-load current (%)	Short circuit impedance(%)
	HV(kv)	rangeof tapping	LV(kv)
50	33/35	±2×2.5%	0.4	Dyn11	0.16	1.2	1.3	6.5
100					0.23	2.01	1.1
125					0.27	2.37	1.1
160					0.28	2.82	1
200					0.34	3.32	1
250					0.4	3.95	0.95
315					0.48	4.75	0.95
400					0.58	5.74	0.85
500					0.68	6.91	0.85
630					0.83	7.86	0.65
800					0.98	9.4	0.65
1000					1.15	11.5	0.65
1250					1.4	13.9	0.6
1600					1.69	16.6	0.6
2000					1.99	19.7	0.55
2500					2.36	23.2	0.55

Performance Parameters
(It can be customized according to customer's local demand!)

More Product:
 https://tldq5978.en.made-in-china.com

Work Shop for Transformers


Delivery for reference


Ex-factory Quality Assurance

1. Routine test:Measurement of winding resistance,Measurement of voltage ratio,Check of vector group,Mesurement of impendance voltage and load loss,Measurement of no load loss and current,Separate-source voltage withstand test,Induced overvoltage withstand test,Dimension checking
2. Type tests:Lighting impulase test,Temperature rise test
3. Special tests:The company is accelerating the cultivation and development of productivity, and creating high-level intelligent production.

Know More About Our Company
 

Define-TAILI
Total Solution is how we define "TAILI". From design & customization, engineering, manufacturing installation, and after sale service. TAILI provides a Total Solution to our customers helping and supporting to give them a competitive advantage in their market.
 
    TAILI founded in 1988,is one of the largest and most respected manufactures of MV power distribution products in WENZHOU of China, the "Electric Industry Center" of China.We have factories for manufacturing, research &development, and distribution of products: Transformers, Indoor&outdoor switches, Switchgears, Power substations, and electric components  for transformer and switchgears.
 
   Our mission at TAILI is to provide the highest quality products at the best possible price. And by doing so, to provide and unmatched customer experience and actively to establish long-term cooperative relationship with our new and old customers.

Our Advantages
Design Ability:Our design team can combine the needs of customers from East Europe, Africa, South America, the Middle East, Southeast Asia and other countries to customize transformers for different local market demand. As a Chinese manufacture with more than 25 years' experience We can produce transformer with European quality at a very competitive price, and perfect replacement of imported products from Europe, so that users can use high-quality power products with the lowest cost to get more advantage in their market.

Efficiently Service: With 15 years of experience in electrical line, we are committed to providing comprehensive technical supports , design  and customized solutions for our partners .And provide timely service  for each step within 24 hours from design ,production, logistics, equipment installation ,to ensure  clients with an efficiently and smooth operation of the projects! Partners recognition is the motivation and encouragement for us , we attach importance and persue to give one-stop service !

Certifications



Attention
1. The payment term: We accept TT,30% deposit and 70% balance against copy of BL.
2. The delivery time: Usually it will take about 15-20 days.
3. The standard of package: Usually use strong plywood case for protection.
4. The material of transformer: We have two types, one is with copper and another one is with aluminum. It depends on your requirement. In fact, those two have difference if normal work well. Only except the long life. Copper is better and also higher price.
5. The logo: If you have good quantity, it absolute no problem to do OEM.
6. Our market: our products are popular in Indonesia, Philippines, Russia, USA, Middle East and so on. Some of them are our regular customers and some of them are developing. We hope you can join us and make mutual benefit from our cooperation.
7. Warranty: in 12 month since BL date.

FAQ
Q1: Are you a manufacture or trading company?
A1: Yes, we are manufacture dedicated to design customized for different country standard and production of a wide range of high quality transformers, switchgears, power substations. Meanwhile we can also provide relevant accessories and components with quality guaranteed from our branch factories.  We improve the design to make our products more competitive for the market but with better quality to ensure the long time performance.
Q2: How does your factory do regarding quality control and after-sales support?
A2: All the products will be 100% checked and tested before delivery. We also have inspection team to make videos with customers online or by email. All our products comply to strict tests, easy maintenance guaranteed. We also offer on-line after-sale service in case of any further problems.
Q3: When can I get the price?
A3: Usually we quote within 1 hour after we get your inquiry. For customized products that need special design, we will quote within 12 hours with details specification for confirming.
Q4: Can you manage the delivery directly to our country with DIP term?
A4: Yes, we have our own Logistics company that help to find a better solution for delivery and that make the delivery time more punctual and in lower cost.
Q5: Can I get guarantee of products after delivery?
A5:  Yes, every product is 2-3 year quality warranted under customer correct using the products.
Q6. Do you have any Certificate?
A6: Yes. Each of our product has CE, 3C and CQC certificate. If you need any other Certificate, we can help you to apply it.
Q7: How can I pay you?
A7: The payment by T/T and L/C is acceptable.