35kv 2mva 2000kVA Oil Type Power Transformer with Oltc

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio
• Phase: Three
• Model NO.: 35kV 2MVA 2000KVA Oil type Power Transforme
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Usage: Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: High Frequency
• Shape of Core: Ring
• Brand: Taili
• Transport Package: Export Cartons
• Trademark: TAILI/OEM
• Origin: Wenzhou, China
• Production Capacity: 600units/Month

Product Description

Oil immersed power transformer
Model : Oil Immersed Type Transformers with Oltc
Product overview
This type of transformer from TAILI is equipped with OLTC for regulating the voltage in an accurate range. It can be designed from 800KVA to 31500KVA with maximum voltage 35KV and mainly used for power transmission and distribution system like power substation.
On-Load Tap Changer (OLTC) is crucial in power transformers. It precisely controls tap positions to modulate the main circuit's voltage ratio, regulating output voltage. This boosts transformer efficiency and reliability.
The OLTC has adjustable taps for changing the voltage transformation ratio. Mounted externally, it connects to primary and secondary windings through oil - filled circuits. When activated, pressurized oil enables smooth tap adjustment for voltage regulation.
In modern power systems, OLTC - equipped oil transformers are essential. Their ability to fine - tune voltage and reduce harmonic distortion makes them reliable and cost - effective across various applications, from industrial plants to urban grids.


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!)
 

Rated Power (kVA)	High  Voltage (kV)	H.V.Tap range	Low  Voltage (kV)	Connection symbol	Short Circuit Impendence (%)	No-load loss(W)			On-load loss(W)			No load current (%)
						S9	S10	S11	S9	S10	S11
800	35 38.5	±3x2.5%	6.3 6.6 10 10.5 11	Yd11 YNd11	6.5	1320	1190	1060	10500	9980	9980	1.05
1000						1570	1410	1260	12800	12160	12160	1
1250						1860	1670	1490	15400	14630	14630	0.9
1600						2250	2030	1800	18500	17580	17580	0.85
2000						2880	2590	2300	20250	19240	19240	0.8
2500						3400	3060	2720	21730	20640	20640	0.8
3150					7	4040	3640	3230	26010	24710	24710	0.72
4000						4840	4360	3870	30690	29160	29160	0.72
5000						5800	5220	4640	36000	34200	34200	0.68
6300					7.5	7040	6340	5630	38700	36770	36770	0.68
8000						9840	8860	7870	42750	40610	40610	0.6
10000						11600	10440	9280	50580	48050	48050	0.6
12500					8	13680	12310	10940	59850	56860	56860	0.56
16000						16460	14810	13170	74020	70320	70320	0.54
20000						19460	17510	15570	87140	82780	82780	0.54
25000						23700	21330	18960	107000	101650	101650	0.5
31500						27500	24750	22000	126000	119700	119700	0.45

More product:




Work shop for transformers

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.

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.
Our 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 !

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.

Delivery and Projects for reference


Certifications



ATTENTION
1.The payment term: We accept TT, with 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 a strong plywood case for protection.
4.The material of transformer: We have two types. One is with copper and the other is with aluminum. It depends on your requirement. In fact, those two are different when they are working well. The only difference is in long - term use. Copper is better and also has a higher price.
5.The logo: If you have a large quantity, it is absolutely no problem to do OEM.
6.Our market: Our products are popular in Indonesia, the Philippines, Russia, the USA, the Middle East and so on. Some of the customers there are our regular customers and some are being developed. We hope you can join us and benefit mutually from our cooperation.
7.Warranty: within 12 months since the BL date.

FAQ
Q1: Are you a manufacturer or trading company?
A1: Yes, we are a manufacturer dedicated to designing customized products according to different country standards and the production of a wide range of high-quality transformers, switchgears, and power substations. Meanwhile, we can also provide relevant accessories and components with guaranteed quality from our branch factories. We improve the design to make our products more competitive in the market while maintaining better quality to ensure long-term performance.

Q2: How does your factory handle quality control and after-sales support?
A2: All the products will be 100% checked and tested before delivery. We also have an inspection team to make videos with customers online or send them via email. All our products comply with strict tests, ensuring easy maintenance. We also offer online 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 receive your inquiry. For customized products that need special design, we will quote within 12 hours with detailed specifications for confirmation.

Q4: Can you manage the delivery directly to our country under the DIP term?
A4: Yes, we have our own logistics company that helps to find a better solution for delivery, making the delivery time more punctual and at a lower cost.

Q5: Can I get a product guarantee after delivery?
A5: Yes, every product has a 2-3 year quality warranty under the condition that customers use the products correctly.

Q6. Do you have any certificates?
A6: Yes. Each of our products has CE, 3C and CQC certificates. If you need any other certificates, we can help you apply for them.

Q7: How can I pay you?
A7: Payment by T/T and L/C is acceptable.