Copper Wound Oil Immersed Distribution Transformer with Full Sealing for Industrial Power Distribution

• 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: Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Brand: Taili
• Rated Capacity: 50kVA-4500kVA
• High Voltage: 6kv-36kv(or Others)
• Tap Voltage: ±5%,±2*2.5%
• Low Voltage: 380V-433V
• Vector Group: Yyn0,Dyn11,Dyn5
• No-Load Loss: 104W-3456W
• Load Loss: 870W-28800W
• Short Circuit Impedance: 4%-5%
• Transport Package: Export Wooden Case
• Specification: Customizable
• Trademark: TAILI
• Origin: Wenzhou China
• HS Code: 85043190
• Production Capacity: 1000/Month
• Package Size: 180.00cm * 90.00cm * 180.00cm
• Package Gross Weight: 2000.000kg

Product Description

                                                    Oil Immersed Distribution Transformer                                                                                                                                      50kVA – 3150kVA | 6kV – 35kV | 50/60Hz | ONAN Cooling 

are designed for step-down applications from medium voltage (6kV–35kV) to low voltage (380V–600V), suitable for both indoor and outdoor installation.

Applications:

* Power grids and substations
* Commercial buildings and shopping malls
* Industrial factories and mining operations
* Residential communities and rural electrification
*  Railways and shipping

Product Description

Core

Oil Tank with Corrugated Heat Sinks

• High-permeability grain-oriented cold-rolled silicon steel

• Stepped circular cross-section for reduced losses

• Tightly-stacked laminations form a continuous magnetic path

• Enhances energy efficiency and load-handling capacity

• Efficient cooling – corrugated sinks increase surface area for natural oil circulation

• Mechanical protection – sturdy casing protects internal components

• Low maintenance – adapts to oil volume changes

• Compact design – improves installation flexibility

Key Features

1. Insulation & Reliability: High-quality insulation system for reliable operation

2. Structure & Installation: Compact structure – easy installation and maintenance

3. Flexibility: Multiple voltage output options for supply flexibility

4. Durability: Robust construction for longevity

5. Noise: Low noise – minimal environmental interference

6. Cooling: Corrugated tank design with integrated heat sinks

Certifications

Specification

Customization Service

Need specific voltage, capacity, or protection class? Contact us. Our team will conduct on-site surveys to identify your application scenario (power/railway/mining), technical parameters, and environmental requirements (temperature/humidity/outdoor) – then deliver a tailored solution.

Capacity (kVA)	High voltage (kV)	Low voltage  (V)	Vector Group	No-load loss (W)	Load loss (W)	No-load current (%)
50	6 6.3 10 10.5 11 13.8 15 20 24 30 33 36 or others	380 400 415 433 or  others	Dyn11 Yyn0	104	870	2.0
80				144	1250	1.9
100				160	1500	1.8
125				192	1800	1.7
200				272	2600	1.5
250				320	3050	1.4
315				384	3650	1.4
400				456	4300	1.3
500				544	5100	1.2
630				648	6200	1.1
800				784	7500	1.0
1000				920	10300	1.0
1250				1088	12000	0.9
1600				1312	14500	0.8
2000				2016	17820	0.4
2500				2376	20700	0.4
3150				2520	24300	0.4
4500				3456	28800	0.4

Packaging & Shipping

Company Profile

                                                                  TAILI ELECTRIC CO.,LTD                                                                                        Professional Manufacturer of  Transformers, Switchgear & Vacuum Circuit Breakers

TAILI ELECTRIC CO., LTD.

Founded in 1988 | Over 35 years of expertise

We specialize in

•Dry type transformers

•Oil-immersed transformers

•Compact substations

•Switchgears 

•Vacuum circuit breakers

Application:

Power grids, railways, mining, factories, commercial buildings, and residential communities.

After Sales Service

 Professional Technical Support

Comprehensive After-sales Guarantee

 Customized Training and Maintenance

We provide 7×24-hour technical consulting services, with a professional technical team offering remote guidance for product installation, commissioning, operation and maintenance. If on-site problems occur, engineers can be arranged to provide cross-border on-site assistance to quickly resolve technical issues.

All products come with a standardized warranty service. Free repair or replacement of parts is available for non-human damage during the warranty period. We also offer extended warranty packages to meet customers' long-term quality assurance needs for usage.

According to customers' actual operational needs, we customize special training courses (online ) for product use and maintenance, helping customer teams master equipment operation and maintenance skills. Regular equipment inspection services are also provided to identify potential faults in advance and ensure stable equipment operation.

Exhibitions

ATTENTION

Item	Details
Payment Term	T/T, 30% deposit + 70% balance against BL copy
Delivery Time	15–20 working days
Packaging	Strong plywood case
Warranty	24 months from BL date
Material Option	Copper or aluminum (copper recommended for long-term performance)
OEM Service	Available for large quantities (custom branding, design, packaging)

FAQ

Q1: Are you a manufacturer or trading company?

A: We are a manufacturer. We design customized products according to different country standards and produce high-quality transformers, switchgears, and power substations. We also provide relevant accessories and components with guaranteed quality.

Q2: How does your factory handle quality control?

A: All products are 100% checked and tested before delivery. We have an inspection team that can conduct online video inspections with customers. Test reports and videos are available upon request.

Q3: When can I get a price quote?

A: For standard products, we quote within 1 hour after receiving your inquiry. For customized products requiring special design, we provide a detailed quote within 24 hours.

Q4: Can you manage delivery to my country under DDP or DAP terms?

A: Yes. We work with our own logistics partners to provide competitive shipping solutions, ensuring punctual delivery and lower costs.

Q5: What is your product warranty?

A: Each product comes with a 24-month quality warranty under normal use conditions. Extended warranty packages are also available.

Q6: What certificates do you have?

A: Our products have CE, CCC, and CQC certificates. Other certifications (such as ISO, SGS) can be arranged upon request.

Q7: What payment methods do you accept?

A: T/T (bank transfer) and L/C (letter of credit) are both acceptable.