Tanaka Electric Tanaka Electric

Oil Immersed Distribution Transformer 30kVA-2500kVA 10kv 33kv Three Phase Power Transformer for Compact Substation IEC Standard

Customization: Available
Application: Power
Phase: Three

Product Description

Basic Information
Model NO.
Oil Immersed Transformer
Core
Core-type Transformer
Cooling Method
Oil-immersed Type Transformer (ONAN)
Winding Type
Two-winding Transformer
Certification
ISO9001, CCC, CE
Usage
Power Transformer, Distribution Transformer
Power Capacity
25-2500kVA
Frequency
50Hz or 60Hz
Phases
Three or Single
Connection Symbol
Dyn11, Yyn0 (Or as Requested)
HS Code
8504210000
High-Performance Electrical Distribution Solutions

We are a professional manufacturer specializing in high and low voltage power transmission and distribution equipment. Certified under the ISO 9001 Quality Management System, we focus on delivering safe, reliable, and efficient electrical solutions for industrial, commercial, and utility applications worldwide.

Our products are extensively utilized in power generation, mining, metallurgy, smart buildings, hospitals, and major infrastructure projects across Southeast Asia, Central Asia, Africa, Europe, and North America.

Oil Immersed Distribution Transformer
Power Transformer Details
Three Phase Transformer
Core Product Advantages

1Fully Sealed Oil-Filled Design

Provides IP55 protection, offering dust resistance and defense against water jets. Features high oxidation stability with an RBOT time of ≥ 150 hours.

2High-Efficiency Step-Lap Core

Utilizes cold-rolled grain-oriented silicon steel for ultra-low noise and minimal no-load loss.

3Energy Savings & Longevity

No-load loss reduced by 45% and load loss by 10% compared to previous national standards. Typical design life is ≥30 years.

4Optimized Thermal Performance

Cooling efficiency increased by 20%~30%; overload capacity is increased by 50%.

Transformer Structure
Technical Specifications
Item Specification
Product TypeFully Sealed Oil-Immersed Distribution Transformer
ModelS11 / S13-M
Rated VoltageUp to 20kV (customizable)
Rated Capacity30–2000 kVA
Frequency50Hz / 60Hz
Cooling MethodOil-Immersed (ONAN)
Core MaterialCold-Rolled Grain-Oriented Silicon Steel
Winding MaterialCopper / Aluminum (optional)
Applicable StandardsIEC 60076, ISO, CCC
PackingExport Standard Wooden Case
Quality Certifications
Certification 1
Certification 2
Certification 3
Service & Support
Extended Protection
Rapid Response
Partnership

Extended Protection

Industry-leading warranty: 2 years for the entire unit and 5 years for key components like the core and windings.

Rapid Response

24/7 technical consultation access. Definitive solutions proposed within 48 hours of request receipt.

Global Cooperation
Customer Visit
Group Photo
Frequently Asked Questions
Q1: What is the typical lifespan of your oil-immersed transformers?
A: Our transformers are designed with high-quality materials and fully sealed corrugated tanks, typically providing a service life of 30 years or more with standard maintenance.
Q2: Can the voltage and capacity be customized?
A: Yes, we provide project-based customization for rated voltages up to 20kV and capacities ranging from 30kVA to 2500kVA to meet specific regional or industrial requirements.
Q3: How does the "fully sealed" design benefit the user?
A: The fully sealed design prevents contact between the transformer oil and the atmosphere, effectively stopping moisture and oxygen from entering the tank. This slows down oil aging and eliminates the need for an oil conservator.
Q4: What standards do your transformers comply with?
A: All products are manufactured and tested in accordance with international IEC 60076 standards, ISO 9001 quality management systems, and CCC certification requirements.
Q5: What is the protection rating and cooling method?
A: The standard protection rating is IP55, and the cooling method used is ONAN (Oil Natural Air Natural), suitable for most outdoor and indoor distribution environments.
Q6: What is the lead time for production?
A: Our current production capacity is approximately 50 pieces per week, depending on the specific model and customization requirements.

Related Products