Tanaka Electric Tanaka Electric

Excellent Fire Resistance Oil-Immersed Power Transformer for for Prefabricated Substations

Customization: Available
Application: Power, Electronic
Phase: Three

Product Description

📋 Basic Information
Model NO.
S11
Core
Core-type Transformer
Cooling Method
Onan/Onaf
Certification
ISO9001
Usage
Power/Distribution Transformer
Frequency
50Hz/60Hz
Input Voltage
10kv-110kv
Output Voltage
440V / 400V / 480V
Rated Capacity
30-3000kVA
Standard
IEC60076
Type
Dry Type Transformer
Winding Material
Aluminum, Copper
📦 Packaging & Delivery
Package Size
725.00cm * 590.00cm * 850.00cm
Gross Weight
346.000kg
⚙️ Product Description

Definition & Structure

An oil-immersed transformer is a common power equipment that performs critical tasks such as voltage conversion and power distribution in electrical grids. It is widely used in urban/rural power grid upgrades, industrial/mining applications, combined transformers, and prefabricated substations.

Oil-Immersed Power Transformer 1
Oil-Immersed Power Transformer 2
Oil-Immersed Power Transformer 3

Key Components Include:

  • 🔹
    Core: Laminated from high-permeability silicon steel sheets.
  • 🔹
    Windings: Made of copper or aluminum wire, wound around the core.
  • 🔹
    Tank: Houses insulating oil and supports components.
  • 🔹
    Conservator: Compensates for oil volume changes.
  • 🔹
    Radiators: Enhance heat dissipation performance.
  • 🔹
    Pressure Relief: Releases excessive internal pressure.
  • 🔹
    Bushings: Provide external insulation for terminals.
  • 🔹
    Tap Changer: Adjusts voltage ratio as required.
  • 🔹
    Buchholz Relay: Detects internal faults for safety.
  • 🔹
    Insulating Oil: Primary insulation and cooling medium.
🚀 Performance Features
Performance Features
  • 1. High Efficiency: Minimal air gaps reduce losses and noise levels.
  • 2. Enhanced Reliability: Sealed construction protects insulation from environmental factors.
  • 3. Load Adaptability: Adjusts input/output currents to meet varying demands.
📊 Product Parameters
Product Name Models Features Key Parameters
Oil-immersed transformer S11 / S13 / S20 / S22 Energy saving, Low load loss, Lightning resistance, Short-circuit resistance 30-3000kva, 10kv-110kv Input, 50/60Hz, ONAN Cooling
🏗️ Main Products Showcase
Product 1
Product 2
Product 3
Product 4
Product 5
Product 6
🏭 Enterprise & Workshop

We are a high-tech enterprise specialized in the production, development, and sales of transformers and related products. With a total investment of 258 million Yuan and a registered capital of 55 million Yuan, the company employs 270 staff, including 7 senior engineers and over 110 senior technical personnel. We strictly follow the ISO9000 quality management system to provide excellent quality products.

Enterprise Profile
Workshop
📜 Certifications & Shipping
Certification
Packaging and Shipping
❓ Frequently Asked Questions
Q1: What are the primary applications for oil-immersed transformers?

A1: They are widely used in urban and rural power grid upgrades, industrial and mining operations, prefabricated substations, and combined transformers for efficient voltage conversion and power distribution.

Q2: What cooling methods do these transformers support?

A2: We offer Oil-Natural Air-Natural (ONAN), Oil-Natural Air-Forced (ONAF), and Oil-Forced Air-Forced (OFAF) systems to meet different power load and environmental requirements.

Q3: What are the main benefits of using a laminated core?

A3: The laminated core design with minimal air gaps significantly reduces energy losses and operation noise, while the near-circular cross-section improves three-phase balance.

Q4: What are the safe operating temperature limits?

A4: The top oil temperature should generally be ≤ 90°C, with 85°C recommended for long-term longevity. Alarms are typically triggered once the temperature reaches 80°C.

Q5: Can these transformers handle temporary overloads?

A5: Yes, they are designed with an emergency overload capacity of 1.1 to 1.2 times the rated current. However, it is essential to monitor temperature and reduce load if alarms persist.

Q6: Which international standards do your products comply with?

A6: Our transformers are manufactured according to the IEC60076 standard and our facility is ISO9001 certified, ensuring global quality compliance.

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