Oil Immersed Transformer 66kV 10000kVA

Overview
Product Overview
Technical Design, Customization & Lifecycle
Applications
Why Choose Bardeen
Technical Specifications
Frequently Asked Questions
Transportation Services & Process

Overview

Bardeen 66kV 10000kVA Oil Immersed Transformer

Operating at the boundary between sub-transmission and plant distribution, the 66kV oil immersed transformer is intended for dedicated receiving substations. It brings a 66kV supply down to the voltage required by a large facility or local distribution network, giving project owners a direct interface with the higher-voltage grid. Ratio, vector group, impedance, insulation coordination, control wiring, and protective accessories can be specified to fit the utility study and the operating practices of the receiving station

Bardeen presents the 66kV oil immersed transformer 10000kVA, a robust and efficient solution engineered to meet the evolving demands of modern power networks. As a flagship 66kV oil immersed transformer, this 10000kVA power transformer delivers reliable performance for a wide range of industrial, utility, and renewable applications. Bardeen’s decades of transformer manufacturing expertise ensure that this 66kV oil immersed transformer integrates advanced design, durable construction, and optimized operational characteristics to serve as a backbone for high-voltage distribution and renewable energy integration. Incorporating this 10000kVA power transformer into grid layouts provides a dependable anchor for both renewable energy grid transformer projects and traditional high-voltage substation equipment

Product Overview

Product Overview & Key Features

The 66kV oil immersed transformer 10000kVA is a three‑phase 10000kVA power transformer designed for 66kV systems, combining proven oil‑immersed cooling technology with modern materials and manufacturing methods

Core Highlights:
‑ A 66kV primary system enables bulk power delivery to sites beyond the practical reach of ordinary medium‑voltage feeders.
‑ The 10000kVA rating is appropriate for a dedicated plant supply or a defined regional load block.
‑ System‑study inputs can guide the selection of impedance, tapping range, and connection arrangement

The 10000kVA power transformer features conservator and breather systems, pressure relief devices, high‑quality cellulose insulation, and mineral insulating oil that together ensure reliable insulation and aging resistance under heavy loading and varied environmental conditions.

Optional Configuration:
‑ Interfaces for alarms, tripping, temperature measurement, and oil‑condition indication can be incorporated into station controls.
‑ Design submissions and test documentation can support utility review before equipment delivery and energization

Product Overview and Key Features:
The 66kV oil immersed transformer 10000kVA is a three‑phase 10000kVA power transformer designed for 66kV systems, combining proven oil‑immersed cooling technology with modern materials and manufacturing methods. This 66kV oil immersed transformer provides dependable voltage transformation, efficient load handling, and superior thermal management

Technical Design, Customization & Lifecycle

Core Design Advantages:
The core and winding design of this 66kV oil immersed transformer are optimized for low loss and stable magnetic performance. The 10000kVA power transformer uses grain‑oriented electrical steel and precision‑wound copper or aluminum conductors to minimize no‑load and load losses while improving short‑circuit impedance characteristics

Thermal and Cooling Performance:
Effective cooling is crucial for transformer longevity, and the bardeen 66kV oil immersed transformer 10000kVA employs advanced natural and forced oil circulation techniques. The 66kV oil immersed transformer’s tank design and cooling fins facilitate efficient heat transfer from windings to the external environment

Customization and Grid Integration:
Understanding that every grid and installation has unique requirements, bardeen offers customization options for the 66kV oil immersed transformer 10000kVA. Tap changer configurations, vector group selections, neutral earthing arrangements, and bushing types can be tailored to match local grid codes and project specifications

Applications and Use Cases:
The versatile 66kV oil immersed transformer 10000kVA is ideal for a broad spectrum of installations. As a 66kV oil immersed transformer, it is often deployed in transmission and distribution networks, serving medium‑to‑large industrial complexes, mining operations, and commercial centers. The 10000kVA power transformer is particularly valuable as a renewable energy grid transformer where stable voltage transformation and ability to cope with intermittent generation are essential

Manufacturing Quality and Compliance:
Bardeen manufactures the 66kV oil immersed transformer 10000kVA in IEC‑compliant production facilities with rigorous quality control measures. Each 66kV oil immersed transformer undergoes factory acceptance testing, including routine and type tests for dielectric strength, impulse withstand, temperature rise, and short‑circuit performance

Environmental and Safety Considerations:
Environmental stewardship and safety are integral to the 66kV oil immersed transformer 10000kVA design. The use of high‑performance insulating oil with controlled pour point and oxidation stability extends service intervals and reduces the frequency of oil replacement. The 66kV oil immersed transformer includes containment and leak‑prevention features to minimize environmental impact

Applications

Large‑scale Factory Substation — Primary substations for large factories and production campuses

Port & Logistics Hub — Power intake points for ports and intermodal logistics facilities

Regional Industrial Estate — Regional industrial estates with a dedicated 66kV connection

Municipal Grid Reinforcement — Grid reinforcement at growing municipal load centers

Power Generation Site — Balance‑of‑plant distribution at conventional and renewable generating sites

Why Choose Bardeen

Bardeen’s 66kV oil immersed transformer 10000kVA represents a high‑performance, adaptable, and reliable solution for modern power systems. Whether serving as a 66kV oil immersed transformer in transmission networks, a 10000kVA power transformer in industrial plants, a renewable energy grid transformer connecting variable generation, or core high‑voltage substation equipment, this transformer blends proven technology with contemporary innovations. Bardeen’s commitment to quality, customization, and technical support ensures that the 66kV oil immersed transformer delivers the performance, efficiency, and longevity demanded by today’s power infrastructure projects

Technical Specifications

Product Type	Oil Immersed Transformer
Rated Capacity	10000kVA
Voltage Class	66kV
Rated Frequency	50Hz/60Hz
Number of Phases	Three‑phase - subject to product configuration
Cooling Method	ONAN / ONAF / Optional OFAF
Installation Method	Outdoor or indoor installation
Applicable Standards	IEC 60076 / GB 1094

Frequently Asked Questions

Q1: Are your transformer accessories (tanks, cores, radiators) suitable for non‑standard transformer models? Do you support customisation based on drawingsA1: Absolutely. We are not only a manufacturer but also a provider of customised solutions. Whether you provide hand‑drawn sketches, used part samples, or PDF drawings, our technical team can produce precise CAD production drawings for you. For cores, we can tailor the stacking scheme of grain‑oriented silicon steel sheets according to your loss requirements; for tanks, we can adjust wall thickness and reinforcement structures based on insulation class

Q2: How do you ensure that the cores or clamping frames you produce match the performance of my original transformer designA2: We implement full‑process quality traceability. For cores, we strictly test flux density and specific loss to ensure they meet or even exceed national standards. For clamping frames (clamps), we pay special attention to punching position accuracy and galvanising/anti‑corrosion treatment, and provide CMM (coordinate measuring machine) inspection reports for critical dimensions, ensuring seamless installation upon receipt

Q3: What materials are used for the transformer tanks and radiators? How do you prevent rustingA3: We conventionally use high‑quality cold‑rolled steel plates (Q235B or Q345R). For rust prevention, we perform strict shot‑blasting to remove mill scale, followed by epoxy coal tar paint or polyurethane topcoat, with a dry film thickness strictly controlled above 120μm. For radiators (fin‑type radiators), we place special emphasis on internal pickling and Phosphating treatment to ensure that the transformer oil is not contaminated during circulation

Q4: Are the silicon steel sheets for the cores imported or domestic? Are the clamping frames strong enoughA4: We offer two options – Baowu Steel and Nippon Steel – to suit different budget requirements. For clamping frames (clamps), we use high‑strength steel formed in one stamping process, followed by vibration ageing treatment to relieve internal stress. This ensures that the clamps do not deform during a transformer short circuit, firmly securing the core

Transportation Services & Process

1. Heavy‑Lift & OOG Expertise

Specialized handling for Over‑Out‑of‑Gauge (OOG) cargo. We manage the entire process for heavy transformers, from custom crating and vacuum packaging to flat‑rack, break‑bulk, or Ro‑Ro shipping.

2. Customs & Compliance Management

Expert handling of complex export/import documentation, HS codes, and destination country regulations. We ensure smooth customs clearance to avoid costly delays.

3. Real‑Time Visibility & Risk Control

24/7 GPS tracking and milestone updates. Comprehensive cargo insurance covering all risks from origin warehouse to destination site.

4. Emergency Response

Prioritized air freight and expedited sea options for critical breakdowns. We minimize downtime by getting your replacement transformer or parts there faster.

Process

Assessment & Planning

We analyze the dimensions, weight, and route to design the optimal transport plan.