Oil Immersed Transformer 6-10kV 630kVA

Overview
Product Overview
Customization, Reliability & Lifecycle
Applications
Why Choose Bardeen
Technical Specifications
FAQ
Transportation Services & Process

Overview

Bardeen 630kVA Oil Immersed Transformer

Designed for local step-down duty at the edge of a 6-10kV network, the oil immersed transformer 630kVA provides a practical power source for compact load centers. It is well suited to projects where straightforward integration, a moderate capacity rating, and dependable everyday service are more important than an oversized installation. The unit can be engineered around the site's incoming and secondary voltages, connection group, impedance target, cable arrangement, and required protection accessories, making it suitable for both new substations and replacement work

Bardeen presents the oil immersed transformer 630kVA, a robust and efficient solution engineered to meet the rigorous demands of modern power distribution and renewable energy integration. With bardeen’s manufacturing expertise and IEC 220kV certified transformer trends capabilities, the oil immersed transformer 630kVA provides exceptional electrical, mechanical, and thermal characteristics tailored for diverse grid and industrial requirements

Product Overview

Product Overview and Key Features

The oil immersed transformer 630kVA from bardeen is a medium voltage transformer renewable storage unit designed to operate within the 6-10kV primary voltage range and deliver a rated capacity of 630kVA

Core Highlights:
‑ A 630kVA rating supports clearly defined local loads without committing the project to unnecessary transformer capacity.
‑ The oil‑immersed active part combines electrical insulation with effective heat transfer for routine distribution service.
‑ High‑ and low‑voltage interfaces can be coordinated with the switchgear, cable direction, and available installation space

The tank is fabricated from heavy-gauge steel with corrosion-resistant coatings and designed to accommodate expansion, conservator systems, and accessories such as Buchholz relays, oil level indicators, temperature gauges, and pressure relief valves. Bardeen’s oil immersed transformer 630kVA integrates proven cooling methods, including ONAN (oil natural air natural) and optional ONAF (oil natural air forced), to maintain reliable thermal regulation under varying load conditions.

Optional Configuration:
‑ Temperature indication, pressure protection, oil‑level monitoring, and terminal accessories may be selected to match the operating plan.
‑ The design can be prepared for 50Hz or 60Hz systems and for indoor or outdoor placement, subject to the final project specification

Innovations and Design Advantages: The core and coil assembly is precision-engineered to reduce no-load losses and noise emissions, delivering improved energy efficiency compared to conventional designs. The oil immersed transformer 630kVA functions as a reliable 6-10kV grid substation transformer, employing advanced paper and oil insulation systems treated for enhanced moisture resistance and thermal endurance. Enhanced sealing technologies and degassing processes reduce oxygen ingress and oxidation, prolonging insulating oil life and maintaining dielectric strength

Technical Superiority and Performance Metrics: Low impedance, tight voltage regulation, balanced thermal characteristics, and excellent short-circuit withstand capability allow this unit to excel. Subject to routine and type tests aligned with international standards and IEC 220kV certified transformer trends, this 6-10kV grid substation transformer supports frequency regulation, load shifting, and reactive power compensation as a specialized medium voltage transformer renewable storage solution

Customization, Reliability & Lifecycle

Customization and Compliance: Bardeen offers tailored configurations for the oil immersed transformer 630kVA, including tap changer options (on‑load and off‑load), corona‑free high‑voltage bushings, special winding arrangements, and noise mitigation packages. The unit can be customized to meet site‑specific clearance, seismic, and climatic requirements, ensuring compatibility with global grid standards and harmonized protection schemes for renewable storage applications

Reliability and Lifecycle Considerations: Rigorous material selection, automated winding processes, vacuum impregnation for insulation stability, and high‑precision assembly minimize manufacturing variability

Installation, Operation, and Maintenance: Installation follows standard substation and distribution practices covering foundation, oil containment, earthing, and phased commissioning. Comprehensive documentation, FAT records and recommended maintenance schedules are provided. Periodic oil testing, thermographic inspections, tap‑changer servicing are advised

Environmental and Safety Considerations: Oil containment strategies and secondary barriers mitigate spill risks. Environment‑friendlier fluids are optional for low flammability requirements. Manufactured under stringent quality systems to comply with local environmental regulations and international safety norms

Applications

Applications and Deployment Scenarios

Utility Distribution Networks — Neighborhood and small commercial distribution substations

Industrial Facilities — Workshops, warehouses, and light manufacturing facilities

Agricultural Sites — Irrigation stations, farms, and agricultural processing sites

Municipal Projects — Water pumping, drainage, and municipal service installations

Renewable Energy — PV farms, wind power substations and battery energy storage system interconnection

Retrofit & Replacement — Capacity upgrades or replacement of aging local transformers; Microgrid and distributed energy resource projects

Why Choose Bardeen

Selecting the oil immersed transformer 630kVA from bardeen means choosing experience, quality, and global compliance. Bardeen’s background in IEC‑certified transformer manufacturing ensures that medium‑voltage installations and renewable storage projects receive dependable equipment. With an emphasis on customization, technical support, and proven field performance, bardeen stands ready to deliver the oil immersed transformer 630kVA for projects ranging from urban distribution networks to large‑scale renewable storage and 6‑10kV grid substation solutions

The oil immersed transformer 630kVA is a versatile, efficient, and resilient solution for medium voltage power distribution and renewable integration. As a 6‑10kV grid substation transformer option, it provides stable voltage transformation, low losses, and robust insulation systems tailored for demanding operational environments. Leveraging bardeen’s manufacturing excellence and IEC‑certified experience, the oil immersed transformer 630kVA supports future‑ready grids, enabling reliable renewable storage connections and long‑term serviceability

Technical Specifications

Product Type	Oil Immersed Transformer
Rated Capacity	630kVA
Voltage Class	6‑10kV
Rated Frequency	50Hz/60Hz
Number of Phases	Three‑phase - subject to product configuration
Cooling Method	ONAN / Optional ONAF
Installation Method	Outdoor or indoor installation
Applicable Standards	IEC 60076 / GB 1094

FAQ

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.