Hermatically Sealed Transformers

Fully sealed design, preventing moisture and contaminants
Long operational lifespan
Reliable performance in extreme environmental conditions
Exceptional energy efficiency and minimal energy loss
Reduced maintenance needs
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Durable Hermetically Sealed Transformers

Transformers without protectors can be characterized as hermetically sealed transformers. The transformer oil tank has an insulating medium that is totally enclosed and airtight. This design can prevent air from entering the transformer oil tank, thus preventing corrosion and siltation in the medium liquid. The oil transformer is sealed. Typically, they use a closed water tank with expandable fins to handle temperature variations in the transformer.

The air in the sealed transformer cannot enter the oil tank. The electrical characteristics are not affected and do not change, which will last a longer life of the transformer. These transformers are sealed and maintenance-free, and are specially designed for use in harsh outdoor environments, such as humid or dusty atmospheric conditions.

Technical Specifications

  • Range Up to 5 MVA
  • Voltage Class 33 KV
  • Cooling ONAN / AF
  • Taping OFF Load Tap Changer /
    ON Load Tap Changer

Properties

  • Completely Sealed Construction

    Used for switching currents to convert DC into AC.

  • Oil Expansion System

    Facilitates the step-up voltage conversion for grid compatibility.

  • Corrosion-Resistant Tank

    Protects the system from electrical faults.

  • Minimal Maintenance

    Essential for converting AC to DC and vice versa in the inverter process.

  • Enhanced Dielectric Strength

    Control and regulate electrical signals within the system.

  • Explosion and Leak-Proof Design

    Built for high-pressure resistance, reducing risks in high-voltage applications.

Advantages
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Advantages

Hermetically sealed transformers offer numerous benefits, making them ideal for demanding applications:

  • Contaminant Protection

    Airtight design prevents exposure to atmospheric pollutants, ensuring long-term stability.

  • Low Maintenance

    Minimal upkeep reduces operational expenses over time.

  • Leak-Proof & Safe

    Sealed structure eliminates oil leakage, improving safety and reducing environmental impact.

  • Durable Performance

    Designed for tough environments, delivering consistent and durable performance.

Key Benefits

  • Renewable Energy Systems

  • Industrial and Harsh Environments

  • Underground and Substation Installations

  • Healthcare & Critical Infrastructure

  • Oil & Gas Facilities

  • Smart Grids & Utility Networks

Powering Innovation

Reliable Transformer Solutions for Every Industry

55+

Years of expertise in designing high-performance transformers with innovation.

7+

Transformers Tailored for quality and performance across industries.

100+

Clients Relying on our transformers for consistent performance and innovation.

200+

Skilled Professionals Delivering exceptional transformer solutions across various industries.

Powering Innovation

Reliable Transformer Solutions for Every Industry

55+

Years of expertise in designing high-performance transformers with innovation.

7+

Transformers Tailored for quality and performance across industries.

100+

Clients Relying on our transformers for consistent performance and innovation.

200+

Skilled Professionals Delivering exceptional transformer solutions across various industries.

Transformer
Frequently asked questions

These transformers are ideal for solar farms and wind energy plants because their sealed design prevents moisture ingress and ensures efficient, maintenance-free operation in outdoor environments.

Their compact, leak-proof design makes them perfect for metro systems, tunnels, and underground power grids, where space constraints and minimal maintenance are critical factors.

Yes, their corrosion-resistant construction allows them to function reliably in chemical plants, mining operations, and offshore platforms, where exposure to harsh elements is common.

They provide stable, uninterrupted power with zero risk of oil leaks, making them ideal for mission-critical infrastructure like hospitals and data centers that demand high reliability.

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