35kV Three-Phase OLTC Power Transformer

Manufacturer: WEIFAN GROUP

The 35kV On-Load Tap Changer (OLTC) power transformer from WEIFAN GROUP is engineered for high-performance voltage regulation in modern power transmission and distribution networks. Featuring a tap changer developed and manufactured in-house, this transformer ensures precise voltage adjustment under load without power interruption. Designed in full compliance with IEC 60076 standards, it meets the technical and operational requirements of international markets.

Product Highlights

•Core Construction: Made from high-grade cold-rolled silicon steel sheets to reduce no-load losses and noise levels.

•Winding Material: High-quality insulated copper conductors provide excellent electrical conductivity and thermal endurance.

•Sealed Design: Maintenance-free hermetically sealed tank with a service life exceeding 30 years under normal operating conditions.

•Insulating Oil: Uses top-quality transformer oil (Grade 25# or 40#) for enhanced dielectric strength and thermal performance.

•In-House OLTC Technology: The on-load tap changer is independently developed by WEIFAN GROUP and features proprietary technology, ensuring stable and accurate voltage regulation.

Technical Specifications：

Applications

This transformer is ideally suited for:

•High-voltage substations

•Industrial power supply systems

•Renewable energy grid integration

•Urban and rural distribution networks

Advantages

•High operational reliability and extended service life

•Energy-efficient with low losses and low partial discharge

•Environmentally friendly design with reduced maintenance needs

•Customizable voltage ratings and tap ranges to meet specific grid requirements

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