Open Ventilated Dry Type Transformer

The open ventilated dry type transformer is designed for reliable voltage transformation. Its open construction allows for natural air cooling, enhancing thermal performance.

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VPI Open Ventilated Dry Type Transformer - Image 1

Technical Specifications

Product Overview

High-Performance VPI Dry-Type Transformer

This Open Ventilated Dry Type Transformer utilizes advanced Vacuum Pressure Impregnation (VPI) technology to deliver superior reliability and efficiency. Designed with DuPont NOMEX® insulation paper, the system ensures exceptional thermal stability, mechanical integrity, and resistance to environmental factors. It serves as a safe, fire-resistant, and environmentally friendly alternative to traditional oil-filled transformers for demanding indoor applications.

Front view of open ventilated dry type transformer unit

Technical Specifications

Performance Metrics

Rated Power	HV Voltage	LV Voltage	Connection
100-3150 kVA	6-11 kV	0.4	Dyn11 / Yyn0

Insulation Grade: F-grade DMD lamination

Internal view of VPI transformer coil assembly — Advanced winding technology featuring NOMEX insulation for superior mechanical and electrical performance.

Key Advantages

Core Advantages: Fire-proof constructionLow partial dischargeLow noise levelsHigh overload capabilityEnvironmentally friendlyTemperature resistant

Application Areas

Suitable Environments

Airports
Subways
Power plants
Nuclear power plants
Hospitals
High-rise buildings
Shopping centers

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