150 kVA Oil-immersed Power Transformer: Key Technical Parameters & Factory Matching Guide

Selecting the right 150 kVA Oil-Immersed Power Transformer is critical for ensuring stable power distribution, long service life, and safe operation in industrial, commercial, and utility applications. Beyond capacity, buyers must understand key technical parameters and evaluate factory capabilities to avoid mismatches that lead to energy loss or operational risks.

 

This guide explains the key technical parameters of a 150 kVA oil-immersed power transformer and provides a practical factory matching methodology. As a professional manufacturer, GNEE supplies oil-immersed transformers engineered for real-world operating conditions.

 

Who We Are – GNEE Oil-Immersed Transformer Manufacturer

GNEE is a professional manufacturer of oil-immersed and dry-type power transformers, serving global industrial plants, substations, renewable energy projects, and infrastructure developments. Our 150 kVA oil-immersed power transformers are manufactured with high-quality magnetic cores, premium insulation oil, and strict quality inspection procedures, fully compliant with IEC, ANSI, and GB standards.

 

"GNEE factory production of oil-immersed power transformers"

 

Rated Capacity and Voltage Parameters of a 150 kVA Oil-Immersed Power Transformer

Understanding electrical ratings is the foundation of proper selection.

 

Core Electrical Parameters

• Rated capacity: 150 kVA
• Rated primary voltage: 6kV / 10kV / 11kV / 20kV
• Rated secondary voltage: 0.4kV or customized
• Frequency: 50Hz / 60Hz

Correct voltage matching ensures compatibility with the grid and connected equipment.

 

Cooling Method and Insulation System Design

Cooling and insulation directly affect transformer reliability and lifespan.

 

Key Design Features

• Cooling method: ONAN (Oil Natural Air Natural)
• Insulation oil: Mineral oil or environmentally friendly oil
• Insulation class: A / upgraded insulation systems
• Temperature rise: Designed per international standards

 

Loss Parameters and Energy Efficiency Considerations

Loss performance is a key indicator of transformer quality.

 

Loss Categories

• No-load loss: Determined by core material quality
• Load loss: Influenced by winding conductor and structure
• Total loss: Impacts operating cost and efficiency

Low-loss designs reduce energy consumption and operating expenses over the transformer's lifecycle.

 

Mechanical Structure and Protection Level

Mechanical design affects safety, durability, and ease of installation.

 

Structural Features

• Sealed or conservator-type oil tank
• Anti-corrosion surface treatment
• IP-rated bushings and terminals
• Optional pressure relief and oil level indicators

Robust construction ensures safe operation even in harsh environments.

 

Factory Matching Guide for a 150 kVA Oil-Immersed Power Transformer

Choosing the right factory is as important as choosing the transformer itself.

 

Factory Evaluation Criteria

• Manufacturing experience and production capacity
• Compliance with IEC / ANSI / GB standards
• Quality control and routine testing procedures
• Customization capability and technical support

"Electrical testing of oil-immersed transformers before shipment"

 

Typical Applications of a 150 kVA Oil-Immersed Power Transformer

Common application scenarios include:

• Industrial production lines
• Commercial buildings
• Rural and urban power distribution
• Infrastructure and utility substations

The 150 kVA oil-immersed power transformer is ideal for medium-load distribution systems requiring high reliability.

 

Technical Parameters of a 150 kVA Oil-Immersed Power Transformer

Parameter	Specification
Rated Capacity	150 kVA
Transformer Type	Oil-Immersed Power Transformer
Phase	Three-phase
Cooling Method	ONAN
Rated Primary Voltage	6 / 10 / 11 / 20 kV
Rated Secondary Voltage	0.4 kV
Frequency	50Hz / 60Hz
Insulation Oil	Mineral Oil / Eco Oil
Installation	Outdoor / Indoor
Standards	IEC / ANSI / GB

 

Conclusion: Selecting the Right 150 kVA Oil-Immersed Power Transformer

Understanding the key technical parameters of a 150 kVA oil-immersed power transformer and matching them with a qualified factory is essential for achieving safe, efficient, and long-term operation. Proper selection reduces energy loss, improves reliability, and protects your power system investment.

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As an experienced manufacturer, GNEE provides high-quality 150 kVA oil-immersed power transformers with full technical support and customization options.
👉 Contact GNEE today to get detailed specifications, factory matching guidance, and a competitive quotation for your project.