The ZGS series combined transformer (commonly known as American-type pad-mounted transformer) is a fully integrated compact distribution substation solution.

It combines multiple electrical components into a sealed oil-filled tank, including:

• High-voltage load switch
• Plug-in fuses
• Backup protection fuses
• Transformer core and windings
• No-load tap changer

The entire system uses transformer oil as insulation and cooling medium, ensuring safe and stable operation.

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Caraterísticas principais

✔ Fully Integrated Compact Design

All key components are installed inside a sealed oil tank, including protection and switching devices.

👉 Reduces external wiring complexity and improves safety

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✔ High Reliability Performance

• Conceção de baixas perdas
• Funcionamento com baixo ruído
• High short-circuit withstand capability

Assegura um funcionamento estável a longo prazo

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✔ Compact Structure

• Pegada pequena
• Design pré-montado de fábrica

Ideal para instalações com espaço limitado

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Funcionamento sem manutenção

• Sealed tank structure
• No frequent maintenance required

👉 Reduces lifecycle operation cost

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✔ Safe & Reliable Protection System

Inclui:

• Load switching protection
• Fuse protection system
• Backup fault protection

👉 Ensures high operational safety

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✔ Easy Installation

• Plug-and-play installation
• Suitable for outdoor distribution systems

👉 Fast deployment in power projects

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🔹 Conceção estrutural

🔸 Sealed Oil Tank Structure

• Fully enclosed metal tank
• Transformer oil insulation system
• Weather-resistant design

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🔸 Integrated High Voltage Section

• Load switch
• Fuse protection system
• Tap changer (optional)

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🔸 Unidade de transformação

• High efficiency oil-immersed transformer
• Optimized thermal design

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🔹 Aplicações

The ZGS pad-mounted transformer is widely used in:

• Residential communities
• Edifícios comerciais
• Hotels and public facilities
• Empresas industriais e mineiras
• Urban and rural distribution networks
• Compact substations

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🔹 Resumo das vantagens

• Fully integrated American-type design
• High reliability and safety performance
• Compact and space-saving structure
• Funcionamento sem manutenção
• Instalação e colocação em funcionamento rápidas
• Suitable for outdoor distribution systems

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❓ FAQ

1️⃣ What is a ZGS pad-mounted transformer?

E é:
👉 A fully integrated compact substation transformer with built-in protection and switching devices inside an oil tank.

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2️⃣ Where is it commonly used?

É amplamente utilizado em:

• Residential areas
• Complexos comerciais
• Industrial power distribution
• Public infrastructure

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3️⃣ What is the advantage of American-type design?

• Estrutura compacta
• Fully sealed system
• Elevada segurança e fiabilidade
• Easy installation

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4️⃣ Necessita de manutenção?

Não, é sim:
👉 Fully sealed and maintenance-free design

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5️⃣ Is it suitable for outdoor use?

Yes, it is designed for:
👉 Outdoor distribution and harsh environmental conditions