NBR Standard Transformer Bushing

NBR Standard Transformer Bushing

The South American power market, particularly Brazil, presents unique technical challenges that differ significantly from North American (ANSI) and European (IEC/EN) grids. The Brazilian power grid is primarily governed by the ABNT NBR standards, which dictate specific dimensional tolerances, installation interfaces, and distinct voltage classes (such as 13.8kV, 24.2kV, and 36.2kV). Furthermore, Brazil's vast tropical and subtropical climates subject power equipment to extreme humidity, heavy rainfall, and severe lightning activity. Therefore, a Brazilian standard transformer bushing must not only meet strict dimensional interchangeability but also feature optimized creepage distances and superior hydrophobicity to resist tropical pollution and UV degradation. Additionally, foreign manufacturers must navigate the stringent INMETRO certification process to legally supply to Brazilian utilities, making local compliance and technical adaptation critical for successful market entry.
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Description

Hebei Anmei Electrical Equipment Co., Ltd. is one of the most reliable manufacturers and suppliers of nbr standard transformer bushing in China, also supports customized service. If you're going to buy high quality nbr standard transformer bushing made in China, welcome to get quotation from our factory.

 

 

 

 

Low-Voltage Epoxy Resin Bushing

Reliable Dry-Type Insulation for Distribution Transformers

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Engineered to master the extreme conditions of the South American power grid, this Brazilian Standard Transformer Bushing strictly adheres to ABNT NBR specifications. Unlike standard models, it is purpose-built for tropical climates, featuring an extended creepage distance and a self-cleaning porcelain glaze to resist heavy rainfall, high humidity, and severe pollution flashover. The inorganic porcelain body delivers absolute UV resistance and thermal stability, preventing aging and tracking under intense sunlight. Every ABNT NBR porcelain bushing undergoes rigorous electrical testing to ensure flawless dielectric performance, guaranteeing safe and uninterrupted operation for oil-immersed distribution transformers across Brazil.

As a reliable supply chain partner for the Brazilian transformer industry, this Brazilian Standard Transformer Bushing offers perfect drop-in compatibility. Manufactured with precise dimensional tolerances matching ABNT NBR standards (such as 13.8kV, 24.2kV, and 36.2kV classes), it seamlessly integrates into existing distribution transformers without any on-site modification. By sourcing directly from our factory, Brazilian manufacturers and utilities can significantly reduce procurement costs and lead times. We provide complete test reports and support OEM customization, ensuring your equipment easily meets local utility requirements and secures a competitive edge in the South American market.

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Technical Drawings

Complete NBR standard drawings for Brazilian transformer bushings, provided in PDF & editable CAD. Accurate flange and terminal dimensions for easy integration into your transformer design and prevent installation errors.

Custom Production

Custom NBR bushings available per project needs. Adjust shed profiles, flange interfaces to fit tropical high-humidity conditions. All designs comply with ABNT NBR standards for reliable electrical performance.

 

Precise Parameters

The table covers key specs: tank opening, arcing distance, creepage distance and weight. Custom specifications supported based on your drawings.

Selection Support

Our technical team offers professional model selection service. We will recommend the proper bushing by checking your transformer voltage class, rated current and installation conditions, and confirm mounting dimensions and connection forms to guarantee perfect matching with your transformer.

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Company Introduction

 

 

 

 

why choose us
 

About Hebei Anmei

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Hebei Anmei Electric Equipment Co., Ltd

 

Founded in 2014, Hebei Anmei Electric Equipment Co., Ltd. is a professional factory-direct manufacturer located in Hejian Economic Development Zone, Hebei Province. With over 30 years of industry experience, a 40,000 ㎡ production base and a professional team including senior engineers and dedicated R&D personnel, we achieve precise control over product quality, cost and delivery progress.

 

We mainly produce high and low voltage transformer bushings rated up to 40.5 kV, available in porcelain, cast-resin and silicone-rubber insulation, compliant with mainstream international standards such as DIN, ANSI and EN. We also provide complete supporting accessories including oil level gauges, bushing covers and dehydrating breathers.

 

Adopting full-process quality management and 100% internal testing, our company has obtained ISO 9001 certification and National High-tech Enterprise qualification. Recognized as an excellent supplier of TBEA, our products are widely supplied to well-known brands including Siemens and ABB, and exported to Asia, the Middle East, Europe and America. We support sample customization, OEM and ODM services, and provide efficient 24-hour online reply for all customer inquiries.

 

 

 

 

 
 
Our Advantages

 

01.

Strict Quality Control

We implement full-process quality inspection from raw material incoming check to finished product delivery, following ISO management systems, to guarantee stable performance of transformer bushings.

02.

Rich Standard & Custom Experience

We support multiple international standards including NBR, IEC, ANSI and DIN. Customized bushings can be developed according to your drawings and site conditions.

03.

Strong Adaptability for Harsh Scenarios

Our porcelain and composite bushings feature excellent pollution resistance, wet flashover resistance, suitable for coastal, high-altitude and tropical humid working environments.

04.

Timely After-sales & Technical Support

Professional engineers provide one-stop technical consultation, drawing confirmation and after-sales guidance, to quickly solve your on-site installation and operation problems.

 

 

our Factory
 

From raw materials to finished products, Anmei's factory safeguards the quality of every bushing through a complete production chain.

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Advanced Manufacturing Capabilities

Our modern manufacturing facility integrates advanced automated production lines with precision engineering. Equipped with state-of-the-art CNC machining centers, automated vacuum casting systems, and high-temperature kilns, the factory ensures exceptional consistency across every batch. This highly controlled manufacturing environment allows us to maintain massive production capacity and stable lead times, fully supporting both standard orders and complex bulk projects for global transformer manufacturers.

Company Factory

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Strict Quality Assurance

The plant implements full-process quality control with final inspection - every stage from incoming materials to finished goods is strictly checked to ensure consistent batch quality; well-organized production planning and progress management ensure orders are delivered on time, giving customers confidence from ordering to receiving.

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Quality, From Materials to Delivery
From raw materials to finished bushings, every step is under our strict control - built for long-term reliability.

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Material Storage
Quality porcelain materials, epoxy resin and metals are stored separately with batch-by-batch acceptance, ensuring product quality from the source.
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Production Workshop
The workshop is equipped with key process facilities for forming, drying and firing, with precisely controlled parameters to ensure stable quality of porcelain and resin bodies.
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CNC Machining
CNC machines perform precision machining of metal parts such as aluminum flanges and conductive rods, ensuring accurate dimensions and high consistency.
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Assembly & Inspection
Experienced workers complete sealed assembly, and every finished bushing is inspected to ensure qualified and reliable delivery.

 

 

Our Service Processes

Our free service hotline:0317-3628666

Pre-sales Consultancy

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Confirmation of order

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Production

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Multi-Channel Shipping

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Confirmation of receipt

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After-sale Services

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Customers & Trust

Backed by consistent product performance, we serve mainstream power enterprises including TBEA, ABB, Siemens, Sanbian Sci-Tech, SDEE and Mingyang Electric. We stick to quality-first principles and hope to achieve joint development with you.

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FAQ

Q: Are you a manufacturer, trading company or a third party?

A: We are the direct producing factory behind our bushings - porcelain bodies and metal parts are all made in our own workshops. Years of specialization in this field give customers consistent quality and real cost advantages; samples are available for your verification.

Q: Where is your factory located?

A: Our factory is in Hejian City, Cangzhou, Hebei, China - a renowned base for transformer bushing manufacturing, with convenient transport for domestic and export logistics.

Q: What voltage range do you cover?

A: Our bushings cover voltage ratings up to 40.5kV.

Q: How do you ensure product quality?

A:Every production batch is strictly inspected before shipment, with routine electrical tests performed per the applicable standard, ensuring full compliance with standard requirements.

Q: What information do you need for a quotation?

A: Please provide rated voltage, current rating, flange size or drawings, and the required standard - we will quote accordingly.

Q: Do you provide technical support?

A: Yes - our engineering team assists with product selection, installation guidance and technical consultation throughout the project.

Q: Do you have any certifications?

A: Our products are manufactured and tested in accordance with relevant international standards, and our factory operates under a quality management system. Please contact us for the certificate list.

Q: What is the ordering process?

A: Quotation → order confirmation → production → inspection → packing → shipment; our sales team follows up every step.

Q: What do arcing distance and creepage distance mean?

A: Arcing distance is the shortest distance in air between live parts, while creepage distance is the shortest path along the insulator surface. Both determine the bushing's withstand performance in polluted or humid environments.

Q: What standards do your products comply with?

A: Our products are manufactured and tested according to mainstream international standards, including ANSI (US), EN (Europe), AS (Australia), DIN (Germany) and NBR (Brazil) series.

Q: What about after-sales service?

A: We provide responsive after-sales support; any questions during use can be reported to us and will be handled promptly.

 

 

 

 

 

 

 

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