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ANSI standard bushings are electrical insulating components manufactured in accordance with American National Standards Institute (ANSI) specifications, primarily used for lead insulation and conductive lead-out in oil-immersed transformers and power apparatus.
In terms of product history, the ANSI bushing standard system can be traced back to the ANSI/IEEE C57.19 series, which systematically specifies general requirements and test procedures for bushings used in liquid-immersed transformers and reactors. After nearly 50 years of practical application, ANSI/IEEE bushing interchangeability standards have helped U.S. utilities reduce spare bushing inventories, shorten replacement lead times, and lower the overall cost of supporting reliable operation of liquid-filled transformers and reactors.
In terms of raw materials, ANSI standard bushings primarily utilize wet-process porcelain insulators and epoxy resin insulation materials. Glazed porcelain offers excellent weather resistance and anti-pollution flashover performance for harsh outdoor environments, while epoxy resin bushings are commonly used for low-voltage and dry-type transformer applications, featuring high dimensional precision and good mechanical strength.
Technical Specifications
ANSI standard bushings are designed and manufactured in accordance with the ANSI/IEEE C57.19 series. Typical parameters are as follows:
| Parameter | Value / Range |
|---|---|
| Standard | ANSI/IEEE C57.19 series |
| Rated Voltage | 15kV – 34.5kV |
| Rated Current | 200A – 3000A (typical) |
| Frequency | 50Hz / 60Hz |
| Creepage Distance | 279mm – 1114mm (varies by voltage class) |
| Arcing Distance | 156mm – 505mm (varies by voltage class) |
| Insulation Material | Wet-process porcelain / Epoxy resin |
| Application | Oil-immersed transformers, reactors, power apparatus |
Q: What is an ANSI bushing?
A: An ANSI bushing is an electrical insulating component manufactured in accordance with American National Standards Institute (ANSI) specifications. It is primarily used for lead insulation and conductive lead-out in oil-immersed transformers and power apparatus.
Q: What standards do your ANSI bushings comply with?
A: Our ANSI bushings are designed and manufactured in accordance with the ANSI/IEEE C57.19 series, which specifies general requirements, dimensional interchangeability, and test procedures for bushings used in liquid-immersed transformers and reactors.
Q: What is the rated voltage and current range?
A: Typical rated voltages range from 15kV – 34.5kV, and rated currents typically range from 200A to 3000A, depending on the specific voltage class and application. Please contact us for exact parameters of your required model.
Q: What materials are used?
A: ANSI standard bushings primarily use wet-process porcelain insulators and epoxy resin insulation materials. Glazed porcelain offers excellent weather resistance and anti-pollution flashover performance for outdoor environments, while epoxy resin bushings are commonly used for low-voltage and dry-type transformer applications.
Q: Do you support customization and stock supply?
A: Yes. We support customized solutions based on your specific requirements. We also keep stock for some standard models to enable fast delivery. Please send us your inquiry for details.
Q: What certifications do you have?
A: Our products are certified with ISO9001, ISO14001, and other relevant certifications. Test reports and compliance documents can be provided upon request.
In terms of customer groups and applications, the core users of ANSI standard bushings are transformer manufacturers, power equipment integrators, and power system O&M units. Typical applications include single-phase oil-immersed distribution transformers, industrial power transformers, municipal grid equipment, mining power supply transformers, and backup power systems for large commercial buildings.
In the industry, production of ANSI standard bushings is concentrated among specialized transformer accessory manufacturers, where the core competition lies in standards compliance, dimensional interchangeability, and long-term operational reliability.
Company Profile
Hebei Anmei Electrical Equipment Co., Ltd. is a high-tech enterprise with over 30 years of deep engagement in transformer bushings. We specialize in R&D, production, and sales of bushings for oil-immersed transformers of 40.5kV and below, boasting diverse products compliant with global standards including ANSI, IEEE, IEC, and other international specifications.
Our products are exported to dozens of countries and are widely used in power transmission & transformation, new energy scenarios, and industrial power systems, meeting the needs of global energy transition.
Our Advantages
1.Profound Industry Experience
Over 30 years of focus on bushings, solid technical strength, and deep expertise in medium and low-voltage power transmission & transformation and new energy supporting facilities.
2.Diversified Product System
A full range of bushing types compliant with international standards (ANSI, IEEE, IEC, US, EU, etc.); special models for wind and solar transformers adapted to harsh new energy working conditions.
3.Efficient Production Capacity
Supported by automated production lines, daily output of over 2,000 sets, capable of quickly undertaking large orders and customized demands.
4.Improved Quality Control System
Certified by multiple international systems, closed-loop management of the whole process, and product quality recognized by the global market.
https://www.anmeibushing.com/products
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