ANSI Transformer Bushings

The High Voltage ANSI Bushing uses a wet‑process porcelain insulator manufactured in one piece up to 2800 mm in length. It meets both IEC and ANSI standards, featuring cylindrical, conical or straight inner and outer profiles. The porcelain is glazed in light gray. This structural design supports withstanding internal pressures and cantilever forces, which is vital for any transformer bushing or bushing transformer application where mechanical reliability and dielectric strength are required. The product is classified under standard ANSI ratings. Transformer bushing manufacturers rely on this kind of robust porcelain construction for safe and long‐term service in high‐voltage environments.

This ANSI bushing is rated for 15‑27 kV nominal voltage and up to 50 A continuous current. It has an insulating body designed to endure high mechanical forces. The electrical data table shows a variety of voltage‑current combinations, for example 5 kV at 170 A or 18 kV with eyebolt connectors, depending on configuration. These ratings allow this power transformer bushing to serve in different installations. The high breakdown voltage (BIL) values also reflect capacity to resist voltage surges—an important factor for specifying transformer bushing suppliers when evaluating safety margins in insulation performance.

The device uses wet process porcelain as the insulator material. Light grey glaze is applied to provide surface finish and environmental resistance. The product adheres to ANSI standard dimensions and performance, and fabricates insulators in forms with cylindrical, conical or straight profiles. Production of one‑piece units up to 2800 mm in length ensures fewer joints, which improves durability and reduces failure points. For consumers seeking HV bushing of transformer or transformer bushing options, NJREC provides variants designed to handle various connector types (eyebolts, spade, etc.) as shown in electrical data, to match installation requirements.

Because this ANSI bushing is made in one piece porcelain, it offers enhanced mechanical strength under radial or cantilever loads. The wet‑process porcelain material and standardized profile (cylindrical, conical, straight) help maintain insulation integrity. When you deal with transformer bushing manufacturers, this degree of structural soundness and sealed glaze finish help ensure reliable performance over time in applications needing a high power transformer bushing with low maintenance.

NJREC provides these bushings with different connector styles—eyebolts, spade connectors, threaded sidewall mountings, etc.—as listed in the electrical data. There are many voltage‑current combinations (from low‑kV small current to higher kV and larger currents), giving flexibility across installations. For contractors or utilities specifying bushing transformer accessories, this variety from one supplier aids matching of specification without compromising compatibility.

The product conforms to ANSI and IEC or customer standards, using high quality porcelain material, glaze finish, and manufacturing processes. The light gray glaze color is standard and consistent. NJREC’s design ensures few parts, simple structure, which reduces complexity and helps reliability. For those sourcing from transformer bushing suppliers, strict adherence to recognized standards and materials is a key advantage when integrating with existing transformer equipment or meeting regulatory requirements.

 
Nanjing Rainbow Electric Co., Ltd. (NJREC) has 20 years of experience in producing electrical components, including transformer bushing products and high-voltage insulators. The company specializes in supplying one-stop solutions for oil-immersed and dry-type transformer accessories, pad-mounted transformer parts, and wall-mounted applications. Its product line also includes glass insulators, porcelain insulators, tap changers, and isolating switches for power substations and transmission lines.

 
NJREC’s production process strictly follows ANSI, IEC, or customer-specific standards, ensuring high-quality materials and dimensional precision. The factory is capable of manufacturing porcelain components up to 2800 mm in one piece, which enhances mechanical strength and electrical reliability. As one of the transformer bushing manufacturers focused on long-term service performance, NJREC offers reliable support in both standard and custom configurations for high-voltage applications.

 
With a reputation for stable quality, competitive pricing, and timely delivery, NJREC serves global markets requiring trusted transformer bushing suppliers with deep technical expertise and comprehensive product offerings.

The available ANSI bushings support nominal voltages ranging from 15 kV to 27 kV, depending on the specific model.

NJREC uses high-strength wet-process porcelain with a light gray glaze for enhanced insulation and mechanical stability.

Yes, the bushings are produced in compliance with ANSI, IEC, and customer-specific technical requirements.

 
What types of connectors are available on the bushings?

Available connector options include eyebolt, spade, threaded stud, and sidewall types, suitable for different voltage and current combinations.

Yes, NJREC offers ANSI-compliant products suitable for replacement and retrofit in existing bushing transformer assemblies.