What certifications do your products have?

Our products are certified with CCC, CE, and ISO9001.

What is the cantilever strength of the insulator?

The cantilever strength is 12.5 kN, with a routine test strength of 5 kN.

What is the application voltage range?

The insulators support application voltages from 25 kV to 66 kV.

Premium ANSI 57-1 Power Line Insulator for Superior Safety

Name: Premium ANSI 57-1 Power Line Insulator for Superior Safety
Brand: Jiangxi Johnson Electric Co., Ltd.
SKU: 2258705735

Jiangxi, ChinaJiangxi Johnson Electric Co., Ltd.

US$4.28

50-199 Pieces

US$3.68

200+ Pieces

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

Application

High-voltage

Material

Porcelain

Model NO.

57-2

Structure

Post Insulator

Type

Other

Usage

High Voltage Power Transmission, Insulation, Driving, Electrical Installation

Connection Method

Other

Size of Bearing Capacity

70KN

Certification

CCC, CE, ISO9001

Color

Brown

Brand

MOQ

Transport Package

Wooden Case

Specification

559mm*241mm

Trademark

Origin

China

HS Code

8546209090

Production Capacity

5000000

Key features

High Mechanical Strength: Cantilever strength of 12.5 kN with routine test strength of 5 kN for reliable performance.

Comprehensive Certifications: Certified with CCC, CE, and ISO9001 standards for quality assurance.

Flexible Customization: Offers full, minor, and flexible customization options including from samples and designs.

Diverse Voltage Applications: Suitable for application voltages ranging from 25 kV to 66 kV.

Multiple ANSI Classes: Available in ANSI Class 57-1 through 57-5 with varying dimensions and creepage distances.

100% Quality Inspection: All finished products undergo 100% functional inspection with traceable raw materials.

Fast Lead Time: Average lead time is one month for both peak and off-peak seasons.

Manufacturer Direct: Produced by Jiangxi Johnson Electric Co., Ltd with three factories and local labs.

Company profile

Exhibition ExperienceExperienced TeamProduction Process VisualizationCustomization from Samples

Jiangxi Johnson Electric Co., Ltd.

Jiangxi, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 8 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤3.46h CertifiedTerms of Payment: T/T, LC, D/P, etc.

AI-Powered supplier vetting

SummaryJiangxi Johnson Electric Company manufactures a broad range of electrical insulators and related fittings, with three production lines and 41–50 quality-control staff. It supports extensive customization, including customization from samples and designs, and follows uniform finished-product inspection instructions. However, the supplier reports no certification of management systems, no written procedures for service assessment, corrective actions, complaints, or quality assurance, and no overseas agents, warehouses, showrooms, or in-stock service. Its R&D evidence is limited: one year of R&D engineer experience is reported, with no new products in the past year, no ODM, 3D software design, SDK, or popular-brand OEM capability. Export sales account for 51%–70%, and the supplier has participated in one named offline trade show. Financial records are referenced for 2022–2024, but the provided slices do not establish financial strength.

Supplier typeThe supplier is an electrical-insulator manufacturer offering glass, porcelain, composite polymer insulators, transformer bushings, and end fittings. Its listed combined facilities include molding, drying, glazing, kiln, and related production equipment, supporting classification as a specialized manufacturing supplier.

CertificationsThe supplier reports no certification of supplier management systems. It also reports no written quality-assurance procedures or records, although finished-product inspection instructions are stated to be available and uniformly followed.

After-Sales capabilityThe supplier has no overseas agents or branches, overseas warehouse, showroom, inventory service, or written procedures and records for complaint handling, service assessment, or corrective and preventive actions. It does accept several quotation and payment terms and reports a one-month average lead time in both peak and off-season, but the documented after-sales infrastructure is deficient.

R&D capabilityInnovation evidence is weak: the supplier reports one year of total R&D-engineer experience, no new products in the past year, no 3D software design service, no ODM service, and no available SDK. It does offer several forms of design customization, but this does not establish strong product innovation capability.

Production capacityThe supplier operates three production lines, has 41–50 quality-control staff, and lists facilities covering molding, drying, glazing, kiln, and related processes. It also states that finished products are inspected under instructions that are uniformly followed; however, it reports no in-stock capacity and no valid manufacturing contract with associated subcontractors.

Customization capabilityThe supplier explicitly accepts customer designs and provides full, minor, flexible, sample-based, and design-based customization. This is direct evidence of broad customization capability, although 3D software design services are not provided.