What is the application voltage?

The type application voltage is 55kV.

What are the available shipping terms?

We support FOB, CIF, CFR, and EXW international commercial terms.

How is the quality controlled?

We have 6 QA/QC inspectors and perform 100% functional inspection on all finished products.

High-Quality ANSI 57-4 Line Post Insulator for Power Systems

Name: High-Quality ANSI 57-4 Line Post Insulator for Power Systems
Brand: Jiangxi Johnson Electric Co., Ltd.
SKU: 2016177725

Jiangxi, ChinaJiangxi Johnson Electric Co., Ltd.

US$14.80

500-999 Pieces

US$12.80

1,000+ Pieces

Product profile

Customization

Available

Application

High-voltage

Material

Porcelain

Model NO.

57-4

Structure

Post Insulator

Usage

High Voltage Power Transmission, Insulation, Electrical Installation

Connection Method

Spherical Type

Certification

CCC, CE, ISO9001

MOQ

500

Transport Package

Wooden Case Packing

Specification

portland cement

Trademark

PAC

Origin

China

HS Code

8546209090

Production Capacity

500000PCS/Year

Key features

High Voltage Application: Designed for 55kV high voltage power transmission and insulation.

Durable Porcelain Material: Constructed from high-quality porcelain for reliable performance.

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

High Mechanical Strength: Cantilever strength of 12.5 kN with routine test verification.

Superior Insulation Performance: Dry arcing distance 368mm, creepage distance 1015mm.

Full Customization Options: Offers full, minor, and flexible customization from samples or designs.

100% Quality Inspection: All finished products undergo 100% functional inspection.

Manufacturer Direct Supply: Produced by Jiangxi Johnson Electric Co., Ltd with three factories.

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: ≤0.24h 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.