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Isolation Potential Power Single Phase Transformer for Railway to Step Down with Eco-Friendly & Waterproof
US$211.00
1 Piece

Product profile

Customization

Available

Application

Power, Railway

Phase

Single

Model NO.

BK-4kVA 420V/48V

Core

Core-type Transformer

Cooling Method

an

Winding Type

Two-winding Transformer

Certification

ISO9001, CE,TUV

Usage

Single-phase Transformer, Power Transformer

Frequency Characteristics

Power Frequency

Shape of Core

EI

Brand

Lushan China

Type

Toroidal Transformer

Capacity

4kVA

Work Efficiency

≥90%

Primary Voltage

420V

Secondary Voltage

48V

Insulation Class

B/F/H

Insulation Resistance

100MΩ(DC 1000V)

Winding Materials

Copper/Aluminum

Optional Accessories

Temperature Controller, Enclosure Case

Executive Standard

GB/T5290-2012

Transport Package

Wooden Pallet/Wooden Case

Trademark

Lushan

Origin

Changsha China

HS Code

850432900

Production Capacity

100000pieces/Year

Key features

High Efficiency & Low Loss: Boosts electromagnetic conversion with top-grade core and winding materials, reducing hysteresis and eddy losses.
Secure Electrical Isolation: Separates control units from the grid, blocking surges and preventing faults from affecting the power system.
Customizable Specifications: Products can be customized according to voltage, frequency, and other special requirements for different regions.
Strict Quality Control: 100% QC inspection implemented during manufacturing, with 8 specific checks from raw materials to final products.
Wide Application Range: Supplies exact voltage for AC contactor coils in electric control cabinets, ensuring stable and precise control.
Certified Manufacturer: ISO9001, CE, and TUV certified with over 50 years of experience and cooperation with Fortune 500 companies.
Flexible Customization Options: Supports full customization, minor customization, and flexible customization based on samples or designs.
Fast Response Time: Quotes are usually provided within 24 hours after receiving an inquiry to ensure quick project progress.

Company profile

Changsha Lushan Electronic Technology Co., Ltd.
Cooperated with Fortune 500Years of Export ExperienceImporters and ExportersPatents Awarded
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 20 years CertifiedNearest Port: Shanghai portAverage Response Time: ≤0.82h

AI-Powered supplier vetting

SummaryThe supplier manufactures power electronic components, photovoltaic equipment and components, and electrical complete sets. It reports ISO 9001:2015 certification, more than 40 years of technical experience in transformers and reactors, 3D design, OEM/ODM, and broad customization capabilities. Evidence also indicates documented product inspection instructions, available inventory, and technical support covering customer requirements, production, and after-sales service. However, the supplier reported no new products in the past year, no SDK, no overseas warehouse or showroom, and no valid manufacturing-capacity contract with related subcontractors. Financial credibility cannot be assessed from the provided information because no financial performance data is available.
Supplier typeThe supplier’s stated business scope covers manufacturing of power electronic components, photovoltaic equipment and components, and electrical complete sets, alongside sales of electrical complete sets. This supports classification as a manufacturer and supplier of industrial electrical and power-related products.
CertificationsThe supplier explicitly holds an ISO 9001:2015 management-system certificate. This is direct evidence of a recognized quality-management certification, although no additional certifications are stated.
After-Sales capabilityThe company states that it provides technical services and pre-sales, in-sales, and after-sales support, while its technology engineers provide technical support for production and after-sales service. Inventory capability is available, but the supplier has no overseas warehouse, so overseas service infrastructure is limited.
R&D capabilityThe supplier reports more than 40 years of technical experience, studies and applies new technologies, materials, and processes, provides 3D design services, and maintains design-input, output, review, verification, and validation documentation. However, it also reports only 3 R&D engineers and no new products launched in the past year, so the evidence demonstrates established technical capability but not recent product-output strength.
Production capacityThe supplier operates in relevant manufacturing fields, has standardized and uniformly followed finished-product inspection instructions, maintains inventory capability, and reports lead times of within 15 working days in the off-season and one month during peak season. Nevertheless, it has no valid manufacturing-capacity contract with related subcontractors, which limits evidence regarding outsourced production continuity.
Customization capabilityThe supplier explicitly offers 3D software design, customization from samples and designs, full, minor, and flexible customization, as well as OEM and ODM services. These statements provide direct evidence of broad product-design and customization capability, although no SDK is available.
Client casesThe supplier reports collaboration with Fortune 500 companies, a repeat-buyer preference of 50%–80%, and 20 years of export experience, with exports representing 31%–40% of total sales. These are direct indicators of established customer and international-market experience, although no specific customer names or project details are provided.

Product Q&A

Q:Are you a manufacturer or trading company?
A:
We are a manufacturer specializing in power transformer, inductor, and reactor production for 50 years.
Q:How can I trust your quality?
A:
We have cooperated with Fortune 500 companies for over 10 years and hold CE, TUV, and ISO9001 certificates.
Q:What are your major products?
A:
Dry-type transformer, oil-immersed transformer, high voltage and low voltage transformer, line reactor, filter reactor, and high-frequency transformer.
Q:What is the warranty period?
A:
We offer at least 12 months warranty time for our products.
Q:What is the lead time for mass production?
A:
7 to 25 working days or depending on order quantity.

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