What kind of credentials do you have?

We hold several prestigious credentials including a Quality Management System Certificate and a High-tech Enterprise Certificate, among others.

Can I come to visit your factory?

Absolutely! We warmly welcome you to visit our factory and witness our operations firsthand.

300A Oil-Immersed Composite Vacuum on-Load Tap Changer for Transformer

Name: 300A Oil-Immersed Composite Vacuum on-Load Tap Changer for Transformer
Brand: Wukai Electric (Jiangsu) Co., Ltd.
SKU: 2133736695

Jiangsu, ChinaWukai Electric (Jiangsu) Co., Ltd.

US$400.00-4,000.00

1 Piece

Sample price:US$3980.00/piece.Request sample

Product profile

Customization

Available

Application

Power Transformer

Phase

Single-Phase or Three-Phase

Model NO.

FSZ300/10-9

Winding Type

Angle, Triangle or External Connection

Certification

ISO9001

Usage

Single-phase Transformer, Power Transformer

Brand

Wukai

Insulation Cylinder Material

Epoxy Resin

Contactors

Silver-Plated

Transport Package

Composite Wood Crating

Specification

Diameter 310cm, Height 1245cm

Origin

China

Key features

Compact and Lightweight Design: Saves installation space with a unique design combining tap selector and diverter switch.

Advanced Vacuum Arc Extinguishing: Utilizes advanced vacuum technology and buried composite resistance for superior performance.

Long Mechanical and Electrical Life: Mechanical life no less than 50 million cycles; electrical life no less than 10 million cycles.

Flexible Regulation Options: Offers neutral point and end regulation to meet diverse application scenarios.

Comprehensive Customization: Supports full customization, minor customization, and customization from samples or designs.

High Current Capacity Options: Available in rated through-currents ranging from 100A to 800A.

Robust Sealing Performance: Withstands working pressure of 3x10^4 Pa and test pressure of 6x10^4 Pa.

ISO9001 Certified Quality: Manufactured under strict quality control with 100% finished product inspection.

Company profile

High Repeat Buyers ChoiceQuality AssuranceManagement CertificationStandardized Supplier Management

Wukai Electric (Jiangsu) Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 2 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤0.04h

AI-Powered supplier vetting

SummaryThe supplier is an industrial transformer and on-load tap-changer manufacturer with production, sales, and service capabilities. It demonstrates broad customization, ODM availability, recent new-product activity, documented inspection, quality assurance, traceability, complaint handling, and corrective-action procedures. Production infrastructure includes 18 lines and multiple specialized assembly, drying, leak-detection, and testing facilities, with stated lead times within 15 workdays in both peak and off-peak periods. However, the evidence also shows limited international reach: exports represent 1%–10% of sales, primary markets are domestic, and there are no overseas agents, branches, warehouses, or showrooms. No certification information, customer cases, or explicit after-sales service performance is provided. Manufacturing controls have weaknesses, including no valid manufacturing-capacity contract with related subcontractors, no outsourcing SOP, and no ongoing batch quantity reconciliation.

Supplier typeThe supplier is described as a manufacturer covering power transformers, electric furnace transformers, special transformers, and related products. It is also identified as a designated professional manufacturer of on-load tap changers and a key enterprise in China’s transformer industry.

After-Sales capabilityThe company description states that it has sales and service capabilities, while the supplier reports documented procedures and records for handling customer complaints and corrective and preventive actions. These controls support service responsiveness, but no specific after-sales scope, response time, service network, or performance data is provided.

R&D capabilityThe supplier reports new products during the past year and provides ODM services, indicating active product-development capability. However, it has no available SDK and does not provide OEM services for popular brands; these facts do not negate general innovation capability but limit evidence of software integration and major-brand OEM experience.

Production capacityProduction capability is supported by 18 manufacturing lines, more than 10 operating production lines, specialized assembly and testing equipment, inventory capability, documented finished-product inspection, and stated lead times within 15 workdays in both peak and off-season periods. Risks include no valid manufacturing-capacity contract with related subcontractors, no outsourcing SOP, and no ongoing batch quantity reconciliation.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports ODM availability and recent new-product activity, providing strong evidence of broad customization support.

Product Q&A

Q:What are your main products?

For over four decades, our company has specialized in developing and producing on-load tap changers. Our extensive product range caters to power transformers, furnace transformers, specialized transformers, and various other industries.

Q:Are you a manufacturer?

Yes. Wukai Electric (Jiangsu) Co., Ltd. proudly is a leading on-load tap changer manufacturer. With a state-of-the-art factory spanning 20,000 square meters and a dedicated workforce of over 100 employees, our production line has delivered nearly 100,000 units currently operational in networks worldwide. Additionally, we offer comprehensive OEM and ODM services to meet diverse customer needs.

Q:How do you control the quality of your products?

We implement a stringent quality control system throughout every stage of the production process. Upon completion, each product undergoes thorough testing by relevant standards. A detailed factory inspection report accompanies all shipping documents, ensuring transparency and reliability.

Q:What's your payment terms?

We are flexible and accept various payment terms such as T/T, L/C, and more.

Q:What are your products packaged for transportation?

Our products are securely packaged in robust composite wood crates to ensure safe transportation.