What is the lead time for production?

The average lead time is 1-3 months for both peak and off-peak seasons.

How is the quality of finished products ensured?

We perform 100% inspection including visual and functional checks by 36 dedicated QA/QC inspectors.

11kv S20 Series Efficiency Class Oil Immersed Distribution Transformer

Name: 11kv S20 Series Efficiency Class Oil Immersed Distribution Transformer
Brand: Guangdong Zhengchao Electric Co., Ltd.
SKU: 2258090565

Guangdong, ChinaGuangdong Zhengchao Electric Co., Ltd.

US$3,500.00-37,500.00

1 Piece

Product profile

Customization

Available

Application

Power, Instrument

Phase

Three

Model NO.

S20-M

Core

Core-type Transformer

Cooling Method

Oil-immersed Type Transformer

Winding Type

Foil Winding

Certification

ISO4001

Usage

Power Transformer

Frequency Characteristics

Power Frequency

Shape of Core

Core

Brand

Zhengchao Electric

Altitude

≤1000m

Maximum Daily Temperature

<40℃

Maximum Monthly Average Temperature

30℃

Maximum Yearly Average Temperature

20℃

Transport Package

Optional

Origin

China

Key features

High Efficiency Class S20: Oil immersed distribution transformer with S20 efficiency class for optimal energy performance.

Wide Capacity Range: Available in capacities from 30 kVA to 1600 kVA to meet diverse power needs.

Comprehensive Certifications: Certified with ISO9001, ISO45001, ISO14001, and SA8000 for quality and safety compliance.

Full Customization Support: Offers full, minor, and flexible customization based on samples or designs.

Strict Quality Inspection: 100% visual and functional inspection of finished products by 36 QA/QC inspectors.

Established Manufacturer: Established in 1991 with 593 employees and 21 production lines for reliable supply.

Diverse Cooling & Winding: Features oil-immersed cooling and foil winding for enhanced durability and safety.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceCooperated with Fortune 500Self-branded

Guangdong Zhengchao Electric Co., Ltd.

Guangdong, China

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: Confidential CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤6.25h

AI-Powered supplier vetting

SummaryThe supplier demonstrates broad industrial and energy-related business coverage, including photovoltaic equipment, batteries, power electronics, industrial control systems, system integration, and software or technical services. It reports multiple management, environmental, occupational safety, and social responsibility certifications, more than 10 production lines, 94 R&D engineers, and established customization and ODM capabilities. Evidence also indicates OEM cooperation with well-known and Fortune 500 companies, a repeat-buyer preference of 50%–80%, and documented supplier-service procedures. However, the supplier reports no available SDK and no AI-based model for big-data decision support. Financial records are identified for 2022–2024, but the provided slices do not establish financial strength or performance.

Supplier typeThe supplier operates across manufacturing, sales, system integration, industrial automation, photovoltaic equipment, batteries, power electronics, software development, and technical services. This indicates a diversified industrial and technology-oriented supplier profile rather than a narrowly focused product vendor.

CertificationsThe supplier reports ISO9001:2015, ISO45001:2018, ISO14001, and SA8000 certifications. These cover quality management, occupational health and safety, environmental management, and social responsibility, providing explicit evidence of a broad certification portfolio.

After-Sales capabilityThe supplier reports written procedures and followed records for service-capability assessment, corrective and preventive actions, and customer complaint handling. However, the slices do not provide service response times, warranty terms, or actual after-sales performance outcomes.

R&D capabilityThe supplier reports new products during the past year, ODM services, and 94 R&D engineers, demonstrating active product-development resources. Nevertheless, it explicitly reports no available SDK, which limits the evidence for software or developer-interface innovation.

Production capacityThe supplier reports more than 10 production lines, including CNC punching and shearing, powder coating, busbar, copper bar, heat-shrink, and wire-harness lines. These facilities indicate broad manufacturing coverage, although the stated order-fulfillment status of 6 is not defined sufficiently to assess delivery performance.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization, with ODM availability also reported. The repeated customization evidence supports strong adaptability to customer-specific requirements.

Client casesThe supplier reports OEM service for well-known brands and cooperation with Fortune 500 companies. It also reports a repeat-buyer preference of 50%–80%, supporting evidence of customer experience and retention, although no customer names, project details, or references are supplied.