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Energy-Saving S11 Series 20kv Oil-Immersed Transformer

Name: Energy-Saving S11 Series 20kv Oil-Immersed Transformer
Brand: Wenzhou Naisite Electric Co., Ltd.
SKU: 2156919775

Zhejiang, ChinaWenzhou Naisite Electric Co., Ltd.

US$225.00-9,999.00

1 Set

Product profile

Customization

Available

Application

Power

Phase

Three

Model NO.

Oil Immersed Transformer

Core

Depends on The Model

Cooling Method

Oil-immersed Type Transformer

Winding Type

Multi-winding Transformer

Certification

ISO9001-2000, ISO9001, CCC

Usage

Power Transformer, Distribution Transformer

Frequency Characteristics

High Frequency

Shape of Core

Ring

Brand

Toonice

Coil Structure

Layer Coil

Rated Primary Voltage

Rated Secondary Voltage

0.4

Rated Capacity

50 kVA

Winding Material

Copper/Aluminum

Input Voltage

10kv,11kv,15kv,22kv,30kv

Output Voltage

380V,400V

Transport Package

Wooden Case

Specification

Depends On The Model

Trademark

TOONICE

Origin

China

HS Code

8504231100

Production Capacity

300 Pieces/Week

Key features

High Efficiency & Low Loss: S11 series reduces no-load loss by 30% and no-load current by 70-85% compared to S9 series.

Extended Service Life: Service life more than doubled with average temperature rise reduced by 10K.

Low Noise Operation: Noise reduced by 2-4 decibels compared to traditional transformers.

Maintenance Free Design: Fully sealed corrugated tank eliminates oil tank, preventing oil deterioration and dampness.

Superior Short Circuit Resistance: New insulation structure and longitudinal oil path spiral coil enhance anti-short circuit capability.

High Quality Materials: Uses oxygen-free copper wire, high-quality cold-rolled silicon steel, and deep filtered transformer oil.

Wide Operating Range: Can run for long periods even under 20% overload conditions.

Comprehensive Certifications: Certified with ISO9001, ISO14001, OHSAS18001, and meets GB/IEC standards.

Company profile

Management CertificationR&D CapabilitiesQuality AssuranceFlexible Customization

Wenzhou Naisite Electric Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedExport Year: 1 Year CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤4.20h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryWenzhou Naisite Electric Co., Ltd. is a technology-oriented manufacturer of transmission and distribution equipment, including transformers, switchgear, substations, and related electrical products. The supplier reports ISO 9001 and ISO 14001 certification, with additional company information citing OHSAS18001 and a CNAS laboratory certification report. It offers extensive customization and ODM services and has OEM experience with well-known brands. However, the available information indicates no new products were developed in the past year, no SDK is available, and after-sales/service management lacks written procedures and records for assessment, corrective actions, and complaint handling. Export sales account for 41%–50% of total sales, but the supplier began exporting only one year ago and reports no overseas warehouse, showroom, agent, branch, or offline trade-show participation. Financial credibility and customer cases cannot be conclusively assessed from the provided evidence.

Supplier typeThe supplier is identified as Wenzhou Naisite Electric Co., Ltd., a technology-oriented transmission and distribution equipment manufacturer. Its stated scope and product list cover transformers, substations, switchgear, vacuum circuit breakers, disconnect switches, distribution boxes, and photovoltaic or energy-storage equipment, indicating a specialized electrical equipment manufacturer rather than a general trading company.

CertificationsThe supplier reports ISO 9001 and ISO 14001 certification, while its company description additionally cites OHSAS18001 occupational health and safety certification and a CNAS national accreditation laboratory certification report. These certifications provide explicit evidence of formal quality and environmental management systems, although the provided information does not include certificate numbers, validity dates, or scope details.

After-Sales capabilityThe supplier reports no written procedures or records for service-capability assessment, corrective and preventive actions, or effective customer-complaint handling. It also has no overseas warehouse, showroom, agent, branch, or offline trade-show participation, although it states average peak- and off-season lead times are within 15 workdays and accepts multiple service quotation and payment terms. The documented weaknesses in service-management controls are explicit.

Production capacityThe supplier presents itself as a manufacturing enterprise with a broad transmission and distribution equipment portfolio, 11–20 quality-control staff, and finished-product checks performed by packing staff. It reports export sales of 41%–50% and lead times within 15 workdays in both peak and off seasons. These facts support production and delivery capability, although the slices do not provide factory size, production capacity, equipment details, or production-volume data.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides ODM services, indicating capability to develop or adapt products according to customer requirements.

Product Q&A

Q:Are you a trading company or manufacturer?

We are a professional factory with 10 years experience in the field of High and Low voltage switchgears, Substation, transformers, cable distribution box and various electrical equipment, such as vacuum circuit breaker , load break switch etc. Our factory is the excellent supplier of State Grid Corporation of China .

Q:Do you accept customized service?

We offer OEM/ODM service , can print your logo on product . our professional technical and quotation team can provice a satisfied project according to your drawing and parameters .

Q:What is your MOQ?

Our MOQ is 1 piece .

Q:How long is your delivery lead time?

It depends on your product requirement and quantity . Generally , 5~10 working days is available .

Q:How do you solve quality problems?

Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse. we will make a satisfied soluton within 2 days.