Do you offer guarantee for the products?

Yes. We offer at least one year guarantee for all of our transformers.

15 years experience, Advanced production equipments, Stable quality, Fast delivery, Professional & good & Prompt service. Also some free parts can be provided for you.

Efficient Step-up and Step-Down Transformer for 400 kVA Applications

Name: Efficient Step-up and Step-Down Transformer for 400 kVA Applications
Brand: TSTY ELECTRIC CO., LTD.
SKU: 2198599025

Henan, ChinaTSTY ELECTRIC CO., LTD.

US$2,000.00-7,000.00

1 Set

Product profile

Customization

Available

Application

Power, Power Distribution System

Phase

Three

Model NO.

Oil transformer

Core

Core-type Transformer

Cooling Method

Oil-immersed Type Transformer

Certification

ISO9001-2000, ISO9001, CCC

Usage

Single-phase Transformer, Combined Transformer, Power Transformer, Distribution Transformer

Frequency Characteristics

Power Frequency

Shape of Core

Ring

Brand

Tsty

Warranty

2 Years

Place of Origin

Henan, China

Use

Power

Standard

IEC / GB

Material

Copper / Aluminium

Model Number

S11

Brand Name

Tsty

Type

Oil-Filled Transformer

Coil Number

Autotransformer

Coil Structure

Toroidal

Vector Group

Dyn11 / Yyn0

Product Name

Power Transformer

Frequency

50/60Hz

Package

Wooden Case

Transformer Type

S11 Oil-Immersed Transformer

Transport Package

Wooden

Specification

According to actual cargo specifications

Trademark

TSTY

Origin

China

Key features

30% Lower No-Load Loss: Achieves 30% reduction in no-load loss compared to S7 model for superior energy efficiency.

Oil-Sealed Flexible Tank: Fully oil-filled and sealed design eliminates oil conservator need, managing volume changes flexibly.

High Lightning Resistance: Formidable resistance against lightning strikes and short circuits ensures reliable operation.

Compact Space-Saving Design: Optimized compact structure saves valuable installation space while maintaining performance.

15 Years Experience: Over 15 years of unparalleled experience in transformer manufacturing and production.

Comprehensive Warranty: Offers at least one year guarantee for all transformers to ensure peace of mind.

Free Parts Included: Complimentary parts provided as a token of appreciation to enhance customer experience.

Customization Available: Products can be customized according to specific voltage, frequency, and regional requirements.

Company profile

Importers and Exporters100% Finished Products InspectionProduct CertificationProduction Process Visualization

TSTY ELECTRIC CO., LTD.

Henan, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2020-06-01 CertifiedNearest Port: Qingdao Port,Average Response Time: ≤8.92h CertifiedTerms of Payment: LC, T/T, PayPal, etc.

AI-Powered supplier vetting

SummaryThe supplier is a limited company with 513 employees and no stated parent group. It offers oil-immersed and dry-type transformers, transformer substations, and high- and low-voltage switchgear. Production evidence includes four production lines, stated annual output for several product categories, broad export coverage, and off-peak lead time within 15 workdays. The supplier demonstrates R&D, ODM, OEM, private-mold, 3D design, and sample/design customization capabilities, but has no available SDK. Certifications include ISO 9001:2015, ISO 45001:2018, ISO 14001, CE, and UL. Overseas agents or branches, inventory capability, and participation in ELEKTRO 2026 are reported, while overseas warehouses and showrooms are unavailable. Financial information is identified for 2023–2025, but no financial performance values are provided. Customer references are limited to stated OEM service for popular brands.

Supplier typeThe supplier is a limited company, is not stated to belong to a larger company group, and operates in power equipment and electrical-component sales, including transformers, switchgear-related equipment, and associated electrical products. This identifies a specialized electrical equipment supplier rather than a general trading entity, although the stated number of cooperative suppliers is zero and the business scope excerpt is incomplete.

CertificationsThe supplier reports ISO 9001:2015, ISO 45001:2018, and ISO 14001 certifications, along with CE and UL product-certification capability. These explicitly support quality, occupational-safety, environmental-management, and product-compliance capabilities.

After-Sales capabilityThe supplier reports 100 qualified service-capability suppliers, documented procedures and records for supplier assessment, and a corrective and preventive action mechanism. It also has inventory capability and overseas agents or branches serving Tanzania, Zambia, Ghana, and other countries, but has no overseas warehouse or showroom; the available evidence supports service infrastructure but not complete global after-sales coverage.

R&D capabilityThe supplier reports private-mold R&D, professional technical-supplier capability, 3D software design, new products within the past year, ODM services, and OEM services for popular brands. However, it explicitly has no available SDK, so innovation capability is demonstrated in product and design development but not across all technical interfaces.

Production capacityThe supplier operates four production lines and reports output of 6,000 substations, 10,000 oil transformers, 5,400 switchgear units, and 11,000 dry-type transformers, with off-peak lead time within 15 workdays. It has in-stock capability and broad export markets, but no valid contract with an associated subcontractor, which is a stated manufacturing-governance gap.

Customization capabilityThe supplier explicitly provides customization from samples and designs, private-mold development, 3D software design services, ODM, and OEM services. These capabilities directly support customized product development and manufacturing.

Product Q&A

Q:What's your major products?

Oil immersed transformer, dry type transformer, Transformer Substation, High and Low Voltage Switchgear.

Q:Can your product be customized?

Considering differences in voltage, frequency, and other specialties of transformer products in different countries and regions, our product can be customized according to your requirements.

Q:When can I get the price?

Usually we quote within 24 hours after we get your inquiry.

Q:What about lead or shipping time?

The lead time depends on the quantity you ordered, generally within 15 days upon receipt of advance payment.

Q:What is the price of shipping?

Depending upon the port of delivery, prices vary.