What after-sales service is provided?

We provide online assistance for installation and commissioning, after-sales guidance, and solutions within one business day for any operational issues.

What certifications do your products have?

Our products are accredited with ISO9001, CE, CCC, UL, CSA, and hold Type Test Reports, conforming to IEC, IEEE, ANSI, and GOST standards.

What are the main applications for this transformer?

It is ideal for power stations, coal mines, photovoltaic projects, industrial factories, hospitals, airports, tunnels, chemical plants, and large infrastructure projects.

Premium 33/11kv Oil-Filled Transformer for Optimal Power Management

Name: Premium 33/11kv Oil-Filled Transformer for Optimal Power Management
Brand: TSTY ELECTRIC CO., LTD.
SKU: 2131946655

Henan, ChinaTSTY ELECTRIC CO., LTD.

US$2,558.00

1-2 Sets

US$2,458.00

3+ Sets

Sample price:US$2458.00/set.Request sample

Product profile

Customization

Available

Application

Power, Lighting

Phase

Three

Core

Core-type Transformer

Cooling Method

Oil-immersed Type Transformer

Winding Type

Two-winding Transformer

Certification

ISO9001-2000, ISO9001, CCC, CE

Usage

Power Transformer, Distribution Transformer

Frequency Characteristics

Power Frequency

Shape of Core

Ring

Brand

Tsty

Product Name

Oil Immersed Transformer

Type

Oil-Filled Transformer

Material

Copper / Aluminium

Standard

IEC / GB

Transformer Type

S11 Oil-Immersed Transformer

Vector Group

Dyn11 / Yyn0

Warranty

2 Years

Package

Wooden Case

Frequency

50/60Hz

Coil Material

Aluminum/Copper

Connection Group

Yyn0/Dyn11

Transport Package

Wooden Case or Pallet

Specification

IEC/ANSI/IEEE

Trademark

TSTY

Origin

China

HS Code

8504220000

Key features

Sealed Oil-Immersed Design: Eliminates oil conservator; corrugated tank manages oil volume to prevent degradation and ensure maintenance-free performance.

High Efficiency & Low Loss: Features ultra-low noise, minimal loss, and exceptional energy efficiency for significant power savings.

Fully Customizable Voltage: Rated voltage is fully customizable to meet specific project requirements and regional standards.

Robust Safety Protection: Equipped with Buchholz Relay, pressure relief device, and thermal relay to prevent explosions and damage.

Versatile Customization Options: Customizable frequency (50/60Hz), phases, connection groups (Dyn11/Yyn0), and tapping ranges for tailor-made solutions.

Premium Material Quality: Uses copper or aluminum coils with fully galvanized coating to ensure no rust formation and long durability.

Comprehensive Certifications: Certified with ISO9001, CE, CCC, UL, CSA, and conforms to IEC, IEEE, ANSI, and GOST standards.

Lifetime Technical Support: Provides lifelong service commitment with solutions within one business day and regular technician visits.

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: ≤8.21h 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:Who is the manufacturer?

We are TSTY ELECTRIC CO., LTD., a leading professional manufacturer of oil-immersed transformers, dry-type transformers, and switchgear, established in 2011.

Q:Can the transformer be customized?

Yes, products can be customized to meet specific requirements for voltage, frequency, phases, connection groups, and other parameters across different countries and regions.

Q:What is the warranty period?

We provide at least a two-year guarantee for all our transformers, along with a lifelong service commitment.

Q:How are the transformers shipped?

For overseas delivery, transformers are typically shipped by sea, train, or truck. The main body is transported in bulk, with accessories packed in wooden cases.

Q:Do you accept Factory Acceptance Tests (FAT)?

Yes, we accept FAT and ensure thorough testing of each transformer set before shipment.