Does the transformer support remote monitoring?

Yes, optional RTU with RS485/Modbus is available for monitoring oil temperature, oil level, and pressure, enabling unmanned substation operation.

High-Efficiency Oil Immersed Power Transformers for Global Distribution

Name: High-Efficiency Oil Immersed Power Transformers for Global Distribution
Brand: TSTY ELECTRIC CO., LTD.
SKU: 2284960415

Henan, ChinaTSTY ELECTRIC CO., LTD.

US$3,000.00

1-2 Sets

US$2,658.00

3+ Sets

Sample price:US$3000.00/set.Request sample

Product profile

Customization

Available

Application

Power, Lighting

Phase

Three

Model NO.

Oil type transformer

Core

Core-type Transformer

Cooling Method

Oil-immersed Type Transformer

Winding Type

Two-winding Transformer

Certification

ISO9001-2000, ISO9001, CCC, CE

Usage

Single-phase Transformer, Combined Transformer, 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

High Efficiency Core: Amorphous alloy core reduces no-load loss by 70-80% compared to conventional silicon steel.

Wide Voltage Range: Covers primary voltage up to 220kV and secondary voltage from 0.4kV to 66kV.

Robust Construction: Clamped core and winding withstand short-circuit forces with advanced insulation for long life.

Flexible Cooling Options: Standard ONAN with ONAF or OFAF options available for higher overload capacity.

Global Certifications: Certified to IEC 60076, IEEE C57, CE, UL, GOST, and ISO9001/14001/45001.

Remote Monitoring: Optional RTU with RS485/Modbus enables unmanned substation operation and monitoring.

24/7 Technical Support: Engineers available via email, phone, or online platform with 8-hour response time.

Customization Available: Designs tailored to exact specifications including voltage, capacity, and vector group.

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: ≤8.25h 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 international certifications do TSTY oil immersed transformers hold?

TSTY oil immersed transformers are certified to IEC 60076, IEEE C57, CE, UL (available upon request), GOST, and ISO9001/14001/45001. Our CNAS-accredited testing laboratory performs full routine and type tests to ensure compliance with global standards, facilitating smooth customs clearance and grid acceptance worldwide.

Q:Can you customize transformers according to my drawings or technical specifications?

Yes, we offer full customization. You can specify voltage rating, capacity, vector group (e.g., Dyn11, Yyn0), tap changer (off-circuit or on-load / OLTC), cooling method (ONAN, ONAF, OFAF), winding material (copper or aluminum), core material (amorphous alloy or grain-oriented silicon steel), enclosure protection (IP54, IP68), and any required accessories. We will produce an optimized design based on your drawings or project requirements.

Q:What warranty do you offer, and how does after-sales support work?

We provide a standard 1-year warranty for all oil immersed transformers. Extended warranty options are available upon request. During the warranty period, we cover free replacement of defective components. We also offer 24/7 remote technical support, online commissioning guidance, and a 48-hour emergency response service worldwide. Spare parts can be quickly dispatched through our overseas warehouses and logistics partners.

Q:What are the main applications for TSTY oil immersed transformers?

They are used in power grids and substations for step-up/step-down, renewable energy farms (solar/wind), industrial power supply (steel, cement, mining), and commercial/residential distribution networks.

Q:What is the voltage and capacity range of these transformers?

The voltage range is from 10kV up to 220kV, and capacities range from 15kVA to 31,500kVA, with larger capacities available upon request.