What is the conversion efficiency?

Power transformers exhibit high conversion efficiency, typically exceeding 95%, ensuring minimal energy loss.

What winding materials are available?

We offer copper or aluminum winding materials, with custom tempering per design requirements.

250 Mva 500 Kv Power Transformer for National Grid Projects

Name: 250 Mva 500 Kv Power Transformer for National Grid Projects
Brand: Jiangsu Daelim Electric Co., Ltd.
SKU: 2248229665

Jiangsu, ChinaJiangsu Daelim Electric Co., Ltd.

US$85,000.00-260,000.00

1 unit

Sample price:US$125000.00/unit.Request sample

Product profile

Customization

Available

Application

Power, Electronic, Electric

Phase

Three

Model NO.

Core

Core-type Transformer

Cooling Method

Oil-immersed Type Transformer

Winding Type

Two-winding Transformer

Certification

ISO9001-2000, ISO9001, UL, cUL CE

Usage

Power Transformer, Utilities/New Energy

Frequency Characteristics

50/60Hz

Shape of Core

Stacked Iron Core

Brand

Daelim Belelfic

Product Name

Immersed Power Transformer 25000 kVA Transformer

Rated Primary Voltage

220kv 138kv 132kv 110kv 69kv 66kv 63kv 60kv

Rated Secondary Voltage

35kv 37kv 38.5kv 11kv 10.5kv 6.6kv

Power

20mva-200mva

Frequency

50Hz/60Hz

Standard

IEC ANSI IEEE

Winding Material

Copper\Aluminum

H.V. Tap Range

±2*2.5%

Impedance

6.5, 10.5, 17~18 (%)

Customized

Feature

High Frequncy Distribution Transformer Oil

Connection Symbol

Ynyn0d11 Ynd11

Short Circuit Impendence

12-14

Warrety

24months

Oil Type

Mineral or Vegetable Oil

Transport Package

Wooden Case

Specification

Depending on your product

Trademark

Daelim Belefic

Origin

China

Production Capacity

25/ Quarter

Key features

Comprehensive Certifications: Meets IEEE, ANSI, IEC, UL, cUL, and CE standards with third-party inspections.

Global After-Sales Support: Local installation and maintenance teams available in North America, South America, and other regions.

High Efficiency Design: Conversion efficiency exceeds 95% with low loss, low noise, and low partial discharge characteristics.

Flexible Customization: Accepts OEM/ODM requests with customizable voltage, capacity, and winding materials.

Robust Quality Control: Strict control from design to delivery with regular UL third-party agency inspections.

Wide Capacity Range: Power ratings up to 300 MVA with high voltage ratings up to 345 kV.

24 Months Warranty: Standard 24-month quality guarantee with optional extension available.

Advanced Cooling System: Oil-immersed type with detachable radiators and magnetic oil-level indicators.

Company profile

In-stock CapacityProduct Certification100% Finished Products InspectionOverseas Warehouse

Jiangsu Daelim Electric Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Full Customization, Flexible customization, etc. CertifiedExport Year: 5 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤5.62h

AI-Powered supplier vetting

SummaryThe supplier operates in electrical and electronic equipment-related manufacturing, sales, and technical services, while also being identified as a trade company with a combined company type. It demonstrates multiple certifications, including product compliance certifications and ISO9001:2015, ISO45001:2018, and ISO14001 management-system certifications. Export capability is substantial, with 71%–90% of sales from exports, six export staff with 6–10 years of experience, and 19 experienced export staff in total. The supplier offers minor, full, and flexible customization, ODM services, and OEM services for popular brands. Production evidence includes eight production lines, but there is no continuous quantity reconciliation for each batch or mass production. Quality controls include traceability, standardized inspection instructions, and maintained records; however, complaint handling has procedures but no written records. The supplier has overseas warehouses and agents or branches, but no overseas...

CertificationsThe supplier reports UL and other product compliance certifications, together with ISO9001:2015, ISO45001:2018, and ISO14001 management-system certifications. These explicitly demonstrate broad product and management-system certification coverage.

R&D capabilityThe supplier provides ODM services, has four R&D engineers, and offers minor, full, and flexible customization. However, it does not have an available SDK, so the evidence supports product-development and customization capability but not SDK-based innovation support.

Production capacityManufacturing scope includes rectifiers, inductors, and distribution switch control equipment, with eight production lines reported. Quality processes include standardized finished-product inspection instructions, raw-material traceability, and maintained records, but the factory does not continuously reconcile quantities for every batch or mass production.

Customization capabilityThe supplier explicitly offers minor customization, full customization, and flexible customization, as well as ODM services and OEM services for popular brands. These statements provide direct evidence of broad customization and contract-manufacturing capability.

Product Q&A

Q:What services can be provided?

We accept customization, OEM, and ODM requests. We also provide professional technical solutions and after-sales service with local teams in America, Australia, Africa, and other places.

Q:How long does the delivery time take?

The usual shipping lead time is around 20-30 days after payment, depending on the quantity required.

Q:How long is the quality guarantee period?

We offer a 24-month quality assurance period. If a longer period is needed, an after-sales extension can be provided.

Q:What is the maximum power rating?

Our power transformers are made in power ratings up to 300 MVA with high voltage up to 345 kV.

Q:Are international standards customizable?

Yes, various international standards such as IEEE/ANSI, AS/NZS, IEC, EN 60076, and GOST can be customized.