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Durable Low Loss Distribution Grade Oil Immersed Transformer for Rural Grids
US$369.00-1,788.00
1 Piece

Product profile

Customization

Available

Application

Power, Electronic, Instrument, Rectifier, Combined Transformer, Power Transformer,

Phase

Three

Model NO.

S20-M

Core

Core-type Transformer

Cooling Method

Oil-immersed Type Transformer

Winding Type

Multi-winding Transformer

Certification

ISO9001-2000, ISO9001, CCC, CE

Usage

Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer, Three Phase Transformer

Frequency Characteristics

Power Frequency

Shape of Core

Ring

Brand

Tenrony

Rated Frequency

50/60Hz

Rated Voltage/Hv

11/33kv

Rated Voltage/LV

400V

Transformer Capacity

30-31500kVA

Connection of Transformer Winding

Yyn0/Dyn11

Winding

Copper/Aluminum

Transport Package

Wooden Case

Specification

1800*1300*2000mm

Trademark

TENRONY

Origin

China

HS Code

8504109000

Production Capacity

500/Monthly

Key features

Forced Air Cooling System: ONAF technology doubles dissipation efficiency with intelligent temperature control and redundant fans.
High Overload Capacity: Handles 120% continuous and 150% emergency overload, extending insulation life by 30%-50%.
Wide Capacity Range: Rated capacity from 10,000 to 120,000 kVA for large-scale power transmission and distribution.
Customizable Specifications: Offers customizable voltage, frequency, winding type, and vector group to meet specific grid needs.
Robust Safety Protection: Equipped with Buchholz relay, pressure relief valve, and sealed oil system to prevent leakage.
OEM/ODM Support: Full customization available from samples or designs with dedicated R&D engineers and production lines.

Company profile

Zhejiang Tianrun Electric Co., Ltd.
Importers and ExportersFull Customization100% Finished Products InspectionR&D Capabilities
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 Year CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤0.01h

About Our Factory & Business Background

AddressNo. 788 Wenyi Road, Bihu Industrial Park, Liandu District, Lishui, Zhejiang, China
Plant Area50369.12 square meters
Number of Employees167
Registered Capital107,580,000 RMB
Terms of PaymentT/T
International Commercial Terms(Incoterms)FOB, CIF
Average Lead TimePeak Season Lead Time: one month Off Season Lead Time: within 15 workdays
Minimum Order Quantity1
Supply Chain Partners80

Our Production Capability & Technical Expertise

Main ProductsTransformer Switchgear Substation
Production Lines2
Production MachinesPunching machine, Laser cutting machine, CNC bending machine, Winding machine, Drying machine
QA/QC inspectors3 people
Inspection Type for Finished Products100% inspection(Visual inspection & Function inspection)
Inspection Method for Finished ProductsFinished product checked by packing staff
R&D Engineers7 people
Traceability of Raw MaterialsYes

Our Industry Experience & Global Business Record

Year of Establishment2003-12-05
Main MarketsDomestic
Repeat Buyers Choice30%~50%
Number of Foreign Trading Staff1
Overseas Agent/BranchYes
New Products Launched in Last yearYes

Our Certifications, Standards & Industry Recognition

Management System CertificationISO9001:2015, ISO14001, ISO45001:2018
Product CertificationCE
Cooperated with Fortune 500No

Product Q&A

Q:What is the cooling method of the SF20 transformer?
A:
The SF20 series uses a forced air cooling system (ONAF) with multiple low-noise axial fans that activate automatically based on temperature, significantly improving heat dissipation efficiency compared to conventional oil-immersed transformers.
Q:What is the rated capacity range of this transformer?
A:
The rated capacity ranges from 10,000 kVA to 120,000 kVA, suitable for various applications from normal load conditions to large substations and power plants.
Q:Can the transformer handle overload conditions?
A:
Yes, it supports 120% rated load continuously with fans at full speed and 150% rated load for short durations during emergencies, ensuring dispatch response time and stable operation.
Q:What certifications does the product have?
A:
The transformer is certified with ISO9001-2000, ISO9001, CCC, and CE, and complies with GB/T 1094 (equivalent to IEC 60076) standards.
Q:Is customization available for this transformer?
A:
Yes, customization is available for rated frequency (50/60Hz), rated voltage, transformer capacity, winding connection, and winding material (Copper/Aluminum). OEM and ODM services are also supported.

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