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Large Industrial Grade Transformer with Advanced Forced Air Cooling
US$1,039.00-5,788.00
1 Piece

Product profile

Customization

Available

Application

Power, Rectifier, Combined Transformer, Power Transformer,

Phase

Three

Model NO.

SF20

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

1250-31500kVA

Connection of Transformer Winding

Yyn0/Dyn11

Winding

Copper

Transport Package

Wooden Case

Specification

1200*1350*1700mm

Trademark

TENRONY

Origin

China

HS Code

8504109000

Production Capacity

200/Monthly

Key features

Forced Air Cooling System: Boosts heat dissipation 30-50% with redundant low-noise fans and automatic activation.
High Capacity Output: Delivers ~40% more output than ONAN at same size, scaling up to 120,000 kVA.
Robust Overload Protection: Handles 120% continuous load and 150% short-term emergency dispatch safely.
Comprehensive Safety Features: Includes Buchholz relay, pressure relief valve, and sealed oil system to prevent leaks.
Customizable Vector Group: Offers YNd11 / YNyn0d11 configurations to match specific grid requirements.
Full Customization Options: Supports full customization, minor customization, and design-based customization.

Company profile

Zhejiang Tenrony 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: ≤1.17h

About Our Factory & Business Background

AddressNo. 788 Wenyi Road, Bihu Town, 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 used?
A:
The transformer uses ONAN (Natural) and ONAF (Forced Air Cooling) methods, with forced air boosting efficiency by 30-50%.
Q:What is the rated capacity range?
A:
The SF20 series ranges from 10,000 kVA to 120,000 kVA, with ONAF scaling up to 63,000+ kVA.
Q:Can the vector group be customized?
A:
Yes, the vector group is customizable, offering options like YNd11 and YNyn0d11.
Q:What are the overload capabilities?
A:
It supports 120% rated load continuously and 150% rated load for short-term emergency dispatch.
Q:Is OEM and ODM service available?
A:
Yes, the manufacturer offers both OEM and ODM services, including full customization and customization from designs.

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