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Fully Sealed Industrial Grade Transformer with Enhanced Cooling Features
US$1,039.00-5,788.00
1 Piece
Product profile
Customization
AvailableApplication
Power, Rectifier, Combined Transformer, Power Transformer,Phase
ThreeModel NO.
SF20Core
Core-type TransformerCooling Method
Oil-immersed Type TransformerWinding Type
Multi-winding TransformerCertification
ISO9001-2000, ISO9001, CCC, CEUsage
Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer, Three Phase TransformerFrequency Characteristics
Power FrequencyShape of Core
RingBrand
TenronyRated Frequency
50/60HzRated Voltage/Hv
11/33kvRated Voltage/LV
400VTransformer Capacity
1250-31500kVAConnection of Transformer Winding
Yyn0/Dyn11Winding
CopperTransport Package
Wooden CaseSpecification
1200*1350*1700mmTrademark
TENRONYOrigin
ChinaHS Code
8504109000Production Capacity
200/MonthlyKey features
Enhanced Cooling Efficiency: Forced air cooling boosts heat dissipation by 30-50% over conventional transformers.
High Capacity Output: Delivers ~40% more output than natural cooling at the same physical size.
Robust Overload Protection: Supports 120% continuous load and 150% short-term emergency dispatch.
Low Noise Operation: Features low-noise fans with a noise limit of 65 dB at 1 meter distance.
Comprehensive Safety Systems: Includes Buchholz relay, pressure relief valve, and oil level gauge.
Long Service Life: Designed for a service life of 30 years or more with sealed oil system.
Customizable Vector Group: Vector group YNd11 / YNyn0d11 is available for customization.
Company profile
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: ≤0.21h
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 used?
A:
The SF20 series uses ONAN (natural) or ONAF (forced air cooling) methods.
Q:What is the rated capacity range?
A:
The rated capacity ranges from 10,000 kVA to 120,000 kVA.
Q:Is the vector group customizable?
A:
Yes, the vector group YNd11 / YNyn0d11 is customizable.
Q:What is the expected service life?
A:
The transformer is designed for a service life of at least 30 years.
Q:What are the overload capabilities?
A:
It supports 120% rated load continuously and 150% for short-term emergency dispatch.
Send Inquiry
*To:
Zhejiang Tianrun Electric Co., Ltd.
Zhejiang Tianrun Electric Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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