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Sfz9-35kv 1600~31500kVA on Load Oil-Immersed Power Transformer
US$2,500.00
1-9 Pieces
US$2,400.00
10+ Pieces
Product profile
Customization
AvailableApplication
Power, Electronic, InstrumentPhase
ThreeModel NO.
SFZ9-35kVCore
Core-type TransformerCooling Method
Oil-immersed Type TransformerWinding Type
Separated Winding TransformerCertification
ISO9001-2000, ISO9001, CCCUsage
Power Transformer, Distribution TransformerFrequency Characteristics
Power FrequencyShape of Core
RingBrand
HeyiHigh Voltage (Kv)
6,6.3,10,10.5,11High Voltage Tap Range
5%Low Voltage (Kv)
0.4Vector Group Symbol
Yyn0 Dyn11Short Circuit Impedance (%)
4%,4.5%Transport Package
Wooden CaseTrademark
HEYIOrigin
Liushi, Yueqing, Zhejiang Province, ChinaHS Code
8443999090Production Capacity
10000Key features
Customizable Voltage Ratings: High voltage options include 6, 6.3, 10, 10.5, and 11 kV based on user requirements.
Flexible Technical Agreements: Rated capacity, voltage regulation, and connection groups are defined per user needs.
Oil-Immersed Cooling: Efficient oil-immersed cooling method ensures stable operation for power transformers.
Wide Capacity Range: Available capacities range from 1600 kVA to 31500 kVA for various power applications.
Multiple Vector Groups: Offers Yyn0 and Dyn11 vector group symbols to suit different connection requirements.
ISO and CCC Certified: Manufacturing process certified under ISO9001-2000, ISO9001, and CCC standards.
Short Circuit Impedance Options: Short circuit impedance available at 4% and 4.5% to meet specific grid needs.
Global Shipping Terms: Supports multiple Incoterms including FOB, CIF, DDP, and EXW for international trade.
Company profile

Business Type: Manufacturer/Factory, Trading Company, Other, Group CorporationExport Year: 2004-02-01Nearest Port: Ningbo, ShanghaiAverage Response Time: ≤5.04hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA, EXW, Others
AI-Powered supplier vetting
SummaryWenzhou Heyi Electrical Co., Ltd. is a China-based limited company identified as both a trading company and manufacturer/factory, with operations in Zhejiang and products including current transformers, relays, shunts, and current sensors. The supplier reports four production lines, 6–10 R&D engineers, 6–10 quality-control staff, ISO 9001 certification, self-operated import/export rights, broad global export markets, and off-peak lead time within 15 working days. Its stated facilities cover R&D, production, sales, marketing, and customer support, and it offers customized solutions. However, most service-capability, innovation-detail, traceability, overseas-support, customer-case, and sustainability fields are explicitly unknown. Audit information identifies TÜV Rheinland, but the audit type and evaluation result are coded values without interpretable conclusions from the provided context.
Supplier typeThe supplier is identified as a limited company in China and is variously classified as a trading company, manufacturer/factory, group corporation, and other entity. Its stated factory location, four production lines, and manufacturing industry classification support manufacturer involvement, although the records also describe the company nature as a trading company.
CertificationsThe supplier reports ISO 9001 management-system certification, and states that some products have been approved by CE and IEC certificates. TÜV Rheinland is listed as the audit organization, but the coded audit type and result cannot be interpreted as a positive or negative audit conclusion.
R&D capabilityThe supplier reports 6–10 years of total R&D-engineer experience and says it has dedicated R&D facilities focused on product design and customized solutions. Specific evidence for new-product launches, SDK availability, private mold design, 3D design, or other measured innovation outputs is unknown.
Production capacityThe supplier reports four production lines and stated output for relays, current transformers, shunts, and current sensors, with off-peak lead time within 15 working days. It also reports broad export-market coverage and self-operated import/export rights, indicating established production and export operations.
Customization capabilityThe supplier explicitly states that it specializes in designing, manufacturing, and delivering customized solutions and has its own R&D, production, and customer-support facilities. Nevertheless, the specific availability of private molds, 3D software design, and other customization services is unknown.
Product Q&A
Q:What is the voltage range for this transformer?
A:
The high voltage options are 6, 6.3, 10, 10.5, and 11 kV, with a low voltage of 0.4 kV.
Q:Can the technical specifications be customized?
A:
Yes, technical agreements are written according to user requirements including capacity, voltage, and impedance.
Q:What are the available vector group symbols?
A:
The transformer supports Yyn0 and Dyn11 vector group symbols.
Q:What certifications does the product hold?
A:
The product is certified under ISO9001-2000, ISO9001, and CCC standards.
Q:What are the lead times for production?
A:
Peak season lead time is one month, while off-season lead time is within 15 workdays.
Send Inquiry
*To:
Wenzhou Heyi Electrical Co., Ltd.
Wenzhou Heyi Electrical Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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