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S11 Copper Winding off-Circuit Tap-Changing Distribution Transformer
US$1,999.00-4,995.00
1 Piece

Product profile

Customization

Available

Application

Power, Electronic, Instrument

Phase

Three

Model NO.

S11

Core

Core-type Transformer

Cooling Method

Oil-immersed Type Transformer

Winding Type

Separated Winding Transformer

Certification

ISO9001-2000, ISO9001, CCC

Usage

Power Transformer, Distribution Transformer

Frequency Characteristics

50Hz/60Hz

Shape of Core

Ring

Brand

Yifa

Capacity

10 to 2500 kVA

Color

Green

Voltage

10kv/0.4kv, 11kv/0.4kv, 33kv/0.4kv

Cooling

Onan

Tank

Corrugated / Conservator

Standard

IEC / UL

OEM

Supported

Oil Level Indicator

Provided

No-Load Loss

Low Loss Design

Impedance Voltage

4% to 6% (Standard)

Ambient Temperature

-25°C to +45°C

Transport Package

Wooden Box

Specification

10KV

Trademark

YIFA

Origin

China

HS Code

8504319000

Production Capacity

50000PCS/Year

Key features

Adopts cold-rolled silicon steel core for lower no-load loss
Fully sealed structure to effectively prevent moisture and impurities
Pure copper winding with excellent conductivity and low operating temperature rise
Robust Conservator Tank Design The conservator tank stabilizes oil level and isolates the oil from air, extending oil service life and preventing moisture ingress.
High-Voltage Porcelain Bushings Anti-pollution, high-strength porcelain bushings ensure safe and stable connection on both HV and LV sides.
Low Loss, Low Noise Operation Optimized magnetic circuit and core clamping structure reduce noise and losses, meeting international energy efficiency standards.
Wide Capacity Range Available Available from 10 kVA to 2500 kVA, suitable for utility, industrial, commercial, and rural power distribution networks.
Strict Quality Control & Testing 100% routine tests including ratio, resistance, insulation, and oil dielectric strength before shipment.
Customizable Voltage Ratio & Tapping Offers various voltage combinations and off-circuit / on-load tap changing options to match local grid requirements.
Long Service Life & Low Maintenance Durable anti-corrosion coating, reliable structure, and minimal maintenance needs for 20+ years of service.

Company profile

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2018-12-01 CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: >24h CertifiedTerms of Payment: LC, T/T

About Our Factory & Business Background

AddressQiaoqian Industrial Zone, Liushi, Yueqing City, Wenzhou, Zhejiang, China
Plant Area800 square meters
Number of Employees148
Registered Capital101,600,000 RMB
International Commercial Terms(Incoterms)FOB, CIF, CFR
Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Our Production Capability & Technical Expertise

Main ProductsPower Transformer, HV and LV Complete Sets of Power Substations, LV Electrical Equipment
Production MachinesAging Facility, Calibration Table, Laser Marking Facility, Pad Printing Facility, Residual Current Protector Tester
R&D Engineers10 people
Own BrandYes

Our Industry Experience & Global Business Record

Year of Establishment2000-02-25
Main MarketsSoutheast Asia/ Mideast, Africa, Domestic
Number of Foreign Trading Staff6
Overseas Agent/BranchNo

Our Certifications, Standards & Industry Recognition

Product CertificationCCC, Others

Product Q&A

Q:What is the capacity range of this oil-immersed distribution transformer?
A:
We can supply from 10 kVA to 2500 kVA, covering single-phase and three-phase types. Customized capacities are also available upon request.
Q:Is this transformer fully sealed or with a conservator tank?
A:
Both designs are available. The model shown uses a conservator tank for oil level stabilization. We also produce fully sealed types for specific applications.
Q:What are the no-load loss and load loss levels?
A:
Our transformers are designed to meet international energy efficiency standards (such as IEC 60076 and local IE2/IE3 equivalents). Exact loss values depend on capacity and voltage class please contact us for the detailed technical datasheet.
Q:Do you provide tap changing?
A:
Yes. We offer both off-circuit tap changer (manual, de-energized) and on-load tap changer (OLTC) options, depending on your requirements.
Q:What cooling method does this transformer use?
A:
It uses oil natural air natural (ONAN) cooling. The corrugated tank design increases the heat dissipation area for reliable continuous operation.

Send Inquiry

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