S-ML Series Three-dimensional Wound Core 10KV Oil-immersedTransformer

Triangle s11-mrl-100kvaModel NO.S11-MRLApplicationPower, Electronic, InstrumentPhaseThreeCoreCore-type TransformerCooling MethodOil-immersed Type TransformerWinding TypeMulti-winding TransformerTrademarkEberrySpecificationISO9001, SONCAP, SGS, TUVOriginChinaHS Code85042200001. Rated voltage: 6.3kV, 10kV, 11kV, 13.2kV, 13.8kV, 15kV, 20KV, 22KV, 33KV, 35KV 2. Rated power: 5kva ~ 25000kva 3. Stardard: IEC60076, GB1094-1996 4. Frequency: 50HZ /60HZ 5. Vector group: Dyn11, Yyn0, Ynd11, or others 6. Cooling: ONAN/ ONAF/ OFAF....

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Triangle s11-mrl-100kva

Model NO.	S11-MRL
Application	Power, Electronic, Instrument
Phase	Three
Core	Core-type Transformer
Cooling Method	Oil-immersed Type Transformer
Winding Type	Multi-winding Transformer
Trademark	Eberry
Specification	ISO9001, SONCAP, SGS, TUV
Origin	China
HS Code	8504220000

1. Rated voltage: 6.3kV, 10kV, 11kV, 13.2kV, 13.8kV, 15kV, 20KV, 22KV, 33KV, 35KV

2. Rated power: 5kva ~ 25000kva

3. Stardard: IEC60076, GB1094-1996

4. Frequency: 50HZ /60HZ

5. Vector group: Dyn11, Yyn0, Ynd11, or others

6. Cooling: ONAN/ ONAF/ OFAF

7. Tap changer: 3 levels; 5 levels; 7 levels; 13 levels; 17 levels

8. Rating plate: : Yes (JSM brand or Customer brand)

9. Corrugated refrigeration panels: Yes ( Four sides of the transformer shell)

10. Parts: 1)Oil draining valve 2)Oil level indicator 3)Thermometer

About Our Company:

1.26 years' manufacturing experience with three subsidiaries

2. Won tenders aboard

3. IEC 60076 & ISO certificate

4. OEM / ODM

5. Competitive price with 100% Cu winding

6. Production capacity: 10, 000, 000 kVA per year

REFERENCES ISO 1461: Hot dip galvanized coatings on fabricated iron and steel articles Specifications and test methods. IEC 60076: Power transformers. IEC 60044: Instrument transformers. IEC 60296: Specification for unused mineral insulating oil for transformers and switchgear. IEC 60354: Loading guide for oil immersed power transformers. IEC 60214: Tap-changers - Part 1: Performance requirements and test methods, Part 2: Application guide. IEC 60512: Connectors for electronic equipment. ROUTINE TEST to IEC 60076 (to be done during acceptance testing at factory) Measurement of winding resistance Ratio test Vector group Separate source voltage withstand test Induced over-voltage Insulation resistance Oil leakage test on fully assembled transformer for 12 hours Measurement of impedance voltage Magnetic balance Measurement of no-load loss and current Measurement of load loss (at normal & extreme taps) Tests on on-load tap-changer Tests on on-load tap-changer remote control panel Efficiency at 50%, 75%, 100% loading at unity p. F and rated terminal voltage (Corrected to 75C) Lightning impulse withstand test

Type Tests to IEC 60076 (to be done during acceptance testing at factory) Temperature rise test To be performed on one unit during acceptance testing. Lightning Impulse Withstand Test is already listed under Routine Tests as per IEC 60076.

S-ML Series Three-dimensional Wound Core 10kV Oil-Immersed Transformer – High Efficiency & Compact Design

The S-ML Series Three-dimensional Wound Core 10kV Oil-immersed Transformer (e.g., S11-MRL-100kVA) represents a breakthrough in transformer design, combining a fully enclosed oil-immersed structure with an innovative three-dimensional wound core. This geometry minimizes magnetic flux leakage and core losses, delivering exceptional energy efficiency that exceeds IEC 60076 and GB1094 standards—ideal for urban grids, industrial plants, and renewable energy integration.

Built with 100% oxygen-free copper windings and corrugated cooling panels on all four sides, the unit ensures superior heat dissipation and long-term reliability under ONAN, ONAF, or OFAF cooling modes. Its compact footprint and low-noise operation make it suitable for space-limited substations, while multi-level tap changers (up to 17 steps) provide precise voltage regulation across diverse load conditions.

Three-dimensional core oil transformer – reduced hysteresis and eddy current losses for unmatched energy savings
Compact high-efficiency distribution transformer – ideal for modern smart grids and green infrastructure projects
Copper-wound sealed power unit – maintenance-free, corrosion-resistant, and built for 25+ years of service

Available from 5kVA to 25,000kVA, this transformer supports primary voltages from 6.3kV up to 35kV, with flexible vector groups (Dyn11, Yyn0, Ynd11) to match global grid requirements. Every unit undergoes rigorous routine and type tests per IEC 60076—including lightning impulse, temperature rise, and load loss verification—and is certified to ISO 9001, TÜV, and SONCAP standards.

Manufactured by Eberry with over 26 years of experience and an annual capacity of 10 million kVA, the S-ML series offers OEM/ODM flexibility, competitive pricing, and proven performance in international markets—making it a trusted solution for utilities seeking sustainable, future-ready power distribution.