PRODUCT DETAIL / OIL-IMMERSED TRANSFORMERS

S20 10kV Oil Immersed Transformer

10kV / 0.4kV · Oil-immersed cooling · Fully sealed tank

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01 / OVERVIEW

Source-backed product overview.

Read the supplied description before sharing project requirements.

We manufacture the S20 10kV Oil Immersed Transformer, a nextgeneration energysaving product. It delivers low loss, low noise and outstanding durability, supplying reliable and stable power for industrial, commercial and powerutility projects.

We design our S20 10kV Oil Immersed Transformer to meet modern energyefficiency and performance standards. We adopt highquality siliconsteel cores together with an innovative windingstructure design, which greatly cuts down both noload losses and load losses.

Its oilfullyimmersed cooling system delivers excellent heat dissipation. The transformer maintains stable operation even under heavyload conditions. Besides, our fullysealed tank design blocks moisture and oxidation. It extends service life and lowers maintenance workload.

Our S20 series transformers have been deployed worldwide in powergrid systems, industrial sites, commercial premises and infrastructure projects. Compact footprint, safe operation and strong overload capacity make the S20 series one of our most popular offerings. Customers benefit from its solid performance and favorable totalcostofownership over longterm operation.

PRODUCT / APPLICATION VIEW

See the equipment in context.

Product photography and application imagery are kept as separate visual roles for review.

Transformer equipment in a grid distribution setting — Application context

Outdoor power distribution equipment — Application context

02 / FEATURES

Capabilities described in the source.

UltraLow Energy Loss

Our enhanced core construction and premiumgrade materials greatly reduce both noload and load losses. This helps endusers cut operational expenses and delivers longterm energy savings for powerdistribution systems.

Superior Thermal Performance

The oilimmersed cooling system effectively prevents excessive internal temperature rise. It maintains normal internal temperature and enables nonstop operation even under heavyduty cycles or harsh environmental conditions.

Extended Service Life

We adopt a hightightness fullysealed structure. It stops moisture and air from entering the tank, significantly slowing insulation ageing and oxidation. This improves transformer service life and operational reliability.

Low Noise Operation

We apply advanced corestacking technology plus antivibration design to lower operational noise. The transformer fits urban zones, business districts and other noisesensitive installation sites.

High Mechanical Strength

Robust winding construction delivers excellent shortcircuit withstand capability. The transformer retains structural integrity during electrical faults, safeguarding system safety and stable performance.

Minimal Maintenance Requirements

The hermeticallysealed oil tank restricts oil contamination and extends maintenance intervals. It reduces fulllifecycle costs while delivering consistent, dependable longrun performance.

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03 / SPECIFICATIONS

Technical parameters.

Source table retained in full where supplied.

Product Model	Rated Capacity (kVA)	Vector Group Symbol	HV Voltage (kV)	Tap Range	LV Voltage (kV)	Noload Loss (W)	Load Loss (W at 75℃)	Noload Current (%)	Shortcircuit Impedance (%)
S20	30	Dyn11	10	±2×2.5%	0.4	70	505	1.2	4
S20	50	Dyn11	10	±2×2.5%	0.4	90	730	1.04	4
S20	63	Dyn11	10	±2×2.5%	0.4	100	870	0.96	4
S20	80	Dyn11	10	±2×2.5%	0.4	115	1050	0.96	4
S20	100	Dyn11	10	±2×2.5%	0.4	135	1265	0.88	4
S20	125	Dyn11	10	±2×2.5%	0.4	150	1510	0.88	4
S20	160	Dyn11	10	±2×2.5%	0.4	180	1850	0.8	4
S20	200	Dyn11	10	±2×2.5%	0.4	215	2185	0.8	4
S20	250	Dyn11	10	±2×2.5%	0.4	260	2560	0.72	4
S20	315	Dyn11	10	±2×2.5%	0.4	305	3065	0.72	4
S20	400	Dyn11	10	±2×2.5%	0.4	370	3615	0.64	4
S20	500	Dyn11	10	±2×2.5%	0.4	430	4330	0.64	4
S20	630	Dyn11	10	±2×2.5%	0.4	510	4960	0.48	4.5
S20	800	Dyn11	10	±2×2.5%	0.4	630	6000	0.48	4.5
S20	1000	Dyn11	10	±2×2.5%	0.4	745	8240	0.48	4.5
S20	1250	Dyn11	10	±2×2.5%	0.4	870	9600	0.4	4.5
S20	1600	Dyn11	10	±2×2.5%	0.4	1050	11600	0.4	4.5
S20	2000	Dyn11	10	±2×2.5%	0.4	1225	14640	0.32	5
S20	2500	Dyn11	10	±2×2.5%	0.4	1440	16960	0.32	5

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Before quotation, confirm: proof-and-claims.

04 / SELECTION NOTES

Match the equipment to the installation.

Electrical scope

Confirm voltage, capacity, frequency, vector group and tap range against the project brief.

Site conditions

Confirm indoor or outdoor placement, cooling, protection and environmental conditions.

Evidence review

Source claims and standards remain subject to final technical and document confirmation.

05 / APPLICATIONS

Where this equipment is positioned.

Confirm the installation environment and electrical requirements for this model.

Transformer equipment in a grid application — Grid distribution

Transformer equipment in an industrial application — Industrial facilities

Transformer equipment in a renewable-energy application — Renewable energy

06 / PROOF

Trace the supplied evidence.

The source document is retained in the private inventory as src-006. Claims, certifications and performance figures marked in the inventory remain pending confirmation before production publication.

Pending confirmation: proof-and-claims.

07 / SERVICE