Low Noise Oil-Cooled Transformer for Grid Applications

Level I Energy Efficiency, Energy-Saving Design

Compliant with the GB 20052-2020 first-class energy efficiency standard, with a no-load loss of ≤ 5.2 kW and a load loss of ≤ 35 kW, which is 20% lower than the comprehensive loss of the S11 series.

High-Precision Silicon Steel Sheet Iron Core

Utilizes 30ZH120 cold-rolled silicon steel sheet and a three-dimensional stepped stacking process to increase magnetic flux uniformity by 20%, reduce no-load current by 30%, and achieve an operating noise level of ≤ 58 dB (national standard: ≤ 65 dB).

Fully Sealed and Leak-Proof Structure

Features a corrugated oil tank and double-layer sealing ring design, passing the 0.04 MPa helium leak detection test. With IP55 protection level, it is dustproof and moisture-resistant, suitable for mines, coastal areas, and other high-humidity, dusty environments.

Enhanced Safety Design Against Short Circuits

Passed the national standard short-circuit test (25 kA/2s). The combination of winding axial compression and epoxy curing process ensures a deformation rate of < 1.5% after a short circuit, guaranteeing safe grid operation during sudden failures.

Convenient Installation and Maintenance

The modular split structure allows for on-site assembly within ≤ 4 hours. The design includes an oil level observation window and bottom oil drain valve, eliminating the need for core lifting during routine maintenance and reducing annual maintenance costs by 40%.

Model number	S13-3150-N×3
Rated volume quantity(KVA)	3150
High voltage(KV)	35/38.5
High voltage tap range(KV)	±5% or ±2×2.5%
Low voltage(KV)	3.15/6.3/10.5
Connection group label	yd11
No-load loss(W)	2130
Load loss(W)	23000
No-load electricity(%)	0.45
Short circuit resistance(%)	7

 

Products Export

 

Foreign exhibition

International Exhibition Validates Strength

As a reputable enterprise in China's power equipment manufacturing sector, Kechang Electric showcased its core product portfolio and technical solutions at the 2024 Tashkent International Energy Exhibition in Uzbekistan, reinforcing its presence in the Central Asian market.

Exhibition Highlights

• Professional Recognition: Engaged in technical exchanges with over 80 professionals from Central Asian power utilities and industrial clients
• Scenario Verification: Demonstrated product adaptability to extreme temperature conditions through live equipment presentations
• Service Commitment: Established technical communication channels with local partners during the event

Client Testimonial

"Kechang Electric's climate-specific protection designs and service framework impressed us during in-depth discussions at the exhibition."
- Procurement Manager, Industrial Zone, Uzbekistan

Our Advantages

✓ Global Expertise: Products deployed in 6 Central Asian countries, serving over 50 projects
✓ Rapid Support: Bilingual technical assistance (English/Russian) with solutions delivered within 48 hours
✓ Quality Assurance: All equipment undergoes rigorous cyclic testing from -30℃ to 50℃

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