Leilang Electric proudly presents the 1500KVA (1.5MVA) 4160V to 600Y/347V three-phase hermetically sealed substation transformer, engineered and manufactured in strict compliance with ANSI/IEEE C57 and DOE 2016 international standards for North American power distribution systems. This copper-wound, self-cooled (ONAN) transformer delivers an industry-leading 99.40% energy efficiency and exceptional long-term reliability, making it the ideal choice for industrial facilities, commercial complexes, data centers, and utility grid applications.

Our 1500KVA substation transformer features a fully hermetically sealed tank design that completely isolates the insulating oil from ambient air, preventing moisture ingress, oil oxidation, and internal corrosion, significantly extending the transformer's service life. Equipped with high-grade copper windings and a low-loss silicon-steel core, it achieves minimal energy waste and stable performance even under continuous full-load operation.

Designed for maximum safety and ease of use, Leilang Electric's transformer comes standard with a comprehensive suite of monitoring and protection components including top oil temperature gauges, liquid level gauges, automatic pressure relief valves, and externally operated de-energized tap changers. Every unit undergoes 10+ rigorous factory tests before shipment to guarantee compliance with all stated performance parameters. With a production capacity of 500 units per month and a standard lead time of 30 days, we can fulfill both small and large-scale orders efficiently. All our transformers come with a 24-month comprehensive warranty from the bill of lading date, backed by lifetime technical support.

• Global Standard Compliance: Fully certified to ANSI/IEEE C57, DOE 2016, CE, and ISO standards
• 99.40% Ultra-High Efficiency: Copper windings and high-grade silicon-steel core minimize energy consumption
• Hermetically Sealed Maintenance-Free Design: Isolates insulating oil from air, preventing corrosion and extending service life
• Reliable Self-Cooling: ONAN (Oil Natural Air Natural) cooling system eliminates moving parts and reduces maintenance
• Comprehensive Safety Protection: Equipped with automatic pressure relief valves, over-temperature monitoring, and ground fault safeguards
• Flexible Configuration: Custom voltage ratings, K-factor ratings, and enclosure designs available upon request

Our 1500KVA 4160V to 600Y/347V substation transformer is designed, built, and tested in full compliance with ANSI/IEEE C57 and DOE 2016 energy efficiency standards for North American markets. It also holds CE and ISO certifications, ensuring global quality and safety compliance.

This transformer achieves an impressive 99.40% full-load efficiency, thanks to its high-grade copper windings and low-loss silicon-steel core. Compared to standard efficiency transformers, it can reduce annual energy losses by up to 30%, resulting in significant long-term operational cost savings.

The hermetically sealed design completely isolates the insulating oil from ambient air and moisture, preventing oil oxidation, internal corrosion, and sludge formation. This eliminates the need for regular oil maintenance and extends the transformer's service life to 30+ years.

Our standard 1500KVA substation transformer uses high-purity copper windings, which offer superior electrical conductivity, lower resistance losses, and better thermal performance compared to aluminum windings. Copper windings also provide enhanced durability and reliability for heavy-duty applications.

It uses the reliable ONAN (Oil Natural Air Natural) self-cooling method, which relies on natural convection to dissipate heat. This design has no moving parts, making it virtually maintenance-free, requiring only periodic visual inspections of oil level and temperature.

Every transformer undergoes 10+ rigorous factory tests before shipment, including winding resistance test, insulation resistance test, voltage ratio error test, short-circuit impedance test, no-load and load loss tests, induced voltage withstand test, and pressure integrity test to ensure quality compliance.