Oil-immersed fully sealed power transformer for utility networks-10kV

The  7.2kV 10kV 15kV 15.5kV Class S13 Series Oil-Immersed Fully Sealed Power Transformer is a high-efficiency distribution transformer designed for reliability and longevity. As part of the S13 series, it meets stringent energy efficiency standards, significantly reducing no-load losses compared to conventional models. Its fully sealed, oil-immersed construction eliminates the need for a conservator, preventing insulating oil from contacting ambient air and moisture. This makes it an exceptionally robust and maintenance-free solution for continuous operation in utility and industrial power distribution networks.

This power transformer is fully compliant with international standards including IEC 60076-1, IEEE C57.12.00, ANSI C57.12.90, AS/NZS 60076.5 and EN 61558-1. It meets quality requirements and is widely adaptable to the operational needs of power grids in multiple overseas regions.

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Key Technical Features

• High Energy Efficiency (S13 Class):Incorporates advanced core materials and design to achieve superior energy performance, notably lowering no-load losses and resulting in substantial cost savings over the transformer's lifetime.

• Fully Sealed, Maintenance-Free Design:The hermetically sealed tank with corrugated or smooth tank walls ensures no breathing of the insulating oil. This prevents oxidation and moisture absorption, eliminating the need for periodic oil filtration or testing.

• Enhanced Reliability and Durability:The sealed construction protects the internal insulation system from environmental contaminants and humidity fluctuations, ensuring stable dielectric strength and a long service life even in harsh conditions.

• Robust Oil-Immersed Technology:Provides excellent heat dissipation and overload capacity. The insulating oil effectively cools the core and windings, allowing for reliable performance under peak load demands.

• Safe and Environmentally Considerate:Designed with pressure relief devices for safety. The sealed system minimizes the risk of oil leakage, protecting the surrounding environment.

Product model

• S: Three-phase

• 13: Performance Level

• M: Fully Sealed

• □: Rated Capacity (kVA)

• □: Rated High Voltage

Performance Parameters

Note: for transformers rated at 500 kva and below, the load loss values above the diagonal lines in the table apply to dyn 11 or yzn 11 connection groups, and the load loss values below the diagonal lines apply to yyno connection groups.

Conditions of use

• Altitude: No more than 1000m, indoor or outdoor.

• Ambient temperature: The highest ambient air temperature is +40℃, the highest daily average temperature is +30℃, maximum annual average temperature is +20℃, and the minimum temperature is -25℃.

• Transformers can be provided to operate under special conditions according to user requirements.