Transformers

S22 Oil-Immersed Silicon Steel Tridimensional Toroidal Core Transformer

The S22 series adopts a patented “spatial tridimensional triangular” toroidal core structure, achieving symmetrical three-phase magnetic circuits. Compared with conventional stacked-core transformers, it delivers 25–40% lower no-load loss, 5–10dB noise reduction, and superior short-circuit resistance — making it the preferred choice for urban grid modernization and industrial distribution.

Product Specifications

Category Transformers

Product Description

Parameter	Specification
Rated Voltage	10kV / 0.4kV
Capacity Range	50kVA – 1,600kVA
Frequency	50Hz / 60Hz
Core Material	Cold-Rolled Silicon Steel (Tridimensional Toroidal)
Winding Material	Copper
Cooling Method	ONAN (Oil Natural Air Natural)
Energy Efficiency Grade	Grade I (GB20052-2024)
No-Load Loss Reduction	25–40% vs. conventional stacked core
Insulation Level	LI75AC35 / LI75AC35
Connection Group	Dyn11
Standards	Designed to align with IEC 60076

（Key Selling Points）：

✅ 3D toroidal core: symmetrical magnetic circuit, lower harmonic distortion
✅ Grade I energy efficiency: meets and exceeds GB20052-2024 national standard
✅ Low noise: 5–10dB quieter than conventional stacked core transformers
✅ Maintenance-free: sealed tank design, no periodic oil replacement required
✅ OEM/ODM available for capacity, voltage and connection group customization

Power Equipment and EV Charging Solutions Supplier

Apex Power Systems provides transformers, box-type substations, complete switchgear, EV charging piles, and charging station controller solutions for power distribution and EV charging projects.