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

Product Description

Product Overview

The S22 Oil-Immersed Silicon Steel Tridimensional Toroidal Core Transformer is a highly reliable, high-performance distribution transformer designed for three-phase AC power networks. Featuring an innovative three-dimensional wound core structure made of high-quality cold-rolled grain-oriented silicon steel, this transformer offers excellent magnetic properties, reduced material consumption, and lower operational noise, making it a robust and economical choice for standard power distribution applications.

Key Features

  • Tridimensional Wound Core Structure: Seamless wound core rings arranged in a 3D equilateral triangle configuration eliminate air gaps, optimizing core magnetic efficiency.
  • High-Quality Silicon Steel Core: Constructed using premium grain-oriented silicon steel sheets, guaranteeing exceptional flux density and minimal losses.
  • Fully Sealed Maintenance-Free Design: Corrugated steel tank with expansion and contraction capabilities accommodates oil volume changes, preventing oil degradation.
  • High Short-Circuit Resistance: The compact cylindrical winding and solid triangular core clamping structure provide unparalleled resistance to mechanical forces.
  • Lower Noise & Low No-Load Current: Symmetrical core design naturally reduces magnetostriction and operating vibration, minimizing auditory impact.

Technical Specifications

Rated Capacity Range 30 kVA to 1600 kVA (Consult for specifications)
Rated Primary Voltage 10 kV / 11 kV (Custom configurations available)
Rated Secondary Voltage 0.4 kV
Core Structure Symmetrical 3D Wound Core
Core Material High-grade cold-rolled silicon steel
Cooling Method ONAN (Oil Natural Air Natural)
Vector Group Dyn11 / Yyn0
Temperature Rise Limits Winding ≤ 65K, Oil ≤ 60K

Applications

  • Urban residential estates, suburban power grids, and rural power networks.
  • Commercial plazas, administrative centers, and office compounds.
  • Medium-scale factories, construction sites, and municipal utility installations.

Quality & Standards

Engineered in strict conformance with IEC 60076 standards. ISO 9001 and CE certifications apply to standard manufacturing models.

Need a customized transformer configuration? Consult our engineering team for specifications.

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.

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Apex Power Systems (Nanjing) Co., Ltd.

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