Dowei Electric Distribution Transformer SDT-12,SDT-23,SDT-33,SDT-A-12

Product catalog summary

General Description:
NINGBO DOWEI ELECTRIC CO., LTD. offers a range of distribution transformers designed to meet international standards such as IEC 60076, ANSI/IEEE Std C57.12, and NEMA. These transformers are certified by ISO 9001, KEMA, CESI, CE, TUV, UL, and ASTA. They are available with mineral oil or vegetable oil (FR3) and are free of PCBs. Key features include low loss, low partial discharge, low temperature rise, seismic design, and structural design compliant with ASTM A325, ANSI/AISC 360, and AWS D1.1. They are also suitable for high altitudes up to 5000m.

12kV Distribution Transformer:
This transformer is a three-phase, two-winding type with NLTC. It offers a range of rated capacities from 30 kVA to 3150 kVA. The voltage and tapping range is 7.2±2×2.5% to 13.2±2×2.5% with vector groups Yyn0 or Dyn11. The no-load and on-load losses vary with capacity, and the impedance ranges from 0.4% to 5.5%. The transformers are designed with low no-load current and varying weights and dimensions.

23kV Distribution Transformer:
Similar to the 12kV model, this transformer also features a three-phase, two-winding design with NLTC. It supports capacities from 30 kVA to 1600 kVA, with a voltage and tapping range of 23±2×2.5% to 25±2×2.5%. The no-load and on-load losses, impedance, and dimensions are specified for each capacity.

33kV Distribution Transformer:
This model supports capacities from 50 kVA to 3150 kVA, with a voltage and tapping range of 33±2×2.5% to 35±2×2.5%. It features vector groups Yyn0 or Dyn11, with specified no-load and on-load losses, impedance, and dimensions for each capacity.

Amorphous Alloy Transformer:
Designed for high magnetic susceptibility and low coercivity, this transformer offers low loss and low magnetizing current with higher stability. It is available in capacities from 30 kVA to 1600 kVA, with a voltage and tapping range of 7.2±2×2.5% to 13.2±2×2.5%. The no-load and on-load losses, impedance, and dimensions are detailed for each capacity.

Catalog excerpts

Dowei Electric Distribution Transformer SDT-12,SDT-23,SDT-33,SDT-A-12-1

Power Transmission & Distribution One stop equipments solution Distribution Transformer

Open the catalog to page 1

Dowei Electric Distribution Transformer SDT-12,SDT-23,SDT-33,SDT-A-12-2

12kV Distribution TransformerGeneral Description: • IEC 60076, ANSI/IEEE Std C57.12, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Mineral Oil / Vegetable Oil (FR3), Free PCB • Low loss, Low partial discharge, Low temperature rise • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 60076 & IEEE C57.12, ~ 5000m 12kV Three-phase Two-winding Distribution Transformer with NLTC Voltage and tapping range(kV) No-load On-load Impedance loss (W) loss (W) (%) NINGBO DOWEI ELECTRIC CO., LTD. 608, Lingyun Building...

Open the catalog to page 2

Dowei Electric Distribution Transformer SDT-12,SDT-23,SDT-33,SDT-A-12-3

23kV Distribution TransformerGeneral Description: • IEC 60076, ANSI/IEEE Std C57.12, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Mineral Oil / Vegetable Oil (FR3), Free PCB • Low loss, Low partial discharge, Low temperature rise • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 60076 & IEEE C57.12, ~ 5000m 23kV Three-phase Two-winding Distribution Transformer with NLTC Voltage and tapping range(kV) No-load On-load Impedance loss (W) loss (W) (%) NINGBO DOWEI ELECTRIC CO., LTD. 608, Lingyun Building...

Open the catalog to page 3

Dowei Electric Distribution Transformer SDT-12,SDT-23,SDT-33,SDT-A-12-4

33kV Distribution TransformerGeneral Description: • IEC 60076, ANSI/IEEE Std C57.12, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Mineral Oil / Vegetable Oil (FR3), Free PCB • Low loss, Low partial discharge, Low temperature rise • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 60076 & IEEE C57.12, ~ 5000m 33kV Three-phase Two-winding Distribution Transformer with NLTC Voltage and tapping range(kV) No-load On-load Impedance loss (W) loss (W) (%) NINGBO DOWEI ELECTRIC CO., LTD. 608, Lingyun Building...

Open the catalog to page 4

Dowei Electric Distribution Transformer SDT-12,SDT-23,SDT-33,SDT-A-12-5

Amorphous Alloy TransformerGeneral Description: • IEC 60076, ANSI/IEEE Std C57.12, NEMA • ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Mineral Oil / Vegetable Oil (FR3), Free PCB • High magnetic susceptibility, Low coercivity • Low loss and Low magnetizing current, Higher stability • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 60076 & IEEE C57.12, ~ 5000m 12kV Three-phase Two-winding Amorphous Alloy Transformer with NLTC tapping range(kV) Vector No-load On-load Impedance group loss (W) loss (W) (%) NINGBO...

Open the catalog to page 5