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S□ – M 35kV Oil-Immersed Power Transformer

S□ – M 35kV Oil-Immersed Power Transformer

An S□-50~40000/35 oil-immersed transformer is applicable to power systems with AC 50 Hz and rated operating voltage of 35 kV, serving as transformers for small and medium-sized substations.

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Technical Parameters Of 35kV Three-phase Power Transformer

Model Rated
Capacity
(kVA)		 Rated Voltage(kV) Vector
Group		 Loss(W) No-Load
Current(%)		 Short
Circuit
Impedance(%)
High Voltage(kV) Low Voltage(kV) No-Load
Loss		 Load
Loss
S11-50/35 50 35±5% 0.4 Yyn0 210 1210 1.8 6.5
S11-100/35 100 290 2020 1.62
S11-125/35 125 340 2380 1.56
S11-160/35 160 360 2830 1.48
S11-200/35 200 430 3300 1.39
S11-250/35 250 510 3960 1.26
S11-315/35 315 610 4760 1.26
S11-400/35 400 733 5760 1.16
S11-500/35 500 860 6900 1.16
S11-630/35 630 1040 8280 1.1

Note: All listed overall dimensions and weights are for reference only for design & type selection purposes. Final physical dimensions and weights shall prevail as per our official product drawings.

Technical Parameters Of 35kV Three-phase Power Transformer

Model Rated
Capacity
(kVA)		 Rated Voltage(kV) Vector
Group		 Loss(W) No-Load
Current(%)		 Short
Circuit
Impedance(%)
High Voltage(kV) Low Voltage(kV) No-Load
Loss		 Load
Loss
S11-800/35 800 35±5% 10.5
6.3
3.15		 Yd11 1.23 9.9 0.9 6.5
S11-1000/35 1000 1.44 12.1 0.9 6.5
S11-1250/35 1250 1.76 14.6 0.81 6.5
S11-1600/35 1600 2.12 17.5 0.76 6.5
S11-2000/35 2000 2.72 17.8 0.67 6.5
S11-2500/35 2500 3.2 20.7 0.67 6.5
S11-3150/35 3150 35±5%
38.5±5%		 3.8 24.3 0.63 7.0
S11-4000/35 4000 4.52 28.8 0.63 7.0
S11-5000/35 5000 5.4 33 0.54 7.0
S11-6300/35 6300 35±2×2.5%
38.5±2×2.5%		 11
10.5
6.6
6.3
3.3
3.15		 Yd11 6.56 36.9 0.54 7.5
S11-8000/35 8000 9.0 40.5 0.49 7.5
S11-10000/35 10000 10.88 47.7 0.49 7.5
S11-12500/35 12500 12.6 56.7 0.45 8
S11-16000/35 16000 15.2 69.3 0.45 8
S11-20000/35 20000 18 83.7 0.45 8
S11-25000/35 25000 21.28 99 0.36 8
S11-31500/35 31500 25.28 118.8 0.36 8
S11-40000/35 40000 28.8 155.25 0.48 8

Note: All listed overall dimensions and weights are for reference only for design & type selection purposes. Final physical dimensions and weights shall prevail as per our official product drawings.

Frequently Asked Questions

What types of transformers do you manufacture?

LBAJI manufactures various transformers, including:

  • Oil Immersed Distribution Transformers
  • Dry Type Transformers
  • Cast Resin Transformers
  • Power Transformers
  • Solar Step-up Transformers

Our transformers are widely used in:

  • Industrial plants
  • Solar farms
  • Commercial buildings
  • Mining projects
  • Infrastructure projects
What voltage levels can your transformers support?

Our transformers can be designed according to different project requirements.

Typical voltage ranges include:

  • Low Voltage: 0.4kV
  • Medium Voltage: 6kV, 10kV, 11kV, 20kV, 22kV, 33kV
  • Higher voltage levels available upon request

The transformer rating can also be customized according to project capacity requirements.

What is the difference between oil immersed transformers and dry type transformers?

Oil Immersed Transformers

Advantages:

  • Higher capacity range
  • Better cooling performance
  • Suitable for outdoor applications
  • Cost-effective for large projects

Applications:

  • Power grids
  • Industrial facilities
  • Solar farms

Dry Type Transformers

Advantages:

  • Fire resistant
  • Environmentally friendly
  • Low maintenance
  • Suitable for indoor installation

Applications:

  • Buildings
  • Hospitals
  • Data centers
  • Commercial facilities
What standards do your transformers comply with?

Our products can be manufactured according to international standards including:

  • IEC standards
  • IEEE standards
  • GB standards

Testing reports and technical documents can be provided according to project requirements.

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