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35kV Oil-Immersed Transformer
Energy-efficient 35kV-class oil-immersed transformer for commercial distribution, residential communities, rural grids, heavy industrial loads, and township substations.
Quick Specifications
Power Rating
30-31500 kVA
Voltage Class
33kV / 35kV / 38.5kV, 0.4-11kV secondaries
Frequency
50/60 Hz
Application
Commercial / Residential / Rural Grid / Heavy Industry / Township Substations
Product Overview
This series of oil-immersed transformers breaks through the traditional planar structure and adopts a three-phase symmetrical three-dimensional structure.
The magnetic circuits of the three-phase iron cores are completely symmetrical, which greatly reduces magnetic resistance and significantly lowers exciting current and no-load loss.
It is an energy-efficient transformer that uses traditional materials while achieving lower operating noise and a more compact overall structure.
The design delivers strong performance in energy conservation, consumption reduction, material saving, and environmental protection.
Application Scenarios
- Commercial power distribution
- Residential community power supply
- Rural power grid distribution
- Heavy industrial power supply
- Township small-scale substations
Applicable Standards
- GB 1094-2013 Power Transformer
- GB/T 6451-2015 Technical Parameters and Requirements for Oil-Immersed Power Transformers
- IEC 60076 Power Transformers
Normal Service Conditions
- Installation altitude below 1000 meters.
- Highest ambient temperature: +40 degrees Celsius.
- Highest daily average temperature: +20 degrees Celsius.
- Lowest outdoor temperature: -25 degrees Celsius.
Performance Parameters
The tables below show representative 35kV-class technical data for low-voltage distribution service and medium-voltage substation applications.
35kV Series Technical Parameter Table (30-2500 kVA)
| Rated Capacity (kVA) | Voltage Group (HV / LV) | Vector Group | No-Load Loss (W) | Load Loss (W) | No-Load Current (%) | Impedance Voltage (%) | Boundary Dimensions (L x W x H, mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 30 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 100 | 690 / 660 | 2.1 | 5.5 | 670 x 310 x 615 | 346 |
| 50 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 130 | 1010 / 960 | 2.0 | 5.5 | 700 x 325 x 630 | 417 |
| 80 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 180 | 1440 / 1370 | 1.8 | 5.5 | 755 x 355 x 690 | 556 |
| 100 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 200 | 1730 / 1650 | 1.6 | 5.5 | 785 x 360 x 685 | 619 |
| 125 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 240 | 2080 / 1980 | 1.5 | 5.5 | 805 x 370 x 720 | 703 |
| 160 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 290 | 2540 / 2420 | 1.4 | 5.5 | 850 x 385 x 735 | 794 |
| 200 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 340 | 3000 / 2860 | 1.3 | 5.5 | 865 x 405 x 805 | 935 |
| 250 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 400 | 3520 / 3350 | 1.2 | 5.5 | 905 x 415 x 935 | 1086 |
| 315 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 480 | 4210 / 4010 | 1.1 | 5.5 | 925 x 440 x 915 | 1226 |
| 400 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 570 | 4970 / 4730 | 1.0 | 5.5 | 970 x 465 x 960 | 1468 |
| 500 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 680 | 5940 / 5660 | 1.0 | 5.5 | 1035 x 500 x 1010 | 1758 |
| 630 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 810 | 6820 | 0.9 | 6.0 | 1110 x 525 x 1075 | 2074 |
| 800 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 980 | 8250 | 0.8 | 6.0 | 1190 x 580 x 1155 | 2840 |
| 1000 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 1150 | 11330 | 0.7 | 6.0 | 1205 x 560 x 1195 | 2842 |
| 1250 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 1380 | 13200 | 0.7 | 6.0 | 1185 x 590 x 1205 | 3168 |
| 1600 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 1660 | 15950 | 0.6 | 6.0 | 1225 x 565 x 1345 | 3800 |
| 2000 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 1950 | 19140 | 0.6 | 6.0 | 1310 x 615 x 1435 | 4633 |
| 2500 | 33 / 35 / 38.5 kV / 0.4 kV | Dyn11 / Yyn0 | 2340 | 22220 | 0.5 | 6.0 | 1390 x 660 x 1510 | 5329 |
35kV Series Technical Parameter Table (630-31500 kVA)
| Rated Capacity (kVA) | Voltage Group (HV / LV) | Vector Group | No-Load Loss (W) | Load Loss (W) | No-Load Current (%) | Impedance Voltage (%) | Boundary Dimensions (L x W x H, mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 630 | 33 / 35 / 38.5 kV / 3.15 / 6.3 / 10.5 kV | Yd11 | 830 | 7860 | 0.65 | 6.5 | 2300 x 1100 x 2000 | 2610 |
| 800 | 33 / 35 / 38.5 kV / 3.15 / 6.3 / 10.5 kV | Yd11 | 980 | 9400 | 0.65 | 6.5 | 2390 x 1130 x 2070 | 3310 |
| 1000 | 33 / 35 / 38.5 kV / 3.15 / 6.3 / 10.5 kV | Yd11 | 1150 | 11500 | 0.65 | 6.5 | 2420 x 1200 x 2110 | 3580 |
| 1250 | 33 / 35 / 38.5 kV / 3.15 / 6.3 / 10.5 kV | Yd11 | 1400 | 13900 | 0.55 | 6.5 | 2500 x 1270 x 2130 | 3990 |
| 1600 | 33 / 35 / 38.5 kV / 3.15 / 6.3 / 10.5 kV | Yd11 | 1690 | 16600 | 0.45 | 6.5 | 2510 x 1290 x 2340 | 4740 |
| 2000 | 33 / 35 / 38.5 kV / 3.15 / 6.3 / 10.5 kV | Yd11 | 2170 | 18300 | 0.45 | 6.5 | 2420 x 2070 x 2390 | 5120 |
| 2500 | 33 / 35 / 38.5 kV / 3.15 / 6.3 / 10.5 kV | Yd11 | 2560 | 19600 | 0.45 | 6.5 | 2520 x 2210 x 2470 | 5880 |
| 3150 | 33 / 35 / 38.5 kV / 3.15 / 6.3 / 10.5 kV | Yd11 | 3040 | 23000 | 0.45 | 7.0 | 2630 x 2280 x 2510 | 7770 |
| 4000 | 33 / 35 / 38.5 kV / 3.15 / 6.3 / 10.5 kV | Yd11 | 3610 | 27300 | 0.45 | 7.0 | 2720 x 2430 x 2570 | 8750 |
| 5000 | 33 / 35 / 38.5 kV / 3.15 / 6.3 / 10.5 kV | Yd11 | 4320 | 31300 | 0.45 | 7.0 | 2870 x 2470 x 2750 | 9930 |
| 6300 | 33 / 35 / 38.5 kV / 3.15 / 6.3 / 10.5 kV | Yd11 | 5250 | 35000 | 0.45 | 7.0 | 3100 x 2580 x 2950 | 12760 |
| 8000 | 33 / 35 / 38.5 kV / 3.15 / 3.3 / 6.3 / 6.6 / 10.5 / 11 kV | YNd11 | 7200 | 38400 | 0.35 | 8.0 | 3250 x 2680 x 3150 | 14500 |
| 10000 | 33 / 35 / 38.5 kV / 3.15 / 3.3 / 6.3 / 6.6 / 10.5 / 11 kV | YNd11 | 8700 | 45300 | 0.35 | 8.0 | 3320 x 2720 x 3230 | 16900 |
| 12500 | 33 / 35 / 38.5 kV / 3.15 / 3.3 / 6.3 / 6.6 / 10.5 / 11 kV | YNd11 | 10000 | 53800 | 0.30 | 8.0 | 3410 x 2950 x 3410 | 19980 |
| 16000 | 33 / 35 / 38.5 kV / 3.15 / 3.3 / 6.3 / 6.6 / 10.5 / 11 kV | YNd11 | 12100 | 65800 | 0.30 | 8.0 | 3600 x 3220 x 3630 | 24200 |
| 20000 | 33 / 35 / 38.5 kV / 3.15 / 3.3 / 6.3 / 6.6 / 10.5 / 11 kV | YNd11 | 14400 | 79500 | 0.30 | 8.0 | 3810 x 3640 x 4040 | 31200 |
| 25000 | 33 / 35 / 38.5 kV / 3.15 / 3.3 / 6.3 / 6.6 / 10.5 / 11 kV | YNd11 | 17000 | 94000 | 0.25 | 10.0 | 4180 x 4170 x 4260 | 36100 |
| 31500 | 33 / 35 / 38.5 kV / 3.15 / 3.3 / 6.3 / 6.6 / 10.5 / 11 kV | YNd11 | 20200 | 112000 | 0.25 | 10.0 | 4820 x 4630 x 4440 | 42600 |
FAQ
Of course. This product covers the voltage class commonly used in Asian markets. Its highest voltage class is 40.5 kV, so 33 kV is fully within the supported range. We can absolutely manufacture a 33 kV / 0.433 kV version for your project.
Yes. We can customize the HV/LV voltage combination, vector group, tapping range, impedance voltage, terminal arrangement, protective accessories, and coating specification to match utility, EPC, and industrial project requirements.
It is widely used in commercial distribution, residential communities, rural power networks, heavy industrial facilities, and township substations that require reliable medium-voltage power transformation.
We can provide datasheets, outline drawings, nameplate details, routine test reports, certificate files, and commercial quotations to support engineering evaluation and purchasing.
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