Dry Type Transformers
Open-Wound Dry-Type Transformer (SG(B) series)
Open ventilated (non-encapsulated) dry-type transformer offering excellent heat dissipation and easy maintenance. 10 kV.
Key parameters
- Rated capacity
- 30–2500 kVA
- Voltage class
- 10 kV
- Insulation system
- DuPont NOMEX (Class H/C)
- Vector group
- Yyno / Dyn11
Overview
The SG(B) uses open, air-ventilated windings that dissipate heat efficiently and allow straightforward inspection. It is a cost-effective dry-type choice for clean, dry indoor environments where encapsulation is not required.
Technical parameters
| Rated capacity (kVA) | No-load loss (W) | Load loss F (120°C, W) | Load loss H (145°C, W) | No-load current (%) | Impedance (%) |
|---|---|---|---|---|---|
| 30 | 180 | 740 | 790 | 2.3 | 4 |
| 50 | 250 | 1060 | 1140 | 2.2 | 4 |
| 80 | 330 | 1470 | 1570 | 1.7 | 4 |
| 100 | 360 | 1690 | 1830 | 1.7 | 4 |
| 125 | 420 | 1980 | 2120 | 1.5 | 4 |
| 160 | 490 | 2320 | 2480 | 1.5 | 4 |
| 200 | 580 | 2690 | 2880 | 1.3 | 4 |
| 250 | 660 | 3070 | 3300 | 1.3 | 4 |
| 315 | 780 | 3690 | 3970 | 1.1 | 4 |
| 400 | 890 | 4350 | 4640 | 1.1 | 4 |
| 500 | 1040 | 5160 | 5530 | 0.9 | 4 |
| 630 | 1200 | 6140 | 6560 | 0.9 | 4 |
| 630 | 1160 | 6330 | 6800 | 0.9 | 6 |
| 800 | 1370 | 7380 | 7900 | 0.9 | 6 |
| 1000 | 1560 | 8730 | 9420 | 0.9 | 6 |
| 1250 | 1810 | 10390 | 11140 | 0.9 | 6 |
| 1600 | 2400 | 12770 | 13650 | 0.9 | 6 |
| 2000 | 2700 | 15300 | 16540 | 0.7 | 6 |
| 2500 | 3150 | 18420 | 19720 | 0.7 | 6 |
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