S13/S20/S22-MRL
Wound-core oil-immersed transformer MRL
Instead of the usual flat stacked design, this transformer has a three-dimensional wound core. It reduces magnetic reluctance and eddy currents, and with them no-load and load losses. According to the manufacturer, efficiency reaches 98 % and above; the transformer is more compact and lighter, easier to transport and install.
Main dataper the factory catalogue
- Series
- S13/S20/S22-MRL
- Voltage
- 6; 6.3; 10; 10.5; 11 / 0.4 kV
- Vector group
- Dyn11 / Yyn0
- Impedance voltage
- 4,0–5,0 %
- Energy efficiency class
- S13 — 3, S20 — 2, S22 — 1 (GB 20052-2024)
- Rating
- 30–2 500 kVA
- Versions
- 19
- Tests
- factory acceptance tests
Choose rating, kVA
Price on requestDepends on winding material and loss requirements. Quoted delivered to site.Request a price
Design
- Three-dimensional wound core
- Sealed corrugated tank, no conservator
- Versions S13, S20 and S22 by energy efficiency class
- High voltage 6; 6.3; 10; 10.5 or 11 kV
Specifications
| Rating, kVA | No-load losses S13, W | No-load losses S20, W | No-load losses S22, W | Load losses S13, W | Load losses S20, W | Load losses S22, W | Uk, % | |
|---|---|---|---|---|---|---|---|---|
| 30 | 80 | 70 | 65 | 630 / 600 | 505 / 480 | 455 / 430 | 4,0 | request |
| 50 | 100 | 90 | 80 | 910 / 870 | 730 / 695 | 655 / 625 | 4,0 | request |
| 63 | 110 | 100 | 90 | 1 090 / 1 040 | 870 / 830 | 785 / 745 | 4,0 | request |
| 80 | 130 | 115 | 105 | 1 310 / 1 250 | 1 050 / 1 000 | 945 / 900 | 4,0 | request |
| 100 | 150 | 135 | 120 | 1 580 / 1 500 | 1 265 / 1 200 | 1 140 / 1 080 | 4,0 | request |
| 125 | 170 | 150 | 135 | 1 890 / 1 800 | 1 510 / 1 440 | 1 360 / 1 295 | 4,0 | request |
| 160 | 200 | 180 | 160 | 2 310 / 2 200 | 1 850 / 1 760 | 1 665 / 1 585 | 4,0 | request |
| 200 | 240 | 215 | 190 | 2 730 / 2 600 | 2 185 / 2 080 | 1 970 / 1 870 | 4,0 | request |
| 250 | 290 | 260 | 230 | 3 200 / 3 050 | 2 560 / 2 440 | 2 300 / 2 195 | 4,0 | request |
| 315 | 340 | 305 | 270 | 3 830 / 3 650 | 3 065 / 2 920 | 2 760 / 2 630 | 4,0 | request |
| 400 | 410 | 370 | 330 | 4 520 / 4 300 | 3 615 / 3 440 | 3 250 / 3 095 | 4,0 | request |
| 500 | 480 | 430 | 385 | 5 410 / 5 150 | 4 330 / 4 120 | 3 900 / 3 710 | 4,0 | request |
| 630 | 570 | 510 | 460 | 6 200 | 4 960 | 4 460 | 4,5 | request |
| 800 | 700 | 630 | 560 | 7 500 | 6 000 | 5 400 | 4,5 | request |
| 1 000 | 830 | 745 | 665 | 10 300 | 8 240 | 7 415 | 4,5 | request |
| 1 250 | 970 | 870 | 780 | 12 000 | 9 600 | 8 640 | 4,5 | request |
| 1 600 | 1 170 | 1 050 | 940 | 14 500 | 11 600 | 10 440 | 4,5 | request |
| 2 000 | 1 360 | 1 225 | 1 085 | 18 300 | 14 640 | 13 180 | 5,0 | request |
| 2 500 | 1 600 | 1 440 | 1 280 | 21 200 | 16 960 | 15 270 | 5,0 | request |
Data from the partner factory's catalogue. Where load losses are given as two figures, the first is for Dyn11, the second for Yyn0.
Comparison of 10 kV oil-immersed transformers, 1000 kVA example
No-load losses run around the clock while the transformer is energised, regardless of load. So over a year, a difference in them adds up to thousands of kilowatt-hours.
| Series | No-load losses, W | Load losses, W | Annual no-load losses, kWh |
|---|---|---|---|
| S13 | 830 | 10 300 | 7 271 |
| S20 | 745 | 8 240 | 6 526 |
| S22 | 665 | 7 415 | 5 825 |
| SH15 (amorphous) | 450 | 10 300 | 3 942 |
| SH21 (amorphous) | 450 | 8 800 | 3 942 |
| SH25 (amorphous) | 360 | 8 340 | 3 154 |
Data from the partner factory's catalogue. Annual no-load losses = no-load losses × 8760 h.