Description
The S11 oil immersed distribution transformer uses a silicon-steel core and a sealed oil tank for distribution service in the 6–35 kV range. The published three-phase configurations span 30–6300 kVA and serve utility distribution, industrial facilities and local load centres.
S11 Oil Immersed Distribution Transformer — Key Features
- Oil-immersed construction provides winding insulation and cooling.
- Cold-rolled silicon-steel core construction.
- Sealed tank limits exposure of the insulating oil to ambient air and moisture.
- Corrugated tank walls accommodate changes in oil volume.
- Off-circuit tapping options and connection groups are listed by configuration.
Technical Parameters
The tables below retain the published configuration data. Loss-level columns and single-phase tables describe separate variants and must be matched to the specified model.
6/10 kV three-phase distribution configurations, 30–2500 kVA
| Energy efficiency grade | 1 | 2 | 3 | Impedance % | |||||||
| Loss level code | 14 | 13 | 11 | ||||||||
| Rated capacity (kVA) | Voltage combination & tapping range | Connection-group code | No-load loss W | Load loss W | No-load loss W | Load loss W | No-load loss W | Load loss W | |||
| H.V. (kV) | High voltage tapping range % | L.V. (kV) | |||||||||
| 30 | 6 6.3 10 10.5 11 | ±2×2.5 ± 5 | 0.4 | Dyn11 Yzn11 Yyn0 | 80 | 505/480 | 80 | 630/600 | 100 | 630/600 | 4.0 |
| 50 | 100 | 730/695 | 100 | 910/870 | 130 | 910/870 | |||||
| 63 | 110 | 870/830 | 110 | 1090/1040 | 150 | 1090/1040 | |||||
| 80 | 130 | 1050/1000 | 130 | 1310/1250 | 180 | 1310/1250 | |||||
| 100 | 150 | 1260/1200 | 150 | 1580/1500 | 200 | 1580/1500 | |||||
| 125 | 170 | 1510/1440 | 170 | 1890/1800 | 240 | 1890/1800 | |||||
| 160 | 200 | 1850/1760 | 200 | 2310/2200 | 280 | 2310/2200 | |||||
| 200 | 240 | 2180/2080 | 240 | 2730/2600 | 340 | 2730/2600 | |||||
| 250 | 290 | 2560/2440 | 290 | 3200/3050 | 400 | 3200/3050 | |||||
| 315 | 340 | 3060/2920 | 340 | 3830/3650 | 480 | 3830/3650 | |||||
| 400 | 410 | 3610/3440 | 410 | 4520/4300 | 570 | 4520/4300 | |||||
| 500 | 480 | 4330/4120 | 480 | 5410/5150 | 680 | 5410/5150 | |||||
| 630 | Dyn11 Yyn0 | 570 | 4960 | 570 | 6200 | 810 | 6200 | 4.5 | |||
| 800 | 700 | 6000 | 700 | 7500 | 980 | 7500 | |||||
| 1000 | 830 | 8240 | 830 | 10300 | 1150 | 10300 | |||||
| 1250 | 970 | 9600 | 970 | 12000 | 1360 | 12000 | |||||
| 1600 | 1170 | 11600 | 1170 | 14500 | 1640 | 14500 | |||||
| 2000 | 1550 | 14600 | 1550 | 18300 | 1940 | 18300 | 5.0 | ||||
| 2500 | 1830 | 16900 | 1830 | 21200 | 2290 | 21200 | |||||
6/10 kV three-phase configurations, 630–6300 kVA
| Energy efficiency grade | 1 | 2 | 3 | Impedance % | |||||||
| Loss level code | 14 | 13 | 11 | ||||||||
| Rated capacity (kVA) | Voltage combination & tapping range | Connection-group code | No-load loss W | Load loss W | No-load loss W | Load loss W | No-load loss W | Load loss W | |||
| H.V. (kV) | High voltage tapping range % | L.V. (kV) | |||||||||
| 630 | 6 6.3 10 10.5 | ±2×2.5 ± 5 | 3 3.15 6.3 | Yd11 Dy11 | 656 | 6230 | 656 | 6920 | 820 | 6920 | 5.5 |
| 800 | 800 | 7610 | 800 | 8460 | 1000 | 8460 | |||||
| 1000 | 944 | 8920 | 944 | 9910 | 1180 | 9910 | |||||
| 1250 | 1120 | 10500 | 1120 | 11700 | 1400 | 11700 | |||||
| 1600 | 1340 | 12700 | 1340 | 14100 | 1680 | 14100 | |||||
| 2000 | 1610 | 15200 | 1610 | 16900 | 2010 | 16900 | |||||
| 2500 | 1900 | 17600 | 1900 | 19600 | 2370 | 19600 | |||||
| 3150 | 2240 | 20700 | 2240 | 23000 | 2800 | 23000 | |||||
| 4000 | 10 10.5 | 3.15 6.3 | 2760 | 24600 | 2760 | 27300 | 3450 | 27300 | |||
| 5000 | 3280 | 28200 | 3280 | 31300 | 4100 | 31300 | |||||
| 6300 | 3910 | 31500 | 3910 | 35000 | 4890 | 35000 | |||||
6/10 kV three-phase configurations, 200–2500 kVA
| Energy efficiency grade | 1 | 2 | 3 | Impedance % | |||||||
| Loss level code | 14 | 13 | 11 | ||||||||
| Rated capacity (kVA) | Voltage combination & tapping range | Connection-group code | No-load loss W | Load loss W | No-load loss W | Load loss W | No-load loss W | Load loss W | |||
| H.V. (kV) | High voltage tapping range % | L.V. (kV) | |||||||||
| 200 | 6 6.3 10 10.5 | ±4×2.5 | 0.4 | Dyn11 Yyn0 | 304 | 2610 | 304 | 2900 | 380 | 2900 | 4.0 |
| 250 | 352 | 3080 | 352 | 3420 | 440 | 3420 | |||||
| 315 | 424 | 3690 | 424 | 4100 | 530 | 4100 | |||||
| 400 | 512 | 4460 | 512 | 4950 | 640 | 4950 | |||||
| 500 | 608 | 5300 | 608 | 5890 | 760 | 5890 | |||||
| 630 | 768 | 6530 | 768 | 7260 | 960 | 7260 | 4.5 | ||||
| 800 | 896 | 8000 | 896 | 8890 | 1120 | 8890 | |||||
| 1000 | 1090 | 9360 | 1090 | 10400 | 1360 | 10400 | |||||
| 1250 | 1250 | 11100 | 1250 | 12300 | 1560 | 12300 | |||||
| 1600 | 1540 | 13200 | 1540 | 14700 | 1920 | 14700 | |||||
| 2000 | 1820 | 16700 | 1820 | 18600 | 2270 | 18600 | 5.0 | ||||
| 2500 | 2140 | 19400 | 2140 | 21600 | 2680 | 21600 | |||||
6/10 kV single-phase configurations, 5–160 kVA
| Energy efficiency grade | 1 | 2 | 3 | Impedance % | |||||||
| Loss level code | 14 | 13 | 11 | ||||||||
| Rated capacity (kVA) | Voltage combination & tapping range | Connection-group code | No-load loss W | Load loss W | No-load loss W | Load loss W | No-load loss W | Load loss W | |||
| H.V. (kV) | High voltage tapping range % | L.V. (kV) | |||||||||
| 5 | 6 6.3 10 10.5 11 | ±5 ±2×2.5 | 2x(0.22~0.24) OR 0.22~0.24 | Li0 Li6 | 24 | 117 | 24 | 130 | 30 | 130 | 3.0 |
| 10 | 36 | 212 | 36 | 235 | 45 | 235 | |||||
| 16 | 44 | 297 | 44 | 330 | 55 | 330 | |||||
| 20 | 52 | 346 | 52 | 385 | 65 | 385 | |||||
| 30 | 64 | 504 | 64 | 560 | 80 | 560 | |||||
| 40 | 80 | 630 | 80 | 700 | 100 | 700 | 3.5 | ||||
| 50 | 96 | 769 | 96 | 855 | 120 | 855 | |||||
| 63 | 116 | 918 | 116 | 1020 | 145 | 1020 | |||||
| 80 | 128 | 1230 | 128 | 1260 | 160 | 1260 | |||||
| 100 | 152 | 1340 | 152 | 1480 | 190 | 1480 | |||||
| 125 | 184 | 1580 | 184 | 1760 | 230 | 1760 | |||||
| 160 | 232 | 1920 | 232 | 2130 | 290 | 2130 | |||||
20 kV three-phase configurations, 30–2500 kVA
| Energy efficiency grade | 1 | 2 | 3 | Impedance % | |||||||
| Loss level code | 14 | 13 | 11 | ||||||||
| Rated capacity (kVA) | Voltage combination & tapping range | Connection-group code | No-load loss W | Load loss W | No-load loss W | Load loss W | No-load loss W | Load loss W | |||
| H.V. (kV) | High voltage tapping range % | L.V. (kV) | |||||||||
| 30 | 20 | ± 5 | 0.4 | Dyn11 Yzn11 Yyn0 | 80 | 621/594 | 80 | 690/660 | 100 | 690/660 | 5.5 |
| 50 | 104 | 909/864 | 104 | 1010/960 | 130 | 1010/960 | |||||
| 63 | 120 | 1080/1040 | 120 | 1200/1150 | 150 | 1200/1150 | |||||
| 80 | 144 | 1290/1230 | 144 | 1440/1370 | 180 | 1440/1370 | |||||
| 100 | 160 | 1560/1490 | 160 | 1730/1650 | 200 | 1730/1650 | |||||
| 125 | 192 | 1870/1780 | 192 | 2080/1980 | 240 | 2080/1980 | |||||
| 160 | 232 | 2290/2180 | 232 | 2540/2420 | 290 | 2540/2420 | |||||
| 200 | 272 | 2700/2570 | 272 | 3000/2860 | 340 | 3000/2860 | |||||
| 250 | 320 | 3170/3020 | 320 | 3520/3350 | 400 | 3520/3350 | |||||
| 315 | 384 | 3790/3610 | 384 | 4210/4010 | 480 | 4210/4010 | |||||
| 400 | 456 | 4470/4260 | 456 | 4970/4730 | 570 | 4970/4730 | |||||
| 500 | 544 | 5350/5090 | 544 | 5940/5660 | 680 | 5940/5660 | |||||
| 630 | 648 | 6140 | 648 | 6820 | 810 | 6820 | 6.0 | ||||
| 800 | 784 | 7430 | 784 | 8250 | 980 | 8250 | |||||
| 1000 | 920 | 10200 | 920 | 11300 | 1150 | 11300 | |||||
| 1250 | 1100 | 11900 | 1100 | 13200 | 1380 | 13200 | |||||
| 1600 | 1330 | 14400 | 1330 | 16000 | 1660 | 16000 | |||||
| 2000 | 1560 | 17200 | 1560 | 19100 | 1950 | 19100 | |||||
| 2500 | 1870 | 20000 | 1870 | 22200 | 2340 | 22200 | |||||
20 kV single-phase configurations, 5–160 kVA
| Energy efficiency grade | 1 | 2 | 3 | Impedance % | |||||||
| Loss level code | 14 | 13 | 11 | ||||||||
| Rated capacity (kVA) | Voltage combination & tapping range | Connection-group code | No-load loss W | Load loss W | No-load loss W | Load loss W | No-load loss W | Load loss W | |||
| H.V. (kV) | High voltage tapping range % | L.V. (kV) | |||||||||
| 5 | 20 | ±5 | 2x(0.22~0.24) OR 0.22~0.24 | Li0 | 24 | 122 | 24 | 135 | 30 | 135 | 3.5 |
| 10 | 36 | 221 | 36 | 245 | 45 | 245 | |||||
| 16 | 44 | 311 | 44 | 345 | 55 | 345 | |||||
| 20 | 52 | 364 | 52 | 405 | 65 | 405 | |||||
| 30 | 64 | 526 | 64 | 585 | 80 | 585 | |||||
| 40 | 80 | 662 | 80 | 735 | 100 | 735 | |||||
| 50 | 96 | 810 | 96 | 900 | 120 | 900 | |||||
| 63 | 116 | 963 | 116 | 1070 | 145 | 1070 | |||||
| 80 | 128 | 1190 | 128 | 1330 | 160 | 1330 | |||||
| 100 | 152 | 1400 | 152 | 1560 | 190 | 1560 | |||||
| 125 | 184 | 1660 | 184 | 1840 | 230 | 1840 | |||||
| 160 | 232 | 2010 | 232 | 2240 | 290 | 2240 | |||||
35 kV three-phase configurations, 50–2500 kVA
| Energy efficiency grade | 1 | 2 | 3 | Impedance % | |||||||
| Loss level code | 14 | 13 | 11 | ||||||||
| Rated capacity (kVA) | Voltage combination & tapping range | Connection-group code | No-load loss W | Load loss W | No-load loss W | Load loss W | No-load loss W | Load loss W | |||
| H.V. (kV) | High voltage tapping range % | L.V. (kV) | |||||||||
| 50 | 35 38.5 | ±2×2.5 ±5 | 0.4 | Dyn11 Yyn0 | 128 | 1080/1030 | 128 | 1200/1140 | 160 | 1200/1140 | 6.5 |
| 100 | 184 | 1810/1720 | 184 | 2010/1910 | 230 | 2010/1910 | |||||
| 125 | 216 | 2130/2030 | 216 | 2370/2260 | 270 | 2370/2260 | |||||
| 160 | 224 | 2540/2410 | 224 | 2820/2680 | 280 | 2820/2680 | |||||
| 200 | 272 | 2990/2840 | 272 | 3320/3160 | 340 | 3320/3160 | |||||
| 250 | 320 | 3560/3380 | 320 | 3950/3760 | 400 | 3950/3760 | |||||
| 315 | 384 | 4280/4080 | 384 | 4750/4530 | 480 | 4750/4530 | |||||
| 400 | 464 | 5170/4920 | 464 | 5740/5470 | 580 | 5740/5470 | |||||
| 500 | 544 | 6220/5920 | 544 | 6910/6580 | 680 | 6910/6580 | |||||
| 630 | 664 | 7070 | 664 | 7860 | 830 | 7860 | |||||
| 800 | 784 | 8460 | 784 | 9400 | 980 | 9400 | |||||
| 1000 | 920 | 10400 | 920 | 11500 | 1150 | 11500 | |||||
| 1250 | 1120 | 12500 | 1120 | 13900 | 1400 | 13900 | |||||
| 1600 | 1350 | 14900 | 1350 | 16600 | 1690 | 16600 | |||||
| 2000 | 1590 | 17700 | 1590 | 19700 | 1990 | 19700 | |||||
| 2500 | 1890 | 20900 | 1890 | 23200 | 2360 | 23200 | |||||
Standards
Technical specification reference: IEC 60076-1:2011 (general requirements for power transformers). GB references: GB 1094; GB/T 6451. The applicable requirements and test programme are to be agreed in the project specification.
Applications
- Utility distribution networks.
- Industrial and mining facilities.
- Urban and rural load centres.
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