Product Description

Oil Immersed Transformer - Oil Cooling System Oil immersed transformer, also called oil filled transformer, is a kind of voltage transformation device utilizing oil cooling method to reduce the transformer temperature. Different from the dry type transformer, the body of oil immersed transformer is installed in the welded steel oil tank filled with insulation oil. When oil immersed transformer in operation, the heat of coil and iron core firstly is transformed to the insulation oil and then to the cooling medium. And according to the capacity sizes, it can be divided into immersed natural cooling transformer and immersed forced air cooling transformer. An oil-immersed power transformer with green shell. Oil-immersed power transformer.An oil-immersed power transformer is installed in a power distribution system. Oil-immersed power transformer relies on insulation oil as the cooling medium. S9, S10 series 10 kV three phase off-load tap changer distribution transformer Type Rating (kVA) On-load loss (w) Load loss (w) No-load current (%) UK (%) Dimension (mm) Weight (kg) a b c S9-M-50/11 50 170 870 2.0 4.0 1215 660 1170 430 S9-M-250/11 250 560 3050 1.2 4.0 1190 815 1370 1115 S9-M-400/11 400 800 4300 1.0 4.0 1515 770 1580 1380 S9-M-500/11 500 960 5050 1.0 4.0 1635 840 1610 1600 S9-M-1000/11 1000 1700 10300 0.7 4.5 1960 1095 1960 2860 S9-M-2500/11 2500 3300 23000 0.55 5.5 2230 2305 2445 5660 S10-M-30/10 30 110 600 1.8 4.0 870 645 1025 310 S10-M-50/10 50 140 870 1.7 4.0 1090 650 1080 395 S10-M-80/10 80 200 1250 1.6 4.0 1140 675 1110 490 S10-M-100/10 100 240 1500 1.5 4.0 1185 690 1130 560 S10-M-125/10 125 280 1800 1.4 4.0 1205 710 1180 670 S10-M-160/10 160 340 2200 1.3 4.0 1255 720 1200 780 S10-M-200/10 200 400 2600 1.2 4.0 1295 740 1215 875 S10-M-250/10 250 470 3050 1.1 4.0 1340 755 1260 1115 S10-M-315/10 315 560 3650 1.0 4.0 1400 770 1320 1280 S10-M-400/10 400 680 4300 0.9 4.0 1500 860 1400 1490 S10-M-500/10 500 810 5150 0.9 4.0 1575 895 1430 1740 S10-M-630/10 630 1020 6200 0.8 4.5 1660 930 1545 2110 S10-M-800/10 800 1190 7500 0.7 4.5 1830 1070 1590 2625 S10-M-1000/10 1000 1450 10300 0.6 4.5 1935 1175 1685 2860 S10-M-1250/10 1250 1650 12000 0.6 4.5 1960 1170 1730 3330 S10-M-1600/10 1600 2040 14500 0.5 4.5 2325 1220 2120 3765 S10-M-2000/10 2000 2140 17820 0.5 4.5 2395 1260 2225 4530 S11 series 20 kV three phase off-load tap changer distribution transformer Type No load loss (W) Load loss (W) No-load current (%) UK (%) Dimensions (mm) Weight (kg) a b c d e f S11-M-30/20 100 690/660 2.1 5.5 1100 700 1240 14 400 400 640 S11-M-50/20 130 1010/960 2.0 1130 710 1260 14 400 450 710 S11-M-63/20 150 1200/1150 1.9 1160 740 1270 14 400 450 780 S11-M-80/20 180 1440/1370 1.8 1200 770 1280 14 400 450 860 S11-M-100/20 200 1730/1650 1.6 1220 800 1300 14 400 450 900 S11-M-125/20 240 2080/1980 1.5 1270 840 1330 19 550 450 970 S11-M-160/20 290 2540/2420 1.4 1320 870 1350 19 550 550 1100 S11-M-200/20 340 3000/2860 1.3 1360 900 1380 19 550 550 1240 S11-M-250/20 400 3520/3350 1.2 1430 910 1430 19 550 650 1420 S11-M-315/20 480 4210/4010 1.1 1460 920 1450 19 550 650 1570 S11-M-400/20 570 4970/4730 1.0 1490 940 1470 19 660 750 1740 S11-M-500/20 680 5940/5660 1.0 1570 970 1540 19 660 750 1950 S11-M-630/20 810 6820 0.9 6.0 1650 1000 1580 19 660 850 2290 S11-M-800/20 980 8250 0.8 1750 1070 1650 19 820 850 2690 S11-M-1000/20 1150 11330 0.7 1830 1170 1690 19 820 850 2880 S11-M-1250/20 1380 13200 0.7 1900 1200 1790 19 820 850 3400 S11-M-1600/20 1660 15950 0.6 1950 1250 1850 19 820 900 4100 Voltage ration (kV): 20(10) ± 5%/0.4. Connection: Yyn0, Dyn11. Matters need to attention: Due to the oil immersed transformer is immersed in the oil tank, if the oil spray or leakage, there may result in fire. Thus, oil immersed transformer is generally used in separate room or exterior places. If the climate of the installation region is relatively heat and humidity, the oil immersed transformer is also a good choice. Fire precaution: We should pay specially attention to the fire precaution of the oil filled transformer. The fireproof distance between oil filled transformer with oil over than 2500 kg and oil-filled electric equipment with 600-2500 kg oil should not less than 5 m. When fireproof distance of two adjacent oil filled transformers does not meet requirements, the fireproof wall or fireproof water curtain on top of the fireproof wall should be set. When it comes to single-phase oil filled transformer, it only needs to set fireproof wall or fireproof water curtain. When the distance between outside building wall and oil filled transformer in outside is less than the standard regulations, the outside building wall should adopts the fireproof wall and the distance between wall and voltage transformer should not less than 0.8 m. When the oil filled transformer or other oil-filled electric equipment with oil over than 1000 kg, oil storage pit and oil collection basin should be set, at the same time, the transformer cobblestone should be stored for fireproof or oil offloading. According to the relevant present provisions, oil filled transformer should be equipped with fire extinguishing system. Oil filled transformer used for factory should be set in a separate room. The room door should be the class B fire door and open to the outside or corridor and it should not open to other rooms. You can contact us via sales@electricpowerdistribution.com, if you have any questions about our products.