On Load Tap Changer,Series S11

On Load Tap Changer,Series S11
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On load tap changers change the output voltage through the use of regulating switches that change the number of coils by adjusting the coil tap chargers on one side of the transformers. They are especially suitable for users with large grid fluctuations and requirements for a stable voltage, as they achieve both manual and automatic voltage regulation, even when the power is not turned off. The designed voltage range is generally 10±4×2.5kV, with a suitable tapping range designed according to your demands. Fully sealed corrugated oil tanks are used to ensure transformer oil will not come into contact with ambient air or moisture, which ensures there is no oil aging and improves the service life. Elastic deformation of corrugated plates is used to adjust transformer oil volume changes caused by thermal expansion and contraction. A pressure release safety protection device is equipped, allowing extraneous pressure to be released through pressure relief valves for added safety.

Parameters
Model Rated capacity Rated capacity
High voltage
Rated capacity
Low voltage
Connection and vector group No-load losses(W) Load losses(W) No-load current (%) Short circuit impedance (%) Weight(kg)
Oil weight
Weight(kg)
Product weight
Weight(kg)
Overall weight
Dimensions(mm)
L
Dimensions(mm)
W
Dimensions(mm)
H
Gauge
(mm)
S11-M-30/10 30 11
10.5
10
6.3
6
Tapping link range
±5%
or ±2
×2.5%
0.4 Yyn0
Dyn11
95 600 1.3 4 90 200 400 1050 660 1140 400×400
S11-M-50/10 50 130 870 1.1 100 220 460 1070 710 1180
S11-M-63/10 63 150 1040 1 110 250 500 1110 720 1190
S11-M-80/10 80 170 1250 0.9 115 290 550 1120 730 1200
S11-M-100/10 100 200 1500 0.8 120 350 620 1140 740 1220
S11-M-125/10 125 230 1800 0.8 145 390 700 1180 760 1280
S11-M-160/10 160 270 2200 0.7 175 460 830 1210 780 1280 550×550
S11-M-200/10 200 330 2600 0.7 190 520 910 1240 780 1360
S11-M-250/10 250 390 3050 0.6 200 610 1000 1280 800 1380
S11-M-315/10 315 470 3650 0.6 220 730 1190 1330 860 1390
S11-M-400/10 400 560 4300 0.5 260 900 1430 1360 860 1440 660×660
S11-M-500/10 500 670 5100 0.5 280 1000 1600 1439 920 1480
S11-M-630/10 630 800 6200 0.5 4.5 330 1100 1830 1540 1010 1510
S11-M-800/10 800 980 7500 0.4 450 1280 2300 1610 1030 1660 820×820
S11-M-1000/10 1000 1150 10300 0.4 550 1450 2700 1750 1160 1750
S11-M-1250/10 1250 1360 12000 0.3 630 1800 3200 1800 1260 1810
S11-M-1600/10 1600 1640 14500 0.3 800 2100 3700 1930 1300 1890
S11-M-2000/10 2000 1940 18300 0.3 5 1050 2600 4500 2030 1340 2000 920×920
S11-M-2500/10 2500 2290 21200 0.3 1200 3100 5500 2410 1610 2400
S11-M-3150/10 3150 2730 24300 0.3 1400 4100 7200 2750 1810 2600
Features
  • The on load tap changer features wide voltage range (4 x2.5%), firmly structure, good short-circuit resistance, and excellent energy saving effect. It reduces the average no-load loss by 30% and no-load current by 45%.
  • Fully sealed corrugated oil tanks are used to ensure transformer oil will not come into contact with ambient air or moisture, which slows down oil aging and improves the service life. So it is maintenance-free.
  • Elastic deformation of corrugated plates is used to adjust transformer oil volume changes caused by thermal expansion and contraction. A pressure release safety protection device is equipped, allowing extraneous pressure to be released through pressure relief valves for added safety.
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