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S11-M Series Three-phase Double-winding 20kv Distribution Transformers With Off-circuit Tap Changer

S11-M Series Three-phase Double-winding 20kv Distribution Transformers With Off-circuit Tap Changer

PRODUCT OVERVIEW

It adopts advanced electromagnetic design software, and meets IEC60076, GB1094, GB/T6451, GB/T25289-2010 standards.

Without such device like conservator, air brealher… So it ensures that the transformer oil is not in contact with air, improving the anti-oxidation capacity of the transformer oil and delaying its aging. The core is made of high quality cold-rolled grain-oriented silicon steel sheet, with laminated structure miter joint, so as to reduce the no-load losses and no-load current. The tank is a corrugated type, the corrugated fins can swell and shrink with the change of transformer oil, so that the prassure can be maintained inside the tank, increase its reliability and anti-corrosion capability The coil of distribution transformer, wound by high intensity enameled wrapped conductors with good Ampere-Turn balance and reasonable insulation struc-ture, has a strong short-circuit withstand capacity. The distribution transformer adopts the-free-untanking structure with sealing material parts made of high quality acrylic rubber, it can effectively prevent against light-aging and heat-aging.

S11-M Series Three-phase Double-winding 20kv Distribution Transformers With Off-circuit Tap Changer

Rated capacity(kVA) Voltage ratio(kV) Connection Symbol Loss(W) No-load current(%) lmpedance(%) Weight(kg) Outline Dimension(mm) Gauge(mm)
H.V L.V No-load Loss Full-load Loss Oil weight Total Weight L W H
30

20

±5%

or

±2

x2.5%

0.4

Yyn0

Dyn11

100 690/660 2.1 5.5 100 360 800 680 950 400x400
50 130 1010/960 2 120 410 850 700 970 400x400
63 150 1200/1150 1.9 140 480 880 710 1000 400x400
80 180 1440/1370 1.8 150 540 900 720 1030 400x400
100 200 1730/1650 1.6 170 615 950 750 1050 400x400
125 240 1730/1650 1.5 180 710 950 900 1070 550x550
160 290 1730/1650 1.4 195 790 100 900 1100 550x550
200 340 3000/2860 1.3 220 910 1050 930 1120 550x550
250 400 3520/3350 1.2 245 1040 1100 950 1150 550x550
315 480 4210/4010 1.1 280 1185 1450 950 1200 550x550
400 570 4970/4730 1 300 1370 1500 1000 1250 660x660
500 680 5940/5660 1 350 1620 1550 1050 1320 660x660
630 810 6820 0.9 6 420 2085 1650 1100 1350 660x660
800 980 8250 0.8 465 2400 1700 1200 1450 820x820
1000 1150 11330 0.7 580 2880 1900 1350 1500 820x820
1250 1380 13200 0.7 640 3300 1950 1380 1550 820x820
1600 1660 15950 0.6 770 4000 2050 1450 1600 820x820

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