S10 Series 10KV Distribution Transformer
Essential for high-voltage power systems, these transformers use oil-cooled iron cores and windings to ensure efficient insulation, heat dissipation, and durability. Ideal for substations and industries, they provide overload capacity and extended service life with routine maintenance.

Specification Parameter
30KVA~2500KVA Three-phase duplex winding non-excited tap-changing distribution transformer | ||||||||||||||
Voltage Combinationv | LosskW | No-load | ![]() | |||||||||||
Rated | and Taprange | Vector | voltage | LxWH | Gauge verlical | |||||||||
capacity | HV Tap LV | group | current(%) | horizontal (mm) | ||||||||||
KVA] | Rangel% | (kV | symbol | No-load Load | ||||||||||
30 | 011 | 063060 | 20 | 021 008 032 1000×550×1050 1065×550×1135□ 0275 009 043 1050×580×1100 1105×670×1185 0316 010 050 080×600×1150 1135×685×1120□ 037 012 052 1100×635×1150 1100×630×1300 040 0.12 058 1150×675×1095 1150×670×1245 | 400400 | |||||||||
50 | 0.15 | 091087 | 19 | 450400 | ||||||||||
63 | 018 | 109104 | 18 | 450400 | ||||||||||
020 | 131125 | 17 | 450400 | |||||||||||
100 | 023 | 158150 | 155 | 450400 | ||||||||||
125 | Dn11 | 027 | 189180 | 145 | 4.0 | 048 | 015 | 070 | 1170×710×1220 | 1170×710×1570 | 550400 | |||
160 | Yzn1 | 031 | 231220 | 13 | 056 017 083 1230×740×1270 1230×740×1410 065 017 105 1320×760×1290 1320×760×1420 0.75 022 1.12 1330×760×1360 1330×760×1510 | 550/550 | ||||||||
200 | 6 | Yynu | 038 | 273.260 | 12 | 5501550 | ||||||||
250 | 63 | *5 | 046 | 320305 | 1 | 650'550 | ||||||||
315 | 10 | ±2×2.5 | 04 | 054 | 383365 | 10 | 085 | 023 | 1.30 | 1380×780×1380 | 1380×760×1530 | 650550 | ||
400 | 105 | 065 | 4524.30 | 10 | ![]() 120 032 185 1550×890×1500 1550×890×1650 153 044二 231二 1680×960×1580 1680×960×1730 1.71 049 267 1700×960×1650 1700×960×1890 | 750550 | ||||||||
500 | 11 | 078 | 541515 | 10 | 7501660 | |||||||||
630二 | 092二 | 620 | 08 | 7501660 | ||||||||||
800 | 1.12 | 750 | 07 | 850|660 | ||||||||||
![]() | ||||||||||||||
1250 | Yyno | 156 | 1200 | 06 | 4.5 | 257 066 3.57 1840×1140×1770 1840×1140×1970 270 079 395 930×1300×1810 1930×1300×2020 365 090 465 2100×1640×1930 2100×1640×2170 3.72 098 5.76 2120×1750×1970 2120×1750×2190 | 850820 | |||||||
1600 | 188 | 1450 | 06 | 900820 | ||||||||||
2000 | 227 | 1780 | 05 | 900820 | ||||||||||
2500 | 267 | 2070 | 04 | 0701070 | ||||||||||
Note 1:The load loss above the oblique line in the table applies to Dyn11 orYzn11;the load loss below the obligue lineapplies to Yyn0. |
630KVA-6300KVA3-phaseduplex winding non-excited tap-changing power transformer | ||||||||||||
Rated capacity (KVA) | Voltage Combination and Tap range | Vector group Symbol | LosskW | No-load current (%) | Impedance voltage | Weight(T) | Gauge verticalí horizontal(mm) | |||||
HVIkV) | HVTap Rangel%) | LVIKV) | No-oad | Load | Body | Oil | Total | |||||
630 | 6 63 10 105 11 | ±5 ±2×25 | 3 3.15 63 | Yd11 | 082 | 695 | 11 | 55 | 165 | 045 | 261 | 7501660 |
800 | 101 | 846 | 10 | 190 | 052 | 311 | 8501660 | |||||
1000 | 118 | 992 | 10 | 218 | 060 | 366 | 850820 | |||||
1290 | 140 | 1L.80 | 09 | 248 | 070 | 407 | 850820 | |||||
1600 | 169 | 14.11 | 08 | 268 | 078 | 446 | 900820 | |||||
2000 | 202 | 1693 | 08 | 3.10 | 089 | 527 | 900820 | |||||
2500 | 238 | 1967 | 08 | 382 | 096 | 637 | 10701020 | |||||
3150 | 281 | 2309 | 07 | 444 | 118 | 7.80 | 0701070 | |||||
4000 | 10 105 il | 3.1563 | 346 | 2736 | 07 | 530 | 155 | 935 | 1070/1070 | |||
5000 | 410 | 3138 | 07 | 625 | 1.76 | 1108 | 1070/1070 | |||||
6300 | 490 | 3506 | 06 | 7.32 | 195 | 13.15 | 070/1070 | |||||
Note 1:According to requirements,the transformercan supply HVtap change±2×2.5% |
200KVA~2500KVA3-phase duplex winding on-load tap-changing distribution transformer | ||||||||||||
Rated capacity (kVA) | Valtage Combination and Tap range | Vector group Symbol | LosskW) | No-load current (%) | Impedance voltage | Weight (TJ | Gauge verticalí horizontalmm) | |||||
HV(KV) | HV Tap Rangel1%) | LVIKV) | No-load | Load | Body | Oil | Total | |||||
200 | 6 63 10 | ±4×25 | 04 | DnylI Yy0 | 038 | 291 | 15 | 40 | 088 | 026 | 143 | 550/550 |
250 | 045 | 342 | 14 | 097 | 031 | 164 | 650/550 | |||||
315 | 054 | 410 | 14 | 1.12 | 035 | 1.78 | 6501550 | |||||
400 | 064 | 496 | 13 | 128 | 043 | 207 | 7501550 | |||||
500 | 077 | 590 | 12 | 145 | 045 | 230 | 7501660 | |||||
630 | 096 | 727 | 11 | 45 | 1.70 | 053 | 272 | 750|660 | ||||
800 | 1.12 | 889 | 10 | 195 | 0.60 | 3.12 | 850|660 | |||||
1.36 | 1043 | 10 | 2218 | 068 | 351 | 850820 | ||||||
1250 | 156 | 1240 | 09 | 242 | 077 | 400 | 850820 | |||||
1600 | 192 | 1419 | 08 | 287 | 0.88 | 4650 | 900820 | |||||
2000 | 2268 | 186 | 06 | 387 | 099 | 551 | 900820 | |||||
2500 | 252 | 21.74 | 06 | 394 | 1.08 | 675 | 070/1070 | |||||
Note1:According to requirements,the transformercan supply HVwinding voltage 10.5KVand 11KV. Note2:According to requiremens,the transformercan supply LV0.69KV. |
Product Advantage

1. Superior cooling efficiency
Insulating oil provides excellent heat dissipation, allowing higher overload capacity and sustained performance in high-load scenarios (e.g., 1.3× rated capacity for 2 hours). This makes them ideal for industrial and utility-scale applications.2. High voltage tolerance
With robust insulation from dielectric oil, they support voltage levels exceeding 35 kV (up to 110 kV+), suitable for transmission grids and large substations.3. Enhanced thermal stability
Oil circulation prevents hot spots, enabling stable operation in high-ambient temperatures. Sealed designs (e.g., conservator tanks) minimize oxidation and moisture ingress.4. Lower noise levels
Oil dampens core vibrations, reducing operational noise to 50–60 dB(A), quieter than many dry-type alternatives under heavy loads.5. Cost-effectiveness
Lower manufacturing costs and extended service life (20–30 years with maintenance) provide long-term economic benefits, especially for capacities >1,000 kVA.6. Strong short-circuit withstand capability
Mechanically reinforced windings and oil insulation offer high resistance to short-circuit currents, critical for grid stability.7. Adaptability to harsh environments
Suitable for outdoor installations (e.g., substations, pole-mounted units) and extreme climates, including cold regions with specially formulated oil.