20-24kV three-phase oil-immersed transformer
Oil-immersed on-load tap-changing transformers utilise on-load automatic voltage regulation functionality to maintain stable output voltage in real time, protect electrical equipment, and reduce line losses. They are suitable for areas with poor voltage stability, such as rural grids, remote mountainous regions, and older urban areas, where high line impedance or significant load fluctuations (e.g., nighttime voltages as high as 250V and daytime voltages below 170V) necessitate dynamic voltage regulation to ensure power supply quality. These transformers are specifically designed to deliver exceptional performance, efficiency, and reliability in various industrial environments.
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Transformer
Oil-immersed on-load tap-changing transformer
Oil-immersed on-load tap-changing transformers utilise on-load automatic voltage regulation functionality to maintain stable output voltage in real time, protect electrical equipment, and reduce line losses. They are suitable for areas with poor voltage stability, such as rural grids, remote mountainous regions, and older urban areas, where high line impedance or significant load fluctuations (e.g., nighttime voltages as high as 250V and daytime voltages below 170V) necessitate dynamic voltage regulation to ensure power supply quality. These transformers are specifically designed to deliver exceptional performance, efficiency, and reliability in various industrial environments.
One of the core advantages of our transformers lies in their outstanding energy efficiency, which helps reduce power losses and operational costs over the long term. With advanced design features and high-quality materials, these transformers can withstand harsh operating conditions while maintaining stable performance.
Oil-immersed on-load tap-changing transformers are widely applicable in high-rise buildings, commercial centres, subways, airports, stations, industrial and mining enterprises, drilling platforms, and oil production platforms. They are particularly suitable for use in fire-prone areas with harsh environmental conditions, such as zones containing flammable and explosive materials. Additionally, they can be used for power supply and lighting in residential areas, commercial streets, industrial and mining enterprises, and rural regions.
Product Parameter
|
Capacity(KVA) |
No-load Loss(W) |
Load Loss |
Impedance Voltage(%) |
No-load Current(%) |
Vector Group | Extend Connection | |
| Dyn11/Yzn11 | Yyno | ||||||
| 30 | 100 | 600 | 630 | 4.0 | 2.1 | Yyn0 OR Dyn11 |
±2*2.5% Or±5% |
| 50 | 130 | 870、 | 910 | 2 | |||
| 63 | 150 | 1090 | 1040 | 1.9 | |||
| 80 | 180 | 1310 | 1250 | 1.8 | |||
| 100 | 200 | 1580 | 1500 | 1.6 | |||
| 125 | 240 | 1890 | 1800 | 1.5 | |||
| 160 | 280 | 2310 | 2200 | 1.4 | |||
| 200 | 340 | 2730 | 2600 | 1.3 | |||
| 250 | 400 | 3200 | 3050 | 1.2 | |||
| 315 | 480 | 3830 | 3650 | 1.1 | |||
| 400 | 570 | 4520 | 4300 | 1.0 | |||
| 500 | 680 | 5410 | 5150 | 1 | |||
| 630 | 810 | 6200 | 4.5 | 0.9 | |||
| 800 | 980 | 7500 | 0.8 | ||||
| 1000 | 1150 | 10300 | 0.7 | ||||
| 1250 | 1360 | 12000 | 0.6 | ||||
| 1600 | 1640 | 14500 | 0.6 | ||||
| 2000 | 1940 | 18300 | 5.0 | ||||
| 2500 | 2290 | 21200 | |||||
| S11 35kv Three-phase Dual-winding No-load Voltage Regulation Transformer spec | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Rated Capacity (KVA) | Voltage Combination | Connection Group Symbol | No-load Loss (W) | Load Loss (W) | No-load Current (%) | Impedance Voltage (%) | L*W*H(mm) | Active parts Weight (kg) * Oil Weight (kg) | Total Weight (kg) | ||
| High Voltage (KV) | Tapping Range of High Voltage | Low Voltage (KV) | |||||||||
| 630 | 35 | ±2×2.5% 士5% | 3.15 6.3 10.5 | Ydl1 | 830 | 7860 | 0.65 | 6.5 | 2400*1700*221 | 2210*900 | 3250 |
| 800 | 980 | 9400 | 0.65 | 2500*1850*239 | 2350*1030 | 3500 | |||||
| 1000 | 1150 | 11500 | 0.65 | 2700*1950*251 | 2490*1180 | 3860 | |||||
| 1250 | 1400 | 13900 | 0.55 | 2900*2050*263 | 2600*1350 | 4350 | |||||
| 1600 | 1690 | 16600 | 0.45 | 3050*2130*275 | 2810*1580 | 4855 | |||||
| 2000 | 2170 | 18300 | 0.45 | 3105*2195*280 | 2800*1800 | 5300 | |||||
| 2500 | 2560 | 19600 | 0.45 | 3150*2535*298 | 3525*2060 | 7665 | |||||
| 3150 | 35-38.5 | ±2×2.5% 土5% | 3.15 6.3 10.5 | 3040 | 23000 | 0.45 | 7 | 3920*2725*284 | 3950*2205 | 8565 | |
| 4000 | 3610 | 27300 | 0.45 | 3310*2915*307 | 4825*2560 | 10115 | |||||
| 5000 | 4320 | 31300 | 0.45 | 3480*3020*314 | 5700*2635 | 11305 | |||||
| 6300 | 5240 | 35000 | 0.45 | 8 | 3590*2905*321 | 7120*3240 | 13510 | ||||
| 8000 | 35-38.5 | ±2×2.5% | 3.15 3.3 6.3 6.6 10.5 | Ynd11 | 7200 | 38400 | 0.35 | 4070*3050*359 | 8875*3840 | 16690 | |
| 10000 | 8700 | 45300 | 0.35 | 4106*2795*365 | 10305*3600 | 17690 | |||||
| 12500 | 1000 | 53800 | 0.3 | 4570*3010*384 | 12830*4310 | 20990 | |||||
| 16000 | 1210 | 65800 | 0.3 | 5235*3295*461 | 16010*6650 | 27660 | |||||
| 20000 | 1440 | 79500 | 0.3 | 5360*3415*466 | 18820*7600 | 32170 | |||||
| 25000 | 1700 | 94000 | 0.25 | 10 | 5830*3810*486 | 22360*9800 | 42600 | ||||
| 31500 | 2020 | 112000 | 0.25 | 6290*4290*526 | 25110*12010 | 49960 | |||||
| S11 35kv No-load Voltage Regulation Transformer Spec | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Rated Capacity (KVA) | Voltage Combination | No-load Loss (W) | Load Loss (W) | Impedance Voltage(%) | No-load Current (%) | L*W*H(mm) | Active parts Weight (kg) Oil Weight (kg) | Total Weight (kg) | ||
| High Voltage (KV) | Tapping Range of High Voltage | Low Voltage (KV) | ||||||||
| 50 | 35 38.5 | ±5% ±2×2.5% | 0.4 | 160 | 1200/1140 | 6.5 | 1.3 | 1195*935*1825 | 300*330 | 860 |
| 100 | 230 | 2010/1910 | 1.1 | 1200*995*1935 | 470*383 | 1130 | ||||
| 125 | 270 | 2370/2260 | 1.1 | 1235*940*1955 | 550*465 | 1335 | ||||
| 160 | 280 | 2820/2680 | 1 | 1285*895*1950 | 580*485 | 1475 | ||||
| 200 | 340 | 3320/3160 | 1 | 1310*1150*1985 | 680*595 | 1755 | ||||
| 250 | 400 | 3950/3760 | 0.95 | 1450*1090*2010 | 860*650 | 2000 | ||||
| 315 | 480 | 4750/4530 | 0.95 | 1930*1065*2320 | 980*765 | 2290 | ||||
| 400 | 580 | 5740/5470 | 0.85 | 1850*1165*2015 | 1170*885 | 2725 | ||||
| 500 | 680 | 6910/6580 | 0.85 | 2045*1205*2415 | 1340*960 | 3090 | ||||
| 630 | 830 | 7860 | 0.65 | 2085*1240*2515 | 1550*895 | 3810 | ||||
| 800 | 980 | 9400 | 0.65 | 2305*1615*2685 | 1990*1030 | 4510 | ||||
| 1000 | 1150 | 11500 | 0.65 | 2545*1540*2590 | 2415*1475 | 5055 | ||||
| 1250 | 1400 | 13900 | 0.6 | 2495*2010*2675 | 2480*1405 | 5290 | ||||
| 1600 | 1690 | 16600 | 0.6 | 2680*2100*2770 | 2600*1490 | 5450 | ||||
| 2000 | 1990 | 19700 | 0.55 | 2790*2180*2860 | 2720*1590 | 5600 | ||||
| 2500 | 2360 | 23200 | 0.55 | 2900*2290*2980 | 2830*1720 | 5760 | ||||
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Zhengzhou KBT Transformer Co., Ltd. is a specialized production enterprise mainly based on power transformers, which integrates product development, production, sales, service and technology consulting.
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