ZTelec high-performance dry type transformers from 50 kVA to 6300 kVA, up to 36 kV. Eco-friendly, fire-safe, moisture-resistant, and ideal for commercial, industrial, and infrastructure applications. Learn about epoxy cast and prepreg resin
Dry type transformers differ from oil-immersed transformers primarily in their cooling method. The high-voltage windings are vacuum cast with epoxy resin, while the low-voltage windings are manufactured using either cast resin or resin-impregnated prepreg technology, ensuring high reliability in various environmental conditions.
Cooling methods include natural air cooling (AN) and forced air cooling (AF). With fan-assisted cooling, the transformer can achieve up to 40% increased load capacity.
Power range: 50 kVA to 6300 kVA
Voltage level: Up to 35 kV
Environmentally Friendly: Oil-free design eliminates the risk of leakage and environmental pollution.
Fire Safety: Flame-retardant epoxy resin minimizes fire hazards.
Moisture Resistant: Can be put into service immediately even after long periods of inactivity; ideal for humid or dusty environments.
Low Maintenance: Compact and robust structure requires minimal upkeep.
Enhanced Cooling: Optional fan cooling allows over 40% load increase.
Versatile Applications: Widely used in high-rise buildings, commercial centers, rail transit, hospitals, and airports—especially where fire safety and eco-compliance are essential.
GB 1094 : Power Transformer
IEC 60076: Power Transformer
GB/T10228 :Specification and Technical Requirements of Dry type Power Transformers
JB/T10008 :6kV-500kV Power Transformer Sound Level
GB/T7354 : Partial Discharge Measurements
The product is widely used in power transmission and transformation systems,such as hotels,restaurants,airports,high-rise buildings, commercial centers,residential quarters and other important places,as well as subways,smelting power plants and other harsh environments.
| Rated capacity (kVA) | Voltagegroup | Impedance voltage(%) | SC(B)10 | Sound leve (dB) | Dimension(mm) | Weight(kg) | ||||||
| HV(kV) | Tap range | LV(kV) | No-loadloss (W) | Loadloss120℃ (W) | No-load curren (%) | L | W | H | ||||
| 30 | 10 11 10.5 6.6 6.3 6 | ±2×2.5% ±5% | 0.4 | 4 | 190 | 710 | 2.0 | 44 | 620 | 400 | 600 | 220 |
| 50 | 270 | 1000 | 2.0 | 44 | 650 | 400 | 740 | 320 | ||||
| 80 | 370 | 1380 | 1.5 | 45 | 750 | 500 | 770 | 460 | ||||
| 100 | 400 | 1570 | 1.5 | 45 | 800 | 500 | 830 | 580 | ||||
| 125 | 470 | 1850 | 1.3 | 46 | 950 | 880 | 1090 | 750 | ||||
| 160 | 540 | 2130 | 1.3 | 46 | 950 | 880 | 1090 | 780 | ||||
| 200 | 620 | 2530 | 1.1 | 47 | 1050 | 900 | 1200 | 850 | ||||
| 250 | 720 | 2760 | 1.1 | 48 | 1050 | 900 | 1200 | 1030 | ||||
| 315 | 880 | 3470 | 1.0 | 48 | 1080 | 900 | 1250 | 1060 | ||||
| 400 | 980 | 3990 | 1.0 | 49 | 1110 | 950 | 1270 | 1400 | ||||
| 500 | 1160 | 4880 | 1.0 | 49 | 1130 | 950 | 1380 | 1550 | ||||
| 630 | 1340 | 5880 | 0.85 | 49 | 1200 | 950 | 1450 | 1820 | ||||
| 630 | 6 | 1300 | 5960 | 0.85 | 50 | 1320 | 950 | 1375 | 1850 | |||
| 800 | 1520 | 6960 | 0.85 | 51 | 1310 | 1000 | 1315 | 2150 | ||||
| 1000 | 1770 | 8130 | 0.85 | 52 | 1400 | 1070 | 1520 | 2550 | ||||
| 1250 | 2090 | 9690 | 0.85 | 53 | 1440 | 1150 | 1570 | 3020 | ||||
| 1600 | 2450 | 11730 | 0.85 | 54 | 1650 | 1200 | 1795 | 4500 | ||||
| 2000 | 3050 | 14450 | 0.7 | 55 | 1800 | 1260 | 1870 | 5300 | ||||
| 2500 | 3600 | 17170 | 0.7 | 56 | 1950 | 1260 | 2035 | 6200 | ||||
| Rated capacity (kVA) | Voltagegroup | mpedance voltage(%) | SC(B)11 | Sound eve (dB) | Dimension(mm) | Weight(kg) | ||||||
| HV(kV) | Tap range | LV(kV) | No-loadloss (W) | Loadloss120℃ (W) | No-load current (%) | L | W | H | ||||
| 30 | 10 11 10.5 6.6 6.3 6 | ±2×2.5% ±5% | 0.4 | 4 | 170 | 710 | 2.0 | 44 | 620 | 400 | 600 | 220 |
| 50 | 250 | 1000 | 2.0 | 44 | 650 | 400 | 740 | 320 | ||||
| 80 | 330 | 1380 | 1.5 | 45 | 750 | 500 | 770 | 460 | ||||
| 100 | 360 | 1570 | 1.5 | 45 | 800 | 500 | 830 | 580 | ||||
| 125 | 420 | 1850 | 1.3 | 46 | 950 | 880 | 1090 | 750 | ||||
| 160 | 490 | 2130 | 1.3 | 46 | 950 | 880 | 1090 | 780 | ||||
| 200 | 560 | 2530 | 1.1 | 47 | 1050 | 900 | 1200 | 850 | ||||
| 250 | 650 | 2760 | 1.1 | 48 | 1050 | 900 | 1200 | 1030 | ||||
| 315 | 790 | 3470 | 1.0 | 48 | 1080 | 900 | 1250 | 1060 | ||||
| 400 | 880 | 3990 | 1.0 | 49 | 1110 | 950 | 1270 | 1400 | ||||
| 500 | 1040 | 4880 | 1.0 | 49 | 1130 | 950 | 1380 | 1550 | ||||
| 630 | 1210 | 5880 | 0.85 | 49 | 1200 | 950 | 1450 | 1820 | ||||
| 630 | 6 | 1170 | 5960 | 0.85 | 50 | 1320 | 950 | 1375 | 1850 | |||
| 800 | 1370 | 6960 | 0.85 | 51 | 1310 | 1000 | 1315 | 2150 | ||||
| 1000 | 1590 | 8130 | 0.85 | 52 | 1400 | 1070 | 1520 | 2550 | ||||
| 1250 | 1880 | 9690 | 0.85 | 53 | 1440 | 1150 | 1570 | 3020 | ||||
| 1600 | 2210 | 11730 | 0.85 | 54 | 1650 | 1200 | 1795 | 4500 | ||||
| 2000 | 2750 | 14450 | 0.7 | 55 | 1800 | 1260 | 1870 | 5300 | ||||
| 2500 | 3240 | 17170 | 0.7 | 56 | 1950 | 1260 | 2035 | 6200 | ||||
