Product Overview
Resin-insulated dry-type transformers feature high safety, flame retardancy and zero pollution, and can be installed directly at load centers. They are maintenance-free and easy to install, with low overall operating cost and power loss. Thanks to excellent moisture resistance, the transformers operate reliably at 100% relative humidity, and can be restarted without pre-drying after shutdown.With low partial discharge, low noise and outstanding heat dissipation, they can run at 150% rated load under forced air cooling. A complete temperature protection & control system is equipped to ensure secure operation, delivering high operational reliability.
Model and Meaning
Product Features
- Low loss, energy-saving with low operating cost
- Flame-retardant, fire & explosion proof, eco-friendly
- Excellent moisture resistance and heat dissipation
- Low partial discharge, low noise, maintenance-free
- High mechanical strength, strong short-circuit resistance, long service life
Technical Parameters
SC(ZB)10 Series 20kV Class Off-Circuit Tap-Changing DistributionDry-type Transformers
| Rated Capacity (kVA) | Voltage Combinationed Tap Range | Vector Group Symbol | No-load Loss (W) | Load Loss(W) | No-load Current % | Impedance Voltage % | ||||
| HV(kV) | HV Tap Range % | LV(kV) | 130℃(B)100℃ | 155℃(F)120℃ | 180℃(H)145℃ | |||||
| 50 | 20 22 24 |
±2×2.5 ±5 |
0.4 | Dyn11 Yyn0 |
340 | 1160 | 1230 | 1310 | 2.0 | 6.0 |
| 100 | 540 | 1870 | 1990 | 2130 | 1.8 | |||||
| 160 | 670 | 2330 | 2470 | 2640 | 1.5 | |||||
| 200 | 730 | 2770 | 2940 | 3140 | 1.5 | |||||
| 250 | 840 | 3220 | 3420 | 3660 | 1.3 | |||||
| 315 | 910 | 3850 | 4080 | 4360 | 1.3 | |||||
| 400 | 1150 | 4650 | 4840 | 5180 | 1.1 | |||||
| 500 | 1350 | 5460 | 5790 | 6190 | 1.1 | |||||
| 630 | 1530 | 6450 | 6840 | 7320 | 1.0 | |||||
| 800 | 1750 | 7790 | 8260 | 8840 | 1.0 | |||||
| 1000 | 2070 | 9220 | 9780 | 10400 | 0.85 | |||||
| 1250 | 2380 | 10800 | 11500 | 12300 | 0.85 | |||||
| 1600 | 2790 | 13000 | 13800 | 14800 | 0.85 | |||||
| 2000 | 3240 | 15400 | 16300 | 17500 | 0.7 | |||||
| 2500 | 3870 | 18200 | 19300 | 20700 | 0.7 | |||||
| 2000 | 3240 | 16800 | 17800 | 19100 | 0.7 | 8.0 | ||||
| 2500 | 3870 | 20000 | 21200 | 22700 | 0.7 | |||||
SC(ZB)12 Series 20kV Class Off-Circuit Tap-Changing Distribution Dry-ftype Transformers
| Rated Capacity (kVA) | Voltage Combinationed Tap Range | Vector Group Symbol | No-load Loss (W) | Load Loss(W) | No-load Current % | Impedance Voltage % | ||||
| HV(kV) | HV Tap Range % | LV(kV) | 130℃(B)100℃ | 155℃(F)120℃ | 180℃(H)145℃ | |||||
| 50 | 20 22 24 |
±2×2.5 ±5 |
0.4 | Dyn11 Yyn0 |
340 | 1160 | 1230 | 1310 | 2.0 | 6.0 |
| 100 | 540 | 1870 | 1990 | 2130 | 1.8 | |||||
| 160 | 670 | 2330 | 2470 | 2640 | 1.5 | |||||
| 200 | 730 | 2770 | 2940 | 3140 | 1.5 | |||||
| 250 | 840 | 3220 | 3420 | 3660 | 1.3 | |||||
| 315 | 910 | 3850 | 4080 | 4360 | 1.3 | |||||
| 400 | 1150 | 4650 | 4840 | 5180 | 1.1 | |||||
| 500 | 1350 | 5460 | 5790 | 6190 | 1.1 | |||||
| 630 | 1530 | 6450 | 6840 | 7320 | 1.0 | |||||
| 800 | 1750 | 7790 | 8260 | 8840 | 1.0 | |||||
| 1000 | 2070 | 9220 | 9780 | 10400 | 0.85 | |||||
| 1250 | 2380 | 10800 | 11500 | 12300 | 0.85 | |||||
| 1600 | 2790 | 13000 | 13800 | 14800 | 0.85 | |||||
| 2000 | 3240 | 15400 | 16300 | 17500 | 0.7 | |||||
| 2500 | 3870 | 18200 | 19300 | 20700 | 0.7 | |||||
| 2000 | 3240 | 16800 | 17800 | 19100 | 0.7 | 8.0 | ||||
| 2500 | 3870 | 20000 | 21200 | 22700 | 0.7 | |||||
Notes: ① The load losses listed in the table are measured values of different insulation systems at the reference temperatures specified in parentheses (stipulated by GB/T 1094.1-1). For load losses under other insulation systems not covered in this table, conversion shall be performed based on respective reference temperatures by taking the data of the 155℃ (Class F) insulation system as the benchmark.
② This table applies to transformers with interchangeable dual voltage ratings of 20 kV and 10 kV.
