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Baoding Zhongyi Electrical Material Manufacturing Co., Ltd.

Dry Type Power Transformer

Product Name:SC(B)10 Series Resin-insulated Dry Type Transformer

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Function Characteristics:
●Flame retardant, non-pollution, it can be installed directly in the load center.
●Maintenance-free, easy to be installed, low operating costs.
●The enclosure can be of Good moisture resistance, transformer can be put into operation without pre-drying under 100% humidity in the normal operation.
●Low loss, light weight and small volume, low noise, good dissipation of heat, it can be 150% rated load operation under forced air cooling conditions.
●Equipped with a complete temperature protection control system to provide reliable protection for the safe operation of transformers.
●High reliability. The results of checking for the products that has been put into operation show that the reliability index has reached the international advanced level.

Structural Characteristics:
Foil Coil: Adopting the entire section of copper foil, together with the F-class turn insulation, low voltage winding is wound by the special low-voltage foil winding machine. The foil coil resolves problems such as large short-circuit stress, ampere turn unbalance, poor heat dissipation, existing the winding spiral angle and unsteady manual welding quality due to low voltage and large current coil. At the same time, the end of winding is treated with cast resin, solidification to make shape, moisture-proof and anti-fouling, the lead for copper bar is welded by argon arc welding automatically.
Temperature Control Device: the transformer adopts BWDK series of signal thermometer. The temperature components are embedded in the upper half of the low-voltage coil, can detect and display the temperature of separate phase coil automatically and continuously, also have the functions of over-temperature alarm and trip.

Model and Meaning


Technical Parameter for 6kV, 10kV& 30kVA-2500kVA With Off Circuit Dry Type Transformer

(KVA)Rated capacity Voltage Combination Connection Group Symbol No-load Loss(W)  Load Loss (W) No-load Current (%) Short-circuit Impedance(%)
High Voltage (KV) Tapping ranges of High Voltage Low Voltage(KV) 130℃(B) (100℃) 155℃(F) (120℃) 180℃(H) (145℃)
30 6
6.3
6.6
10
10.5
11
±2.5%
 ±5%
0.4 Dyn11 Yyn0   190 670 710 760 2.0 4.0
50 270 940 1000 1070 2.0
80 370 1290 1380 1480 1.5
100 400 1480 1570 1690 1.5
125 470 1740 1850 1980 1.3
160 540 2000 2130 2280 1.3
200 ±2X2.5%
±5% 
620 2370 2530 2710 1.1
250 720 2590 2760 2960 1.1
315 880 3270 3470 3730 1.0
400 980 3750 3990 4280 1.0
500 1150 4590 4880 5230 1.0
630 1340 5530 5880 6290 0.85
630 1300 5610 5960 6400 0.85 6.0
800 1520 6550 6960 7460 0.85
1000 1770 7650 8130 8760 0.85
1250 2090 9100 9690 10300 0.85
1600 2450 11000 11700 12500 0.85
2000 3050 13600 14400 15500 0.70
2500 3600 16100 17100 18400 0.70
1600 2450 1220 12900 13900 0.85 8.0
2000 3050 15000 15900 17100 0.70
2500 3600 17700 18800 20200 0.70

The load losses listed in the table are the values of the reference temperature for different insulation systems in parentheses; The load losses under other insulation system temperatures that are not included in the table should be according to their respective reference temperatures, the corresponding calculation is based on the"- 155 ℃ (F)" insulation system temperature data.
Notes: The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents. 

Technical Parameter for 20kV & 50kVA-2500kVA With Off Circuit Dry Type Transformer
(KVA)Rated capacity Voltage Combination Connection Group Symbol No-load Loss(W) Load Loss (W) No-load Current (%) Short-circuit Impedance(%)
High Voltage (KV) Tapping ranges of High Voltage Low Voltage(KV) 130℃(B) (100℃) 155℃(F) (120℃) 180℃(H) (145℃)
50 20
22
 24  
±2.5%
±5%
0.4 Dyn11 Yyn0   340 1160 1230 1310 2.0 5.0      
100 540 1870 1990 2130 1.8
160 670 2350 2470 3460 1.8
200 ±2X2.5%
 ±5%
730 2770 2940 3140 1.8
250 840 3220 3420 3660 1.8
315 970 3850 4080 4360 1.8
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 0.70   8.0
2500 3870 18200 19300 20700 0.70
2000 3240 16800 17800 19100 0.70
2500 3870 20000 21200 22700 0.70

 Technical Parameter for 35kV & 50kVA-2500kVA With Off Circuit Dry Type Transformer
(KVA)Rated capacity Voltage Combination Connection Group Symbol No-load Loss(W)  Load Loss (W) No-load Current (%) Short-circuit Impedance(%)
High Voltage (KV) Tapping ranges of High Voltage Low Voltage(KV) 130℃(B) (100℃) 155℃(F) (120℃) 180℃(H) (145℃)
50 35
36
37
38.5
±2.5%
±5%
 
0.4 Dyn11 Yyn0 450 1340 1420 1520 2.3 6.0
100 630 1970 2090 2230 2.0
160 0.790 2650 2810 3000 1.5
200 ±2X2.5%
±5%
0.880 3130 3320 3550 1.5
250 0.990 3580 3800 4060 1.3
315 1170 4250 4510 4820 1.3
400 1370 5100 5410 5790 1.1
500 1520 6270 6650 7110 1.1
630 1860 7250 7690 8230 1.0
800 2160 8600 9120 9760 1.0
1000 2430 9860 10400 11100 0.75
1250 2830 12000 12700 13600 0.75
1600 3240 14600 15400 16500 0.75
2000 3820 17200 18200 19500 0.75
2500 4450 20600 21800 23300 0.75

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