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Dry Type Transformer

Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and other places.

Feature

  • Security, flame retardant fire prevention, no pollution,can directly mounted in load center.
  • Maintenance free, easy installation, integrated operation cost is low.
  • Moisture-proof performance is good,can be in 100% humidity, after the normal operation of the action can be put into operation gets.
  • Low loss, low partial discharge, low noise, strong heat dissipation, and can run at 150% rated load under forced air cooling.
  • Equipped with perfect temperature protection control system for transformer, provide a reliable guarantee safe operation.
  • High reliability, according to the product to have already been put into operation, the operation reliability of products has reached the International advanced level.
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Description

Product Types

The chart below is an overview of the characteristics for a sampling of large rectifier transformer:

Type 74MVA/110kV 134.05MVA/330kV 70.5MVA/220kV 106.26MVA/220kV 140MVA/220kV 136.2MVA/330kV
Capacity (MVA) 74 134 71 106 140 136
DC Voltage (V) 70 1230 880 1220 1350 1300
DC Current (A) 2×45000 2×46000 2×34000 2×37000 2×44000 2×44000
Number of Pulses 12 12 12 12 12 12

Technical Data of 10kV Epoxy-resin Insulation Dry-type Transformer

Rated 

Capacity

(KVA)

 Voltage Combined Vector-group No-load 

Loss(W)

 75℃ Load 

Loss(W)

 No-load 

Current(%)

 Short-circuit 

Impendance(%)
HV(kV) Tapping 

Ranges

 LV(kV)
30 6 

6.3

6.6

10

10.5

11

 ±5% 

±2×2.5%

 0.4 Dyn11 

Yyn0

 190 710 2.4 4
50 270 1000 2.4
80 370 1380 1.8
100 400 1570 1.8
125 470 1850 1.6
160 540 2130 1.6
200 620 2530 1.4
250 720 2760 1.4
315 880 3470 1.2
400 980 2990 1.2
500 1160 4880 1.2
630 1340 5880 1.0
630 1300 5960 1.0 6
800 1520 6960 1.0
1000 1770 8130 1.0
1250 2090 9690 1.0
1600 2450 11730 1.0
2000 3050 14450 0.8
2500 3600 17170 0.8
1600 2450 12960 1.0 8
2000 3050 15960 0.8
2500 3600 18890 0.8

 

Technical Data of 20kV Epoxy-resin Insulation Dry-type Transformer

Rated Capacity 

(KVA)

 Voltage Combined Vector-group No-load Loss(W) 75℃ Load Loss(W) No-load Current(%) Short-circuit 

Impendance(%)
HV(kV) Tapping 

Ranges

 LV(kV)
50 20 

22

24

 ±5% 

±2×2.5%

 0.4 Dyn11 

Yyn0

 380 1300 2.4 6
100 600 2100 2.2
160 750 2600 1.8
200 820 3100 1.8
250 940 3600 1.6
315 1080 4300 1.6
400 1280 5100 1.4
500 1500 6100 1.4
630 1700 7200 1.2
800 1950 8700 1.2
1000 2300 10300 1.0
1250 2650 12150 1.0
1600 3100 14600 1.0 8
2000 3600 17250 0.8
2500 4300 20400 0.8
2000 3600 18800 0.8
2500 4300 22400 0.8

 

Technical Data of 10kV Epoxy-resin Insulation Dry-type Transformer

Rated 

Capacity

(KVA)

 Voltage Combined Vector-group No-load 

Loss(W)

 Load loss under different insulation 

and heat resistance grades(W)

 No-load 

Current(%)

 Short-circuit 

Impendance(%)
HV(kV) Tapping 

Ranges

 LV(kV) B(100℃) P(120℃) H(145℃)
30 6 

6.3

6.6

10

10.5

11

 ±5% 

±2×2.5%

 0.4 Dyn11 

Yyn0

 135 605 640 685 4.0
50 195 845 900 965
80 265 1160 1240 1330
100 290 1330 1415 1520
125 340 1565 1665 1780
160 385 1800 1915 2050
200 445 2135 2275 2440
250 515 2330 2485 2665
315 635 2945 3125 3355
400 705 3375 3591 3850
500 835 4130 4390 4705
630 965 4975 5290 5660
630 935 5050 5365 5769 6.0
800 1095 5895 6265 6715
1000 1275 6885 7315 7885
1250 1505 8190 8720 9335
1600 1765 9945 10555 11320
2000 2195 12240 13005 14005
2500 2590 14535 15455 16605
1600 1765 11050 11660 12510 8.0
2000 2195 13520 14360 15400
2500 2950 15980 17000 18260

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