DTU – THREE-PHASE MATCHING TRANSFORMERS



Designed and tested according

· EN 61558-1, -2-1
· UL 5085-2
· CSA 22.2 No. 66

Typical applications

· Voltage adjustment
· Generation of four-wire networks based on three-wire network
· Power transfer

For use according to

· EN 60204-1

Basic equipment

· Separate windings
· Insulation class H (180°)
· Ambient temperature –25 to 40 °C
· Connection terminal (≤380 A)
· Frequency 50/60 Hz
· Winding: Copper (aluminium on request)

Other available accessories

· Protective enclosure IP23
· Additional tapping
· Additional winding
· Conductive screen winding
· Temperature monitoring

Sample order

· requested type DTU8,0
· requested rated input voltage 400 V
· requested rated output voltage 200 V
· requested vector group Dyn5

The correct type designation reads DTU8,0(400/200)Dyn5

Calculation of current:
I = S / (U x √3)
e.g.: S = 8kVA, U = 3 x 200V
I = 8000 / (230 x √3) = 23,09A
-> Fig. 1/column: >0-55A

The unique part number of your configuration will be defined by trafomodern during the offer- or order process

Technical notes

Notes:

  • Conductive screen winding is an additional shielding between primary and secondary sides
  • Transformer version with reinforced insulation upon request
  • CUR according UL-File XPTQ2.E168819 (Industrial Transformers, General Purpose – Component)
  • CUR according UL-File XPTQ8.E168819 (Industrial Transformers, General Purpose Certified for Canada – Component)

CAD-data

show

Rated power
kVA		Rated input voltage 1)
V (selectable) 		Rated output voltage 1)
V (selectable) 		Type Price Cu-factor 2)
8 100 -750 (600) 100-750 (600) DTU8,0(*/*)* Price on request12
10 DTU10(*/*)* 15
12,5 DTU12,5(*/*)* 20
16 DTU16(*/*)* 25
20 DTU20(*/*)* 30
25 DTU25(*/*)* 35
32 DTU32(*/*)* 40
40DTU40(*/*)* 45
50 DTU50(*/*)* 50
63 DTU63(*/*)* 55
80 DTU80(*/*)* 60
100 DTU100(*/*)* 75
125 DTU125(*/*)* 85
160 DTU160(*/*)* 125
200 DTU200(*/*)* 160
250DTU250(*/*)* 180
315 DTU315(*/*)* 210
400 120 -750 (600) 120 -750 (600) DTU400(*/*)* 290
500DTU500(*/*)* 370

1) EN/CSA bis 750V, UL bis 600V
2) The calculation method of the material price surcharge will be explained in Section 2.1 in the general conditions of business.

 

DTU 8,0 – 125 / 0 – 380A

type total weight no-load losses short-circuit losses1) short-circuit voltage efficiency a3) b1 e1 e2 f g c b2) c b2) c b2) c b2) c b2)
kg W W % 0-55A >55-115A >115-150A >150-220A >220-380A
DTU8,0 50 59 317 4,2 0,95 300 162 224 – 134 10×18 316 180 332 200 340 210 360 230 – –
DTU10 55 65 372 3,9 0,96 300 173 224 – 145 10×18 316 190 332 210 340 220 360 240 – –
DTU12,5 65 73 581 5,2 0,95 390 168 350 – 142 10×18 357 200 373 220 381 220 401 250 434 250
DTU16 80 85 646 4,7 0,95 390 183 350 – 157 10×18 357 215 373 230 381 240 401 260 434 260
DTU20 100 111 801 4,7 0,95 450 188 350 400 158 13×20 417 220 433 240 441 240 461 270 494 270
DTU25 125 134 1175 5,7 0,95 540 200 450 500 160 14×20 467 230 483 250 491 260 511 280 544 280
DTU32 150 144 1411 5,5 0,95 540 220 450 500 180 14×20 467 250 483 270 491 280 511 300 544 300
DTU40 175 196 1397 4,5 0,96 540 240 450 500 200 14×20 467 270 483 290 491 300 511 320 544 320
DTU50 210 245 1471 3,8 0,97 540 270 450 500 230 14×20 467 300 483 320 491 330 511 350 544 350
DTU63 230 262 2619 5,4 0,95 690 240 575 650 240 14×20 – – 553 310 561 320 581 340 614 340
DTU80 280 322 2661 4,4 0,96 690 270 575 650 230 14×20 – – 553 340 561 350 581 370 614 370
DTU100 320 353 3761 4,9 0,96 720 240 575 675 200 14×20 – – 703 310 711 320 731 340 764 340
DTU125 380 469 3925 4,2 0,97 720 270 575 675 230 14×20 – – – – 711 350 731 370 764 370

1) specified short-circuit losses at 145°C
2) dimension of space required for factory wiring
3) for step-lap-transformers: dimensions + 10 mm

 

 

DTU 8,0 – 125 / >380 – 950A

type total weight no-load losses short-circuit losses1) short-circuit voltage efficiency a3) b1 e1 e2 f g c b2) c b2)
kg W W % >380-600A >600-950A
DTU8,0 50 59 317 4,2 0,95 300 162 224 – 134 10×18 – – – –
DTU10 55 65 372 3,9 0,96 300 173 224 – 145 10×18 – – – –
DTU12,5 65 73 581 5,2 0,95 390 168 350 – 142 10×18 – – – –
DTU16 80 85 646 4,7 0,95 390 183 350 – 157 10×18 – – – –
DTU20 100 111 801 4,7 0,95 450 188 350 400 158 13×20 385 300 – –
DTU25 125 134 1175 5,7 0,95 540 200 450 500 160 14×20 425 310 – –
DTU32 150 144 1411 5,5 0,95 540 220 450 500 180 14×20 425 330 – –
DTU40 175 196 1397 4,5 0,96 540 240 450 500 200 14×20 425 350 – –
DTU50 210 245 1471 3,8 0,97 540 270 450 500 230 14×20 425 380 – –
DTU63 230 262 2619 5,4 0,95 690 240 575 650 240 14×20 490 370 500 390
DTU80 280 322 2661 4,4 0,96 690 270 575 650 230 14×20 490 400 500 420
DTU100 320 353 3761 4,9 0,96 720 240 575 675 200 14×20 635 370 645 390
DTU125 380 469 3925 4,2 0,97 720 270 575 675 230 14×20 635 400 645 410

1) specified short-circuit losses at 145°C
2) dimension of space required for factory wiring
3) for step-lap-transformers: dimensions + 10 mm

 

DTU 160 – 500 / 150 – 380A

type total weight no-load losses short-circuit losses1) short-circuit voltage efficiency a3) b1 e1 f g c b2) c b2)
kg W W % >150-220A >220-380A
DTU160 480 507 4220 4,1 0,97 780 500 575 450 18 721 450 754 450
DTU200 570 577 4684 4,1 0,97 780 500 575 450 18 721 490 754 490
DTU250 680 698 6775 4,5 0,97 900 500 705 450 18 – – 874 460
DTU315 810 857 7622 4,1 0,97 900 500 705 450 18 – – 874 510
DTU400 1040 1061 8230 4,2 0,98 1050 500 705 450 18 – – – –
DTU500 1240 1260 8284 3,8 0,98 1050 500 705 450 18 – – – –

 1) specified short-circuit losses at 145°C
2) dimension of space required for factory wiring
3) for step-lap-transformers: dimensions + 10 mm

 

 

DTU 160 – 500 / >380 – 1975A

type total weight no-load losses short-circuit losses1) short-circuit voltage efficiency a3) b1 e1 f g c b2) c b2) c b2) c b2) c b2)
kg W W % >380-600A >600-950A >950-1305A >1305-1645A >1645-1975A
DTU160 480 507 4220 4,1 0,97 780 500 575 450 18 635 500 645 510 665 510 – – – –
DTU200 570 577 4684 4,1 0,97 780 500 575 450 18 635 530 645 550 665 550 – – – –
DTU250 680 698 6775 4,5 0,97 900 500 705 450 18 745 500 755 510 775 510 795 510 – –
DTU315 810 857 7622 4,1 0,97 900 500 705 450 18 745 530 755 560 775 560 795 560 – –
DTU400 1040 1061 8230 4,2 0,98 1050 500 705 450 18 910 500 920 510 940 510 960 510 960 510
DTU500 1240 1260 8284 3,8 0,98 1050 500 705 450 18 910 540 920 560 940 560 960 560 960 560

1) specified short-circuit losses at 145°C
2) dimension of space required for factory wiring
3) for step-lap-transformers: dimensions + 10 mm