DTUSP – THREE-PHASE AUTOTRANSFORMERS



Designed and tested according

· IEC/EN 61558-2-1, -2-13
· UL 5085-1/2
· CSA 22.2 No. 66

Typical applications

· Voltage adjustment

Basic equipment

· Insulation class H (180°)
· Ambient temperature –25 to 40 °C
· Connection terminal (≤380 A)
· Frequency 50/60 Hz
· Vector group YNa0
· maximum neutral loading capacity 10%
· Winding: Copper (aluminium on request)

Other available accessories

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

Sample order

When ordering, the following information must be added to the type designation:

DTU8,0(*/*)*
· 1st place holder ≙ rated input voltage
· 2nd place holder ≙ rated output voltage
· 3rd place holder ≙ vector group

· requested type DTUSP8,0
· requested rated input voltage 400 V
· requested rated output voltage 230 V
· requested vector group Dyn5

The correct type designation reads  DTUSP8,0(400/230)Dyn5

Calculation example:
Sn = Styp / (1-Umin / Umax))
I = S / (U x √3)
e.g.: Styp = 8kVA, U1 = 3 x 400V, U2= 3x 230V
Sn = 8000VA / (1 – 230V / 400V)) = 18823,5VA
I = 18823,5VA / (230V x √3) = 47,3A
-> 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:

  • 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 input voltage 1)
V (selectable)		Type Price Cu-factor 2)
8 100 -750 (600) 100-750 (600) DTUSP8,0(*/*)* Price on request12
10 DTUSP10(*/*)* 15
12,5 DTUSP12,5(*/*)* 20
16 DTUSP16(*/*)* 25
20 DTUSP20(*/*)* 30
25 DTUSP25(*/*)* 35
32 DTUSP32(*/*)* 40
40DTUSP40(*/*)* 45
50 DTUSP50(*/*)* 50
63 DTUSP63(*/*)* 55
80 DTUSP80(*/*)* 60
100 DTUSP100(*/*)* 75
125 DTUSP125(*/*)* 85
160 DTUSP160(*/*)* 125
200 DTUSP200(*/*)* 160
250DTUSP250(*/*)* 180
315DTUSP315(*/*)* 210
400 120 -750 (600) 120 -750 (600) DTUSP400(*/*)* 290
500DTUSP500(*/*)* 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 losses 1) short-circuit voltage efficiency a 3) b1 e1 e2 f g c b 2) c b 2) c b 2) c b 2) c b 2)
kg W W % 0-55A >55-115A >115-150A >150-220A >220-380A
DTUSP8,0 50 59 317 *) 0,95 300 162 224 – 134 10×18 316 180 332 200 340 210 360 230 – –
DTUSP10 55 65 372 *) 0,96 300 173 224 – 145 10×18 316 190 332 210 340 220 360 240 – –
DTUSP12,5 65 73 581 *) 0,95 390 168 350 – 142 10×18 357 200 373 220 381 220 401 250 434 250
DTUSP16 80 85 646 *) 0,95 390 183 350 – 157 10×18 357 215 373 230 381 240 401 260 434 260
DTUSP20 100 111 801 *) 0,95 450 188 350 400 158 13×20 417 220 433 240 441 240 461 270 494 270
DTUSP25 125 134 1175 *) 0,95 540 200 450 500 160 14×20 467 230 483 250 491 260 511 280 544 280
DTUSP32 150 144 1411 *) 0,95 540 220 450 500 180 14×20 467 250 483 270 491 280 511 300 544 300
DTUSP40 175 196 1397 *) 0,96 540 240 450 500 200 14×20 467 270 483 290 491 300 511 320 544 320
DTUSP50 210 245 1471 *) 0,97 540 270 450 500 230 14×20 467 300 483 320 491 330 511 350 544 350
DTUSP63 230 262 2619 *) 0,95 690 240 575 650 240 14×20 – – 553 310 561 320 581 340 614 340
DTUSP80 280 322 2661 *) 0,96 690 270 575 650 230 14×20 – – 553 340 561 350 581 370 614 370
DTUSP100 320 353 3761 *) 0,96 720 240 575 675 200 14×20 – – 703 310 711 320 731 340 764 340
DTUSP125 380 469 3925 *) 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
*) Depending on the voltage ratio

 

DTU 8,0 – 125 / >380 – 950A

type total weight no-load losses short-circuit losses 1) short-circuit voltage efficiency a 3) b1 e1 e2 f g c b 2) c b 2)
kg W W % >380-600A >600-950A
DTU8,0 50 59 317 *) 0,95 300 162 224 – 134 10×18 – – – –
DTU10 55 65 372 *) 0,96 300 173 224 – 145 10×18 – – – –
DTU12,5 65 73 581 *) 0,95 390 168 350 – 142 10×18 – – – –
DTU16 80 85 646 *) 0,95 390 183 350 – 157 10×18 – – – –
DTU20 100 111 801 *) 0,95 450 188 350 400 158 13×20 385 300 – –
DTU25 125 134 1175 *) 0,95 540 200 450 500 160 14×20 425 310 – –
DTU32 150 144 1411 *) 0,95 540 220 450 500 180 14×20 425 330 – –
DTU40 175 196 1397 *) 0,96 540 240 450 500 200 14×20 425 350 – –
DTU50 210 245 1471 *) 0,97 540 270 450 500 230 14×20 425 380 – –
DTU63 230 262 2619 *) 0,95 690 240 575 650 240 14×20 490 370 500 390
DTU80 280 322 2661 *) 0,96 690 270 575 650 230 14×20 490 400 500 420
DTU100 320 353 3761 *) 0,96 720 240 575 675 200 14×20 635 370 645 390
DTU125 380 469 3925 *) 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
*) Depending on the voltage ratio

 

DTU 160 – 500 / 0 – 380A

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

 

 

DTU 160 – 500 / >380 – 1975A

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