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DTFSP - Three-phase autotransformers

Three-phase transformer: DTF / D4TB, D4TF / DTSP / DTFSP

Contact
Tel.: +43 / 2689 / 2744 – 0
E-mail: info@trafomodern.com

Designed and tested according

  • IEC/EN 61558-2-13 / EN 60076-11

Typical applications

  • Voltage adjustment

Basic equipment

  • Ambient temperature –25 to 40 °C
  • Connection terminal (<=115 A)
  • Frequency 50/60 Hz
  • Vector group Yna0
  • Maximum load to neutral point: 10% of nominal current

CAD data

 
  • For versions with increased climate resistance, the transformer is supplied with a specially insulated finish. The finish allows the transformer to be used in areas of high humidity.
  • CUR according to EIS 130 or EIS 155 to OBJY2. or OBJY8.E160829 (Systems, Electrical Insulation - Component bzw. Systems, Electrical Insulation Certified for Canada - Component)

 

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

DTFSP100(*/*)
1st place holder ≙ rated input voltage
2nd place holder ≙ rated output voltage

Sample order

  • required throughput rating 220 kVA
  • required rated input voltage 690 V
  • required output voltage 400 V

Notes for selection
ST = SN x (1 - Lowervoltage / Highervoltage)= 220 kVA (1 - 400V/690 V) = 92,5 kVA
ST = type power = power, which is relevant for the size of the transformers
SN = nominal power = power, which is the relevant figure of the load of the transformers

  • The type rated power is always smaller than the throughtput rating.
  • Versions with delta stabilizing winding on request.

The correct type designation reads DTFSP100(690/400).

The unambiguous article number of your configuration will be defined by trafomodern during the offer- and order process.

  Here is a hidden table in the mobile version. Click here to display it.
Type rating for use according to insulation class 1) Rated input voltage Rated output voltage Type Price per unit Price for currents up to Cu-factor 2) Copper surcharge
B kVA F kVA V (selectable) V (selectable)   Euro A   Euro
12,5 15 50-1000 50-1000 DTFSP12,5(*/*) 1.828,20 63 28 140,39
16 19     DTFSP16(*/*) 2.203,40   30 150,41
20 22,5     DTFSP20(*/*) 2.607,90   48 240,66
25 30     DTFSP25(*/*) 3.156,70   50 250,69
32 37     DTFSP32(*/*) 3.437,00   52 260,72
40 46     DTFSP40*/*) 4.106,00 100 55 275,76
50 57,5     DTFSP50(*/*) 4.764,50   75 376,04
63 73,5     DTFSP63(*/*) 5.486,90   80 401,10
80 89,5     DTFSP80(*/*) 6.235,30   110 551,52
100 111,5     DTFSP100(*/*) 7.383,60 200 100 501,38
125 150     DTFSP125(*/*) 9.092,30 320 115 576,59
160 180     DTFSP160(*/*) 10.529,80   120 601,66
200 225     DTFSP200(*/*) 12.218,50   180 902,48
250 280     DTFSP250(*/*) 14.197,90 630 180 902,48
315 360     DTFSP315(*/*) 15.791,80   195 977,69
400 450     DTFSP400(*/*) 18.734,10   300 1504,14
500 580     DTFSP500(*/*) 22.175,50 800 360 1804,97

1) Rated output when used according to insulation class B, maximum of 130° C; for insulation class F maximum of 155° C
2) The calculation method of the material price surcharge will be explained in Section 2.1 in the general conditions of busines


DTFSP graphic - Three-phase autotransformer

Here is a hidden table in the mobile version. Click here to display it.
Type Total
weight
No-
load
losses
Short-
circuit
losses
Short-
circuit
voltage
Efficiency
factor
a b b1 c c1 e f ø g
  kg W W %                  
DTFSP12,5 80 85 380 *) 0,96 450 204 173 434 360 400 143 13 x 20
DTFSP16 90 110 400 *) 0,97 450 219 187 434 360 400 157 13 x 20
DTFSP20 117 120 410 *) 0,97 450 234 203 434 360 400 173 13 x 20
DTFSP25 140 140 580 *) 0,97 540 - 240 517 - 450 170 14 x 20
DTFSP32 155 180 700 *) 0,97 540 - 267 517 - 450 197 14 x 20
DTFSP40 185 230 700 *) 0,97 540 - 297 517 - 450 227 14 x 20
DTFSP50 245 260 850 *) 0,97 690 - 280 572 - 575 230 14 x 20
DTFSP63 280 320 1260 *) 0,97 690 - 310 572 - 575 260 14 x 20
DTFSP80 330 290 1890 *) 0,97 760 - 260 720 - 575 200 14 x 20
DTFSP100 345 380 2380 *) 0,97 760 - 290 720 - 575 230 14 x 20
DTFSP125 450 460 2600 *) 0,98 760 - 330 720 - 575 270 14 x 20

*) depending on the voltage ratio
all dimensions in mm

DTFSP graphic 2 - Three-phase autotransformer

Here is a hidden table in the mobile version. Click here to display it.
Type Total
weight
No-
load
losses
Short-
circuit
losses
Short-
circuit
voltage
Efficiency
factor
a b b1 c c1 e f ø g
  kg W W %                  
DTFSP160 550 620 3650 *) 0,98 840 500 450 790 750 705 220 18
DTFSP200 620 700 4000 *) 0,98 840 500 450 790 750 705 220 18
DTFSP250 730 820 4700 *) 0,98 840 500 450 790 750 705 270 18
DTFSP315 980 1160 6350 *) 0,98 1020 500 450 970 930 705 260 18
DTFSP400 1100 1160 6400 *) 0,98 1020 500 450 970 930 705 260 18
DTFSP500 1380 1550 5850 *) 0,98 1020 500 450 970 930 705 320 18

*) depending on the voltage ratio
all dimensions in mm
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