3 Phase Isolating Transformer with Module Core; Vertical mounting versionDTM 25 - 630kVA according to IEC/DIN EN61558-2-4

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Typical applications

3 phase isolating transformer according to IEC/EN61558-2-4 for general applications, e.g. for providing electrical (galvanic) isolation according to VDE0700/EN60335 regulations or network supply transformer (e.g. TN network system).

Specifications

3 phase isolating transformer according to EN61558-2-4. protection class I ready. Due to innovative vacuum impregnation in polyester varnish, the noise level is extraordinary low. Screw terminals are contact proof according to VBG4.

Standard switching matrix: Dyn5 (max. typical star load of phase current: 100%). Switching matrix: Please note the distinction between different voltages (e.g. phase voltage, line voltage). Final operation position must allow natural convection through coolant bores. For further information, don’t hesitate to contact us.

Transformer provides 2 loops for safe transportation or craning.

DTM versions providing special specs on request:

  • Short circuit voltage
  • Degree of efficiency
  • Fe- and Cu losses
  • Make current and open-circuit operation

3 phase isolating transformer according to IEC/EN61558-2-4, natural convection through coolant bore, without coil former, winding on glass-fibre reinforced plastic profiles,
usage of module core

Voltage range / Input, Output 200 V … 550 V
Rated Frequency 50/60 Hz
Power range 25,0kVA … 630kVA
Max. ambient temperature 40°C
UL-Insulation system (optional) E181051
Insulation class (IEC85) F 155°C
Fire protection class UL94HB (V-0 möglich)
Open transformer – degree of protection IP00
Protection class (ready) I
  • Transformer completely vacuum impregnated
  • Standard switching matrix Dyn5 (total single load vs. N possible)
  • Screw terminals contact proof according to BGV A3
  • Ready for vertical mounting – including angle brackets

 

 

 

 

 

 

 

 

 

Rated power
kVA
Uk
in %
Fe-
Losses
KW
Cu-
Losses
KW
Dimensions
approx. mm
Copper
weight
KG
Total
weight
KG
Size Type
A
B
C
D
E
F
25 4,8 0,12 0,67 540 290 490 2 x 180 172 11,0 46 126 440/420 – 80/80 DTM0250
31,5 3,9 0,165 0,84 540 320 490 2 x 180 199 11,0 40 145 440/420 – 80/107 DTM0315
40 3,4 0,21 0,99 540 350 495 2 x 180 229 11,0 42 176 440/420 – 80/137 DTM0400
50 3,5 0,235 0,98 540 350 505 2 x 180 229 11,td> 67 202 440/420 – 80/188 DTM0500
63 6,0 0,25 1,50 690 360 555 2 x 230 222 11,0 86 247,0 550/470 – 90/120 DTM0630
80 4,8 0,31 1,70 690 390 565 2 x 230 252 11,0 83 282 550/470 – 90/150 DTM0800
100 4,4 0,39 1,65 690 420 565 2 x 230 282 11,0 108 348 550/470 – 90/180 DTM1000
160 5,0 0,53 2,84 830 390 875 2 x 280 222 15,0 203 496 680/740 – 120/120 DTM1600
200 4,6 0,66 3,00 830 420 840 2 x 280 252 15,0 205 570 680/740 – 120/150 DTM2000
225 3,6 0,79 3,00 830 450 840 2 x 280 282 15,0 213 656 680/740 – 120/180 DTM2250
250 3,0 0,95 3,00 830 480 850 2 x 280 312 15,0 210 725 680/740 – 120/210 DTM2500

3 Phase Isolating Transformers Circuits and Circuit Designs

3 phase isolation transformers offer various possibilities to connect PRIMARY and SECUNDARY winding.

Each design allows specific transformer characteristics. See the following table for preferred circuit designs.

  • Neutral wire “N“ or “n”. Percentage of neutral wire current allways refers to nominal current of phase conductor.
  • Please mind:

    • Secundary star circuit allows load on neutral wire.
    • Parallel connection of transformers must comply to following criteria:
      • Nominal voltage and rated frequency
      • Circuit design
      • Short circuit voltages
      • Ratio of rated loads should not extend 3:1