3 Phase Isolating Transformer; Horizontal mounting versionDTL 0.25 - 2.0kVA according to IEC/DIN EN61558-2-4

overviewtechnical dataPDF data sheet

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: Yyn0 (max. typical star load of phase current: approx. 10%). Switching matrix: Please note the distinction between different voltages (e.g. phase voltage, line voltage).

For further information, don´t hesitate to contact us!

Any user-defined mounting position is possible.

3 phase isolating transformer, horizontal mounting version

according to IEC/EN61558-2-4

Voltage range / Input, Output200 V … 550 V
Rated frequency50/60 Hz
Power range250VA … 2,0kVA
Max. ambient temperature40°C
UL-Insulation systemOBJY2.E181051
Insulation class (IEC85)B 130°C
Fire protection classUL94HB (V-0 possible)
Open transformer – degree of protectionIP00
Protection class (ready)I
  • Transformer completely vacuum impregnated
  • Standard switching matrix Yyn0 (typical star load approx. 10%)
  • Screw terminals contact proof according to VBG4
  • Ready for horizontal mounting including angle brackets
Rated
power
kVA
Dimensions
approx. mm
Copper weight
KG


Total weight
KG
SizeType
A
B*
C
D
E
F
0,25
156
73
140
140
100
5,8×9,0
1,30
3,90
3UI 75/26
DTL0025
0,40156
90
140140100
5,8×9,0
1,60
5,70
3UI 75/41,5DTL0040
0,50206
84
160
184
120
7,0×13,0
2,20
6,60
3UI 90/31DTL0050
0,63
20695160
184
120
7,0×13,0
2,80
8,00
3UI 90/41,5DTL0063
0,80
206
105
160
184
120
7,0×13,0
3,00
9,90
3UI 90/51,5DTL0080
1,00
25495
190
228
152
7,0×13,0
4,60
13,503UI 114/40DTL0100
1,25
254
95
190
228152
7,0×13,0
5,30
14,203UI 114/40DTL0125
1,60
290
100
200
258
160
9,0×13,0
5,70
15,30
3UI 120/41DTL0160

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