3 Phase Isolating Transformer, including wall mountable housing – degree of protection IP55DTW 0.1 - 25kVA 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, built in a stable sheet steel wall mountable housing (degree of protection IP55).

Due to innovative vacuum impregnation in polyester varnish, the noise level is extraordinary low. Screw terminals are contact proof according to BGV A3. DIN connectors – sizes depend on wire gauges – are used for wire bushings.

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.

3 Phase Autotransformer IP55

including wall mountabe housing  IEC/EN61558-2-13

Voltage range 200 V … 550 V
Rated frequency 50/60 Hz
Power range 100VA … 25kVA
Setup exit Standard switching matrix Yyn0
(typical star load approx. 10%)
Max. ambient temperature 40°C
UL Insulation System (optional) OBJY2.E181051
Insulation class (IEC85) B 130°C
Fire protection class UL94HB (V-0 possible)
Degree of protection IP00
Protection class I
  • Including wall mountable housing – degree of protection IP55; RAL7035 (standard) pulverbeschichtet
  • Wire bushings according to DIN regulations
  • Screw terminals contact proof according to BGV A3
  • Transformer completely vacuum impregnated
Rated
power
kVA		 Dimensions
approx. mm
Copper
weight
KG
Total
weight
KG
 Size
Type and
Ordering No.
A
B
C
D
E
F
0,10
285
160
325
250
200
9,0
0,60
5,58
 3UI 60/21 DTW0010
0,16 285 160 325 250 200 9,0 0,80 6,55 3UI 60/31 DTW0016
0,25 285 160 325 250 200 9,0 1,30 7,80 3UI 75/26 DTW0025
0,40 285 160 325 250 200 9,0 1,60 9,45 3UI 75/41,5 DTW0040
0,50 385 210 428 350 300 9,0 2,70 14,40 3UI 90/31 DTW0050
0,63 385 210 428 350 300 9,0 3,00 16,10 3UI 90/41,5 DTW0063
0,80 385 210 428 350 300 9,0 3,50 17,60 3UI 90/51,5 DTW0080
1,00 385 210 428 350 300 9,0 5,00 20,80 3UI 114/40 DTW0100
1,25 385 210 428 350 300 9,0 5,50 21,50 3UI 114/40 DTW0125
1,60 385 210 428 350 300 9,0 6,40 23,40 3UI 120/41 DTW0160
2,00 385 210 428 350 300 9,0 7,00 29,20 3UI 120/51 DTW0200
2,50 385 210 428 350 300 9,0 8,20 33,50 3UI 132/46 DTW0250
3,20 485 260 530 450 400 9,0 9,50 41,80 3UI 132/60 DTW0320
4,00 485 260 530 450 400 9,0 12,80 52,00 3UI 150/52 DTW0400
5,00 485 260 530 450 400 9,0 13,50 55,50 3UI 168/58 DTW0500
6,30 485 260 530 450 400 9,0 14,00 57,50 EI 300/300/63 DTW0630
8,00 485 260 530 450 400 9,0 14,00 75,40 EI 300/300/78 DTW0800
10,00 685 260 640 650 500 9,0 14,00 86,00 EI 350/350/73 DTW1000
12,50 685 260 640 650 500 9,0 18,00 97,00 EI 350/350/88 DTW1250
16,00 685 260 640 650 500 9,0 20,00 110,50 EI 400/400/83 DTW1600
20,00 685 410 640 650 500 9,0 31,00 181,50 EI 400/400/93 DTW2000
25,00 685 410 640 650 500 9,0 41,00 191,50 EI400/400/110 DTW2500

 

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

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