3 Phase Isolating Transformer; Horizontal mounting versionDTL 5.0 - 35kVA 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). 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.

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

Voltage range200 V … 550 V
Rated frequency50/60 Hz
power range (contract works!)5,0kVA … 35,0kVA
Max. ambient power40°C
UL-Insulation system (optional)OBJY2.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%)
  • attachment with assembly brackets for Horizontal mounting version
  • Screw terminals contact proof according to BGV A3
  • 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
6,3
394185
325
358
240
9,0×14,0
12,0
45,0
3UI 300/300/63
DTL0630
8,0394200325358240
9,0×14,0
12,952,03UI 300/300/78DTL0800
10,0452200
375
408280
13,0×20,0
12,062,03UI 350/350/73DTL1000
12,5452215
375
408280
13,0×20,0
14,576,03UI 350/350/88DTL1250
16,0
526215430472320
13,0×20,0
17,992,03UI 400/400/83DTL1600
20,0526215
430
472
320
13,0×20,0
24,0
98,03UI 400/400/83DTL2000
25,052622543047232013,0×20,031,0114,03UI 400/400/93DTL2500
30,052624543547232013,0×20,041,0138,53UI 400/400/110DTL3000
35,052629043547232013,0×20,036,5161,03UI 400/400/140DTL3500

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