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 bore. 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
| Voltage range / Input, Output | 200 V … 550 V | |
| Rated frequency | 50/60 Hz | |
| Power range | 2,0kVA … 5,0kVA | |
| Max. ambient temperature | 40°C | |
| UL-Insulation system (optional) | OBJY2.E181051 |  |
| Insulation class (IEC85) | B 130°C |  |
| Fire protection class | UL94HB (V-0 possible) | |
| Open transformer – degree of protection | IP00 | |
| Protection class (ready) | I | |
- Transformer completely vacuum impregnated
- Standard switching matrix Yyn0 (typical star load approx. 10%)
- Screw terminals contact proof according to BGV A3e
- Ready for horizontal mounting including angle brackets
| Rated power kVA |
Dimensions approx. mm |
Copper weight
KG |
Total weight
KG
|
Size | Type | |||||
|
A
|
B
|
C
|
D
|
E
|
F
|
|||||
|
2,0
|
290 |
120
|
200
|
258
|
160
|
9,0×13,0
|
6,30
|
19,30
|
3UI 120/51 |
DTL0200
|
| 2,5 | 290 | 110 |
220
|
258
|
176 |
9,0×13,0
|
7,50 | 20,50 | 3UI 132/46 | DTL0250 |
| 3,2 | 290 | 125 |
220
|
258
|
176 |
9,0×13,0
|
8,20 | 25,50 | 3UI 132/60 | DTL0320 |
|
4,0
|
330 | 125 |
250
|
298
|
200 |
9,0×13,0
|
12,20 | 31,80 | 3UI 150/52 | DTL0400 |
|
4,5*
|
330 | 150 |
250
|
298
|
200 |
9,0×13,0
|
11,40 |
36,50
|
3UI 150/65 | DTL0450 |
|
5,0*
|
360 | 142 |
280
|
322
|
224 |
9,0×13,0
|
17,00
|
44,00 | 3UI 168,58 | DTL0500 |
Please note
* Version with lifting brackets for transportation.
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
