Transformers with Scott - connection
Function
The Scott transformer configuration enables conversion from a three-phase supply to a two-phase system, allowing two-phase loads or groups of single-phase loads to be supplied from a standard three-phase network. The system consists of two transformers – a main transformer and a teaser transformer – connected in such a way as to obtain two phases shifted by 90° relative to each other. A key advantage of the Scott configuration is that with a symmetrical two-phase load, the three-phase supply network also remains symmetrically loaded. As a result, the system is stable, energy-efficient and beneficial for both power sources and connected loads.
The Scott transformer configuration enables conversion from a three-phase supply to a two-phase system, allowing two-phase loads or groups of single-phase loads to be supplied from a standard three-phase network. The system consists of two transformers – a main transformer and a teaser transformer – connected in such a way as to obtain two phases shifted by 90° relative to each other. A key advantage of the Scott configuration is that with a symmetrical two-phase load, the three-phase supply network also remains symmetrically loaded. As a result, the system is stable, energy-efficient and beneficial for both power sources and connected loads.
Benefits
- Ability to supply two-phase equipment from a conventional three-phase network
- High conversion efficiency due to balanced operation of both transformers
- Symmetrical loading of both the three-phase and two-phase sides
- Reduction of unbalanced currents
- Improved performance of single-phase and two-phase loads
- Application flexibility – capability to support various load configurations
Applications
- Heavy industry
- Power electronics and drive systems
- Testing and laboratory infrastructure
- Supply of specialized machines and equipment requiring two-phase voltage
Typical application diagram
Custom Design
Manufacturing a transformer with parameters other than those specified in the catalogue is possible upon prior consultation.
Product code
Product for:
Details:
| Design | Transformers with Scotta connection type ET3S2 are produced in accordance to the requirements of standard EN/IEC 61558-1 |
|---|---|
| Insulation class |
F(155oC) - standard |
| Climatic class/ Environmental class |
C1/E0 - land design; C2/E1 - maritime design |
| Ambient temperature | 40oC |
| Protection degree | IP 00 |
| Protection class | I |
| Frequency | 50/60 Hz |
| Primary voltage | up to 1000 V |
| Secondary voltage | up to 1000 V |
| Fastening | by means of angles |
Technical sketch
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| Standard design | |
Dimension table
Technical data of examples of transformers with Scott connection type ET3S2
| Type of transformer | Power [kVA] |
Example data | L [mm] |
B [mm] |
H [mm] |
d [mm] |
e [mm] |
f [mm] |
Weight [kg] |
|---|---|---|---|---|---|---|---|---|---|
| ET3S2 | 12 | 3x400V/2x230V | 690 | 445 | 645 | 490 | 390 | 11 x 15 | 116 |
| ET3S2 | 45 | 3x230V/2x31,5V | 1060 | 60 | 860 | 690 | 710 | 11 x 15 | 365 |
| ET3S2 | 56 | 3x380V/2x40V | 1060 | 760 | 860 | 770 | 710 | 11 x 15 | 469 |
| ET3S2 | 70 | 3x380V ±5%/2x63V | 1300 | 760 | 880 | 900 | 710 | 17 x 25 | 577 |
Note:
Producent zastrzega sobie prawo wprowadzania zmian wynikających z ciągłego rozwoju oferowanych wyrobów.
Możliwe jest wykonanie transformatora w innej wersji i o innej mocy niż podano w tabeli po wcześniejszym uzgodnieniu.
Configuration of the housing determined according to individual customer needs. Please contact our sales department or fill out our inquiry form.
