Single-phase Autotransformers EA1

Autotransformer is a special variation of transformer in which primary and secondary windings are connected and therefore there is no galvanic separation between circuits. Autotransformers are used to connect networks with different voltage levels. They are also used in starting systems and in systems whereever a lack of electrical separation between primary and secondary circuits is allowed. The undoubted advantage of the autotransformer is that compared to the transformer of the same outgoing power they are smaller, lighter and cheaper.

Single-phase Autotransformers EA1 | ELHAND Transformatory

Product for:


Design Single-phase autotransformers EA1 are produced in accordance with requirements of standard: EN/IEC 61558-2-1
Insulation class

B(130oC) - standard up to 5 kVA; F(155oC) - standard above 5 kVA

Climatic class/
Environmental class

C1/E0 - land desing; 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

Standard design Standard design
Standard design


Dimension table

Technical data of single-phase autotransformers type EA1

Type of autotransformer Core power factor/ Outgoing power
Example data L
EA1 0,05/0,8 200V/235V 78 63 69 56 47,5 4,8 x 9 1,1
EA1 0,25/0,5 400V/230-220V 105 112 103 80,5 86 5,8 x 12 4,2
EA1 1/4 380V/500V 150 155 138 122 134 7 x 15 12,6
EA1 2,6/10,5 230/210-190-170-150V 178 155 291 128 126 11 x 15 19,6
EA1 5,2/10,2 500V/380V 240 180 320 200 140 11 x 15 38


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.

Obudowa przenośna IP 23 dla urządzeń jednofazowych

portable IP23

Obudowa leżąca IP 23 dla urządzeń jednofazowych

for horizontal mounting IP23

Obudowa stojąca IP 23 dla urządzeń jednofazowych

for vertical mounting IP23

Obudowa naścienna IP 23 dla urządzeń jednofazowych

wall mounted IP23

Obudowa stojąca IP 44 dla urządzeń jednofazowych

vertical design IP44

Obudowa stojąca IP 54 dla urządzeń jednofazowych

vertical design IP54

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