Multi-Phase Transformers

Multiphase transformers are used to connect multiphase devices to three-phase network (for example 6-phase or 12-phase rectifiers). These transformers are characterized by complexed construction of secondary windings. There are many possibilities of configurations of secondary windings, which enables to create multiphase circuits. The most common connections are: double-star connection double-delta connection or so called dump windings. Multiphase transformers are mostly used with power electronic converter systems.

Product for:


Design Three-phase transformers are produced in accordance with requirements of relevant transformer standards and EN/IEC 61378-1
Insulation class

F(155oC); H(180°C)

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
Terminals screw terminal blocks, cable lugs or
copper bus bars
Fastening by means of angles


Technical sketch

Standard design Standard design
Standard design


Dimension table

Technical data of three-phase transformers with multiphase windings should be ageed before placing an order

Configuration of the housing determined according to individual customer needs. Please contact our sales department or fill out our inquiry form.

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Quality supported by certificates

ELHAND PQ – Elhand Power Quality Harmonic Simulation Software

ELHAND PQ is charge-free software that allows to find the optimum solution for different configurations and parameters of your circuit without the need for costly measurements, tests and analyses. More >>

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