THREE-PHASE TRANSFORMERS

THREE-PHASE TRANSFORMERS – OVERVIEW OF THE PRODUCT RANGE

The input voltages and output voltages are freely selectable, with or without tap(s) or additional separate windings, the transformer design can be chosen to be loss-optimized or cost-optimized and the transformer power rating can be adapted. The standard frequency is 50/60 Hz, but other frequencies are also available. As an option, we also offer suitable enclosures in protection class IP 23 – IP 65 in RAL 7035, other colors are available on request. The enclosures can be mounted on castors or runners for forklift transport and can be fitted with crane eyes.

Below you will find an overview of our production range of three-phase transformers, all series in accordance with DIN VDE 0570. Our BDF series is the cost-effective variant up to 40 kVA on standardized DIN transformer plates. We use the loss-optimized BDVA variant up to a power rating of 630 kVA. Voltage combinations are freely selectable. We also have versatile BDUT universal transformers, which can be used worldwide thanks to their numerous voltage combinations, as well as BNLB neutral conductor formers. Higher outputs up to 1 MW on request.

In addition to EN 61558 – previously DIN VDE 0570 – we can also produce transformers with UL approvals.

Switching group:

The Dny5 switching group with a fully loadable star point (N) and protection class I is set as standard; other switching groups and protection classes are of course possible.

Insulation material classes:

Up to an output of 3500 VA, the three-phase transformers are manufactured in insulation class B, from 4000 VA in insulation class F. In our BDH series, we offer insulation class H.

Connections:

The input voltage and output voltage are connected via terminals, from currents above 340 A to cable lugs or copper plates.

Accessories:

On customer request, we complement our transformers with built-in measuring devices, motor protection switches, transformer protection switches, inrush current limiters and other accessories. We will be happy to advise you in detail to find a tailor-made solution for your application.

DC voltage supply:
We can also equip our three-phase transformers with rectifiers and heat sinks – see the BDNT series – to provide a DC power supply.

Special features of the three-phase transformers from Breimer-Roth GmbH

With our three-phase (three-phase current) transformers, the customer always has the choice between a cost-optimized variant in terms of purchasing or a loss-optimized variant for cost-effective operation of the transformer. We can provide you with decision-making aids for choosing the right series based on amortization calculations and CO2 savings.

Areas of application for three-phase transformers

Three-phase transformers are the basis of the power supply and are used for the electrical distribution and transmission of current and voltage and are used in every industrial plant worldwide.

Differences to single-phase transformers

The difference to single-phase transformers lies in the reduced design. If the connections of the primary windings and the secondary windings of three single-phase transformers are permanently connected, these transformers can be used in the three-phase network. The advantage of a three-phase transformer is the reduced size and the associated cost benefits in purchasing as well as the reduced power loss during operation.