EREA carries a wide range of standard transformers for the most common three-phase electrical circuits (3 x 230V Delta, 3 x 400V Y+N and 3 x 400V Delta).
We can build transformers to the customer's requirements for all other applications. We build three-phase transformers with capacities up to several hundred KVA, with voltages up to 3 x 1000V. We will always be happy to draw up a quotation for custom work. Contact us at any time to discuss this via this link. Look here for a list of the information we will require from you in order to draw up a quotation for custom work
Our standard transformers are placed in a number of different series:
SPT series: 3-phase isolating transformers – standard range
We've developed our SPT series for industrial applications where the electrical circuits are sufficiently powerful to deliver the current the transformer requires to start up. Our ECT and PVT series are generally more suitable for residential and tertiary electrical systems. You can read more here about transformers and inrush currents.
The SPT series has been developed to deliver optimal Total Cost-of-Ownership (TCO) with low to medium consumption profiles. For higher consumption profiles (up to 24/7) we have developed the BTE range.
Main characteristics:
° Available from 1 kVA to 100 kVA
° Primary voltage:
3x 230V or 3 x 400V Y+N (standard SPT version)
3x 400 V Delta (standard SPTxxx/D version)
° Secondary voltage:
3x 230 V or 3x400 V (N available if required)
Need a solution for larger capacity systems, different voltages or some other variation. Contact us now!
Applications:
° To convert from a 3x230V circuit to 3x400V (or vice versa)
° To convert to a different earthing system (IT, TN, TT)
° To create a zero point at earth potential
° etc.
SPT/BTE series: 3-phase isolating transformers – Energy-efficient
The SPT/BTE series has been developed for industrial applications where the electrical circuits are sufficiently powerful to supply the current the transformer requires to start up. Our ECT and PVT series are generally more suitable for residential and tertiary electrical systems.
With its high energy efficiency the SPT series is suitable for medium to high consumption profiles. Like to know more? Click here!
Main characteristics:
° Available from 1 kVA to 31.5 kVA
° Primary voltage:
3 x 230V or 3 x 400V Y+N. (standard SPTxxx/BTE version)
3x 400 V Delta (SPTxxx/BTE/D version)
° Secondary voltage:
3x 230 V or 3x400 V (N available if required)
Contact us at any time to discuss larger capacities, different voltages, etc.
Applications:
° Applications for the SPT/BTE series are the same as those for the SPT series.
ATT series: 3-phase autotransformers
Autotransformers are a more compact and cheaper alternative to isolating transformers as part of the primary and secondary winding is shared .
The downside is that they are less flexible and can only be used in applications where the circuit is symmetrically charged.
Applications:
° Conversion of the mains supply for use with symmetrical 3-phase loads (motors, compressors, etc.)
An auto-transformer cannot be used to create a neutral conductor (N) if the supplying grid does not have this! For this purpose, an isolation transformer is required.
ECT series: 3-phase isolating transformers – Low inrush current - intended for electric vehicle charging stations
Transformers in the ECT series have been developed for use in domestic and tertiary electrical installations, which often lack the capacity to connect an industrial (SPT) transformer.
Main characteristics:
° Available from 7.4 kVA to 22 kVA
° Primary voltage: 3 x 230V Delta or 3 x 400V Y+N
° Secondary voltage: 3 x 400V (N available if required)
° Low inrush current: Primary fuse Type C on the nominal current
° High efficiency
° Provided with compensating windings
Need larger capacities, different voltages, etc? Send us your questions!
Applications:
° Our ECT transformers are, in the first instance, intended to connect charging stations to a 3 x 230V electricity grid, or to a grid without a clean neutral conductor.
° They can, however, be used in other applications, where their high efficiency and low inrush current can be advantageous.
PVT series: 3-phase isolating transformers – Low inrush current - For PV systems
The PVT series has been developed to connect convertors for solar panels (3 x 400V) to a 3 x 230V electricity grid.
Main characteristics:
° Available from 6 kVA to 63 kVA
° Primary voltage: 3 x 230V Delta or 3 x 400V Y+N
° Secondary voltage: 3 x 400V (N available if required)
° Low inrush current: Primary fuse Type C on the nominal current
° High efficiency
° Uncompensated, for optimal efficiency of the convertor (more info)
Need larger capacities, different voltages, etc? Contact us to discuss your requirements.
Applications:
° Our PVT transformers are, in the first instance, intended to connect photovoltaic convertors to a 3 x 230V electricity grid, or to a grid without a clean neutral conductor.
° They can, however, be used in other applications, where their high efficiency and low inrush current can be advantageous.
