Connecting a transformer to the electricity network isn't always straightforward. This is because the transformer very briefly requires a current exceeding the nominal current. If the safety device does not have sufficient capacity you will be unable to connect the transformer and the circuit breaker will trip.
Inrush current limiters
This is the first solution offered by EREA to allow easy connection of transformers. These inrush current limiters are an additional module for currents up to and including 25A and are placed in series with the transformer.
The inrush current limiter ensures that the voltage approaches its full value gradually. This limits the inrush current, thus allowing the safety devices to be dimensioned to match the nominal current.
Find details of EREA's inrush current limiters here . Avoid the need for heavier safety devices or an uprating of your network.
Low inrush current transformer
This second solution is intended for currents exceeding 25A. EREA can construct transformers with a low inrush current. In concrete terms this means that they operate on low induction and are able to connect with type-D fuses on the basis of the nominal current.
This solution is ideal in an industrial environment, and it is also useful, for example, when connecting a heat pump or with charging stations for e-vehicles .
Want to know more about low inrush current transformers?
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