Power transformer ECT22000/IRC

isolationdrythree-phase

ECT22000/IRC Three-phase energy-efficient isolating transformer (BTE) - IP00 - Low Inrush current - Upri 230V ∆ - 400V Y+N // Usec 400V Y+N - Power 22000VA Never fear inrush current again EREA have a number of solutions to allow the construction of a more reliable installation. On the one hand we have inrush current limiters. These are placed ahead of the transformer. They ensure that the impedance of the network is briefly increased during the connection. The magnetisation of the core can then proceed in a gentler fashion. This is possible with transformers with a primary current up to 25A. Three inrush current limiters are provided for three-phase transformers. A second option is a low inrush current transformer. With this type (referred to as a ‘low inductance transformer’) the core is less strongly magnetised. These transformers intrinsically have a lower inrush current and can be protected using a C-type circuit breaker which does not need to be overdimensioned. The disadvantage of these transformers is that more core material and/or copper windings are required to transfer the same capacity. They are therefore larger and more expensive than the standard transformers.