Power transformer

drysingle-phasethree-phase

Dry type frequency injection transformer installed in the HVB/HVA source stations in the building, enabling the injection of remote control signals. An injection unit comprises 3 transformers, positioned side-by-side, inside, in a well ventilated room (ambient temperature between - 5°C et + 40°C), free of dust and condensation. • Transformers for interior installation. • Crystal-oriented iron-silicon sheet magnetic circuit • Coils with copper or aluminium conductor strips. • Insulation made of class H metal aramid fibres. • AN cooling mode. • Lifting by the 2 rings located on the top of the device. • Power throughput 40 MVA: MV network voltage of 15 or 20 kV Three-phase short-circuit current at 50 Hz of 12.5 kA • Power throughput 70 MVA: MV network voltage of 15 or 20 kV Three-phase short-circuit current at 50 Hz of 22 kA • Injection frequency 175/188Hz • The size and the design of the connection ranges of these devices permits interchangeability with injection transformers belonging to the previous technical levels without needing to modify the existing installation.