Oil filled and dry type reactors
EBG Srl is specialised in producing class F or H VPI, cast resin and oil filled reactors for indoor and outdoor applications up to 5000 A/52 kV. For outdoor application, EBG can supply cast resin reactors even without the protection box, thanks to the use of resin and special UV-resistant coatings.
CURRENT LIMITING / SHORT CIRCUIT REACTORS
The current limiting reactors are used to limit the line current. They are normally used to ensure that the current does not exceed the values allowed by the protections in the event of a failure. They are connected in series with the line. They are single-phase coreless coils which can be connected one above the other, or supplied individually and connected on site. If they are produced in oil for medium and high voltage, they are shielded.
They have a three-phase core with zig-zag winding. This type of reactor is used to create a false neutral directly connected to ground or through a resistor. The neutral formers are shunt connected to the line.
These are single-phase or three-phase reactors used to reduce the harmonic content in the grid or inside plants with high voltage distortions. They are connected in series or in parallel to the capacitors on both MV and LV side.
The shunt reactors compensate for the capacity of the long transmission lines, avoiding voltage increases at the end of the same line and are shunt connected to the line.
The smoothing reactors are connected in series to the DC line, where there is a current ripple that must be reduced. Smoothing reactors are typically single phase.
These are reactors connected in series to capacitors, allowing the resonance frequency to be moved to values that are not dangerous to these capacitors.