Coupling filter FP

Main functions

• tuning, designed to compensate for the reactive component of the coupling capacitor(s) impedance
• galvanic isolation between high voltage overhead lines and input circuits of communication equipment;
• impedance matching between the power line and the carrier frequency connection;
• earthing the coupling capacitor bottom plate.

The difference between our coupling filter and the devices of other manufacturers is that it employs new protective devices in its input circuits. Protective devices such as transmission line arrester OPN (instead of the valve dischargers). on the line side and the varistor cable (instead of the gas discharger) on the HF side.

For application in a phase to phase circuit, design of the FP coupling device allows for 180 degree input (output) signal phase shift. You can do it by shifting connection of the terminals on the secondary winding of the transformer.