An Arc Suppression Coil (ASC), also known as a Petersen coil, is a specialized inductive reactor used in medium-voltage electrical networks to ground the system’s neutral point. Its primary purpose is to compensate for capacitive charging currents that occur during single-phase earth faults.

By neutralizing these fault currents, the ASC successfully extinguishes transient electrical arcs at the fault point, preventing network tripping and ensuring uninterrupted power supply.
Because network configurations and lines shift dynamically, the grid's capacitance changes constantly. To maintain optimal compensation, the coil requires a tap changer mechanism, which allows the inductance to be adjusted either via manual off-circuit steps or through automated on-load switching to perfectly match the grid's state. 

Makitel stands out as a premium European manufacturer that integrates this critical technology into its high-quality product portfolio. Manufactured at their modern facility near Ohrid, Makitel’s Arc Suppression Coils are engineered using high-permeability steel cores and advanced insulation to absorb intense electrodynamic and thermal stress.

By combining robust mechanical design with highly reliable, precise tap changers, Makitel delivers world-class grid safety solutions that minimize equipment wear, reduce outages, and optimize substation reliability globally.