Arc Suppression Reactor for Ground Fault Compensation
Arc suppression reactors are specialized reactors used in electrical power distribution systems. By introducing a specific inductive reactance, these coils compensate for the capacitive earth fault current.





Technical Specifications
Overview
Arc Suppression Reactor Functionality
The Arc Suppression Reactor, also known as a Peterson coil or extinction coil, is a critical inductor component designed for electrical power distribution systems. It is installed between the neutral point of a transformer or generator and the ground to form an arc suppression grounding system. During single-phase grounding faults or lightning strikes, the reactor compensates for capacitive fault currents, effectively extinguishing the arc and preventing sustained faults or overvoltage damage.
Technical Principles
- Operating Principle
- Inductive compensation of capacitive earth fault current via iron-core reactor connection at the neutral point.
- Fault Response
- Automatic compensation of fault current to near-zero levels, preventing arc maintenance and system overvoltage.
Product Varieties
Available Configurations
- Air-gap type
- Turn-adjusting/regulating type
- Capacitive type
- Triac/Thyristor-controlled type
- Magnetic bias type
- On-load current regulating type
Physical Construction
- Mounting Style
- Floor mounting
- Design Features
- Iron CoreRobust Winding InsulationThree-Phase DesignHigh-Voltage Rated



