What is PEN Fault Protection?
PEN, or Protective Earth and Neutral, is a crucial element in electrical systems, combining the functions of both a neutral conductor (N) and a protective earth (PE) conductor. This is commonly found in TN-C-S earthing systems, an electrical power distribution system.
Fault Protection: Fault protection is a safety mechanism to prevent electric shock and other electrical hazards. In the context of EV charging, this pertains explicitly to protecting against faults in the PEN conductor.
Why Does PEN Fault Protection Matter in EVCharging?
1. Ensures electrical safety
If there's a fault in the PEN conductor, it can lead to dangerous situations, like electric shock or fire
hazards.
2. Provides a consistent and secure power supply
EN faults can disrupt theelectrical flow, impacting the reliability of EV charging
3. Complies with Regulations
Many regions have stringent regulations for electrical installations, including EV charging stations.
Implementing PEN fault protection is often a legal requirement to comply with these standards.
How Does Bomern pen fault protection Work?
Bomern PEN fault protection ensures the safety of EV charging by monitoring and responding to electrical faults. It generally involves the following key components and steps:
Fault Detection:The system constantly monitors the integrity of the PEN conductor through devices that measure voltage, current, and impedance.
Automatic Disconnection: The system automatically disconnects the power supply if a fault is detected, such as a conductor break or an unexpected current flow. This is essential for devices like wall box chargers and DC EV charging stations, preventing the risk of electric shock or other hazards.
Alerts:Triggers alarms or notifications when faults cause power disconnections, informing users or operators promptly.
Restoration Power: After afault has been resolved, the system can either be manually or automatically
reset to resume regular operation.
PEN faultprotection safeguards against electrical hazards in EV charging, which is crucial for home EV charging, wall box chargers, and DC EV Charging stations.