SURGE PROTECTION FOR EV CHARGING STATIONS

EV-SPD, the specific Mersen concept for protection of EVSE installations.

EV SUPPLY EQUIPMENT

Continuity of service (COS) of EV supply equipment is a key aspect for successful deployment of EVs. By their very nature, EV installations are both sensitive (limited impulse withstand capacity) and exposed to overvoltages. Mersen’s specific EVSE protection concept mitigates the risk of property damage and provides COS. Peace of mind.

Surge-Trap® is Mersen’s range of lightning and surge protection devices. It includes reliable high-end and certified solutions for main EVSE supply panel as well as EV charger for AC side of the converter and network communications.

GRID. MAIN EVSE SUPPLY PANEL

Several EV-chargers are supplied with power from a dedicated LV main panel.

Two coordinated steps of surge protection ensure the best performance of the lightning protection system. Therefore a SurgeTrap® T1+2 lightning current arrester is used in the panel as the first step.

Mersen’s POP device protects all downstream EV-chargers from temporary overvoltages.

EV CHARGER (AC SIDE OF THE CONVERTER)

EV-chargers contain expensive and sensitive electronics. They are installed outdoors, exposed to lightning induced overvoltages (“C-High locations”).

SurgeTrap® T2+3 EV is a specific EV SPD to increase the impulse withstand capacity of EVSE electronics from typical 4-6kV values up to 20kV. This ensures extreme durability. Tested > 200x10kA.

The ground connection of the EV-charger is monitored by Mersen’s GMD to ensure effective operation of SPDs and other (protection) devices.

EV CHARGER (NETWORK COMMUNICATIONS)

Networked communications in the EV-chargers allow for data communication, especially between the EVSE and the operator/utility (billing, AMI, smart charging).

Signal line surge protectors are typically required for RS485 and Ethernet communications.