Surge Protection for Electric Bus Charging Stations

EV Charging Electric Bus eBus


Today’s increased reliance on very sensitive electronics makes surge protection an important topic for Electric Vehicle (EV) Charging Systems used for eMobility applications such as Electric Bus or eBus. The Insurance Institute for Business & Home Safety study found that $26 billion dollars was lost due to non-lightning power surges. In addition, there are about 25 million lightning strikes in the US each year that cause between $650M to $1B in losses according to the Insurance Information Institute, State Farm©. This article discusses the various types of EV Charging Systems and Electric Vehicle Supply Equipment (EVSE) to help you develop a comprehensive surge mitigation strategy. Each section will provide a recommendation on exactly which EV surge protector to use for your equipment and where to install these Surge Protective Devices for EV Chargers.

EV Chargin Electric Bus Pantograph

eBus Charging Stations

The fastest charging method (30 minutes for 124 miles) but also the most costly. These are connected to the power utility grid with an AC to DC power conversion module. The output DC voltage range is from 120Vdc to 1000Vdc with higher voltages expected in the future. In addition to the AC source, these systems can be fed or supplemented with by a photovoltaic power plant or energy storage system.

EV SPD Protection Point - DC Power Cabinet and Pantograph Charging Dispenser

LocationEquipmentProtection PointSurge Protector Model #Link
Power-Cabinet-DCFC Power Cabinet277Vac Power Input DS73US-277Y/NN DS73US-277YNN

Up to 1500VDC Power Output DS50PVS-1500/51 DS50PVS150051

120-240Vac Power Input DS72US-240T/NN DS72US-240TNN

Ethernet Cat 6A MJ8-C6A MJ8-C6A
EV Charging Pantograph Arm Pantograph
Charging Dispenser
Up to 1500VDC Power Input DS50PVS-1500/51 DS50PVS150051

Ethernet Cat 6A MJ8-POE-C6A MJ8-C6A

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10108 USA Today Way
Miramar, FL 33025 USA
Contact us to develop a surge mitigation solution for your application

Where to purchase Citel SPD's

Standard and Electric Code References for Surge Protective Devices

1ANSI C62.41, Low-Voltage AC Power Circuits
2UL1449 4th Edition, Surge Protective Devices
3UL1449 5th Edition, Surge Protective Devices
4UL497B, Surge Protectors for Data Lines and Fire-Alarm Circuits
5UL497E, Antenna Lead-in Conductors
6IEC 61643-11, Low-Voltage Surge Protective Devices - Part 11: Surge Protective Devices Connected To Low-Voltage Power Systems - Requirements And Test Methods
7IEC 61643-21, Low Voltage Surge Protective Devices - Part 21: Surge Protective Devices Connected To Telecommunications And Signaling Networks - Performance Requirements And Testing Methods
8IEC 61000-45, Electromagnetic Compatibility (EMC) - Part 4-5: Testing And Measurement Techniques - Surge Immunity Test
9CSA 22.2
10NOM-001-SCFI, Standard for Electronic Equipment
11NOM-003-SCFI, Electrical Products - Safety Requirements