Surge Protection for UL2202 EV Charging Stations

OVERVIEW

To ensure that an electric vehicle charging system is certified to the UL 2202 standard with surge protection, the following steps can be taken:

1. Choose equipment that meets the UL 2202 standard for electric vehicle supply equipment (EVSE).
   This includes the charging station, cabling, connectors, and any other components that make up the charging system.
2. Make sure that the equipment is properly installed by a licensed electrician or qualified technician, following the manufacturer's instructions and any applicable codes and regulations.
3. Ensure that the charging system has surge protection installed in accordance with the requirements of NFPA 70 or CSA C22.1, as applicable to where the system is intended to be installed.
   This protection should be able to handle the potential surges that can occur during lightning strikes or other electrical disturbances.
4. Regularly inspect and maintain the charging system to ensure that it continues to meet safety standards and operates as intended.

Overall, certification to the UL 2202 standard requires that the charging system meets specific safety and performance requirements, including surge protection.
By following the steps above and working with qualified professionals, you can help ensure that your electric vehicle charging system is safe and reliable.

Go to Level 1 | Go to Level 2 | Go to Level 3

Level 1 EV Charging Station

Power Source : 120Vac Household Outlet

These Level 1 EV Chargers are for residential home applications utilizing a standard 120Vac outlet for the power source. With up to 20 hours to charge time for a 124 mile trip, these chargers are the most basic and least expensive.

EV SPD Protection Point : Main Distribution Panel

Per the NEC 2020, since your home is a dwelling unit as defined by Article 230.67, a UL1449 Listed SPD must be Installed at the incoming 120/240Vac main service panel. Shown below is an example using the M50-120T-A.

The M50-120T-A is installed via a 2-Pole 30A circuit breaker and will not only protect the EV charging system but all circuits on the main service panel. This protector is what is referred to as a "Whole House Surge Protector".

Links to Level 1 EV SPD

Location	Equipment	System	Surge Protector Model #	Link
	Main Service Panel	120/240Vac	M50-120T-A
	Main Service Panel	120/208Vac	M50-120Y-A

Level 2 EV Charging Station

Power Source : 240Vac Appliance Outlet or Commercial Source

Generally these are public applications with a power source of 240Vac and up. However, they can also be installed in the standard 240V outlet of a home. Charge time is 5-6 hours (124 mile charge) and can be quite costly depending on the number of charge points or power available (kW).

Level 2 AC are configured a couple of different ways depending on the desired number of charge points for the site. Some will be a single integrated (<175kW) power cabinet and charge point while others will be a large power cabinet (>175kW) with multiple, distributed charge points.

EV SPD Protection Point : AC Power Cabinet and Charging Dispenser

Links to Level 2 EV SPD

Location	Equipment	Protection Point	Surge Protector Model #	Link
	Power Cabinet	277Vac Power Input	DS73US-277Y/NN
		120-277Vac Power Output	DS72US-240T/NN
		Ethernet Cat 6A	MJ8-C6A
	Charging Dispenser	120-277Vac Power Input	DS72US-240T/NN
		Ethernet Cat 6A	MJ8-C6A

Level 3 EV Charging Station

Power Source : DC Fast Charging (DCFC)

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 920Vdc 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 Charging Dispenser

Links to Level 3 EV SPD

Location	Equipment	Protection Point	Surge Protector Model #	Link
	Power Cabinet	277Vac Power Input	DS73US-277Y/NN
		Up to 1500VDC Power Output	DS50PVS-1500/51
		120-240Vac Power Input	DS72US-240T/NN
		Ethernet Cat 6A	MJ8-C6A
	Charging Dispenser	Up to 1500VDC Power Input	DS50PVS-1500/51
		Ethernet Cat 6A	MJ8-POE-C6A