Charging Stations

Electrical Safety for Electric Vehicle Charging

Charging Stations (EVSE)

Bender offers a variety of electrical safety relay solutions for EV charging stations. Our components are designed to be integrated with the electric vehicle safety equipment's (EVSE) electronic controls. Here, they ensure that electrical isolation hazards or dangerous milliamp currents cannot harm personnel or the EVSE itself. They are designed to sense and then alert at predetermined thresholds. As follows, power will always be interrupted before the situation becomes worse. The following paragraphs describe the individual solutions we carry for level 1, level 2, and DC fast charging stations. Since there are various charging solutions available, different safety circuits may apply, and we have compiled the information below to address each scenario.

Charging Cable (IC-CPD)

Level 1 AC charging allows the user to charge their vehicle with a standard outlet at home, but also requires a special charging cable. This charging cable must have an integrated monitoring system capable of triggering a 6 mA ground fault. These are known as charge current interrupting devices or CCID5. Bender offers ground-fault monitoring sensors for level 1 charging cable manufacturers (level 1 GFCI). These CCID sensors can be used in EVSE cords in accordance with UL 2231, which has several Bender-listed devices.

AC Charging

Level 2 EVSE (electric vehicle supply equipment) can be found at homes, in hotels, or at the workplace. The required infrastructure for these charge ports is relatively simple and usually requires only a 120V or 240V connection. Bender's RCMB level 2 ground fault sensing devices monitor circuits effectively for fault currents that can pose hazards to personnel and equipment. These leakage devices are listed to UL2231 and fulfill all the stringent safety requirements. They will trigger at either 5 or 20mA of potential hazard current and interrupt the EVSE.

DC Fast Charging

DC charging allows vehicles to be charged quickly at significantly higher powers. A DC charging station, also called a fast charging station, is usually set up as an ungrounded power supply system, which must be monitored by an insulation monitoring device as specified by the standards. In DC charging, a distinction is made between two common charging standards. In addition to the CCS standard (Combined Charging System) used in US and Europe, the Japanese charging standard CHAdeMO is also used for some vehicles from Asian manufacturers.

The new insulation monitoring device ISOMETER® isoCHA425HV with AGH420 supports both charging standards equally. With this combination unit, Bender has now responded to the demands of the market. It allows switching online between CCS and CHAdeMO via a galvanically isolated Modbus RTU interface. The individual parameters for the respective standard are pre-programmed and can be selected automatically. The device is designed for nominal voltages of up to 1,000V and thus already takes into account the increasing battery and charging voltages.

Downloads

CategoryNameSizeLanguageTimestampD-/B-Number
Market Segment Brochures Electrical Safety for EV/EVSE 11.7 MB EN2020/01/20 15:22:1520.01.2020 15:22:15
Technical Information 2020 Guidelines (US) 5.6 MB EN2020/01/28 14:33:1428.01.2020 14:33:14
Product Overviews Overview Brochure 4.2 MB EN2022/08/25 20:30:5725.08.2022 20:30:57
Technical Article Charging Electric Vehicles - Protection Against Electric Shock by DC Fault Current Sensor Units 931.2 KB EN2019/05/13 10:29:2213.05.2019 10:29:22
Market Segment Brochures Bender Industry Application 19.1 MB EN2022/08/19 13:05:0819.08.2022 13:05:08
Technical Information Connection of Charging Stations for Electric Vehicles 5.5 KB EN2019/05/13 10:29:3713.05.2019 10:29:37
Technical Information Safe CHAdeMO-Compliant Charging at DC Charging Stations 5.2 KB EN2019/05/13 10:29:5613.05.2019 10:29:56

Products

Ground-Fault Monitoring, Ungrounded

ISOMETER® IR155-3203 / IR155-3204
ISOMETER® IR155 03/04 Series

Ground-fault monitoring device for ungrounded DC drive systems in electric vehicles

ISOMETER® isoEV425 mit AGH420
ISOMETER® isoEV425 with AGH420

Ground-fault monitoring device for ungrounded DC circuits for charging electric vehicles

ISOMETER® isoCHA425

Insulation monitoring device for unearthed DC systems for the charging of electric vehicles acc. to Japanese charging standard CHAdeMO

ISOMETER® isoCHA425HV mit AGH420-1
ISOMETER® isoCHA425HV with AGH420-1

Insulation monitoring device with coupling device for unearthed DC systems (IT systems) DC 0 V to 1000 V Suitable for DC charging stations according to CCS or CHAdeMO

Ground-Fault Monitoring for Grounded Systems

RCMB104
RCMB104

AC/DC sensitive residual current monitoring module for electric vehicle charging systems

RCMB121
benvac® RCMB121

AC/DC sensitive residual current monitoring for AC charge stations

Ground-Fault Monitoring, Ungrounded

ISOMETER® IR155-3203 / IR155-3204
ISOMETER® IR155 03/04 Series

Ground-fault monitoring device for ungrounded DC drive systems in electric vehicles

Details
ISOMETER® isoEV425 mit AGH420
ISOMETER® isoEV425 with AGH420

Ground-fault monitoring device for ungrounded DC circuits for charging electric vehicles

Details
ISOMETER® isoCHA425

Insulation monitoring device for unearthed DC systems for the charging of electric vehicles acc. to Japanese charging standard CHAdeMO

Details
ISOMETER® isoCHA425HV mit AGH420-1
ISOMETER® isoCHA425HV with AGH420-1

Insulation monitoring device with coupling device for unearthed DC systems (IT systems) DC 0 V to 1000 V Suitable for DC charging stations according to CCS or CHAdeMO

Details

Ground-Fault Monitoring for Grounded Systems

RCMB104
RCMB104

AC/DC sensitive residual current monitoring module for electric vehicle charging systems

Details
RCMB121
benvac® RCMB121

AC/DC sensitive residual current monitoring for AC charge stations

Details

Standards

IEC 62752

In-Cable Control and Protection Device for mode 2 charging of electric road vehicles (IC-CPD)

IEC 61851-1

Electric vehicle conductive charging system - Part 1: General requirements

IEC 61851-23

Electric vehicle conductive charging system - Part 23: DC electric vehicle charging station

DIN EN 62752

Ladeleitungsintegrierte Steuer- und Schutzeinrichtung für die Ladebetriebsart 2 von Elektro-Straßenfahrzeugen (IC-CPD)

SAE J1772
UL 2231-1
UL 2231-2