LEM's new CDSR, which is based on LEM's magnetic induction technology, offers the highest level of performance in its segment and is a Type B RCM.
The CDSR family, which complies with international tripping standards (IEC 62752/62955/UL 2231), is suitable for AC load systems from 3.3 to 22 kW and is supplied in single-phase and three-phase versions.
As EVs become more popular, users need a reliable and safe way to charge their vehicles using their home's AC power supply. Because EVs use a high-voltage battery, they are also a high-power energy source. This must be carefully monitored to prevent any electric shock to users or damage to the home's electrical panel protection, such as the RCD that protects it from electrical hazards.
Meeting these requirements demands a very accurate method of monitoring AC and DC current leakage capable of measuring leakages from 5 mA; some are 10,000 times smaller than the current flowing through the conductor.
The LEM CDSR family achieves this thanks to LEM's fixed-phase current magnetic induction technology. This technology uses mechanical placement to optimize performance, making it the most accurate contactless technology currently available.
Its unique vertical shape also ensures easy integration and layout of the power supply track. The CDSR's external test winding, which offers isolation in a compact solution, is also easily accessible for customer testing.
The high levels of reliability and safety offered by LEM's CDSR family allow manufacturers and users of AC wall chargers and charging cables to fully benefit from leakage current sensors. These benefits include reduced electromagnetic interference that can affect nearby electronic equipment, thus improving the overall electromagnetic compatibility of the charger.
The CDSR can also be helpful in preventative maintenance, alerting you to potential problems before they become serious and reducing long-term repair costs. The device can detect even the smallest leaks at the first signs of deviation from normal performance.
By ensuring that current leakage problems are detected and resolved quickly, the CDSR family improves the reliability of AC EV chargers and reduces unplanned downtime.
It also offers greater peace of mind to EV owners, as the presence of current leakage sensors in an EV charger demonstrates the manufacturer's commitment to safety and quality. LEM backs this up with the high reliability of the CDSR, which comes with a five-year warranty.
